Migration of Item management to SharedItems (#345)

* Refactor Item addition and deletion

* Metods to filter the items according to read and starred status

* Remove displayed items only if displaying unread items

* Remove unnecessary api calls on tab change and delegate item storage to SharedItems

* Store articles in SharedItems when they get fetched

* Add tag filtering

* Mark items as read

* Disable sorting function

* Add function to get the unread status of an element.

* Fetch items on pull gesture

* Move marking as read logic in SharedItems.

* Delegate item status to SharedItems

* Allow changing unread status of items

* Use full article position reference and not the relative one

* Delegate marking items as unread to SharedItems

* Delegate database addition of Items to SharedItems.

* Function to only provide connectivity information

* Better database management

* Sort items by date

* Provide information about item caching to SharedItems

* Add missing imports

* Update database after fetching articles

* Add missing variable

* Remove unused import

* Use coroutines to access database

* Use coroutines to simultaneously fetch articles.

* Update database after fetching articles.

* Don't block thread when accessing the database

* Prevent crash if connectivity is lost while fetching articles

* Show "Not connected" snackbar if there is no connection or connection is lost during download

* Use coroutines in the background sync

* Added function to get only new items

* Introduced function to filter articles

* Don't execute background sync if the option is disabled

* Improve item filtering

* Apply filters when they are selected on the UI

* Handle infinite scroll

* Incorrect parameters were passed

* Simplify tab selection logic

* Upgrade kotlin jvm to version 1.8

* On tab change fetch new items if the item list is not completely populated

* Remove redundant assignations.

* Fetch articles when changing tag, source or search if the list is not fully populated

* Fetch only the article in the tab selected

* Correct inconsistent position address

* Disable swiping articles only if favorites are selected

* Delegate badge count to SharedItems

* Clear the database when the app starts in order to avoid accumulation and inconsistencies

* Remove unused functions and variables

* Do not overwrite fetched items with old copies from the database

* Display "There's nothing here" only if there are no articles

* Adapt function to read all articles to the new changes

* Use IO Dispatcher for Database and Network computations

* Adapt Background sync to the usage of SharedItems

* Handle refresh gesture appropriately by refreshing the whole items list

* Remove unused imports

app/build.gradle

@@ -82,6 +82,9 @@ android {
             dimension "build"
         }
     }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
 }
 
 dependencies {
@@ -113,10 +116,13 @@ dependencies {
         transitive = true
     }
 
+    // Async
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9'
+
     // Retrofit + http logging + okhttp
-    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
     implementation 'com.squareup.okhttp3:logging-interceptor:3.9.0'
-    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
     implementation 'com.burgstaller:okhttp-digest:1.12'
 
     // Material-ish things
@@ -148,6 +154,7 @@ dependencies {
     implementation "androidx.lifecycle:lifecycle-common-java8:2.3.0-rc01"
 
     implementation "androidx.room:room-runtime:2.3.0-alpha04"
+    implementation "androidx.room:room-ktx:2.3.0-alpha04"
     kapt "androidx.room:room-compiler:2.3.0-alpha04"
 
     implementation "android.arch.work:work-runtime-ktx:$work_version"

app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt

@@ -18,6 +18,7 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.SearchView
 import androidx.core.view.MenuItemCompat
+import androidx.core.view.doOnNextLayout
 import androidx.recyclerview.widget.*
 import androidx.room.Room
 import androidx.work.Constraints
@@ -43,7 +44,6 @@ import apps.amine.bou.readerforselfoss.utils.SharedItems
 import apps.amine.bou.readerforselfoss.utils.bottombar.maybeShow
 import apps.amine.bou.readerforselfoss.utils.bottombar.removeBadge
 import apps.amine.bou.readerforselfoss.utils.customtabs.CustomTabActivityHelper
-import apps.amine.bou.readerforselfoss.utils.flattenTags
 import apps.amine.bou.readerforselfoss.utils.longHash
 import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
 import apps.amine.bou.readerforselfoss.utils.persistence.toEntity
@@ -58,7 +58,6 @@ import com.ashokvarma.bottomnavigation.BottomNavigationItem
 import com.ashokvarma.bottomnavigation.TextBadgeItem
 import com.bumptech.glide.Glide
 import com.ftinc.scoop.Scoop
-import com.mikepenz.aboutlibraries.Libs
 import com.mikepenz.aboutlibraries.LibsBuilder
 import com.mikepenz.materialdrawer.Drawer
 import com.mikepenz.materialdrawer.holder.BadgeStyle
@@ -66,10 +65,12 @@ import com.mikepenz.materialdrawer.holder.StringHolder
 import com.mikepenz.materialdrawer.model.DividerDrawerItem
 import com.mikepenz.materialdrawer.model.PrimaryDrawerItem
 import com.mikepenz.materialdrawer.model.SecondaryDrawerItem
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import retrofit2.Call
 import retrofit2.Callback
 import retrofit2.Response
-import java.text.SimpleDateFormat
 import java.util.concurrent.TimeUnit
 import kotlin.concurrent.thread
 
@@ -129,10 +130,6 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
     private var recyclerAdapter: RecyclerView.Adapter<*>? = null
 
-    private var badgeNew: Int = -1
-    private var badgeAll: Int = -1
-    private var badgeFavs: Int = -1
-
     private var fromTabShortcut: Boolean = false
     private var offlineShortcut: Boolean = false
 
@@ -213,7 +210,11 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             allItems = ArrayList()
             lastFetchDone = false
             handleDrawerItems()
+            CoroutineScope(Dispatchers.Main).launch {
+                refreshFocusedItems(applicationContext, api, db)
                 getElementsAccordingToTab()
+                binding.swipeRefreshLayout.isRefreshing = false
+            }
         }
 
         val simpleItemTouchCallback =
@@ -225,7 +226,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                     recyclerView: RecyclerView,
                     viewHolder: RecyclerView.ViewHolder
                 ): Int =
-                    if (elementsShown != UNREAD_SHOWN && elementsShown != READ_SHOWN) {
+                    if (elementsShown == FAV_SHOWN) {
                         0
                     } else {
                         super.getSwipeDirs(
@@ -247,16 +248,8 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                     if (i != null) {
                         val adapter = binding.recyclerView.adapter as ItemsAdapter<*>
 
-                        val wasItemUnread = adapter.unreadItemStatusAtIndex(position)
-
                         adapter.handleItemAtIndex(position)
 
-                        if (wasItemUnread) {
-                            badgeNew--
-                        } else {
-                            badgeNew++
-                        }
-
                         reloadBadgeContent()
 
                         val tagHashes = i.tags.tags.split(",").map { it.longHash() }
@@ -392,55 +385,13 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
     }
 
     private fun getAndStoreAllItems() {
-        api.allNewItems().enqueue(object : Callback<List<Item>> {
+         CoroutineScope(Dispatchers.Main).launch {
-            override fun onFailure(call: Call<List<Item>>, t: Throwable) {
+             binding.swipeRefreshLayout.isRefreshing = true
-            }
+             getAndStoreAllItems(applicationContext ,api, db)
-
+             this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout), offlineShortcut)
-            override fun onResponse(
+             handleListResult()
-                call: Call<List<Item>>,
+             binding.swipeRefreshLayout.isRefreshing = false
-                response: Response<List<Item>>
+             SharedItems.updateDatabase(db)
-            ) {
-                enqueueArticles(response, true)
-            }
-        })
-
-        api.allReadItems().enqueue(object : Callback<List<Item>> {
-            override fun onFailure(call: Call<List<Item>>, t: Throwable) {
-            }
-
-            override fun onResponse(
-                    call: Call<List<Item>>,
-                    response: Response<List<Item>>
-            ) {
-                enqueueArticles(response, false)
-            }
-        })
-
-        api.allStarredItems().enqueue(object : Callback<List<Item>> {
-            override fun onFailure(call: Call<List<Item>>, t: Throwable) {
-            }
-
-            override fun onResponse(
-                    call: Call<List<Item>>,
-                    response: Response<List<Item>>
-            ) {
-                enqueueArticles(response, false)
-            }
-        })
-    }
-
-    private fun enqueueArticles(response: Response<List<Item>>, clearDatabase: Boolean) {
-        thread {
-            if (response.body() != null) {
-                val apiItems = (response.body() as ArrayList<Item>).filter {
-                    maybeTagFilter != null || filter(it.tags.tags)
-                } as ArrayList<Item>
-                if (clearDatabase) {
-                    db.itemsDao().deleteAllItems()
-                }
-                db.itemsDao()
-                        .insertAllItems(*(apiItems.map { it.toEntity() }).toTypedArray())
-            }
          }
     }
 
