update settings

shared/src/commonMain/kotlin/su/reya/coop/Settings.kt

@@ -0,0 +1,22 @@
+package su.reya.coop
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Settings(
+    val theme: Theme = Theme.System,
+    val dynamicColor: Boolean = true,
+    val media: Media = Media.AlwaysEnabled,
+    val screening: Boolean = true,
+    val blossomServer: String? = "https://blossom.band",
+)
+
+@Serializable
+enum class Theme {
+    Light, Dark, System
+}
+
+@Serializable
+enum class Media {
+    Disabled, DisabledForMobileData, AlwaysEnabled
+}

shared/src/commonMain/kotlin/su/reya/coop/repository/SettingsRepository.kt

@@ -0,0 +1,37 @@
+package su.reya.coop.repository
+
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import su.reya.coop.AppStorage
+import su.reya.coop.Settings
+
+class SettingsRepository(
+    private val storage: AppStorage
+) {
+    companion object {
+        private const val KEY_SETTINGS = "app_settings"
+    }
+
+    private val json = Json {
+        ignoreUnknownKeys = true
+        encodeDefaults = true
+    }
+
+    suspend fun save(settings: Settings) {
+        val jsonString = json.encodeToString(settings)
+        storage.set(KEY_SETTINGS, jsonString)
+    }
+
+    suspend fun load(): Settings {
+        val jsonString = storage.get(KEY_SETTINGS)
+        return if (jsonString != null) {
+            try {
+                json.decodeFromString<Settings>(jsonString)
+            } catch (_: Exception) {
+                Settings()
+            }
+        } else {
+            Settings()
+        }
+    }
+}