Perform network connectivity checks in the repository

androidApp/src/main/java/bou/amine/apps/readerforselfossv2/android/MyApp.kt

@@ -13,6 +13,7 @@ import bou.amine.apps.readerforselfossv2.DI.networkModule
 import bou.amine.apps.readerforselfossv2.android.utils.Config
 import bou.amine.apps.readerforselfossv2.android.utils.glide.loadMaybeBasicAuth
 import bou.amine.apps.readerforselfossv2.repository.Repository
+import bou.amine.apps.readerforselfossv2.utils.NetworkStatus
 import com.bumptech.glide.Glide
 import com.bumptech.glide.request.RequestOptions
 import com.ftinc.scoop.Scoop
@@ -25,7 +26,7 @@ class MyApp : MultiDexApplication(), DIAware {
 
     override val di by DI.lazy {
         import(networkModule)
-        bind<Repository>() with singleton { Repository(instance(), instance()) }
+        bind<Repository>() with singleton { Repository(instance(), instance(), NetworkStatus(applicationContext)) }
     }
 
     private lateinit var config: Config

shared/build.gradle.kts

@@ -36,6 +36,9 @@ kotlin {
 
                 //Logging
                 implementation("io.github.aakira:napier:2.6.1")
+
+                // Network information
+                implementation("com.github.ln-12:multiplatform-connectivity-status:1.1.0")
             }
         }
         val commonTest by getting {

shared/src/androidMain/kotlin/bou/amine/apps/readerforselfossv2/utils/NetworkStatus.kt

@@ -0,0 +1,17 @@
+package bou.amine.apps.readerforselfossv2.utils
+
+import android.content.Context
+import com.github.`ln-12`.library.ConnectivityStatus
+
+actual class NetworkStatus(context: Context) {
+    private val connectivityStatus = ConnectivityStatus(context)
+    actual val current = connectivityStatus.isNetworkConnected
+
+    actual fun start() {
+        connectivityStatus.start()
+    }
+
+    actual fun stop() {
+        connectivityStatus.stop()
+    }
+}

shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/repository/RepositoryImpl.kt

@@ -5,16 +5,18 @@ import bou.amine.apps.readerforselfossv2.rest.SelfossModel
 import bou.amine.apps.readerforselfossv2.service.ApiDetailsService
 import bou.amine.apps.readerforselfossv2.utils.DateUtils
 import bou.amine.apps.readerforselfossv2.utils.ItemType
+import bou.amine.apps.readerforselfossv2.utils.NetworkStatus
 import com.russhwolf.settings.Settings
 import io.github.aakira.napier.Napier
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 
-class Repository(private val api: SelfossApi, private val apiDetails: ApiDetailsService) {
+class Repository(private val api: SelfossApi, private val apiDetails: ApiDetailsService, networkStatus: NetworkStatus) {
     val settings = Settings()
 
     var items = ArrayList<SelfossModel.Item>()
+    private val isConnectionAvailable = networkStatus.current
 
     var baseUrl = apiDetails.getBaseUrl()
     lateinit var dateUtils: DateUtils
@@ -36,6 +38,7 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
     set(value) {field = if (value < 0) { 0 } else { value } }
 
     init {
+        networkStatus.start()
         // TODO: Dispatchers.IO not available in KMM, an alternative solution should be found
         CoroutineScope(Dispatchers.Main).launch {
             updateApiVersion()
@@ -45,40 +48,65 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
     }
 
     suspend fun getNewerItems(): ArrayList<SelfossModel.Item> {
-        // TODO: Check connectivity, use the updatedSince parameter
+        // TODO: Use the updatedSince parameter
-        val fetchedItems = api.getItems(displayedItems.type,
+        if (isConnectionAvailable.value) {
+            val fetchedItems = api.getItems(
+                displayedItems.type,
                 settings.getString("prefer_api_items_number", "200").toInt(),
                 offset = 0,
                 tagFilter?.tag,
                 sourceFilter?.id?.toLong(),
                 searchFilter,
-            null)
+                null
+            )
 
             if (fetchedItems != null) {
                 items = ArrayList(fetchedItems)
             }
+        } else {
+            // TODO: Provide an error message if the connection is not available.
+            // TODO: Get items from the database
+        }
         return items
     }
 