@@ -461,6 +412,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         displayAccountHeader = sharedPref.getBoolean("account_header_displaying", false)
         infiniteScroll = sharedPref.getBoolean("infinite_loading", false)
         itemsCaching = sharedPref.getBoolean("items_caching", false)
+        SharedItems.itemsCaching = itemsCaching
         updateSources = sharedPref.getBoolean("update_sources", true)
         markOnScroll = sharedPref.getBoolean("mark_on_scroll", false)
         hiddenTags = if (sharedPref.getString("hidden_tags", "")!!.isNotEmpty()) {
@@ -597,7 +549,9 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                                 .withOnDrawerItemClickListener { _, _, _ ->
                                     allItems = ArrayList()
                                     maybeTagFilter = it
+                                    SharedItems.tagFilter = it.tag
                                     getElementsAccordingToTab()
+                                    fetchOnEmptyList()
                                     false
                                 }
                         if (it.unread > 0) {
@@ -648,7 +602,9 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                                 .withOnDrawerItemClickListener { _, _, _ ->
                                     allItems = ArrayList()
                                     maybeTagFilter = it
+                                    SharedItems.tagFilter = it.tag
                                     getElementsAccordingToTab()
+                                    fetchOnEmptyList()
                                     false
                                 }
                         if (it.unread > 0) {
@@ -680,7 +636,10 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                                 .withOnDrawerItemClickListener { _, _, _ ->
                                     allItems = ArrayList()
                                     maybeSourceFilter = tag
+                                    SharedItems.sourceIDFilter = tag.id.toLong()
+                                    SharedItems.sourceFilter = tag.title
                                     getElementsAccordingToTab()
+                                    fetchOnEmptyList()
                                     false
                                 }
                         if (tag.getIcon(this@HomeActivity).isNotBlank()) {
@@ -710,8 +669,12 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                         .withOnDrawerItemClickListener { _, _, _ ->
                             allItems = ArrayList()
                             maybeSourceFilter = null
+                            SharedItems.sourceFilter = null
+                            SharedItems.sourceIDFilter = null
                             maybeTagFilter = null
+                            SharedItems.tagFilter = null
                             getElementsAccordingToTab()
+                            fetchOnEmptyList()
                             false
                         }
                 )
@@ -900,7 +863,6 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                                 StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS
                         binding.recyclerView.layoutManager = layoutManager
                     }
-                } else {
                 }
         }
     }
@@ -933,69 +895,28 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                 offset = 0
                 lastFetchDone = false
 
-                if (itemsCaching) {
+                elementsShown = position + 1
+                getElementsAccordingToTab()
+                binding.recyclerView.scrollToPosition(0)
 
-                    if (!binding.swipeRefreshLayout.isRefreshing) {
+                fetchOnEmptyList()
-                        binding.swipeRefreshLayout.post { binding.swipeRefreshLayout.isRefreshing = true }
-                    }
-
-                    thread {
-                        val dbItems = db.itemsDao().items().map { it.toView() }.sortedByDescending {
-                            SimpleDateFormat(Config.dateTimeFormatter).parse(it.datetime)
-                        }
-                        runOnUiThread {
-                            if (dbItems.isNotEmpty()) {
-                                items = when (position) {
-                                    0 -> ArrayList(dbItems.filter { it.unread })
-                                    1 -> ArrayList(dbItems.filter { !it.unread })
-                                    2 -> ArrayList(dbItems.filter { it.starred })
-                                    else -> ArrayList(dbItems.filter { it.unread })
-                                }
-                                handleListResult()
-                                when (position) {
-                                    0 -> getUnRead()
-                                    1 -> getRead()
-                                    2 -> getStarred()
-                                    else -> Unit
-                                }
-                            } else {
-                                if (this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout), offlineShortcut)) {
-                                    when (position) {
-                                        0 -> getUnRead()
-                                        1 -> getRead()
-                                        2 -> getStarred()
-                                        else -> Unit
-                                    }
-                                    getAndStoreAllItems()
-                                }
-                            }
-                        }
-                    }
-
-                } else {
-                    when (position) {
-                        0 -> getUnRead()
-                        1 -> getRead()
-                        2 -> getStarred()
-                        else -> Unit
-                    }
-                }
             }
         })
     }
 
+    private fun fetchOnEmptyList() {
+        binding.recyclerView.doOnNextLayout {
+            if (SharedItems.focusedItems.size - 1 == getLastVisibleItem()) {
+                getElementsAccordingToTab(true)
+            }
+        }
+    }
+
     private fun handleInfiniteScroll() {
         recyclerViewScrollListener = object : RecyclerView.OnScrollListener() {
             override fun onScrolled(localRecycler: RecyclerView, dx: Int, dy: Int) {
                 if (dy > 0) {
-                    val manager = binding.recyclerView.layoutManager
+                    val lastVisibleItem = getLastVisibleItem()
-                    val lastVisibleItem: Int = when (manager) {
-                        is StaggeredGridLayoutManager -> manager.findLastCompletelyVisibleItemPositions(
-                            null
-                        ).last()
-                        is GridLayoutManager -> manager.findLastCompletelyVisibleItemPosition()
-                        else -> 0
-                    }
 
                     if (lastVisibleItem == (items.size - 1) && items.size < maxItemNumber()) {
                         getElementsAccordingToTab(appendResults = true)
@@ -1008,13 +929,22 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         binding.recyclerView.addOnScrollListener(recyclerViewScrollListener)
     }
 
+    private fun getLastVisibleItem() : Int {
+        val manager = binding.recyclerView.layoutManager
+        return when (manager) {
+            is StaggeredGridLayoutManager -> manager.findLastCompletelyVisibleItemPositions(
+                null
+            ).last()
+            is GridLayoutManager -> manager.findLastCompletelyVisibleItemPosition()
+            else -> 0
+        }
+    }
+
     private fun mayBeEmpty() =
         if (items.isEmpty()) {
             binding.emptyText.visibility = View.VISIBLE
-            binding.recyclerView.visibility = View.GONE
         } else {
             binding.emptyText.visibility = View.GONE
-            binding.recyclerView.visibility = View.VISIBLE
         }
 
     private fun getElementsAccordingToTab(
@@ -1030,155 +960,52 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             }
         }
 
-        offset = if (appendResults && offsetOverride === null) {
+        offset = if (appendResults) {
-            (offset + itemsNumber)
+            SharedItems.focusedItems.size - 1
         } else {
-            offsetOverride ?: 0
+            0
         }
         firstVisible = if (appendResults) firstVisible else 0
 
-        if (itemsCaching) {
-
-            if (!binding.swipeRefreshLayout.isRefreshing) {
-                binding.swipeRefreshLayout.post { binding.swipeRefreshLayout.isRefreshing = true }
-            }
-
-            thread {
-                val dbItems = db.itemsDao().items().map { it.toView() }.sortedByDescending {
-                    SimpleDateFormat(Config.dateTimeFormatter).parse(it.datetime)
-                }
-                runOnUiThread {
-                    if (dbItems.isNotEmpty()) {
-                        items = when (elementsShown) {
-                            UNREAD_SHOWN -> ArrayList(dbItems.filter { it.unread })
-                            READ_SHOWN -> ArrayList(dbItems.filter { !it.unread })
-                            FAV_SHOWN -> ArrayList(dbItems.filter { it.starred })
-                            else -> ArrayList(dbItems.filter { it.unread })
-                        }
-                        handleListResult()
         doGetAccordingToTab()
-                    } else {
-                        if (this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout), offlineShortcut)) {
-                            doGetAccordingToTab()
-                            getAndStoreAllItems()
-                        }
-                    }
-                }
-            }
-
-        } else {
-            doGetAccordingToTab()
-        }
-
-    }
-
-    private fun filter(tags: String): Boolean {
-        val tagsList = tags.replace("\\s".toRegex(), "").split(",")
-        return tagsList.intersect(hiddenTags).isEmpty()
-    }
-
-    private fun doCallTo(
-        appendResults: Boolean,
-        toastMessage: Int,
-        call: (String?, Long?, String?) -> Call<List<Item>>
-    ) {
-        fun handleItemsResponse(response: Response<List<Item>>) {
-            val shouldUpdate = (response.body()?.toSet() != items.toSet())
-            if (response.body() != null) {
-                if (shouldUpdate) {
-                    getAndStoreAllItems()
-                    items = response.body() as ArrayList<Item>
-                    items = items.filter {
-                        maybeTagFilter != null || filter(it.tags.tags)
-                    } as ArrayList<Item>
-
-                    if (allItems.isEmpty()) {
-                        allItems = items
-                    } else {
-                        items.forEach {
-                            if (!allItems.contains(it)) allItems.add(it)
-                        }
-                    }
-                    SharedItems.focusedItems = items
-                    SharedItems.items = allItems
-                }
-            } else {
-                if (!appendResults) {
-                    items = ArrayList()
-                    allItems = ArrayList()
-                }
-            }
-
-            handleListResult(appendResults)
-
-            if (!appendResults) mayBeEmpty()
-            binding.swipeRefreshLayout.isRefreshing = false
-        }
-
-        if (!binding.swipeRefreshLayout.isRefreshing) {
-            binding.swipeRefreshLayout.post { binding.swipeRefreshLayout.isRefreshing = true }
-        }
-
-        if (this@HomeActivity.isNetworkAccessible(this@HomeActivity.findViewById(R.id.coordLayout), offlineShortcut)) {
-            call(maybeTagFilter?.tag, maybeSourceFilter?.id?.toLong(), maybeSearchFilter)
-                .enqueue(object : Callback<List<Item>> {
-                    override fun onResponse(
-                        call: Call<List<Item>>,
-                        response: Response<List<Item>>
-                    ) {
-                        handleItemsResponse(response)
-                    }
-
-                    override fun onFailure(call: Call<List<Item>>, t: Throwable) {
-                        binding.swipeRefreshLayout.isRefreshing = false
-                        Toast.makeText(
-                            this@HomeActivity,
-                            toastMessage,
-                            Toast.LENGTH_SHORT
-                        ).show()
-                    }
-                })
-        } else {
-            binding.swipeRefreshLayout.post { binding.swipeRefreshLayout.isRefreshing = false }
-        }
     }
 
