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

// 荣耀厂商推送通道的 Expo config plugin.
//
// 客户端职责（依据极光官方文档 https://docs.jiguang.cn/jpush/client/Android/android_3rd_guide）：
//   1) 添加 cn.jiguang.sdk.plugin:honor 依赖
//   2) 注入 manifestPlaceholders: HONOR_APPID
//   3) 添加荣耀 Maven 仓库 https://developer.hihonor.com/repo (v5.9.0+ 必需)
//   4) 添加 Proguard 规则 (com.hihonor.push.** 保留 + 5 条 -keepattributes)
//
// 实现说明：app/build.gradle 改动用 withDangerousMod 直接读写磁盘文件。
// 原因：Expo SDK 56+ 的 withAppBuildGradle hook 链中，第二个以后的 plugin 写回
// modResults.contents 会被静默忽略，导致多个 vendor plugin 只能写入第一个的修改。
// 仓库（settings.gradle / build.gradle）改动用 withProjectBuildGradle / withSettingsGradle
// 没有这个问题。
const withHonorPush = (config, options = {}) => {
  const {
    jpushVersion = '6.1.0',
    appId = '104562917',
  } = options;

  const honorRepoUrl = 'https://developer.hihonor.com/repo';

  // 1. settings.gradle: 添加荣耀 Maven 仓库
  config = withSettingsGradle(config, (config) => {
    let contents = config.modResults.contents;

    if (!contents.includes('developer.hihonor.com/repo')) {
      const repoLine = `    maven { url '${honorRepoUrl}' }`;
      const hasRepositoriesInPM = /pluginManagement\s*\{[\s\S]*?repositories\s*\{/.test(contents);

      if (hasRepositoriesInPM) {
        config.modResults.contents = contents.replace(
          /(pluginManagement\s*\{[\s\S]*?repositories\s*\{)/,
          `$1\n      ${repoLine}`
        );
      } else if (contents.includes('pluginManagement')) {
        config.modResults.contents = contents.replace(
          /(pluginManagement\s*\{)/,
          `$1\n  repositories {\n    gradlePluginPortal()\n    google()\n    mavenCentral()\n    ${repoLine}\n  }`
        );
      } else {
        config.modResults.contents =
          `pluginManagement {\n  repositories {\n    ${repoLine}\n  }\n}\n\n` +
          config.modResults.contents;
      }
    }

    // Gradle 9+ layout
    if (
      !config.modResults.contents.match(
        /dependencyResolutionManagement[\s\S]*developer\.hihonor\.com\/repo/
      )
    ) {
      const depMgmtPattern = /dependencyResolutionManagement\s*\{[\s\S]*?repositories\s*\{/;
      if (depMgmtPattern.test(config.modResults.contents)) {
        config.modResults.contents = config.modResults.contents.replace(
          depMgmtPattern,
          `$&\n        maven { url '${honorRepoUrl}' }`
        );
      }
    }

    return config;
  });

  // 2. 根 build.gradle: 添加荣耀 Maven 仓库到 buildscript.repositories
  config = withProjectBuildGradle(config, (config) => {
    let contents = config.modResults.contents;

    if (!contents.includes('developer.hihonor.com/repo')) {
      const bsRepoPattern = /(buildscript\s*\{[\s\S]*?repositories\s*\{)/;
      if (bsRepoPattern.test(contents)) {
        contents = contents.replace(
          bsRepoPattern,
          `$1\n          maven { url '${honorRepoUrl}' }`
        );
      }
    }

    config.modResults.contents = contents;
    return config;
  });

  // 3. app/build.gradle: 注入 AAR 依赖 + manifestPlaceholders (用 withDangerousMod 直接读文件)
  config = withDangerousMod(config, [
    'android',
    async (config) => {
      const appBuildGradlePath = path.join(
        config.modRequest.platformProjectRoot,
        'app',
        'build.gradle'
      );
      const proguardFilePath = path.join(
        config.modRequest.platformProjectRoot,
        'app',
        'proguard-rules.pro'
      );