     suspend fun getOlderItems(): ArrayList<SelfossModel.Item> {
-        // TODO: Check connectivity
+        if (isConnectionAvailable.value) {
             val offset = items.size
-        val fetchedItems = api.getItems(displayedItems.type,
+            val fetchedItems = api.getItems(
+                displayedItems.type,
                 settings.getString("prefer_api_items_number", "200").toInt(),
                 offset,
                 tagFilter?.tag,
                 sourceFilter?.id?.toLong(),
                 searchFilter,
-            null)
+                null
+            )
 
             if (fetchedItems != null) {
                 appendItems(fetchedItems)
             }
+        } else {
+            // TODO: Provide an error message
+        }
         return items
     }
 
-    suspend fun allItems(itemType: ItemType): List<SelfossModel.Item>? =
+    suspend fun allItems(itemType: ItemType): List<SelfossModel.Item>? {
-        api.getItems(itemType.type, 200, 0, tagFilter?.tag, sourceFilter?.id?.toLong(), searchFilter, null)
+        return if (isConnectionAvailable.value) {
+            api.getItems(
+                itemType.type,
+                200,
+                0,
+                tagFilter?.tag,
+                sourceFilter?.id?.toLong(),
+                searchFilter,
+                null
+            )
+        } else {
+            null
+        }
+    }
 
     private fun appendItems(fetchedItems: List<SelfossModel.Item>) {
         // TODO: Store in DB if enabled by user
@@ -94,8 +122,8 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
     }
 
     suspend fun reloadBadges(): Boolean {
-        // TODO: Check connectivity, calculate from DB
         var success = false
+        if (isConnectionAvailable.value) {
             val response = api.stats()
             if (response != null) {
                 badgeUnread = response.unread
@@ -103,68 +131,99 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
                 badgeStarred = response.starred
                 success = true
             }
+        } else {
+            // TODO: Compute badges from database
+        }
         return success
     }
 
     suspend fun getTags(): List<SelfossModel.Tag>? {
-        // TODO: Check success, store in DB
+        // TODO: Store in DB
-        return api.tags()
+        return if (isConnectionAvailable.value) {
+            api.tags()
+        } else {
+            // TODO: Compute from database
+            null
+        }
     }
 
     suspend fun getSpouts(): Map<String, SelfossModel.Spout>? {
-        // TODO: Check success, store in DB
+        // TODO: Store in DB
-        return api.spouts()
+        return if (isConnectionAvailable.value) {
+            api.spouts()
+        } else {
+            // TODO: Compute from database
+            null
+        }
     }
 
     suspend fun getSources(): ArrayList<SelfossModel.Source>? {
-        // TODO: Check success
+        // TODO: Store in DB
-        return api.sources()
+        return if (isConnectionAvailable.value) {
+            api.sources()
+        } else {
+            // TODO: Compute from database
+            null
+        }
     }
 
     suspend fun markAsRead(id: Int): Boolean {
-        // TODO: Check internet connection
+        var success = false
-        val success = api.markAsRead(id.toString())?.isSuccess == true
+
+        if (isConnectionAvailable.value) {
+            success = api.markAsRead(id.toString())?.isSuccess == true
 
             if (success) {
                 markAsReadLocally(items.first { it.id == id })
             }
+        }
         return success
     }
 
     suspend fun unmarkAsRead(id: Int): Boolean {
-        // TODO: Check internet connection
+        var success = false
-        val success = api.unmarkAsRead(id.toString())?.isSuccess == true
+
+        if (isConnectionAvailable.value) {
+            success = api.unmarkAsRead(id.toString())?.isSuccess == true
 
             if (success) {
                 unmarkAsReadLocally(items.first { it.id == id })
             }
+        }
         return success
     }
 
     suspend fun starr(id: Int): Boolean {
-        // TODO: Check success, store in DB
+        var success = false
-        val success = api.starr(id.toString())?.isSuccess == true
+
+        if (isConnectionAvailable.value) {
+            success = api.starr(id.toString())?.isSuccess == true
 
             if (success) {
                 starrLocally(items.first { it.id == id })
             }
+        }
         return success
     }
 
     suspend fun unstarr(id: Int): Boolean {
-        // TODO: Check internet connection
+        var success = false
-        val success = api.unstarr(id.toString())?.isSuccess == true
+
+        if (isConnectionAvailable.value) {
+            success = api.unstarr(id.toString())?.isSuccess == true
 
             if (success) {
                 unstarrLocally(items.first { it.id == id })
             }
+        }
         return success
     }
 
     suspend fun markAllAsRead(ids: List<Int>): Boolean {
-        // TODO: Check Internet connectivity, store in DB
+        var success = false
 