     private fun getUnRead(appendResults: Boolean = false) {
-        elementsShown = UNREAD_SHOWN
+        CoroutineScope(Dispatchers.Main).launch {
-        doCallTo(appendResults, R.string.cant_get_new_elements) { t, id, f ->
+            if (appendResults || !SharedItems.fetchedUnread) {
-            api.newItems(
+                binding.swipeRefreshLayout.isRefreshing = true
-                t,
+                getUnreadItems(applicationContext, api, db, offset)
-                id,
+                binding.swipeRefreshLayout.isRefreshing = false
-                f,
+            }
-                itemsNumber,
+            SharedItems.getUnRead()
-                offset
+            items = SharedItems.focusedItems
-            )
+            handleListResult()
         }
     }
 
     private fun getRead(appendResults: Boolean = false) {
-        elementsShown = READ_SHOWN
+        CoroutineScope(Dispatchers.Main).launch {
-        doCallTo(appendResults, R.string.cant_get_read) { t, id, f ->
+            if (appendResults || !SharedItems.fetchedAll) {
-            api.readItems(
+                binding.swipeRefreshLayout.isRefreshing = true
-                t,
+                getReadItems(applicationContext, api, db, offset)
-                id,
+                binding.swipeRefreshLayout.isRefreshing = false
-                f,
+            }
-                itemsNumber,
+            SharedItems.getAll()
-                offset
+            items = SharedItems.focusedItems
-            )
+            handleListResult()
         }
     }
 
     private fun getStarred(appendResults: Boolean = false) {
-        elementsShown = FAV_SHOWN
+        CoroutineScope(Dispatchers.Main).launch {
-        doCallTo(appendResults, R.string.cant_get_favs) { t, id, f ->
+            if (appendResults || !SharedItems.fetchedStarred) {
-            api.starredItems(
+                binding.swipeRefreshLayout.isRefreshing = true
-                t,
+                getStarredItems(applicationContext, api, db, offset)
-                id,
+                binding.swipeRefreshLayout.isRefreshing = false
-                f,
+            }
-                itemsNumber,
+            SharedItems.getStarred()
-                offset
+            items = SharedItems.focusedItems
-            )
+            handleListResult()
         }
     }
 
@@ -1238,59 +1065,35 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             }
             binding.recyclerView.adapter = recyclerAdapter
         } else {
-            if (!appendResults) {
                 (recyclerAdapter as ItemsAdapter<*>).updateAllItems()
-            } else {
-                (recyclerAdapter as ItemsAdapter<*>).addItemsAtEnd(items)
-            }
         }
 
         reloadBadges()
+        mayBeEmpty()
     }
 
     private fun reloadBadges() {
-        if (this@HomeActivity.isNetworkAccessible(null, offlineShortcut) && (displayUnreadCount || displayAllCount)) {
+        if (displayUnreadCount || displayAllCount) {
-            api.stats.enqueue(object : Callback<Stats> {
+            CoroutineScope(Dispatchers.Main).launch {
-                override fun onResponse(call: Call<Stats>, response: Response<Stats>) {
+                reloadBadges(applicationContext, api)
-                    if (response.body() != null) {
-
-                        badgeNew = response.body()!!.unread
-                        badgeAll = response.body()!!.total
-                        badgeFavs = response.body()!!.starred
                 reloadBadgeContent()
             }
         }
-
-                override fun onFailure(call: Call<Stats>, t: Throwable) {
-                }
-            })
-        } else {
-            reloadBadgeContent(succeeded = false)
-        }
     }
 
-    private fun reloadBadgeContent(succeeded: Boolean = true) {
+    private fun reloadBadgeContent() {
-        if (succeeded) {
         if (displayUnreadCount) {
             tabNewBadge
-                    .setText(badgeNew.toString())
+                .setText(SharedItems.badgeUnread.toString())
                 .maybeShow()
         }
         if (displayAllCount) {
             tabArchiveBadge
-                    .setText(badgeAll.toString())
+                .setText(SharedItems.badgeAll.toString())
                 .maybeShow()
             tabStarredBadge
-                    .setText(badgeFavs.toString())
+                .setText(SharedItems.badgeStarred.toString())
                 .maybeShow()
-            } else {
-                tabArchiveBadge.removeBadge()
-                tabStarredBadge.removeBadge()
-            }
-        } else {
-            tabNewBadge.removeBadge()
-            tabArchiveBadge.removeBadge()
-            tabStarredBadge.removeBadge()
         }
     }
 
@@ -1310,14 +1113,18 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
     override fun onQueryTextChange(p0: String?): Boolean {
         if (p0.isNullOrBlank()) {
             maybeSearchFilter = null
+            SharedItems.searchFilter = null
             getElementsAccordingToTab()
+            fetchOnEmptyList()
         }
         return false
     }
 
     override fun onQueryTextSubmit(p0: String?): Boolean {
         maybeSearchFilter = p0
+        SharedItems.searchFilter = p0
         getElementsAccordingToTab()
+        fetchOnEmptyList()
         return false
     }
 
@@ -1387,21 +1194,12 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             R.id.readAll -> {
                 if (elementsShown == UNREAD_SHOWN) {
                     needsConfirmation(R.string.readAll, R.string.markall_dialog_message) {
-                        binding.swipeRefreshLayout.isRefreshing = false
+                        binding.swipeRefreshLayout.isRefreshing = true
-                        val ids = allItems.map { it.id }
-                        val itemsByTag: Map<Long, Int> =
-                            allItems.flattenTags()
-                                .groupBy { it.tags.tags.longHash() }
-                                .map { it.key to it.value.size }
-                                .toMap()
 
-                        if (ids.isNotEmpty() && this@HomeActivity.isNetworkAccessible(null, offlineShortcut)) {
+                        if (this@HomeActivity.isNetworkAccessible(null, offlineShortcut)) {
-                            api.readAll(ids).enqueue(object : Callback<SuccessResponse> {
+                            CoroutineScope(Dispatchers.Main).launch {
-                                override fun onResponse(
+                                val success = readAll(applicationContext, api, db)
-                                    call: Call<SuccessResponse>,
+                                if (success) {
-                                    response: Response<SuccessResponse>
-                                ) {
-                                    if (response.body() != null && response.body()!!.isSuccess) {
                                     Toast.makeText(
                                         this@HomeActivity,
                                         R.string.all_posts_read,
@@ -1418,33 +1216,11 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                                         R.string.all_posts_not_read,
                                         Toast.LENGTH_SHORT
                                     ).show()
-
-
-                                    }
-
-                                    binding.swipeRefreshLayout.isRefreshing = false
-                                }
-
-                                override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                                    Toast.makeText(
-                                        this@HomeActivity,
-                                        R.string.all_posts_not_read,
-                                        Toast.LENGTH_SHORT
-                                    ).show()
-                                    binding.swipeRefreshLayout.isRefreshing = false
-                                }
-                            })
-                            items = ArrayList()
-                            allItems = ArrayList()
-                        }
-                        if (items.isEmpty()) {
-                            Toast.makeText(
-                                this@HomeActivity,
-                                R.string.nothing_here,
-                                Toast.LENGTH_SHORT
-                            ).show()
                                 }
                                 handleListResult()
+                                binding.swipeRefreshLayout.isRefreshing = false
+                            }
+                        }
                     }
                 }
                 return true
@@ -1458,10 +1234,10 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
     private fun maxItemNumber(): Int =
         when (elementsShown) {
-            UNREAD_SHOWN -> badgeNew
+            UNREAD_SHOWN -> SharedItems.badgeUnread
-            READ_SHOWN -> badgeAll
+            READ_SHOWN -> SharedItems.badgeAll
-            FAV_SHOWN -> badgeFavs
+            FAV_SHOWN -> SharedItems.badgeStarred
-            else -> badgeNew // if !elementsShown then unread are fetched.
+            else -> SharedItems.badgeUnread // if !elementsShown then unread are fetched.
         }
 
