From 89d34a1a712bef4fb2cf81ea9aaf6199effa112b Mon Sep 17 00:00:00 2001
From: Amine <amine@alantaya.com>
Date: Sun, 14 Oct 2018 15:38:06 +0200
Subject: [PATCH] Closes #1. May need some fine tuning.

---
 .../bou/readerforselfoss/HomeActivity.kt      | 120 +++++++++++++-----
 .../settings/SettingsActivity.java            |  22 ++++
 ...ic_signal_wifi_statusbar_not_connected.png | Bin 0 -> 523 bytes
 ...ic_signal_wifi_statusbar_not_connected.png | Bin 0 -> 361 bytes
 ...ic_signal_wifi_statusbar_not_connected.png | Bin 0 -> 660 bytes
 ...ic_signal_wifi_statusbar_not_connected.png | Bin 0 -> 982 bytes
 ...ic_signal_wifi_statusbar_not_connected.png | Bin 0 -> 1250 bytes
 app/src/main/res/values/strings.xml           |   4 +
 app/src/main/res/xml/pref_headers.xml         |   6 +
 app/src/main/res/xml/pref_offline.xml         |   8 ++
 10 files changed, 130 insertions(+), 30 deletions(-)
 create mode 100644 app/src/main/res/drawable-hdpi/ic_signal_wifi_statusbar_not_connected.png
 create mode 100644 app/src/main/res/drawable-mdpi/ic_signal_wifi_statusbar_not_connected.png
 create mode 100644 app/src/main/res/drawable-xhdpi/ic_signal_wifi_statusbar_not_connected.png
 create mode 100644 app/src/main/res/drawable-xxhdpi/ic_signal_wifi_statusbar_not_connected.png
 create mode 100644 app/src/main/res/drawable-xxxhdpi/ic_signal_wifi_statusbar_not_connected.png
 create mode 100644 app/src/main/res/xml/pref_offline.xml

diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt
index 716324f..7973ce9 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt
@@ -107,6 +107,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
     private var displayAccountHeader: Boolean = false
     private var infiniteScroll: Boolean = false
     private var lastFetchDone: Boolean = false
+    private var itemsCaching: Boolean = false
     private var hiddenTags: List<String> = emptyList()
 
     private lateinit var tabNewBadge: TextBadgeItem
@@ -180,24 +181,6 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         handleSwipeRefreshLayout()
     }
 
-    private fun handleGDPRDialog(GDPRShown: Boolean) {
-        val sharedEditor = sharedPref.edit()
-        if (!GDPRShown) {
-            val alertDialog = AlertDialog.Builder(this).create()
-            alertDialog.setTitle(getString(R.string.gdpr_dialog_title))
-            alertDialog.setMessage(getString(R.string.gdpr_dialog_message))
-            alertDialog.setButton(
-                AlertDialog.BUTTON_NEUTRAL,
-                "OK"
-            ) { dialog, _ ->
-                sharedEditor.putBoolean("GDPR_shown", true)
-                sharedEditor.commit()
-                dialog.dismiss()
-            }
-            alertDialog.show()
-        }
-    }
-
     private fun handleSwipeRefreshLayout() {
         swipeRefreshLayout.setColorSchemeResources(
             R.color.refresh_progress_1,
@@ -350,9 +333,33 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
         getElementsAccordingToTab()
 
+
         handleGDPRDialog(sharedPref.getBoolean("GDPR_shown", false))
     }
 
+    private fun getAndStoreAllItems() {
+        api.allItems().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>>
+            ) {
+                thread {
+                    if (response.body() != null) {
+                        val apiItems = (response.body() as ArrayList<Item>).filter {
+                            maybeTagFilter != null || filter(it.tags)
+                        } as ArrayList<Item>
+                        db.itemsDao().deleteAllItems()
+                        db.itemsDao()
+                            .insertAllItems(*(apiItems.map { it.toEntity() }).toTypedArray())
+                    }
+                }
+            }
+        })
+    }
+
     override fun onStop() {
         super.onStop()
         customTabActivityHelper.unbindCustomTabsService(this)
@@ -371,6 +378,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         userIdentifier = sharedPref.getString("unique_id", "")
         displayAccountHeader = sharedPref.getBoolean("account_header_displaying", false)
         infiniteScroll = sharedPref.getBoolean("infinite_loading", false)
+        itemsCaching = sharedPref.getBoolean("items_caching", false)
         hiddenTags = if (sharedPref.getString("hidden_tags", "").isNotEmpty()) {
             sharedPref.getString("hidden_tags", "").replace("\\s".toRegex(), "").split(",")
         } else {
@@ -729,8 +737,10 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         thread {
             var drawerData = DrawerData(db.drawerDataDao().tags().map { it.toView() },
                                         db.drawerDataDao().sources().map { it.toView() })
-            handleDrawerData(drawerData, loadedFromCache = true)
-            drawerApiCalls(drawerData)
+            runOnUiThread {
+                handleDrawerData(drawerData, loadedFromCache = true)
+                drawerApiCalls(drawerData)
+            }
         }
     }
 