-        val success = api.markAllAsRead(ids.map { it.toString() })?.isSuccess == true
+        if (isConnectionAvailable.value) {
+            success = api.markAllAsRead(ids.map { it.toString() })?.isSuccess == true
 
             if (success) {
                 val itemsToMark = items.filter { it.id in ids }
@@ -172,6 +231,7 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
                     markAsReadLocally(item)
                 }
             }
+        }
         return success
     }
 
@@ -214,46 +274,52 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
         tags: String,
         filter: String
     ): Boolean {
-        // TODO: Check connectivity
+        var response = false
-        val response = api.createSourceForVersion(
+        if (isConnectionAvailable.value) {
+            response = api.createSourceForVersion(
                 title,
                 url,
                 spout,
                 tags,
                 filter,
                 apiMajorVersion
-        )
+            )?.isSuccess == true
+        }
 
-        return response != null
+        return response
     }
 
     suspend fun deleteSource(id: Int): Boolean {
-        // TODO: Check connectivity, store in DB
+        // TODO: Store in DB
         var success = false
+        if (isConnectionAvailable.value) {
             val response = api.deleteSource(id)
             if (response != null) {
                 success = response.isSuccess
             }
+        }
 
         return success
     }
 
     suspend fun updateRemote(): Boolean {
-        // TODO: Handle connectivity issues
+        var response = false
-        val response = api.update()
+        if (isConnectionAvailable.value) {
-        return response?.isSuccess ?: false
+            response = api.update()?.isSuccess == true
+        }
+        return response
     }
 
     suspend fun login(): Boolean {
         var result = false
+        if (isConnectionAvailable.value) {
             try {
                 val response = api.login()
-            if (response != null && response.isSuccess) {
+                result = response?.isSuccess == true
-                result = true
-            }
             } catch (cause: Throwable) {
                 Napier.e(cause.stackTraceToString(), tag = "RepositoryImpl.updateRemote")
             }
+        }
         return result
     }
 
@@ -271,13 +337,14 @@ class Repository(private val api: SelfossApi, private val apiDetails: ApiDetails
     }
 
     private suspend fun updateApiVersion() {
-        // TODO: Handle connectivity issues
+        apiMajorVersion = settings.getInt("apiVersionMajor", 0)
+
+        if (isConnectionAvailable.value) {
             val fetchedVersion = api.version()
             if (fetchedVersion != null) {
                 apiMajorVersion = fetchedVersion.getApiMajorVersion()
                 settings.putInt("apiVersionMajor", apiMajorVersion)
-        } else {
+            }
-            apiMajorVersion = settings.getInt("apiVersionMajor", 0)
         }
     }
 

shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/utils/NetworkStatus.kt

@@ -0,0 +1,9 @@
+package bou.amine.apps.readerforselfossv2.utils
+
+import kotlinx.coroutines.flow.MutableStateFlow
+
+expect class NetworkStatus {
+    val current: MutableStateFlow<Boolean>
+    fun start()
+    fun stop()
+}

shared/src/iosMain/kotlin/bou/amine/apps/readerforselfossv2/utils/NetworkStatus.kt

@@ -0,0 +1,27 @@
+package bou.amine.apps.readerforselfossv2.utils
+
+import com.github.`ln-12`.library.ConnectivityStatus
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.launch
+
+actual class NetworkStatus {
+    private val connectivityStatus: ConnectivityStatus = ConnectivityStatus()
+    actual val current: MutableStateFlow<Boolean> = connectivityStatus.isNetworkConnected
+
+    actual fun start() {
+        connectivityStatus.start()
+    }
+
+    actual fun stop() {
+        connectivityStatus.stop()
+    }
+
+    fun getStatus(success: (Boolean) -> Unit) {
+        MainScope().launch {
+            connectivityStatus.isNetworkConnected.collect { status ->
+                success(status)
+            }
+        }
+    }
+}