     private fun updateItems(adapterItems: ArrayList<Item>) {
@@ -1505,7 +1281,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         }
 
         if (this@HomeActivity.isNetworkAccessible(null, offlineShortcut)) {
-            thread {
+            CoroutineScope(Dispatchers.Main).launch {
                 val actions = db.actionsDao().actions()
 
                 actions.forEach { action ->

app/src/main/java/apps/amine/bou/readerforselfoss/adapters/ItemCardAdapter.kt

@@ -2,7 +2,6 @@ package apps.amine.bou.readerforselfoss.adapters
 
 import android.app.Activity
 import android.content.Context
-import androidx.cardview.widget.CardView
 import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View

app/src/main/java/apps/amine/bou/readerforselfoss/adapters/ItemListAdapter.kt

@@ -2,22 +2,12 @@ package apps.amine.bou.readerforselfoss.adapters
 
 import android.app.Activity
 import android.content.Context
-import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.recyclerview.widget.RecyclerView
-import android.text.Spannable
-import android.text.style.ClickableSpan
-import android.util.TypedValue
 import android.view.LayoutInflater
-import android.view.MotionEvent
-import android.view.View
 import android.view.ViewGroup
-import android.widget.TextView
-import android.widget.Toast
 import androidx.core.content.ContextCompat
-import apps.amine.bou.readerforselfoss.R
 import apps.amine.bou.readerforselfoss.api.selfoss.Item
 import apps.amine.bou.readerforselfoss.api.selfoss.SelfossApi
-import apps.amine.bou.readerforselfoss.api.selfoss.SuccessResponse
 import apps.amine.bou.readerforselfoss.databinding.ListItemBinding
 import apps.amine.bou.readerforselfoss.persistence.database.AppDatabase
 import apps.amine.bou.readerforselfoss.themes.AppColors
@@ -27,19 +17,11 @@ import apps.amine.bou.readerforselfoss.utils.buildCustomTabsIntent
 import apps.amine.bou.readerforselfoss.utils.customtabs.CustomTabActivityHelper
 import apps.amine.bou.readerforselfoss.utils.glide.bitmapCenterCrop
 import apps.amine.bou.readerforselfoss.utils.glide.circularBitmapDrawable
-import apps.amine.bou.readerforselfoss.utils.openInBrowserAsNewTask
 import apps.amine.bou.readerforselfoss.utils.openItemUrl
-import apps.amine.bou.readerforselfoss.utils.shareLink
 import apps.amine.bou.readerforselfoss.utils.sourceAndDateText
 import apps.amine.bou.readerforselfoss.utils.toTextDrawableString
 import com.amulyakhare.textdrawable.TextDrawable
 import com.amulyakhare.textdrawable.util.ColorGenerator
-import com.like.LikeButton
-import com.like.OnLikeListener
-import retrofit2.Call
-import retrofit2.Callback
-import retrofit2.Response
-import java.util.*
 import kotlin.collections.ArrayList
 
 class ItemListAdapter(

app/src/main/java/apps/amine/bou/readerforselfoss/adapters/ItemsAdapter.kt

@@ -2,26 +2,16 @@ package apps.amine.bou.readerforselfoss.adapters
 
 import android.app.Activity
 import android.graphics.Color
-import com.google.android.material.snackbar.Snackbar
-import androidx.recyclerview.widget.RecyclerView
 import android.widget.TextView
-import android.widget.Toast
+import androidx.recyclerview.widget.RecyclerView
 import apps.amine.bou.readerforselfoss.R
 import apps.amine.bou.readerforselfoss.api.selfoss.Item
 import apps.amine.bou.readerforselfoss.api.selfoss.SelfossApi
-import apps.amine.bou.readerforselfoss.api.selfoss.SuccessResponse
 import apps.amine.bou.readerforselfoss.persistence.database.AppDatabase
-import apps.amine.bou.readerforselfoss.persistence.entities.ActionEntity
 import apps.amine.bou.readerforselfoss.themes.AppColors
 import apps.amine.bou.readerforselfoss.utils.Config
 import apps.amine.bou.readerforselfoss.utils.SharedItems
-import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
+import com.google.android.material.snackbar.Snackbar
-import apps.amine.bou.readerforselfoss.utils.persistence.toEntity
-import apps.amine.bou.readerforselfoss.utils.succeeded
-import retrofit2.Call
-import retrofit2.Callback
-import retrofit2.Response
-import kotlin.concurrent.thread
 
 abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapter<VH>() {
     abstract var items: ArrayList<Item>
@@ -47,34 +37,11 @@ abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapte
                 Snackbar.LENGTH_LONG
             )
             .setAction(R.string.undo_string) {
-                items.add(position, i)
+                SharedItems.unreadItem(app, api, db, i)
-                thread {
+                if (SharedItems.displayedItems == "unread") {
-                    db.itemsDao().insertAllItems(i.toEntity())
+                    addItemAtIndex(i, position)
-                }
-                notifyItemInserted(position)
-                updateItems(items)
-
-                if (app.isNetworkAccessible(null)) {
-                    api.unmarkItem(i.id).enqueue(object : Callback<SuccessResponse> {
-                        override fun onResponse(
-                            call: Call<SuccessResponse>,
-                            response: Response<SuccessResponse>
-                        ) {
-                        }
-
-                        override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                            items.remove(i)
-                            thread {
-                                db.itemsDao().delete(i.toEntity())
-                            }
-                            notifyItemRemoved(position)
-                            updateItems(items)
-                        }
-                    })
                 } else {
-                    thread {
+                    notifyItemChanged(position)
-                        db.actionsDao().insertAllActions(ActionEntity(i.id, false, true, false, false))
-                    }
                 }
             }
 
@@ -84,7 +51,7 @@ abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapte
         s.show()
     }
 
-    private fun markSnackbar(i: Item, position: Int) {
+    private fun markSnackbar(position: Int) {
         val s = Snackbar
             .make(
                 app.findViewById(R.id.coordLayout),
@@ -92,34 +59,13 @@ abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapte
                 Snackbar.LENGTH_LONG
             )
             .setAction(R.string.undo_string) {
-                items.add(position, i)
+                SharedItems.readItem(app, api, db, items[position])
-                thread {
+                items = SharedItems.focusedItems
-                    db.itemsDao().delete(i.toEntity())
+                if (SharedItems.displayedItems == "unread") {
-                }
-                notifyItemInserted(position)
-                updateItems(items)
-
-                if (app.isNetworkAccessible(null)) {
-                    api.markItem(i.id).enqueue(object : Callback<SuccessResponse> {
-                        override fun onResponse(
-                            call: Call<SuccessResponse>,
-                            response: Response<SuccessResponse>
-                        ) {
-                        }
-
-                        override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                            items.remove(i)
-                            thread {
-                                db.itemsDao().insertAllItems(i.toEntity())
-                            }
                     notifyItemRemoved(position)
                     updateItems(items)
-                        }
-                    })
                 } else {
-                    thread {
+                    notifyItemChanged(position)
-                        db.actionsDao().insertAllActions(ActionEntity(i.id, true, false, false, false))
-                    }
                 }
             }
 
@@ -130,99 +76,30 @@ abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapte
     }
 
     fun handleItemAtIndex(position: Int) {
-        if (unreadItemStatusAtIndex(position)) {
+        if (SharedItems.unreadItemStatusAtIndex(position)) {
             readItemAtIndex(position)
         } else {
             unreadItemAtIndex(position)
         }
     }
 
-    fun unreadItemStatusAtIndex(position: Int): Boolean {
-        return items[position].unread
-    }
-
     private fun readItemAtIndex(position: Int) {
         val i = items[position]
+        SharedItems.readItem(app, api, db, i)
+        if (SharedItems.displayedItems == "unread") {
             items.remove(i)
             notifyItemRemoved(position)
             updateItems(items)
-
+        } else {
-        thread {
+            notifyItemChanged(position)
-            db.itemsDao().delete(i.toEntity())
         }
-
-        if (app.isNetworkAccessible(null)) {
-            api.markItem(i.id).enqueue(object : Callback<SuccessResponse> {
-                override fun onResponse(
-                    call: Call<SuccessResponse>,
-                    response: Response<SuccessResponse>
-                ) {
-
         unmarkSnackbar(i, position)
     }
 