@@ -854,6 +864,15 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         appendResults: Boolean = false,
         offsetOverride: Int? = null
     ) {
+        fun doGetAccordingToTab() {
+            when (elementsShown) {
+                UNREAD_SHOWN -> getUnRead(appendResults)
+                READ_SHOWN -> getRead(appendResults)
+                FAV_SHOWN -> getStarred(appendResults)
+                else -> getUnRead(appendResults)
+            }
+        }
+
         offset = if (appendResults && offsetOverride === null) {
             (offset + itemsNumber)
         } else {
@@ -861,12 +880,35 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         }
         firstVisible = if (appendResults) firstVisible else 0
 
-        when (elementsShown) {
-            UNREAD_SHOWN -> getUnRead(appendResults)
-            READ_SHOWN -> getRead(appendResults)
-            FAV_SHOWN -> getStarred(appendResults)
-            else -> getUnRead(appendResults)
+        if (itemsCaching) {
+
+            if (!swipeRefreshLayout.isRefreshing) {
+                swipeRefreshLayout.post { swipeRefreshLayout.isRefreshing = true }
+            }
+
+            thread {
+                val dbItems = db.itemsDao().items().map { it.toView() }
+                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 {
+                        doGetAccordingToTab()
+                        getAndStoreAllItems()
+                    }
+                }
+            }
+
+        } else {
+            doGetAccordingToTab()
         }
+
     }
 
     private fun filter(tags: String): Boolean {
@@ -880,9 +922,10 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         call: (String?, Long?, String?) -> Call<List<Item>>
     ) {
         fun handleItemsResponse(response: Response<List<Item>>) {
-            val shouldUpdate = (response.body() != items)
+            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)
@@ -902,9 +945,8 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                     allItems = ArrayList()
                 }
             }
-            if (shouldUpdate) {
-                handleListResult(appendResults)
-            }
+
+            handleListResult(appendResults)
 
             if (!appendResults) mayBeEmpty()
             swipeRefreshLayout.isRefreshing = false
@@ -1269,8 +1311,26 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             else -> badgeNew // if !elementsShown then unread are fetched.
         }
 
-    fun updateItems(adapterItems: ArrayList<Item>) {
+    private fun updateItems(adapterItems: ArrayList<Item>) {
         items = adapterItems
     }
+
+    private fun handleGDPRDialog(GDPRShown: Boolean) {
+        val sharedEditor = sharedPref.edit()
+        if (!GDPRShown) {
+            val alertDialog = AlertDialog.Builder(this).create()
+            alertDialog.setTitle(getString(R.string.gdpr_dialog_title))
+            alertDialog.setMessage(getString(R.string.gdpr_dialog_message))
+            alertDialog.setButton(
+                AlertDialog.BUTTON_NEUTRAL,
+                "OK"
+            ) { dialog, _ ->
+                sharedEditor.putBoolean("GDPR_shown", true)
+                sharedEditor.commit()
+                dialog.dismiss()
+            }
+            alertDialog.show()
+        }
+    }
 }
 
diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/settings/SettingsActivity.java b/app/src/main/java/apps/amine/bou/readerforselfoss/settings/SettingsActivity.java
index ff1b573..69e8f48 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/settings/SettingsActivity.java
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/settings/SettingsActivity.java
@@ -135,6 +135,7 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
         return PreferenceFragment.class.getName().equals(fragmentName)
                 || GeneralPreferenceFragment.class.getName().equals(fragmentName)
                 || ArticleViewerPreferenceFragment.class.getName().equals(fragmentName)
+                || OfflinePreferenceFragment.class.getName().equals(fragmentName)
                 || DebugPreferenceFragment.class.getName().equals(fragmentName)
                 || LinksPreferenceFragment.class.getName().equals(fragmentName)
                 || ThemePreferenceFragment.class.getName().equals(fragmentName);
@@ -363,6 +364,27 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
         }
     }
 
