fix(external-link): threading

app/src/main/java/com/owncloud/android/datamodel/ExternalLinksProvider.kt

@@ -0,0 +1,108 @@
+/*
+ * Nextcloud - Android Client
+ *
+ * SPDX-FileCopyrightText: 2026 Alper Ozturk <alper.ozturk@nextcloud.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+package com.owncloud.android.datamodel
+
+import android.content.ContentResolver
+import android.content.ContentValues
+import android.database.Cursor
+import com.owncloud.android.db.ProviderMeta
+import com.owncloud.android.lib.common.ExternalLink
+import com.owncloud.android.lib.common.ExternalLinkType
+import com.owncloud.android.lib.common.utils.Log_OC
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+class ExternalLinksProvider(private val contentResolver: ContentResolver) {
+    private val ioScope = CoroutineScope(Dispatchers.IO)
+
+    fun storeExternalLink(externalLink: ExternalLink) {
+        ioScope.launch {
+            Log_OC.v(TAG, "Adding " + externalLink.name)
+            val cv = createContentValuesFromExternalLink(externalLink)
+            contentResolver.insert(ProviderMeta.ProviderTableMeta.CONTENT_URI_EXTERNAL_LINKS, cv)
+                ?: Log_OC.e(TAG, "Failed to insert ${externalLink.name} into external link db.")
+        }
+    }
+
+    fun deleteAllExternalLinks() {
+        ioScope.launch {
+            contentResolver.delete(
+                ProviderMeta.ProviderTableMeta.CONTENT_URI_EXTERNAL_LINKS,
+                null,
+                null
+            )
+        }
+    }
+
+    fun getExternalLink(type: ExternalLinkType, onComplete: (List<ExternalLink>) -> Unit) {
+        ioScope.launch {
+            val cursor = contentResolver.query(
+                ProviderMeta.ProviderTableMeta.CONTENT_URI_EXTERNAL_LINKS,
+                null,
+                "type = ?",
+                arrayOf(type.toString()),
+                null
+            ) ?: run {
+                Log_OC.e(TAG, "DB error restoring externalLinks.")
+                withContext(Dispatchers.Main) {
+                    onComplete(emptyList())
+                }
+                return@launch
+            }
+
+            val result = cursor.use { c ->
+                generateSequence { if (c.moveToNext()) c else null }
+                    .map { createExternalLinkFromCursor(it) }
+                    .toList()
+            }
+
+            return@launch withContext(Dispatchers.Main) {
+                onComplete(result)
+            }
+        }
+    }
+
+    private fun createContentValuesFromExternalLink(externalLink: ExternalLink): ContentValues = ContentValues().apply {
+        put(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_ICON_URL, externalLink.iconUrl)
+        put(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_LANGUAGE, externalLink.language)
+        put(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_TYPE, externalLink.type.toString())
+        put(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_NAME, externalLink.name)
+        put(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_URL, externalLink.url)
+        put(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_REDIRECT, externalLink.redirect)
+    }
+
+    private fun createExternalLinkFromCursor(cursor: Cursor): ExternalLink {
+        fun col(name: String) = cursor.getColumnIndexOrThrow(name)
+        val typeStr = cursor.getString(col(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_TYPE))
+
+        return ExternalLink(
+            id = cursor.getInt(col(ProviderMeta.ProviderTableMeta._ID)),
+            iconUrl = cursor.getString(col(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_ICON_URL)),
+            language = cursor.getString(col(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_LANGUAGE)),
+            type = when (typeStr) {
+                "link" -> ExternalLinkType.LINK
+                "settings" -> ExternalLinkType.SETTINGS
+                "quota" -> ExternalLinkType.QUOTA
+                else -> ExternalLinkType.UNKNOWN
+            },
+            name = cursor.getString(col(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_NAME)),
+            url = cursor.getString(col(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_URL)),
+            redirect = cursor.getInt(col(ProviderMeta.ProviderTableMeta.EXTERNAL_LINKS_REDIRECT)) == 1
+        )
+    }
+
+    fun cleanup() {
+        ioScope.cancel()
+    }
+
+    companion object {
+        private val TAG: String = ExternalLinksProvider::class.java.getSimpleName()
+    }
+}