feat: support for exporting and importing favorites

you-apps · Oct 23, 2023 · b579aa1 · b579aa1
1 parent d6b33cf
commit b579aa1
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Showing 6 changed files with 111 additions and 1 deletion.
diff --git a/app/src/main/java/com/bnyro/wallpaper/db/obj/BackupFile.kt b/app/src/main/java/com/bnyro/wallpaper/db/obj/BackupFile.kt
@@ -0,0 +1,5 @@
+package com.bnyro.wallpaper.db.obj
+
+data class BackupFile(
+    val favorites: List<Wallpaper> = emptyList()
+)
diff --git a/app/src/main/java/com/bnyro/wallpaper/db/obj/Wallpaper.kt b/app/src/main/java/com/bnyro/wallpaper/db/obj/Wallpaper.kt
@@ -6,7 +6,7 @@ import androidx.room.PrimaryKey
 
 @Entity(tableName = "favorites")
 data class Wallpaper(
-    @PrimaryKey val imgSrc: String,
+    @PrimaryKey val imgSrc: String = "",
     @ColumnInfo val title: String? = null,
     @ColumnInfo val url: String? = null,
     @ColumnInfo var author: String? = null,

diff --git a/app/src/main/java/com/bnyro/wallpaper/ext/Context.kt b/app/src/main/java/com/bnyro/wallpaper/ext/Context.kt
@@ -0,0 +1,11 @@
+package com.bnyro.wallpaper.ext
+
+import android.content.Context
+import android.widget.Toast
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+suspend fun Context.toastFromMainThread(text: String?, length: Int = Toast.LENGTH_SHORT)
+= withContext(Dispatchers.Main) {
+    Toast.makeText(this@toastFromMainThread, text, length).show()
+}
diff --git a/app/src/main/java/com/bnyro/wallpaper/ui/pages/SettingsPage.kt b/app/src/main/java/com/bnyro/wallpaper/ui/pages/SettingsPage.kt
@@ -1,13 +1,20 @@
 package com.bnyro.wallpaper.ui.pages
 
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.toMutableStateList
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
@@ -25,8 +32,11 @@ import com.bnyro.wallpaper.ui.components.prefs.CheckboxPref
 import com.bnyro.wallpaper.ui.components.prefs.ListPreference
 import com.bnyro.wallpaper.ui.components.prefs.SettingsCategory
 import com.bnyro.wallpaper.ui.models.MainModel
+import com.bnyro.wallpaper.util.BackupHelper
 import com.bnyro.wallpaper.util.Preferences
 import com.bnyro.wallpaper.util.WorkerHelper
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 
 @Composable
 fun SettingsPage(
@@ -36,6 +46,20 @@ fun SettingsPage(
     val wallpaperConfigs = remember {
         Preferences.getWallpaperConfigs().toMutableStateList()
     }
+    val scope = rememberCoroutineScope()
+
+    val createFavoritesBackup =
+        rememberLauncherForActivityResult(ActivityResultContracts.CreateDocument(BackupHelper.JSON_MIME)) {
+            scope.launch(Dispatchers.IO) {
+                BackupHelper.backupFavorites(it ?: return@launch, context)
+            }
+        }
+    val restoreFavoritesBackup =
+        rememberLauncherForActivityResult(ActivityResultContracts.OpenDocument()) {
+            scope.launch(Dispatchers.IO) {
+                BackupHelper.restoreFavorites(it ?: return@launch, context)
+            }
+        }
 
     val scrollState = rememberScrollState()
     Column(
@@ -169,5 +193,29 @@ fun SettingsPage(
                 }
             }
         }
+
+        AboutContainer {
+            SettingsCategory(
+                title = stringResource(R.string.import_export)
+            )
+            Spacer(modifier = Modifier.height(6.dp))
+            Row {
+                Button(
+                    onClick = {
+                        restoreFavoritesBackup.launch(arrayOf(BackupHelper.JSON_MIME))
+                    }
+                ) {
+                    Text(stringResource(R.string.import_favorites))
+                }
+                Spacer(modifier = Modifier.width(6.dp))
+                Button(
+                    onClick = {
+                        createFavoritesBackup.launch("wall_you_favorites_backup.json")
+                    }
+                ) {
+                    Text(stringResource(R.string.export_favorites))
+                }
+            }
+        }
     }
 }
diff --git a/app/src/main/java/com/bnyro/wallpaper/util/BackupHelper.kt b/app/src/main/java/com/bnyro/wallpaper/util/BackupHelper.kt
@@ -0,0 +1,42 @@
+package com.bnyro.wallpaper.util
+
+import android.content.Context
+import android.net.Uri
+import com.bnyro.wallpaper.R
+import com.bnyro.wallpaper.db.DatabaseHolder
+import com.bnyro.wallpaper.db.obj.BackupFile
+import com.bnyro.wallpaper.ext.toastFromMainThread
+import com.fasterxml.jackson.databind.ObjectMapper
+
+object BackupHelper {
+    const val JSON_MIME = "application/json"
+    private val mapper by lazy {
+        ObjectMapper()
+    }
+
+    suspend fun backupFavorites(uri: Uri, context: Context) {
+        try {
+            val favorites = DatabaseHolder.Database.favoritesDao().getAll()
+            val backupFile = BackupFile(favorites = favorites)
+            context.contentResolver.openOutputStream(uri)?.use {
+                val favoritesJson = mapper.writeValueAsBytes(backupFile)
+                it.write(favoritesJson)
+            }
+            context.toastFromMainThread(context.getString(R.string.success))
+        } catch (e: Exception) {
+            context.toastFromMainThread(e.localizedMessage)
+        }
+    }
+
+    suspend fun restoreFavorites(uri: Uri, context: Context) {
+        try {
+            context.contentResolver.openInputStream(uri)?.use {
+                val backupFile = mapper.readValue(it.readBytes(), BackupFile::class.java)
+                DatabaseHolder.Database.favoritesDao().insertAll(*backupFile.favorites.toTypedArray())
+            }
+            context.toastFromMainThread(context.getString(R.string.success))
+        } catch (e: Exception) {
+            context.toastFromMainThread(e.localizedMessage)
+        }
+    }
+}
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -49,6 +49,10 @@
     <string name="combine_wallpaper_changers">Combined wallpaper changer</string>
     <string name="combine_wallpaper_changers_summary">Use the same wallpaper for home and lockscreen.</string>
     <string name="color_palette">Show color palette</string>
+    <string name="import_export">Import &amp; export</string>
+    <string name="import_favorites">Import favorites</string>
+    <string name="export_favorites">Export favorites</string>
+    <string name="success">Success!</string>
     <!-- Wallpaper changer source -->
     <string name="online">Online</string>
     <string name="local">Local</string>