const {
  withAppBuildGradle,
  withProjectBuildGradle,
  withDangerousMod,
  withAndroidManifest,
} = require('@expo/config-plugins');
const fs = require('fs');
const path = require('path');

const withHuaweiPush = (config, options = {}) => {
  const { jpushVersion = '5.8.0' } = options;

  config = withProjectBuildGradle(config, (config) => {
    const contents = config.modResults.contents;

    if (!contents.includes('developer.huawei.com/repo')) {
      config.modResults.contents = contents.replace(
        /(repositories\s*\{)/g,
        (match) => {
          return match + `\n            maven { url 'https://developer.huawei.com/repo/' }`;
        }
      );
    }

    return config;
  });

  config = withProjectBuildGradle(config, (config) => {
    const contents = config.modResults.contents;

    if (!contents.includes('com.huawei.agconnect:agcp')) {
      if (contents.includes('buildscript')) {
        const depsPattern = /(buildscript\s*\{[\s\S]*?dependencies\s*\{)/;
        if (depsPattern.test(contents)) {
          config.modResults.contents = contents.replace(
            depsPattern,
            `$1\n        classpath 'com.huawei.agconnect:agcp:1.9.1.301'`
          );
        }
      }
    }

    return config;
  });

  config = withAppBuildGradle(config, (config) => {
    const contents = config.modResults.contents;

    if (!contents.includes('com.huawei.agconnect')) {
      const applyPluginPattern = /apply plugin:\s*['"]com\.google\.gms\.google-services['"]/;
      if (applyPluginPattern.test(contents)) {
        config.modResults.contents = contents.replace(
          applyPluginPattern,
          `apply plugin: 'com.google.gms.google-services'\napply plugin: 'com.huawei.agconnect'`
        );
      } else {
        const lastApplyPlugin = /apply plugin:[^\n]*(?:\n)/g;
        const matches = contents.match(lastApplyPlugin);
        if (matches && matches.length > 0) {
          const lastMatch = matches[matches.length - 1];
          const lastIndex = contents.lastIndexOf(lastMatch);
          config.modResults.contents =
            contents.slice(0, lastIndex + lastMatch.length) +
            "apply plugin: 'com.huawei.agconnect'\n" +
            contents.slice(lastIndex + lastMatch.length);
        } else {
          config.modResults.contents = contents + "\napply plugin: 'com.huawei.agconnect'\n";
        }
      }
    }

    if (!contents.includes('cn.jiguang.sdk.plugin:huawei')) {
      const depsPattern = /dependencies\s*\{/;
      if (depsPattern.test(config.modResults.contents)) {
        config.modResults.contents = config.modResults.contents.replace(
          depsPattern,
          `dependencies {\n    implementation 'cn.jiguang.sdk.plugin:huawei:${jpushVersion}'`
        );
      }
    }

    return config;
  });

  config = withDangerousMod(config, [
    'android',
    async (config) => {
      const appDir = path.join(config.modRequest.platformProjectRoot, 'app');
      const srcFile = path.join(config.modRequest.projectRoot, 'plugins', 'agconnect-services.json');
      const destFile = path.join(appDir, 'agconnect-services.json');

      if (fs.existsSync(srcFile)) {
        fs.copyFileSync(srcFile, destFile);
        console.log('[withHuaweiPush] copied agconnect-services.json to android/app/');
      } else {
        console.warn('[withHuaweiPush] agconnect-services.json not found at project root');
      }

      return config;
    },
  ]);

  config = withAndroidManifest(config, (config) => {
    return config;
  });

  return config;
};

module.exports = withHuaweiPush;