linkPodspec function

Implementation

void linkPodspec(String pluginName, List<String> moduleLibs, {String baseDir = '.', List<ModuleInfo>? moduleInfos}) {
  final nitroNativePath = resolveNitroNativePath(baseDir);
  final podspecFile = File(p.join(baseDir, 'ios', '$pluginName.podspec'));
  if (!podspecFile.existsSync()) return;
  var content = podspecFile.readAsStringSync();
  bool modified = false;
  if (!content.contains("s.swift_version = '5.9'")) {
    content = content.replaceFirst(RegExp(r"s\.swift_version\s*=\s*'.+?'"), "s.swift_version = '5.9'");
    modified = true;
  }
  if (!content.contains("s.platform = :ios, '13.0'")) {
    content = content.replaceFirst(RegExp(r"s\.platform\s*=\s*:ios,\s*'.+?'"), "s.platform = :ios, '13.0'");
    modified = true;
  }
  if (!content.contains('HEADER_SEARCH_PATHS')) {
    content = content.replaceFirst(
      's.pod_target_xcconfig = {',
      "s.pod_target_xcconfig = {\n    'HEADER_SEARCH_PATHS' => '\$(inherited) \"\${PODS_ROOT}/../.symlinks/plugins/nitro/src/native\" \"\${PODS_TARGET_SRCROOT}/../src\" \"\${PODS_TARGET_SRCROOT}/../lib/src/generated/cpp\"',",
    );
    modified = true;
  } else {
    // If it exists, ensure it has the src/ and generated/cpp/ paths.
    if (!content.contains('PODS_TARGET_SRCROOT}/../src') || !content.contains('lib/src/generated/cpp')) {
      final match = RegExp(r"'HEADER_SEARCH_PATHS'\s*=>\s*'([^']+)'").firstMatch(content);
      if (match != null) {
        var paths = match.group(1)!;
        if (!paths.contains('PODS_TARGET_SRCROOT}/../src')) {
          paths += ' "\${PODS_TARGET_SRCROOT}/../src"';
        }
        if (!paths.contains('lib/src/generated/cpp')) {
          paths += ' "\${PODS_TARGET_SRCROOT}/../lib/src/generated/cpp"';
        }
        content = content.replaceFirst(match.group(0)!, "'HEADER_SEARCH_PATHS' => '$paths'");
        modified = true;
      }
    }
  }
  if (!content.contains("'DEFINES_MODULE' => 'YES'")) {
    content = content.replaceFirst('s.pod_target_xcconfig = {', "s.pod_target_xcconfig = {\n    'DEFINES_MODULE' => 'YES',");
    modified = true;
  }
  if (!content.contains("'CLANG_CXX_LANGUAGE_STANDARD'") && !content.contains('c++17')) {
    content = content.replaceFirst('s.pod_target_xcconfig = {', "s.pod_target_xcconfig = {\n    'CLANG_CXX_LANGUAGE_STANDARD' => 'c++17',");
    modified = true;
  }
  if (!content.contains("s.dependency 'nitro'")) {
    content = content.replaceFirst('s.pod_target_xcconfig = {', "s.dependency 'nitro'\n  s.pod_target_xcconfig = {");
    modified = true;
  }
  // Ensure generated Swift bridges are included from their canonical location.
  // CocoaPods compiles source_files patterns directly — no copying to ios/Classes/ needed.
  if (!content.contains("lib/src/generated/swift")) {
    final before = content;
    // Try to append to an existing source_files line.
    content = content.replaceFirstMapped(
      RegExp(r"(s\.source_files\s*=\s*'[^']+')"),
      (m) => "${m.group(1)}, '../lib/src/generated/swift/**/*.swift'",
    );
    // If no source_files line existed, insert one before pod_target_xcconfig.
    if (content == before) {
      content = content.replaceFirst(
        's.pod_target_xcconfig = {',
        "s.source_files = 'Classes/**/*', '../lib/src/generated/swift/**/*.swift'\n  s.pod_target_xcconfig = {",
      );
    }
    modified = true;
  }
  if (modified) podspecFile.writeAsStringSync(content);
  createSharedHeaders(nitroNativePath, baseDir: baseDir);
  final classesDir = Directory(p.join(baseDir, 'ios', 'Classes'))..createSync(recursive: true);
  File(p.join(classesDir.path, 'dart_api_dl.c')).writeAsStringSync('#include "../../src/dart_api_dl.c"\n');
  syncBridgeFiles(baseDir);
  // Remove any stale .bridge.g.swift copies from ios/Classes/ — they are now
  // compiled directly from lib/src/generated/swift/ via the podspec source_files.
  _cleanStaleSwiftBridges(classesDir.path);

  // Link the main project source files.
  final cppInSrc = File(p.join(baseDir, 'src', '$pluginName.cpp'));
  if (cppInSrc.existsSync()) {
    cleanRedundantIncludes(cppInSrc);
    File(p.join(classesDir.path, '$pluginName.cpp')).writeAsStringSync('// Generated by nitrogen link — do not edit.\n#include "../../src/$pluginName.cpp"\n');
  }
  final cInSrc = File(p.join(baseDir, 'src', '$pluginName.c'));
  if (cInSrc.existsSync()) {
    cleanRedundantIncludes(cInSrc);
    File(p.join(classesDir.path, '$pluginName.c')).writeAsStringSync('#include "../../src/$pluginName.c"\n');
  }

  // Link C++ module implementation files for iOS.
  // On Android each module is a separate .so via CMake. On iOS everything is
  // compiled into one pod binary, so only AppleNativeImpl.cpp modules need
  // a Hybrid*.cpp forwarder in ios/Classes/.
  // Windows-only C++ modules must NOT get a forwarder here: the abstract base
  // has no Swift/iOS implementation and CocoaPods would fail with
  // "Variable type 'HybridXxxImpl' is an abstract class".
  if (moduleInfos != null) {
    // Discover specs for Apple-cpp filtering.
    final libDir = Directory(p.join(baseDir, 'lib'));
    final specFiles = libDir.existsSync() ? libDir.listSync(recursive: true).whereType<File>().where((f) => f.path.endsWith('.native.dart')).toList() : <File>[];
    final appleCppLibs = specFiles.where(isAppleCppModule).map((f) {
      final stem = p.basename(f.path).replaceAll(RegExp(r'\.native\.dart$'), '');
      return extractLibNameFromSpec(f) ?? stem;
    }).toSet();

    // Write forwarders only for Apple cpp modules.
    for (final m in moduleInfos.where((m) => m.isCpp)) {
      final className = _toPascalCase(m.lib);
      final forwarderFile = File(p.join(classesDir.path, 'Hybrid$className.cpp'));
      if (appleCppLibs.contains(m.lib)) {
        // Apple C++ module — ensure forwarder is present/up-to-date.
        final implSrc = File(p.join(baseDir, 'src', 'Hybrid$className.cpp'));
        if (implSrc.existsSync()) {
          forwarderFile.writeAsStringSync('// Generated by nitrogen link — do not edit.\n#include "../../src/Hybrid$className.cpp"\n');
        }
      } else {
        // Non-Apple C++ module (e.g. Windows-only) — remove any stale forwarder.
        if (forwarderFile.existsSync()) forwarderFile.deleteSync();
      }
    }
  }

  ensureIosPackageSwift(pluginName, baseDir: baseDir, moduleInfos: moduleInfos);
}