Store items in a public object (#343)

* Added Object SharedItems to store all the articles in one class and allow sharing the data among activities

* Introduced functions to set articles as read globally

* Start migration of items into SharedItems

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

@@ -39,6 +39,7 @@ import apps.amine.bou.readerforselfoss.settings.SettingsActivity
 import apps.amine.bou.readerforselfoss.themes.AppColors
 import apps.amine.bou.readerforselfoss.themes.Toppings
 import apps.amine.bou.readerforselfoss.utils.Config
+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
@@ -384,7 +385,9 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         handleOfflineActions()
 
         if (markOnScroll) {
-            getElementsAccordingToTab()
+            items = SharedItems.focusedItems
+            allItems = SharedItems.items
+            handleListResult()
         }
     }
 
@@ -1096,6 +1099,8 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                             if (!allItems.contains(it)) allItems.add(it)
                         }
                     }
+                    SharedItems.focusedItems = items
+                    SharedItems.items = allItems
                 }
             } else {
                 if (!appendResults) {
@@ -1234,7 +1239,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             binding.recyclerView.adapter = recyclerAdapter
         } else {
             if (!appendResults) {
-                (recyclerAdapter as ItemsAdapter<*>).updateAllItems(items)
+                (recyclerAdapter as ItemsAdapter<*>).updateAllItems()
             } else {
                 (recyclerAdapter as ItemsAdapter<*>).addItemsAtEnd(items)
             }

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

@@ -32,6 +32,7 @@ import apps.amine.bou.readerforselfoss.themes.AppColors
 import apps.amine.bou.readerforselfoss.themes.Toppings
 import apps.amine.bou.readerforselfoss.transformers.DepthPageTransformer
 import apps.amine.bou.readerforselfoss.utils.Config
+import apps.amine.bou.readerforselfoss.utils.SharedItems
 import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
 import apps.amine.bou.readerforselfoss.utils.persistence.toEntity
 import apps.amine.bou.readerforselfoss.utils.succeeded
@@ -146,42 +147,16 @@ class ReaderActivity : AppCompatActivity() {
                     } else {
                         canFavorite()
                     }
-                    readItem(allItems[binding.pager.currentItem])
+                    readItem(allItems[position])
                 }
             }
         )
     }
 
-    fun readItem(item: Item) {
+    private fun readItem(item: Item) {
         if (markOnScroll) {
-            thread {
-                db.itemsDao().delete(item.toEntity())
+                SharedItems.readItem(applicationContext, api, db, item)
             }
-            if (this@ReaderActivity.isNetworkAccessible(this@ReaderActivity.findViewById(R.id.reader_activity_view))) {
-                api.markItem(item.id).enqueue(
-                    object : Callback<SuccessResponse> {
-                        override fun onResponse(
-                            call: Call<SuccessResponse>,
-                            response: Response<SuccessResponse>
-                        ) {
-                        }
-
-                        override fun onFailure(
-                            call: Call<SuccessResponse>,
-                            t: Throwable
-                        ) {
-                            thread {
-                                db.itemsDao().insertAllItems(item.toEntity())
-                            }
-                        }
-                    }
-                )
-            } else {
-                thread {
-                    db.actionsDao().insertAllActions(ActionEntity(item.id, true, false, false, false))
-                }
-            }
-        }
     }
 
     private fun notifyAdapter() {

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

@@ -14,6 +14,7 @@ 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 apps.amine.bou.readerforselfoss.utils.persistence.toEntity
 import apps.amine.bou.readerforselfoss.utils.succeeded
@@ -32,8 +33,8 @@ abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapte
     abstract val config: Config
     abstract val updateItems: (ArrayList<Item>) -> Unit
 
-    fun updateAllItems(newItems: ArrayList<Item>) {
-        items = newItems
+    fun updateAllItems() {
+        items = SharedItems.focusedItems
         notifyDataSetChanged()
         updateItems(items)
     }

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

@@ -74,6 +74,7 @@ fun Context.openItemUrlInternally(
 ) {
     if (articleViewer) {
         ReaderActivity.allItems = allItems
+        SharedItems.position = currentItem
         val intent = Intent(this, ReaderActivity::class.java)
         intent.putExtra("currentItem", currentItem)
         app.startActivity(intent)

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

@@ -0,0 +1,102 @@
+package apps.amine.bou.readerforselfoss.utils
+
+import android.content.Context
+import android.widget.Toast
+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.utils.persistence.toEntity
+import apps.amine.bou.readerforselfoss.utils.network.isNetworkAccessible
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+import kotlin.concurrent.thread
+
+/*
+* Singleton class that contains the articles fetched from Selfoss, it allows sharing the items list
+* between Activities and Fragments
+*/
+object SharedItems {
+    var items: ArrayList<Item> = arrayListOf<Item>()
+        get() {
+            return ArrayList(field)
+        }
+        set(value) {
+            field = ArrayList(value)
+        }
+    var focusedItems: ArrayList<Item> = arrayListOf<Item>()
+        get() {
+            return ArrayList(field)
+        }
+        set(value) {
+            field = ArrayList(value)
+        }
+    var position = 0
+        set(value) {
+            field = when {
+                value < 0 -> 0
+                value > focusedItems.size -> focusedItems.size
+                else -> value
+            }
+        }
+
+    fun readItem(app: Context, api: SelfossApi, db: AppDatabase, item: Item) {
+        if (focusedItems.contains(item)) {
+            position = focusedItems.indexOf(item)
+            readItemAtIndex(app, api, db)
+        }
+    }
+
+    fun readItemAtIndex(app: Context, api: SelfossApi, db: AppDatabase) {
+        val i = focusedItems[position]
+        var tmpItems = items
+        tmpItems.remove(i)
+        items = tmpItems
+        var tmpFocusedItems = focusedItems
+        tmpFocusedItems.remove(i)
+        focusedItems = tmpFocusedItems
+
+        thread {
+            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()
+                    tmpItems.add(position, i)
+                    tmpFocusedItems.add(position, i)
+                    items = tmpItems
+                    focusedItems = tmpFocusedItems
+
+                    thread {
+                        db.itemsDao().insertAllItems(i.toEntity())
+                    }
+                }
+            })
+        } else {
+            thread {
+                db.actionsDao().insertAllActions(ActionEntity(i.id, true, false, false, false))
+            }
+        }
+
+        if (position > focusedItems.size) {
+            position -= 1
+        }
+    }
+}