Created
August 9, 2024 19:55
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| import 'dart:ffi'; | |
| import 'dart:io'; | |
| final sqliteUrl = 'https://github.com/powersync-ja/powersync-sqlite-core/releases/download/v0.1.7'; | |
| void main() async { | |
| final flutterPath = await _getFlutterInstallationPath(); | |
| if (flutterPath != null) { | |
| print('Flutter is installed at: $flutterPath'); | |
| } else { | |
| print('Flutter installation not found.'); | |
| return; | |
| } | |
| final sqliteCoreFilename = getLibraryForPlatform(); | |
| final powersyncPath = await findWritablePath(flutterPath); | |
| if (powersyncPath == null) { | |
| print('No writable path found for placing the dynamic library.'); | |
| return; | |
| } | |
| final sqliteCorePath = '$powersyncPath/$sqliteCoreFilename'; | |
| // Download dynamic library | |
| await downloadFile("$sqliteUrl/$sqliteCoreFilename", sqliteCorePath); | |
| final originalFile = File(sqliteCorePath); | |
| try { | |
| final newFileName = getFileNameForPlatform(); | |
| if (await originalFile.exists()) { | |
| final targetPath = '$powersyncPath/$newFileName'; | |
| try { | |
| // Rename the original file to the new file name within the writable directory | |
| await originalFile.rename(targetPath); | |
| print('File moved successfully to $targetPath'); | |
| } catch (e) { | |
| throw Exception('Error moving file: $e'); | |
| } | |
| } else { | |
| throw Exception('File $sqliteCoreFilename does not exist.'); | |
| } | |
| } on Exception catch (e) { | |
| print(e.toString()); | |
| } | |
| } | |
| Future<String?> _getFlutterInstallationPath() async { | |
| final result = await Process.run(Platform.isWindows ? 'where' : 'which', ['flutter']); | |
| if (result.exitCode == 0) { | |
| return result.stdout.trim(); | |
| } | |
| return null; | |
| } | |
| String getFileNameForPlatform() { | |
| switch (Abi.current()) { | |
| case Abi.macosArm64: | |
| case Abi.macosX64: | |
| return 'libpowersync.dylib'; | |
| case Abi.linuxX64: | |
| case Abi.linuxArm64: | |
| return 'libpowersync.so'; | |
| case Abi.windowsX64: | |
| return 'powersync.dll'; | |
| default: | |
| throw Exception( | |
| 'Unsupported processor architecture "${Abi.current()}". ' | |
| 'Please open an issue on GitHub to request it.', | |
| ); | |
| } | |
| } | |
| Future<void> downloadFile(String url, String savePath) async { | |
| print('Downloading: $url'); | |
| var httpClient = HttpClient(); | |
| var request = await httpClient.getUrl(Uri.parse(url)); | |
| var response = await request.close(); | |
| if (response.statusCode == HttpStatus.ok) { | |
| var file = File(savePath); | |
| await response.pipe(file.openWrite()); | |
| } else { | |
| print('Failed to download file: ${response.statusCode} ${response.reasonPhrase}'); | |
| } | |
| } | |
| String getLibraryForPlatform() { | |
| switch (Abi.current()) { | |
| case Abi.macosArm64: | |
| return 'libpowersync_aarch64.dylib'; | |
| case Abi.macosX64: | |
| return 'libpowersync_x64.dylib'; | |
| case Abi.linuxX64: | |
| return 'libpowersync_x64.so'; | |
| case Abi.linuxArm64: | |
| return 'libpowersync_aarch64.so'; | |
| case Abi.windowsX64: | |
| return 'powersync_x64.dll'; | |
| case Abi.windowsArm64: | |
| throw Exception('ARM64 Windows is not supported. ' | |
| 'Please use an x86_64 Windows machine or open a GitHub issue to request it'); | |
| default: | |
| throw Exception( | |
| 'Unsupported processor architecture "${Abi.current()}". ' | |
| 'Please open an issue on GitHub to request it.', | |
| ); | |
| } | |
| } | |
| Future<String?> findWritablePath(String flutterPath) async { | |
| final flutterDir = Directory(flutterPath).parent.parent; | |
| final engineDir = getEngineDirForPlatform(); | |
| final pathsToCheck = [ | |
| flutterDir.path + '/bin/cache/artifacts/engine/$engineDir/', | |
| flutterDir.path + '/bin/cache/artifacts/engine/$engineDir/Frameworks/', | |
| flutterDir.path + '/bin/cache/artifacts/engine/$engineDir/../../../', | |
| Directory(flutterPath).parent.path + '/lib', | |
| ]; | |
| for (final path in pathsToCheck) { | |
| final directory = Directory(path); | |
| if (await directory.exists() && directory.statSync().modeString().contains('w')) { | |
| print('Found writable path: $path'); | |
| return path; | |
| } | |
| } | |
| return null; | |
| } | |
| String getEngineDirForPlatform() { | |
| switch (Abi.current()) { | |
| case Abi.macosArm64: | |
| case Abi.macosX64: | |
| return 'darwin-x64'; | |
| case Abi.linuxX64: | |
| return 'linux-x64'; | |
| case Abi.linuxArm64: | |
| return 'linux-arm64'; | |
| case Abi.windowsX64: | |
| return 'windows-x64'; | |
| case Abi.windowsArm64: | |
| throw Exception('ARM64 Windows is not supported. ' | |
| 'Please use an x86_64 Windows machine or open a GitHub issue to request it'); | |
| default: | |
| throw Exception( | |
| 'Unsupported processor architecture "${Abi.current()}". ' | |
| 'Please open an issue on GitHub to request it.', | |
| ); | |
| } | |
| } |
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