-                override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                    Toast.makeText(
-                        app,
-                        app.getString(R.string.cant_mark_read),
-                        Toast.LENGTH_SHORT
-                    ).show()
-                    items.add(position, i)
-                    notifyItemInserted(position)
-                    updateItems(items)
-
-                    thread {
-                        db.itemsDao().insertAllItems(i.toEntity())
-                    }
-                }
-            })
-        } else {
-            thread {
-                db.actionsDao().insertAllActions(ActionEntity(i.id, true, false, false, false))
-            }
-        }
-    }
-
     private fun unreadItemAtIndex(position: Int) {
-        val i = items[position]
+        SharedItems.unreadItem(app, api, db, items[position])
-        items.remove(i)
+        notifyItemChanged(position)
-        notifyItemRemoved(position)
+        markSnackbar(position)
-        updateItems(items)
-
-        thread {
-            db.itemsDao().insertAllItems(i.toEntity())
-        }
-
-        if (app.isNetworkAccessible(null)) {
-            api.unmarkItem(i.id).enqueue(object : Callback<SuccessResponse> {
-                override fun onResponse(
-                    call: Call<SuccessResponse>,
-                    response: Response<SuccessResponse>
-                ) {
-
-                    markSnackbar(i, position)
-                }
-
-                override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                    Toast.makeText(
-                        app,
-                        app.getString(R.string.cant_mark_unread),
-                        Toast.LENGTH_SHORT
-                    ).show()
-                    items.add(i)
-                    notifyItemInserted(position)
-                    updateItems(items)
-
-                    thread {
-                        db.itemsDao().delete(i.toEntity())
-                    }
-                }
-            })
-        } else {
-            thread {
-                db.actionsDao().insertAllActions(ActionEntity(i.id, false, true, false, false))
-            }
-        }
     }
 
     fun addItemAtIndex(item: Item, position: Int) {

app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossApi.kt

@@ -3,6 +3,7 @@ package apps.amine.bou.readerforselfoss.api.selfoss
 import android.app.Activity
 import android.content.Context
 import apps.amine.bou.readerforselfoss.utils.Config
+import apps.amine.bou.readerforselfoss.utils.SharedItems
 import apps.amine.bou.readerforselfoss.utils.getUnsafeHttpClient
 import com.burgstaller.okhttp.AuthenticationCacheInterceptor
 import com.burgstaller.okhttp.CachingAuthenticatorDecorator
@@ -142,54 +143,50 @@ class SelfossApi(
     fun login(): Call<SuccessResponse> =
         service.loginToSelfoss(config.userLogin, config.userPassword)
 
-    fun readItems(
+    suspend fun readItems(
-        tag: String?,
-        sourceId: Long?,
-        search: String?,
         itemsNumber: Int,
         offset: Int
-    ): Call<List<Item>> =
+    ): retrofit2.Response<List<Item>> =
-        getItems("read", tag, sourceId, search, itemsNumber, offset)
+        getItems("read", SharedItems.tagFilter, SharedItems.sourceIDFilter, SharedItems.searchFilter, itemsNumber, offset)
 
-    fun newItems(
+    suspend fun newItems(
-        tag: String?,
-        sourceId: Long?,
-        search: String?,
         itemsNumber: Int,
         offset: Int
-    ): Call<List<Item>> =
+    ): retrofit2.Response<List<Item>> =
-        getItems("unread", tag, sourceId, search, itemsNumber, offset)
+        getItems("unread", SharedItems.tagFilter, SharedItems.sourceIDFilter, SharedItems.searchFilter, itemsNumber, offset)
 
-    fun starredItems(
+    suspend fun starredItems(
-        tag: String?,
-        sourceId: Long?,
-        search: String?,
         itemsNumber: Int,
         offset: Int
-    ): Call<List<Item>> =
+    ): retrofit2.Response<List<Item>> =
-        getItems("starred", tag, sourceId, search, itemsNumber, offset)
+        getItems("starred", SharedItems.tagFilter, SharedItems.sourceIDFilter, SharedItems.searchFilter, itemsNumber, offset)
 
     fun allItems(): Call<List<Item>> =
         service.allItems(userName, password)
 
-    fun allNewItems(): Call<List<Item>> =
+    suspend fun allNewItems(): retrofit2.Response<List<Item>> =
             getItems("unread", null, null, null, 200, 0)
 
-    fun allReadItems(): Call<List<Item>> =
+    suspend fun allReadItems(): retrofit2.Response<List<Item>> =
             getItems("read", null, null, null, 200, 0)
 
-    fun allStarredItems(): Call<List<Item>> =
+    suspend fun allStarredItems(): retrofit2.Response<List<Item>> =
         getItems("read", null, null, null, 200, 0)
 
-    private fun getItems(
+    private suspend fun getItems(
         type: String,
         tag: String?,
         sourceId: Long?,
         search: String?,
         items: Int,
         offset: Int
-    ): Call<List<Item>> =
+    ): retrofit2.Response<List<Item>> =
-        service.getItems(type, tag, sourceId, search, userName, password, items, offset)
+        service.getItems(type, tag, sourceId, search, null, userName, password, items, offset)
+
+    suspend fun updateItems(
+        updatedSince: String
+    ): retrofit2.Response<List<Item>> =
+        service.getItems("read", null, null, null, updatedSince, userName, password, 200, 0)
 
     fun markItem(itemId: String): Call<SuccessResponse> =
         service.markAsRead(itemId, userName, password)
@@ -197,7 +194,7 @@ class SelfossApi(
     fun unmarkItem(itemId: String): Call<SuccessResponse> =
         service.unmarkAsRead(itemId, userName, password)
 
-    fun readAll(ids: List<String>): Call<SuccessResponse> =
+    suspend fun readAll(ids: List<String>): SuccessResponse =
         service.markAllAsRead(ids, userName, password)
 
     fun starrItem(itemId: String): Call<SuccessResponse> =
@@ -206,8 +203,7 @@ class SelfossApi(
     fun unstarrItem(itemId: String): Call<SuccessResponse> =
         service.unstarr(itemId, userName, password)
 
-    val stats: Call<Stats>
+    suspend fun stats(): retrofit2.Response<Stats> = service.stats(userName, password)
-        get() = service.stats(userName, password)
 
     val tags: Call<List<Tag>>
         get() = service.tags(userName, password)

