const { 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 到 settings.gradle 和根 build.gradle
//      关键: 必须同时加到 settings.gradle 的 dependencyResolutionManagement 块（CI build 走这条路径），
//            和根 build.gradle 的 buildscript+allprojects（本地 build 兜底）。
//   4) 添加 Proguard 规则 (com.hihonor.push.** 保留 + 5 条 -keepattributes)
//
// 实现说明：所有文件改动统一用 withDangerousMod 直接读写磁盘。
// 原因：Expo SDK 56+ 的 withSettingsGradle / withProjectBuildGradle / withAppBuildGradle hook 链中，
//       第二个以后的 plugin 写回 modResults.contents 会被静默忽略。withDangerousMod 走文件系统串行执行，
//       多 vendor plugin 共存可靠。
const withHonorPush = (config, options = {}) => {
  const {
    jpushVersion = '6.1.0',
    appId = '104562917',
  } = options;

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

  config = withDangerousMod(config, [
    'android',
    async (config) => {
      const settingsGradlePath = path.join(
        config.modRequest.platformProjectRoot,
        'settings.gradle'
      );
      const rootBuildGradlePath = path.join(
        config.modRequest.platformProjectRoot,
        'build.gradle'
      );
      const appBuildGradlePath = path.join(
        config.modRequest.platformProjectRoot,
        'app',
        'build.gradle'
      );
      const proguardFilePath = path.join(
        config.modRequest.platformProjectRoot,
        'app',
        'proguard-rules.pro'
      );

      // --- 1. settings.gradle: pluginManagement + dependencyResolutionManagement ---
      if (fs.existsSync(settingsGradlePath)) {
        let settings = fs.readFileSync(settingsGradlePath, 'utf-8');
        let settingsChanged = false;
        const repoLine = `    maven { url '${honorRepoUrl}' }`;

        // pluginManagement.repositories
        if (!settings.match(/pluginManagement\s*\{[\s\S]*?developer\.hihonor\.com\/repo/)) {
          const hasRepositoriesInPM = /pluginManagement\s*\{[\s\S]*?repositories\s*\{/.test(settings);
          if (hasRepositoriesInPM) {
            settings = settings.replace(
              /(pluginManagement\s*\{[\s\S]*?repositories\s*\{)/,
              `$1\n      ${repoLine}`
            );
            settingsChanged = true;
          } else if (settings.includes('pluginManagement')) {
            settings = settings.replace(
              /(pluginManagement\s*\{)/,
              `$1\n  repositories {\n    gradlePluginPortal()\n    google()\n    mavenCentral()\n    ${repoLine}\n  }`
            );
            settingsChanged = true;
          } else {
            settings =
              `pluginManagement {\n  repositories {\n    ${repoLine}\n  }\n}\n\n` + settings;
            settingsChanged = true;
          }
        }

        // dependencyResolutionManagement (Gradle 7+, takes precedence over allprojects in CI)
        if (!settings.match(/dependencyResolutionManagement[\s\S]*developer\.hihonor\.com\/repo/)) {
          const depMgmtPattern = /dependencyResolutionManagement\s*\{[\s\S]*?repositories\s*\{/;
          if (depMgmtPattern.test(settings)) {
            settings = settings.replace(
              depMgmtPattern,
              `$&\n        maven { url '${honorRepoUrl}' }`
            );
            settingsChanged = true;
          } else {
            // Block doesn't exist — fallback: create with Huawei + Honor + standard repos.
            const block = `\ndependencyResolutionManagement {\n  repositories {\n    maven { url 'https://developer.huawei.com/repo/' }\n    maven { url '${honorRepoUrl}' }\n    google()\n    mavenCentral()\n    maven { url 'https://www.jitpack.io' }\n  }\n}\n`;
            const pluginsBlockEnd = /(\nplugins\s*\{[\s\S]*?\n\})/;
            if (pluginsBlockEnd.test(settings)) {
              settings = settings.replace(pluginsBlockEnd, `$1\n${block}`);
            } else {
              settings = settings + block;
            }
            settingsChanged = true;
          }
        }

        if (settingsChanged) {
          fs.writeFileSync(settingsGradlePath, settings);
          console.log('[withHonorPush] updated settings.gradle (pluginManagement + dependencyResolutionManagement)');
        }
      }

      // --- 2. 根 build.gradle: buildscript + allprojects repositories ---
      if (fs.existsSync(rootBuildGradlePath)) {
        let gradle = fs.readFileSync(rootBuildGradlePath, 'utf-8');
        let changed = false;
        const repoLine = `  maven { url '${honorRepoUrl}' }`;

        if (!gradle.match(/buildscript\s*\{[\s\S]*?developer\.hihonor\.com\/repo/)) {
          const bsRepoPattern = /(buildscript\s*\{[\s\S]*?repositories\s*\{)/;
          if (bsRepoPattern.test(gradle)) {
            gradle = gradle.replace(bsRepoPattern, `$1\n${repoLine}`);
            changed = true;
          }
        }

        if (!gradle.match(/allprojects\s*\{[\s\S]*?developer\.hihonor\.com\/repo/)) {
          const allProjectsPattern = /(allprojects\s*\{[\s\S]*?repositories\s*\{)/;
          if (allProjectsPattern.test(gradle)) {
            gradle = gradle.replace(allProjectsPattern, `$1\n${repoLine}`);
            changed = true;
          } else {
            const allProjectsBlock = `\nallprojects {\n  repositories {${repoLine}\n  }\n}\n`;
            gradle = gradle + allProjectsBlock;
            changed = true;
          }
        }

        if (changed) {
          fs.writeFileSync(rootBuildGradlePath, gradle);
          console.log('[withHonorPush] updated root build.gradle (buildscript + allprojects repos)');
        }
      }

      // --- 3. app/build.gradle: AAR 依赖 + manifestPlaceholders ---
      if (fs.existsSync(appBuildGradlePath)) {
        let gradle = fs.readFileSync(appBuildGradlePath, 'utf-8');
        let changed = false;

        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;
          }
        }

        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            ${entriesStr}\n        ]`;
            gradle = gradle.replace(manifestPlaceholderRegex, newBlock.trim());
            changed = true;
          }
        } else if (gradle.includes('REACT_NATIVE_RELEASE_LEVEL')) {
          const entriesStr = Object.entries(requiredPlaceholders)
            .map(([k, v]) => `${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)');
        }
      }

      // --- 4. 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;