import fs from 'fs-extra';
import path from 'path';

import { TransformPipeline } from '.';

export function podspecTransforms(versionName: string): TransformPipeline {
  return {
    transforms: [
      // Common transforms
      {
        // Transforms some podspec fields by adding versionName at the beginning
        replace: /\.(name|header_dir|module_name)(\s*=\s*["'])([^"']+)(["'])/g,
        with: `.$1$2${versionName}$3$4`,
      },
      {
        // Prefixes dependencies listed in the podspecs
        replace: /(\.dependency\s+["'])(Yoga|React\-|ReactCommon|RCT|FB)(?!-Folly)([^"']*["'])/g,
        with: `$1${versionName}$2$3`,
      },
      {
        // Removes source conditional
        replace: /source\s*\=\s*\{[.\S\s]+?end/g,
        with: '',
      },
      {
        // Points spec source at correct directory
        replace: /(\.source\s*\=\s*)\S+\n/g,
        with: '$1{ :path => "." }\n',
      },

      // React-Core & ReactCommon
      {
        // Fixes header_subspecs for RCTBlobHeaders
        paths: 'React-Core.podspec',
        replace: /\{(RCTBlobManager),(RCTFileReaderModule)\}/g,
        with: `{${versionName}$1,${versionName}$2}`,
      },
      {
        // Prefixes conflicting AccessibilityResources
        paths: 'React-Core.podspec',
        replace: /"AccessibilityResources"/g,
        with: `"${versionName}AccessibilityResources"`,
      },
      {
        // Add custom modulemap for React-Core to generate correct submodules for swift integration
        // Learn more: `packages/expo-modules-autolinking/scripts/ios/cocoapods/sandbox.rb`
        paths: 'React-Core.podspec',
        replace: /(s.default_subspec\s+=.*$)/mg,
        with: `$1\n  s.module_map             = "${versionName}React-Core.modulemap"`,
      },
      {
        // Hide Hermes headers from public headers because clang modoules does not support c++
        // Learn more: `packages/expo-modules-autolinking/scripts/ios/cocoapods/sandbox.rb`
        paths: 'React-Core.podspec',
        replace: /(s.subspec\s+"Hermes".*$)/mg,
        with: '$1\n    ss.private_header_files = "ReactCommon/hermes/executor/*.h", "ReactCommon/hermes/inspector/*.h", "ReactCommon/hermes/inspector/chrome/*.h", "ReactCommon/hermes/inspector/detail/*.h"',
      },
      {
        // DEFINES_MODULE for swift integration
        // Learn more: `packages/expo-modules-autolinking/scripts/ios/cocoapods/sandbox.rb`
        paths: 'ReactCommon.podspec',
        replace: /("USE_HEADERMAP" => "YES",)/g,
        with: '$1 "DEFINES_MODULE" => "YES",',
      },
      {
        // Fixes HEADER_SEARCH_PATHS
        paths: ['React-Core.podspec', 'ReactCommon.podspec'],
        replace: /(Headers\/Private\/)(React-Core)/g,
        with: `$1${versionName}$2`,
      },

      // React-cxxreact
      {
        // Fixes excluding SampleCxxModule.* files
        paths: 'React-cxxreact.podspec',
        replace: /\.exclude_files(\s*=\s*["'])(SampleCxxModule\.\*)(["'])/g,
        with: `.exclude_files$1${versionName}$2$3`,
      },

      // Yoga
      {
        // Unprefixes inner directory for source_files
        paths: 'Yoga.podspec',
        replace: /\{(Yoga),(YGEnums),(YGMacros),(YGNode),(YGStyle),(YGValue)\}/g,
        with: `{${versionName}$1,${versionName}$2,${versionName}$3,${versionName}$4,${versionName}$5,${versionName}$6}`,
      },

      // FBReactNativeSpec
      {
        // Fixes HEADER_SEARCH_PATHS
        paths: 'FBReactNativeSpec.podspec',
        replace: /(\/Libraries\/)(FBReactNativeSpec)/g,
        with: `$1${versionName}$2`,
      },
      {
        // Disable codegen from build phase script
        paths: 'FBReactNativeSpec.podspec',
        replace: /(use_react_native_codegen!)/g,
        with: '# $1',
      },
    ],
  };
}

export async function generateModulemapAsync(podspecFile: string, versionName: string) {
    const basename = path.basename(podspecFile, '.podspec');
    if (basename === 'React-Core') {
      const modulemap = `\
module ${versionName}React {
  umbrella "../../Public/${versionName}React-Core/${versionName}React"

  export *
  module * { export * }
}`;
      const modulemapPath = path.join(path.dirname(podspecFile), `${versionName}React-Core.modulemap`);
      await fs.writeFile(modulemapPath, modulemap);
    }
}