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    public static class OfflinePreferenceFragment extends PreferenceFragment {
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            addPreferencesFromResource(R.xml.pref_offline);
+            setHasOptionsMenu(true);
+        }
+
+        @Override
+        public boolean onOptionsItemSelected(MenuItem item) {
+            int id = item.getItemId();
+            if (id == android.R.id.home) {
+                getActivity().finish();
+                return true;
+            }
+            return super.onOptionsItemSelected(item);
+        }
+    }
+
+
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
diff --git a/app/src/main/res/drawable-hdpi/ic_signal_wifi_statusbar_not_connected.png b/app/src/main/res/drawable-hdpi/ic_signal_wifi_statusbar_not_connected.png
new file mode 100644
index 0000000000000000000000000000000000000000..f45bb361f7adcd32ee1578fb983711d15a3d0217
GIT binary patch
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diff --git a/app/src/main/res/drawable-mdpi/ic_signal_wifi_statusbar_not_connected.png b/app/src/main/res/drawable-mdpi/ic_signal_wifi_statusbar_not_connected.png
new file mode 100644
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GIT binary patch
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diff --git a/app/src/main/res/drawable-xhdpi/ic_signal_wifi_statusbar_not_connected.png b/app/src/main/res/drawable-xhdpi/ic_signal_wifi_statusbar_not_connected.png
new file mode 100644
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GIT binary patch
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GIT binary patch
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z<U<&$Om0yXbM7J~ikO39GI?2KZ2N`Vy|ljosKMkNJO-41^`XWwU#0OJPzZynqGH(p
zKpW;TVXCC)VW2g0n4<gvTLmcpfgY<z`{oE@BOW49pg@5F1@f@|1CMkosb&M=u>b%7
M07*qoM6N<$f;~%2ivR!s

literal 0
HcmV?d00001

diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 8e56321..1ee6ad1 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -148,4 +148,8 @@
     <string name="acra_login">Enable logging</string>
     <string name="drawer_item_hidden_tags">Hidden Tags</string>
     <string name="unmark">Mark item as unread</string>
+    <string name="pref_header_offline">Offline and cache</string>
+    <string name="pref_switch_items_caching_off">Articles won\'t be saved to the device memory, and the app won\'t be usable offline.</string>
+    <string name="pref_switch_items_caching_on">Articles will be saved to the device memory and will be used for offline use.</string>
+    <string name="pref_switch_items_caching">Save items for offline use</string>
 </resources>
diff --git a/app/src/main/res/xml/pref_headers.xml b/app/src/main/res/xml/pref_headers.xml
index 79c18aa..62fa491 100644
--- a/app/src/main/res/xml/pref_headers.xml
+++ b/app/src/main/res/xml/pref_headers.xml
@@ -11,6 +11,12 @@
         android:icon="@drawable/ic_chrome_reader_mode_black_24"
         android:title="@string/pref_header_viewer"/>
 
+
+    <header
+        android:fragment="apps.amine.bou.readerforselfoss.settings.SettingsActivity$OfflinePreferenceFragment"
+        android:icon="@drawable/ic_signal_wifi_statusbar_not_connected"
+        android:title="@string/pref_header_offline"/>
+
     <header
         android:fragment="apps.amine.bou.readerforselfoss.settings.SettingsActivity$DebugPreferenceFragment"
         android:icon="@drawable/ic_bug_report"
diff --git a/app/src/main/res/xml/pref_offline.xml b/app/src/main/res/xml/pref_offline.xml
new file mode 100644
index 0000000..35e62a0
--- /dev/null
+++ b/app/src/main/res/xml/pref_offline.xml
@@ -0,0 +1,8 @@
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <SwitchPreference
+        android:defaultValue="false"
+        android:key="items_caching"
+        android:summaryOff="@string/pref_switch_items_caching_off"
+        android:summaryOn="@string/pref_switch_items_caching_on"
+        android:title="@string/pref_switch_items_caching" />
+</PreferenceScreen>