app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossFetching.kt

@@ -0,0 +1,134 @@
+package apps.amine.bou.readerforselfoss.api.selfoss
+
+import android.content.Context
+import apps.amine.bou.readerforselfoss.persistence.database.AppDatabase
+import apps.amine.bou.readerforselfoss.utils.SharedItems
+import apps.amine.bou.readerforselfoss.utils.network.isNetworkAvailable
+import kotlinx.coroutines.*
+import retrofit2.Response
+
+suspend fun getAndStoreAllItems(context: Context, api: SelfossApi, db: AppDatabase) = withContext(Dispatchers.IO) {
+    if (isNetworkAvailable(context)) {
+        launch {
+            try {
+                enqueueArticles(api.allNewItems(), db, true)
+            } catch (e: Throwable) {}
+        }
+        launch {
+            try {
+                enqueueArticles(api.allReadItems(), db, false)
+            } catch (e: Throwable) {}
+        }
+        launch {
+            try {
+                enqueueArticles(api.allStarredItems(), db, false)
+            } catch (e: Throwable) {}
+        }
+    } else {
+        launch { SharedItems.updateDatabase(db) }
+    }
+}
+
+suspend fun updateItems(context: Context, api: SelfossApi, db: AppDatabase) = coroutineScope {
+    if (isNetworkAvailable(context)) {
+        launch {
+            try {
+                enqueueArticles(api.updateItems(SharedItems.items[0].datetime), db, true)
+            } catch (e: Throwable) {}
+        }
+    }
+}
+
+suspend fun refreshFocusedItems(context: Context, api: SelfossApi, db: AppDatabase) = withContext(Dispatchers.IO) {
+    if (isNetworkAvailable(context)) {
+        val response = when (SharedItems.displayedItems) {
+            "read" -> api.readItems(200, 0)
+            "unread" -> api.newItems(200, 0)
+            "starred" -> api.starredItems(200, 0)
+            else -> api.readItems(200, 0)
+        }
+
+        if (response.isSuccessful) {
+            SharedItems.refreshFocusedItems(response.body() as ArrayList<Item>)
+            SharedItems.updateDatabase(db)
+        }
+    }
+}
+
+suspend fun getReadItems(context: Context, api: SelfossApi, db: AppDatabase, offset: Int) = withContext(Dispatchers.IO) {
+    if (isNetworkAvailable(context)) {
+            try {
+                enqueueArticles(api.readItems( 200, offset), db, false)
+                SharedItems.fetchedAll = true
+                SharedItems.updateDatabase(db)
+            } catch (e: Throwable) {}
+    }
+}
+
+suspend fun getUnreadItems(context: Context, api: SelfossApi, db: AppDatabase, offset: Int) = withContext(Dispatchers.IO) {
+    if (isNetworkAvailable(context)) {
+        try {
+            if (!SharedItems.fetchedUnread) {
+                SharedItems.clearDBItems(db)
+            }
+            enqueueArticles(api.newItems(200, offset), db, false)
+            SharedItems.fetchedUnread = true
+        } catch (e: Throwable) {}
+    }
+    SharedItems.updateDatabase(db)
+}
+
+suspend fun getStarredItems(context: Context, api: SelfossApi, db: AppDatabase, offset: Int) = withContext(Dispatchers.IO) {
+    if (isNetworkAvailable(context)) {
+        try {
+            enqueueArticles(api.starredItems(200, offset), db, false)
+            SharedItems.fetchedStarred = true
+            SharedItems.updateDatabase(db)
+        } catch (e: Throwable) {
+        }
+    }
+}
+
+suspend fun readAll(context: Context, api: SelfossApi, db: AppDatabase): Boolean {
+    var success = false
+    if (isNetworkAvailable(context)) {
+        try {
+            val ids = SharedItems.focusedItems.map { it.id }
+            if (ids.isNotEmpty()) {
+                val result = api.readAll(ids)
+                SharedItems.readItems(db, ids)
+                success = result.isSuccess
+            }
+        } catch (e: Throwable) {}
+    }
+    return success
+}
+
+suspend fun reloadBadges(context: Context, api: SelfossApi) = withContext(Dispatchers.IO) {
+    if (isNetworkAvailable(context)) {
+        try {
+            val response = api.stats()
+
+            if (response.isSuccessful) {
+                val badges = response.body()
+                SharedItems.badgeUnread = badges!!.unread
+                SharedItems.badgeAll = badges.total
+                SharedItems.badgeStarred = badges.starred
+            }
+        } catch (e: Throwable) {}
+    } else {
+        SharedItems.computeBadges()
+    }
+}
+
+private fun enqueueArticles(response: Response<List<Item>>, db: AppDatabase, clearDatabase: Boolean) {
+        if (response.isSuccessful) {
+            if (clearDatabase) {
+                CoroutineScope(Dispatchers.IO).launch {
+                    SharedItems.clearDBItems(db)
+                }
+            }
+            val allItems = response.body() as ArrayList<Item>
+            SharedItems.appendNewItems(allItems)
+        }
+}

app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossModels.kt

@@ -88,7 +88,7 @@ data class Item(
     @SerializedName("datetime") val datetime: String,
     @SerializedName("title") val title: String,
     @SerializedName("content") val content: String,
-    @SerializedName("unread") val unread: Boolean,
+    @SerializedName("unread") var unread: Boolean,
     @SerializedName("starred") var starred: Boolean,
     @SerializedName("thumbnail") val thumbnail: String?,
     @SerializedName("icon") val icon: String?,

app/src/main/java/apps/amine/bou/readerforselfoss/api/selfoss/SelfossService.kt

@@ -1,6 +1,7 @@
 package apps.amine.bou.readerforselfoss.api.selfoss
 
 import retrofit2.Call
+import retrofit2.Response
 import retrofit2.http.DELETE
 import retrofit2.http.Field
 import retrofit2.http.FormUrlEncoded
@@ -16,16 +17,17 @@ internal interface SelfossService {
     fun loginToSelfoss(@Query("username") username: String, @Query("password") password: String): Call<SuccessResponse>
 
     @GET("items")
-    fun getItems(
+    suspend fun getItems(
         @Query("type") type: String,
         @Query("tag") tag: String?,
         @Query("source") source: Long?,
         @Query("search") search: String?,
+        @Query("updatedsince") updatedSince: String?,
         @Query("username") username: String,
         @Query("password") password: String,
         @Query("items") items: Int,
         @Query("offset") offset: Int
-    ): Call<List<Item>>
+    ): Response<List<Item>>
 
     @GET("items")
     fun allItems(
@@ -51,11 +53,11 @@ internal interface SelfossService {
 
     @FormUrlEncoded
     @POST("mark")
-    fun markAllAsRead(
+    suspend fun markAllAsRead(
         @Field("ids[]") ids: List<String>,
         @Query("username") username: String,
         @Query("password") password: String
-    ): Call<SuccessResponse>
+    ): SuccessResponse
 
     @Headers("Content-Type: application/x-www-form-urlencoded")
     @POST("starr/{id}")
@@ -74,10 +76,10 @@ internal interface SelfossService {
     ): Call<SuccessResponse>
 
     @GET("stats")
-    fun stats(
+    suspend fun stats(
         @Query("username") username: String,
         @Query("password") password: String
-    ): Call<Stats>
+    ): Response<Stats>
 
     @GET("tags")
     fun tags(

app/src/main/java/apps/amine/bou/readerforselfoss/background/background.kt

@@ -13,16 +13,19 @@ import androidx.work.Worker
 import androidx.work.WorkerParameters
 import apps.amine.bou.readerforselfoss.MainActivity
 import apps.amine.bou.readerforselfoss.R
-import apps.amine.bou.readerforselfoss.api.selfoss.Item
 import apps.amine.bou.readerforselfoss.api.selfoss.SelfossApi
+import apps.amine.bou.readerforselfoss.api.selfoss.getAndStoreAllItems
 import apps.amine.bou.readerforselfoss.persistence.database.AppDatabase
 import apps.amine.bou.readerforselfoss.persistence.entities.ActionEntity
 import apps.amine.bou.readerforselfoss.persistence.migrations.MIGRATION_1_2
 import apps.amine.bou.readerforselfoss.persistence.migrations.MIGRATION_2_3
 import apps.amine.bou.readerforselfoss.persistence.migrations.MIGRATION_3_4
 import apps.amine.bou.readerforselfoss.utils.Config
-import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
+import apps.amine.bou.readerforselfoss.utils.SharedItems
-import apps.amine.bou.readerforselfoss.utils.persistence.toEntity
+import apps.amine.bou.readerforselfoss.utils.network.isNetworkAvailable
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import retrofit2.Call
 import retrofit2.Callback
 import retrofit2.Response
@@ -34,12 +37,26 @@ class LoadingWorker(val context: Context, params: WorkerParameters) : Worker(con
     lateinit var db: AppDatabase
 
 override fun doWork(): Result {
-        if (context.isNetworkAccessible(null)) {
+    val settings =
+        this.context.getSharedPreferences(Config.settingsName, Context.MODE_PRIVATE)
+    val sharedPref = PreferenceManager.getDefaultSharedPreferences(this.context)
+    val periodicRefresh = sharedPref.getBoolean("periodic_refresh", false)
+    if (periodicRefresh) {
+        val api = SelfossApi(
+            this.context,
+            null,
+            settings.getBoolean("isSelfSignedCert", false),
+            sharedPref.getString("api_timeout", "-1")!!.toLong()
+        )
 
+        if (isNetworkAvailable(context)) {
+
+            CoroutineScope(Dispatchers.IO).launch {
                 val notificationManager =
                     applicationContext.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
 
-            val notification = NotificationCompat.Builder(applicationContext, Config.syncChannelId)
+                val notification =
+                    NotificationCompat.Builder(applicationContext, Config.syncChannelId)
                         .setContentTitle(context.getString(R.string.loading_notification_title))
                         .setContentText(context.getString(R.string.loading_notification_text))
                         .setOngoing(true)
@@ -49,107 +66,69 @@ class LoadingWorker(val context: Context, params: WorkerParameters) : Worker(con
 
                 notificationManager.notify(1, notification.build())
 
-            val settings =
-                this.context.getSharedPreferences(Config.settingsName, Context.MODE_PRIVATE)
-            val sharedPref = PreferenceManager.getDefaultSharedPreferences(this.context)
                 val notifyNewItems = sharedPref.getBoolean("notify_new_items", false)
 
                 db = Room.databaseBuilder(
                     applicationContext,
                     AppDatabase::class.java, "selfoss-database"
-            ).addMigrations(MIGRATION_1_2).addMigrations(MIGRATION_2_3).addMigrations(MIGRATION_3_4).build()
+                ).addMigrations(MIGRATION_1_2).addMigrations(MIGRATION_2_3)
+                    .addMigrations(MIGRATION_3_4).build()
 
