Implement first steps for sending file share links to files client

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt

@@ -2660,6 +2660,69 @@ class ChatActivity :
         )
     }
 
+    fun isInstanceFileUrl(user: User, url: String): Boolean {
+        return url.startsWith(user.baseUrl!!) &&
+            (isInstanceInternalFileShareUrl(user.baseUrl!!, url) || isInstanceInternalFileUrl(user.baseUrl!!, url))
+    }
+
+    fun isInstanceInternalFileShareUrl(baseUrl: String, url: String): Boolean {
+        // https://cloud.nextcloud.com/f/41
+        return url.startsWith("$baseUrl/f/") || url.startsWith("$baseUrl/index.php/f/")
+    }
+
+    fun extractInstanceInternalFileShareFileId(url: String): String {
+        // https://cloud.nextcloud.com/f/41
+        return "41"
+    }
+
+    fun isInstanceInternalFileUrl(baseUrl: String, url: String): Boolean {
+        //https://cloud.nextcloud.com/apps/files/?dir=/Engineering&fileid=41
+        return url.startsWith("$baseUrl/apps/files/") || url.startsWith("$baseUrl/index.php/apps/files/")
+    }
+
+    fun extractInstanceInternalFileFileId(url: String): String {
+        // https://cloud.nextcloud.com/apps/files/?dir=/Engineering&fileid=41
+        return "41"
+    }
+
+    fun isInstanceInternalFileUrlNew(baseUrl: String, url: String): Boolean {
+        //https://cloud.nextcloud.com/apps/files/files/41?dir=/
+        return url.startsWith("$baseUrl/apps/files/files/") || url.startsWith("$baseUrl/index.php/apps/files/files/")
+    }
+
+    fun extractInstanceInternalFileFileIdNew(url: String): String {
+        // https://cloud.nextcloud.com/apps/files/files/41?dir=/
+        return "41"
+    }
+
+    override fun startActivity(intent: Intent) {
+        val user = currentUserProvider.currentUser.blockingGet()
+        if (intent.data != null && TextUtils.equals(intent.action, Intent.ACTION_VIEW)) {
+            val uri = intent.data.toString()
+            if (uri.startsWith(user.baseUrl!!)) {
+                if (isInstanceInternalFileShareUrl(user.baseUrl!!, uri)) {
+                    // https://cloud.nextcloud.com/f/41
+                    val fileViewerUtils = FileViewerUtils(this, user)
+                    fileViewerUtils.openFileInFilesApp(uri, extractInstanceInternalFileShareFileId(uri))
+                } else if (isInstanceInternalFileUrl(user.baseUrl!!, uri)) {
+                    // https://cloud.nextcloud.com/apps/files/?dir=/Engineering&fileid=41
+                    val fileViewerUtils = FileViewerUtils(this, user)
+                    fileViewerUtils.openFileInFilesApp(uri, extractInstanceInternalFileFileId(uri))
+                } else if (isInstanceInternalFileUrlNew(user.baseUrl!!, uri)) {
+                    // https://cloud.nextcloud.com/apps/files/?dir=/Engineering&fileid=41
+                    val fileViewerUtils = FileViewerUtils(this, user)
+                    fileViewerUtils.openFileInFilesApp(uri, extractInstanceInternalFileFileIdNew(uri))
+                } else {
+                    super.startActivity(intent)
+                }
+            } else {
+                super.startActivity(intent)
+            }
+        } else {
+            super.startActivity(intent)
+        }
+    }
+
     fun sendSelectLocalFileIntent() {
         if (!permissionUtil.isFilesPermissionGranted()) {
             requestReadFilesPermissions()