Delete media caches on startup (#1807)

Clear media caches on app startup

features/cachecleaner/api/build.gradle.kts

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    id("io.element.android-library")
+    alias(libs.plugins.anvil)
+}
+
+android {
+    namespace = "io.element.android.features.cachecleaner.api"
+}
+
+dependencies {
+    implementation(projects.libraries.architecture)
+    implementation(libs.androidx.startup)
+}

features/cachecleaner/api/src/main/kotlin/io/element/android/features/cachecleaner/api/CacheCleaner.kt

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+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.features.cachecleaner.api
+
+interface CacheCleaner {
+    /**
+     * Clear the cache subdirs holding temporarily decrypted content (such as media and voice messages).
+     *
+     * Will fail silently in case of errors while deleting the files.
+     */
+    fun clearCache()
+}

features/cachecleaner/api/src/main/kotlin/io/element/android/features/cachecleaner/api/CacheCleanerBindings.kt

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+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.features.cachecleaner.api
+
+import com.squareup.anvil.annotations.ContributesTo
+import io.element.android.libraries.di.AppScope
+
+@ContributesTo(AppScope::class)
+interface CacheCleanerBindings {
+    fun cacheCleaner(): CacheCleaner
+}

features/cachecleaner/api/src/main/kotlin/io/element/android/features/cachecleaner/api/CacheCleanerInitializer.kt

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+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.features.cachecleaner.api
+
+import android.content.Context
+import androidx.startup.Initializer
+import io.element.android.libraries.architecture.bindings
+
+class CacheCleanerInitializer : Initializer<Unit> {
+    override fun create(context: Context) {
+        context.bindings<CacheCleanerBindings>().cacheCleaner().clearCache()
+    }
+
+    override fun dependencies(): List<Class<out Initializer<*>>> = emptyList()
+}