dart pub add code_assets hooks native_toolchain_c record_use dev:ffigen

dependencies:
  code_assets: ^1.0.0
  hooks: ^0.1.0
  native_toolchain_c: ^0.1.0
  record_use: ^0.6.0

dev_dependencies:
  ffigen: ^20.1.1

dart test

#ifndef SQLITE3_H_
#define SQLITE3_H_

const char *sqlite3_libversion(void);

#endif // SQLITE3_H_

// AUTO-GENERATED FILE - DO NOT MODIFY.
// Generated via ffigen.

const recordUseMapping = {
  'sqlite3_libversion': 'sqlite3_libversion',
};

import 'package:native_toolchain_c/native_toolchain_c.dart';

/// The C build specification for the sqlite library.
final cLibrary = CLibrary(
  name: 'sqlite3',
  assetName: 'src/third_party/sqlite3.g.dart',
  sources: ['third_party/sqlite/sqlite3.c'],
);

import 'package:code_assets/code_assets.dart';
import 'package:hooks/hooks.dart';
import 'package:sqlite/src/c_library.dart';

void main(List<String> args) async {
  await build(args, (input, output) async {
    if (input.config.buildCodeAssets) {
      await cLibrary.build(
        input: input,
        output: output,
        defines: {
          if (input.config.code.targetOS == OS.windows)
            // Ensure C functions are explicitly exported in the Windows DLL
            'SQLITE_API': '__declspec(dllexport)',
        },
      );
    }
  });
}

import 'package:hooks/hooks.dart';
import 'package:native_toolchain_c/native_toolchain_c.dart';
import 'package:record_use/record_use.dart';
import 'package:sqlite/src/c_library.dart';
import 'package:sqlite/src/third_party/sqlite3.record_use_mapping.g.dart';

void main(List<String> arguments) async {
  await link(arguments, (input, output) async {
    await cLibrary.link(
      input: input,
      output: output,
      linkerOptions: LinkerOptions.treeshake(
        // Map Dart Method references back to raw C symbol names
        symbolsToKeep: input.recordedUses?.calls.keys.cast<Method>().map(
          (e) => recordUseMapping[e.name]!,
        ),
      ),
    );
  });
}

const assetHashes = {
  'libnative_add_macos_arm64.dylib': '4a88f50438a98402db2dbd47b59eb412',
  'libnative_add_linux_x64.so': '9f5e15043aa98402dcdbbd47b59ea520',
  'native_add_windows_x64.dll': 'a881e5043ba98402acdebd47b59fa321',
};

import 'dart:io';
import 'package:code_assets/code_assets.dart';
import 'package:crypto/crypto.dart';

const version = '1.0.0';

Uri downloadUri(String target) => Uri.parse(
  'https://github.com/my-org/my-native-repo/releases/download/$version/$target',
);

Future<File> downloadAsset(
  OS targetOS,
  Architecture targetArchitecture,
  Directory outputDir,
) async {
  final fileName = targetOS.dylibFileName('native_add_${targetOS.name}_${targetArchitecture.name}');
  final uri = downloadUri(fileName);
  
  final client = HttpClient()..findProxy = HttpClient.findProxyFromEnvironment;
  final request = await client.getUrl(uri);
  final response = await request.close();
  
  if (response.statusCode != 200) {
    throw ArgumentError('Download target $uri failed: Code ${response.statusCode}');
  }
  
  final targetFile = File.fromUri(outputDir.uri.resolve(fileName));
  await targetFile.create(recursive: true);
  await response.pipe(targetFile.openWrite());
  
  return targetFile;
}

Future<String> hashAsset(File file) async {
  return md5.convert(await file.readAsBytes()).toString();
}

import 'dart:io';
import 'package:code_assets/code_assets.dart';
import 'package:hooks/hooks.dart';
import 'package:my_download_package/src/hook_helpers/hashes.dart';
import 'package:my_download_package/src/hook_helpers/download.dart';
import 'package:native_toolchain_c/native_toolchain_c.dart';

void main(List<String> args) async {
  await build(args, (input, output) async {
    final localBuild = input.userDefines['local_build'] as bool? ?? false;

    if (localBuild) {
      final name = 'native_add_${input.config.code.targetOS.name}_${input.config.code.targetArchitecture.name}';
      final builder = CBuilder.library(
        name: name,
        assetName: 'native_add.dart',
        sources: ['src/native_add.c'],
      );
      await builder.run(input: input, output: output);
    } else {
      final targetOS = input.config.code.targetOS;
      final targetArch = input.config.code.targetArchitecture;
      final outputDir = Directory.fromUri(input.outputDirectory);

      final file = await downloadAsset(targetOS, targetArch, outputDir);

      final fileHash = await hashAsset(file);
      final expectedFileName = targetOS.dylibFileName('native_add_${targetOS.name}_${targetArch.name}');
      final expectedHash = assetHashes[expectedFileName];

      if (fileHash != expectedHash) {
        throw Exception(
          'Security Mismatch: File $expectedFileName hash verification failed! '
          'Found hash: $fileHash, expected: $expectedHash.'
        );
      }

      output.assets.code.add(
        CodeAsset(
          package: input.packageName,
          name: 'native_add.dart',
          linkMode: DynamicLoadingBundled(),
          file: file.uri,
        ),
      );
    }
  });
}

dart test