-            val api = SelfossApi(
-                this.context,
-                null,
-                settings.getBoolean("isSelfSignedCert", false),
-                sharedPref.getString("api_timeout", "-1")!!.toLong()
-            )
-
-            api.allNewItems().enqueue(object : Callback<List<Item>> {
-                override fun onFailure(call: Call<List<Item>>, t: Throwable) {
-                    Timer("", false).schedule(4000) {
-                        notificationManager.cancel(1)
-                    }
-                }
-
-                override fun onResponse(
-                    call: Call<List<Item>>,
-                    response: Response<List<Item>>
-                ) {
-                    storeItems(response, true, notifyNewItems, notificationManager)
-                }
-            })
-            api.allReadItems().enqueue(object : Callback<List<Item>> {
-                override fun onFailure(call: Call<List<Item>>, t: Throwable) {
-                    Timer("", false).schedule(4000) {
-                        notificationManager.cancel(1)
-                    }
-                }
-
-                override fun onResponse(
-                        call: Call<List<Item>>,
-                        response: Response<List<Item>>
-                ) {
-                    storeItems(response, false, notifyNewItems, notificationManager)
-                }
-            })
-            api.allStarredItems().enqueue(object : Callback<List<Item>> {
-                override fun onFailure(call: Call<List<Item>>, t: Throwable) {
-                    Timer("", false).schedule(4000) {
-                        notificationManager.cancel(1)
-                    }
-                }
-
-                override fun onResponse(
-                        call: Call<List<Item>>,
-                        response: Response<List<Item>>
-                ) {
-                    storeItems(response, false, notifyNewItems, notificationManager)
-                }
-            })
-
-            thread {
                 val actions = db.actionsDao().actions()
 
                 actions.forEach { action ->
                     when {
-                        action.read -> doAndReportOnFail(api.markItem(action.articleId), action)
+                        action.read -> doAndReportOnFail(
-                        action.unread -> doAndReportOnFail(api.unmarkItem(action.articleId), action)
+                            api.markItem(action.articleId),
-                        action.starred -> doAndReportOnFail(api.starrItem(action.articleId), action)
+                            action
+                        )
+                        action.unread -> doAndReportOnFail(
+                            api.unmarkItem(action.articleId),
+                            action
+                        )
+                        action.starred -> doAndReportOnFail(
+                            api.starrItem(action.articleId),
+                            action
+                        )
                         action.unstarred -> doAndReportOnFail(
                             api.unstarrItem(action.articleId),
                             action
                         )
                     }
                 }
+
+                getAndStoreAllItems(context, api, db)
+                SharedItems.updateDatabase(db)
+                storeItems(notifyNewItems, notificationManager)
+            }
         }
     }
     return Result.success()
 }
 
-    private fun storeItems(response: Response<List<Item>>, newItems: Boolean, notifyNewItems: Boolean, notificationManager: NotificationManager) {
+    private fun storeItems(notifyNewItems: Boolean, notificationManager: NotificationManager) {
-        thread {
+        CoroutineScope(Dispatchers.IO).launch {
-            if (response.body() != null) {
+                val apiItems = SharedItems.items
-                val apiItems = (response.body() as ArrayList<Item>)
 
-                if (newItems) {
-                    db.itemsDao().deleteAllItems()
-                }
-                db.itemsDao()
-                        .insertAllItems(*(apiItems.map { it.toEntity() }).toTypedArray())
 
                 val newSize = apiItems.filter { it.unread }.size
-                if (newItems && notifyNewItems && newSize > 0) {
+                if (notifyNewItems && newSize > 0) {
 
                     val intent = Intent(context, MainActivity::class.java).apply {
                         flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
                     }
-                    val pendingIntent: PendingIntent = PendingIntent.getActivity(context, 0, intent, 0)
+                    val pendingIntent: PendingIntent =
+                        PendingIntent.getActivity(context, 0, intent, 0)
 
-                    val newItemsNotification = NotificationCompat.Builder(applicationContext, Config.newItemsChannelId)
+                    val newItemsNotification =
+                        NotificationCompat.Builder(applicationContext, Config.newItemsChannelId)
                             .setContentTitle(context.getString(R.string.new_items_notification_title))
-                            .setContentText(context.getString(R.string.new_items_notification_text, newSize))
+                            .setContentText(
+                                context.getString(
+                                    R.string.new_items_notification_text,
+                                    newSize
+                                )
+                            )
                             .setPriority(PRIORITY_DEFAULT)
                             .setChannelId(Config.newItemsChannelId)
                             .setContentIntent(pendingIntent)
@@ -161,7 +140,6 @@ class LoadingWorker(val context: Context, params: WorkerParameters) : Worker(con
                     }
                 }
                 apiItems.map { it.preloadImages(context) }
-            }
             Timer("", false).schedule(4000) {
                 notificationManager.cancel(1)
             }

app/src/main/java/apps/amine/bou/readerforselfoss/persistence/dao/ActionsDao.kt

@@ -10,7 +10,7 @@ import apps.amine.bou.readerforselfoss.persistence.entities.ActionEntity
 @Dao
 interface ActionsDao {
     @Query("SELECT * FROM actions order by id asc")
-    fun actions(): List<ActionEntity>
+    suspend fun actions(): List<ActionEntity>
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insertAllActions(vararg actions: ActionEntity)

app/src/main/java/apps/amine/bou/readerforselfoss/persistence/dao/ItemsDao.kt

@@ -13,17 +13,17 @@ import androidx.room.Update
 @Dao
 interface ItemsDao {
     @Query("SELECT * FROM items order by id desc")
-    fun items(): List<ItemEntity>
+    suspend fun items(): List<ItemEntity>
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
-    fun insertAllItems(vararg items: ItemEntity)
+    suspend fun insertAllItems(vararg items: ItemEntity)
 
     @Query("DELETE FROM items")
-    fun deleteAllItems()
+    suspend fun deleteAllItems()
 
     @Delete
-    fun delete(item: ItemEntity)
+    suspend fun delete(item: ItemEntity)
 
     @Update
-    fun updateItem(item: ItemEntity)
+    suspend fun updateItem(item: ItemEntity)
 }

app/src/main/java/apps/amine/bou/readerforselfoss/utils/SharedItems.kt

@@ -10,9 +10,14 @@ import apps.amine.bou.readerforselfoss.persistence.database.AppDatabase
 import apps.amine.bou.readerforselfoss.persistence.entities.ActionEntity
 import apps.amine.bou.readerforselfoss.utils.persistence.toEntity
 import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
+import apps.amine.bou.readerforselfoss.utils.persistence.toView
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import retrofit2.Call
 import retrofit2.Callback
 import retrofit2.Response
+import java.text.SimpleDateFormat
 import kotlin.concurrent.thread
 