      // --- 3a. 处理 build.gradle ---
      if (fs.existsSync(appBuildGradlePath)) {
        let gradle = fs.readFileSync(appBuildGradlePath, 'utf-8');
        let changed = false;

        // 注入 cn.jiguang.sdk.plugin:honor 依赖
        if (!gradle.includes('cn.jiguang.sdk.plugin:honor')) {
          const depsPattern = /dependencies\s*\{/;
          if (depsPattern.test(gradle)) {
            gradle = gradle.replace(
              depsPattern,
              `dependencies {\n    implementation 'cn.jiguang.sdk.plugin:honor:${jpushVersion}'`
            );
            changed = true;
          }
        }

        // 注入 manifestPlaceholders: HONOR_APPID
        const manifestPlaceholderRegex = /manifestPlaceholders\s*=\s*\[([\s\S]*?)\]/;
        const match = gradle.match(manifestPlaceholderRegex);

        const requiredPlaceholders = {
          HONOR_APPID: appId,
        };

        if (match) {
          const existingBlock = match[1];
          const existingEntries = {};
          const entryRegex = /(\w+)\s*:\s*"([^"]*)"/g;
          let entryMatch;
          while ((entryMatch = entryRegex.exec(existingBlock)) !== null) {
            existingEntries[entryMatch[1]] = entryMatch[2];
          }

          let placeholdersChanged = false;
          for (const [key, value] of Object.entries(requiredPlaceholders)) {
            if (existingEntries[key] !== value) {
              existingEntries[key] = value;
              placeholdersChanged = true;
            }
          }

          if (placeholdersChanged) {
            const entriesStr = Object.entries(existingEntries)
              .map(([k, v]) => `${k}: "${v}"`)
              .join(',\n            ');
            const newBlock = `\n        manifestPlaceholders = [\n            ${entriesStr}\n        ]`;
            gradle = gradle.replace(manifestPlaceholderRegex, newBlock.trim());
            changed = true;
          }
        } else if (gradle.includes('REACT_NATIVE_RELEASE_LEVEL')) {
          // 没有 manifestPlaceholders block 时新建
          const entriesStr = Object.entries(requiredPlaceholders)
            .map(([k, v]) => `${k}: "${v}"`)
            .join(',\n            ');
          const block = `\n        manifestPlaceholders = [\n            ${entriesStr}\n        ]\n`;
          const lines = gradle.split('\n');
          for (let i = 0; i < lines.length; i++) {
            if (lines[i].includes('REACT_NATIVE_RELEASE_LEVEL')) {
              lines.splice(i + 1, 0, block);
              break;
            }
          }
          gradle = lines.join('\n');
          changed = true;
        }

        if (changed) {
          fs.writeFileSync(appBuildGradlePath, gradle);
          console.log('[withHonorPush] updated app/build.gradle (AAR + manifestPlaceholders)');
        }
      }

      // --- 3b. 处理 proguard-rules.pro ---
      if (fs.existsSync(proguardFilePath)) {
        let proguard = fs.readFileSync(proguardFilePath, 'utf-8');
        if (!proguard.includes('-keep class com.hihonor.push.**')) {
          const honorRules = `
# JPush Honor vendor channel — keep rules (https://docs.jiguang.cn/jpush/client/Android/android_3rd_guide)
-ignorewarnings
-keepattributes *Annotation*
-keepattributes Exceptions
-keepattributes InnerClasses
-keepattributes Signature
-keepattributes SourceFile,LineNumberTable
-keep class com.hihonor.push.**{*;}
`;
          fs.writeFileSync(proguardFilePath, proguard + honorRules);
          console.log('[withHonorPush] appended Honor Proguard rules to proguard-rules.pro');
        }
      }

      return config;
    },
  ]);

  return config;
};

module.exports = withHonorPush;