 /*
@@ -38,30 +43,170 @@ object SharedItems {
         set(value) {
             field = when {
                 value < 0 -> 0
-                value > focusedItems.size -> focusedItems.size
+                value > items.size -> items.size
                 else -> value
             }
         }
+    var displayedItems: String = "unread"
+        set(value) {
+            field = when (value) {
+                "all" -> "all"
+                "unread" -> "unread"
+                "read" -> "read"
+                "starred" -> "starred"
+                else -> "all"
+            }
+        }
+
+    var searchFilter: String? = null
+    var sourceIDFilter: Long? = null
+    var sourceFilter: String? = null
+    var tagFilter: String? = null
+    var itemsCaching = false
+
+    var fetchedUnread = false
+    var fetchedAll = false
+    var fetchedStarred = false
+
+    var badgeUnread = -1
+    var badgeAll = -1
+    var badgeStarred = -1
+
+    fun appendNewItems(newItems: ArrayList<Item>) {
+        val tmpItems = items
+        if (tmpItems != newItems) {
+            newItems.removeAll(tmpItems)
+            tmpItems.addAll(newItems)
+            items = tmpItems
+
+            sortItems()
+            getFocusedItems()
+        }
+    }
+
+    fun refreshFocusedItems(newItems: ArrayList<Item>) {
+        val tmpItems = items
+        tmpItems.removeAll(focusedItems)
+
+        appendNewItems(newItems)
+    }
+
+    suspend fun clearDBItems(db: AppDatabase) {
+        db.itemsDao().deleteAllItems()
+    }
+
+    suspend fun updateDatabase(db: AppDatabase) {
+        if (itemsCaching) {
+            if (items.isEmpty()) {
+                getFromDB(db)
+            }
+            db.itemsDao().deleteAllItems()
+            db.itemsDao().insertAllItems(*(items.map { it.toEntity() }).toTypedArray())
+        }
+    }
+
+    fun filter() {
+        fun filterSearch(item: Item): Boolean {
+            return if (!searchFilter.isEmptyOrNullOrNullString()) {
+                var matched = item.title.contains(searchFilter.toString(), true)
+                matched = matched || item.content.contains(searchFilter.toString(), true)
+                matched = matched || item.sourcetitle.contains(searchFilter.toString(), true)
+                matched
+            } else {
+                true
+            }
+        }
+
+        var tmpItems = focusedItems
+        if (tagFilter != null) {
+            tmpItems = tmpItems.filter { it.tags.tags.contains(tagFilter.toString()) } as ArrayList<Item>
+        }
+        if (searchFilter != null) {
+            tmpItems = tmpItems.filter { filterSearch(it) } as ArrayList<Item>
+        }
+        if (sourceFilter != null) {
+            tmpItems = tmpItems.filter { it.sourcetitle == sourceFilter } as ArrayList<Item>
+        }
+        focusedItems = tmpItems
+    }
+
+    private fun getFocusedItems() {
+        when (displayedItems) {
+            "all" -> getAll()
+            "unread" -> getUnRead()
+            "read" -> getRead()
+            "starred" -> getStarred()
+            else -> getUnRead()
+        }
+    }
+
+    fun getUnRead() {
+        displayedItems = "unread"
+        focusedItems = items.filter { item -> item.unread } as ArrayList<Item>
+        filter()
+    }
+
+    fun getRead() {
+        displayedItems = "read"
+        focusedItems = items.filter { item -> !item.unread } as ArrayList<Item>
+        filter()
+    }
+
+    fun getStarred() {
+        displayedItems = "starred"
+        focusedItems = items.filter { item -> item.starred } as ArrayList<Item>
+        filter()
+    }
+
+    fun getAll() {
+        displayedItems = "all"
+        focusedItems = items
+        filter()
+    }
+
+    suspend fun getFromDB(db: AppDatabase) {
+        if (itemsCaching) {
+                    val dbItems = db.itemsDao().items().map { it.toView() } as ArrayList<Item>
+                    appendNewItems(dbItems)
+        }
+    }
+
+    private fun removeItemAtIndex(index: Int) {
+        val i = focusedItems[index]
+        val tmpItems = focusedItems
+        tmpItems.remove(i)
+        focusedItems = tmpItems
+    }
+
+    fun addItemAtIndex(newItem: Item, index: Int) {
+        val tmpItems = focusedItems
+        tmpItems.add(index, newItem)
+        focusedItems = tmpItems
+    }
 
     fun readItem(app: Context, api: SelfossApi, db: AppDatabase, item: Item) {
-        if (focusedItems.contains(item)) {
+        if (items.contains(item)) {
-            position = focusedItems.indexOf(item)
+            position = items.indexOf(item)
-            readItemAtIndex(app, api, db)
+            readItemAtPosition(app, api, db)
         }
     }
 
-    fun readItemAtIndex(app: Context, api: SelfossApi, db: AppDatabase) {
+    fun readItems(db: AppDatabase, ids: List<String>) {
-        val i = focusedItems[position]
+        for (id in ids) {
-        var tmpItems = items
+            val match = items.filter { it -> it.id == id }
-        tmpItems.remove(i)
+            if (match.isNotEmpty() && match.size == 1) {
+                position = items.indexOf(match[0])
+                val tmpItems = items
+                tmpItems[position].unread = false
                 items = tmpItems
-        var tmpFocusedItems = focusedItems
+                resetDBItem(db)
-        tmpFocusedItems.remove(i)
+                badgeUnread--
-        focusedItems = tmpFocusedItems
-
-        thread {
-            db.itemsDao().delete(i.toEntity())
             }
+        }
+    }
+
+    private fun readItemAtPosition(app: Context, api: SelfossApi, db: AppDatabase) {
+        val i = items[position]
 
         if (app.isNetworkAccessible(null)) {
             api.markItem(i.id).enqueue(object : Callback<SuccessResponse> {
@@ -70,7 +215,13 @@ object SharedItems {
                         response: Response<SuccessResponse>
                 ) {
 
-                    //unmarkSnackbar(i, position)
+                    val tmpItems = items
+                    tmpItems[position].unread = false
+                    items = tmpItems
+
+                    resetDBItem(db)
+                    getFocusedItems()
+                    badgeUnread--
                 }
 
                 override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
@@ -79,24 +230,82 @@ object SharedItems {
                             app.getString(R.string.cant_mark_read),
                             Toast.LENGTH_SHORT
                     ).show()
-                    tmpItems.add(position, i)
-                    tmpFocusedItems.add(position, i)
-                    items = tmpItems
-                    focusedItems = tmpFocusedItems
-
-                    thread {
-                        db.itemsDao().insertAllItems(i.toEntity())
-                    }
                 }
             })
-        } else {
+        } else if (itemsCaching) {
             thread {
                 db.actionsDao().insertAllActions(ActionEntity(i.id, true, false, false, false))
             }
         }
 
-        if (position > focusedItems.size) {
+        if (position > items.size) {
             position -= 1
         }
     }
+
+    fun unreadItem(app: Context, api: SelfossApi, db: AppDatabase, item: Item) {
+        if (items.contains(item) && !item.unread) {
+            position = items.indexOf(item)
+            unreadItemAtPosition(app, api, db)
+        }
+    }
+
+    private fun unreadItemAtPosition(app: Context, api: SelfossApi, db: AppDatabase) {
+        val i = items[position]
+
+        if (app.isNetworkAccessible(null)) {
+            api.unmarkItem(i.id).enqueue(object : Callback<SuccessResponse> {
+                override fun onResponse(
+                    call: Call<SuccessResponse>,
+                    response: Response<SuccessResponse>
+                ) {
+
+                    val tmpItems = items
+                    tmpItems[position].unread = true
+                    items = tmpItems
+
+                    resetDBItem(db)
+                    getFocusedItems()
+                    badgeUnread++
+                }
+
+                override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
+                    Toast.makeText(
+                        app,
+                        app.getString(R.string.cant_mark_unread),
+                        Toast.LENGTH_SHORT
+                    ).show()
+                }
+            })
+        } else if (itemsCaching) {
+            thread {
+                db.actionsDao().insertAllActions(ActionEntity(i.id, false, true, false, false))
+            }
+        }
+    }
+
+    private fun resetDBItem(db: AppDatabase) {
+        if (itemsCaching) {
+            val i = items[position]
+            CoroutineScope(Dispatchers.IO).launch {
+                db.itemsDao().delete(i.toEntity())
+                db.itemsDao().insertAllItems(i.toEntity())
+            }
+        }
+    }
+
+    fun unreadItemStatusAtIndex(position: Int): Boolean {
+        return focusedItems[position].unread
+    }
+
+    fun computeBadges() {
+        badgeUnread = items.filter { item -> item.unread }.size
+        badgeStarred = items.filter { item -> item.starred }.size
+        badgeAll = items.size
+    }
+
+    private fun sortItems() {
+        val tmpItems = ArrayList(items.sortedByDescending { SimpleDateFormat(Config.dateTimeFormatter).parse((it.datetime)) })
+        items = tmpItems
+    }
 }

app/src/main/java/apps/amine/bou/readerforselfoss/utils/network/NetworkUtils.kt

@@ -3,7 +3,8 @@ package apps.amine.bou.readerforselfoss.utils.network
 import android.content.Context
 import android.graphics.Color
 import android.net.ConnectivityManager
-import android.net.NetworkInfo
+import android.net.NetworkCapabilities
+import android.os.Build
 import android.view.View
 import android.widget.TextView
 import apps.amine.bou.readerforselfoss.R
@@ -14,9 +15,7 @@ var view: View? = null
 lateinit var s: Snackbar
 
 fun Context.isNetworkAccessible(v: View?, overrideOffline: Boolean = false): Boolean {
-    val cm = this.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+    val networkIsAccessible = isNetworkAvailable(this)
-    val activeNetwork: NetworkInfo? = cm.activeNetworkInfo
-    val networkIsAccessible = activeNetwork != null && activeNetwork.isConnectedOrConnecting
 
     if (v != null && (!networkIsAccessible || overrideOffline) && (!snackBarShown || v != view)) {
         view = v
@@ -43,3 +42,23 @@ fun Context.isNetworkAccessible(v: View?, overrideOffline: Boolean = false): Boo
     }
     return if(overrideOffline) overrideOffline else networkIsAccessible
 }
+
+fun isNetworkAvailable(context: Context): Boolean {
+    val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+
+     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+         val network = connectivityManager.activeNetwork ?: return false
+         val networkCapabilities = connectivityManager.getNetworkCapabilities(network) ?: return false
+
+         return when {
+             networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_BLUETOOTH) -> true
+             networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
+             networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
+             networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
+             else -> false
+         }
+    } else {
+        val network = connectivityManager.activeNetworkInfo ?: return false
+         return network.isConnectedOrConnecting
+    }
+}