/* eslint-disable @typescript-eslint/no-var-requires */
/**
 * Expo Config-Plugin — bindet das NEURLFilter-ExtensionKit-Target
 * (`RebreakURLFilterExtension`) beim Prebuild ins iOS-Projekt ein.
 *
 * Ersetzt das frühere NEFilter-Plugin. Erkenntnis aus Apples `SimpleURLFilter`-
 * Sample: das Target ist KEIN exotischer Produkttyp — es bleibt das klassische
 * `app_extension`. Die ExtensionKit-Natur kommt aus:
 *   1. der Info.plist (`EXAppExtensionAttributes` / `EXExtensionPointIdentifier`)
 *   2. der Embed-Phase „Embed Foundation Extensions" mit `dstSubfolderSpec = 16`
 *      (das klassische „Embed App Extensions" wäre 13).
 *
 * Was es macht:
 *   1) Haupt-App-Entitlements (url-filter-provider, family-controls, app-groups)
 *   2) kopiert `modules/rebreak-protection/ios/RebreakURLFilterExtension/` → `ios/`
 *   3) fügt das Xcode-Target `RebreakURLFilterExtension` hinzu
 *
 * Idempotent — kann beliebig oft via `expo prebuild` laufen.
 */

const fs = require('fs');
const path = require('path');

const {
  withEntitlementsPlist,
  withDangerousMod,
  withXcodeProject,
} = require('@expo/config-plugins');

const APP_GROUP = 'group.org.rebreak.app';
const TARGET_NAME = 'RebreakURLFilterExtension';
const EXT_BUNDLE_SUFFIX = 'URLFilterExtension'; // → org.rebreak.app.URLFilterExtension
const DEVELOPMENT_TEAM = '84BQ7MTFYK';
const MODULE_DIR = path.join(
  __dirname,
  '..',
  'modules',
  'rebreak-protection',
  'ios',
  TARGET_NAME,
);

// Swift-Quellen (Apple-Bloom vendored + unser Control-Provider).
const SWIFT_SOURCES = [
  'BloomFilter.swift',
  'Murmur3Hash.swift',
  'FNV1aHash.swift',
  'RebreakURLFilterControlProvider.swift',
];
// Bundle-Resources.
const RESOURCES = ['bloom_filter.plist'];

// ─── 1) Haupt-App-Entitlements ──────────────────────────────────────────────

function withMainAppEntitlements(config) {
  return withEntitlementsPlist(config, (cfg) => {
    // NEURLFilter-Entitlement (ersetzt das alte content-filter-provider).
    // Dev-Builds laufen ohne Apple-Freigabe; TestFlight/Store brauchen die
    // genehmigte Capability (Developer-Portal → Capability Requests).
    cfg.modResults['com.apple.developer.networking.networkextension'] = [
      'url-filter-provider',
    ];
    // Family Controls = Kern-Funktion, Apple-Distribution-Entitlement freigegeben
    // (v0.3.4) → DEFAULT AN. Nur ein explizites REBREAK_ENABLE_FAMILY_CONTROLS=0
    // schaltet es ab (Escape-Hatch). Muss identisch zu app.config.ts
    // `familyControlsEnabled` bleiben.
    if (process.env.REBREAK_ENABLE_FAMILY_CONTROLS !== '0') {
      cfg.modResults['com.apple.developer.family-controls'] = true;
    }
    const groups = cfg.modResults['com.apple.security.application-groups'] || [];
    if (!groups.includes(APP_GROUP)) {
      cfg.modResults['com.apple.security.application-groups'] = [...groups, APP_GROUP];
    }
    return cfg;
  });
}

// ─── 2) Extension-Sources ins ios/-Verzeichnis kopieren ─────────────────────

function withCopyExtensionSources(config) {
  return withDangerousMod(config, [
    'ios',
    async (cfg) => {
      const dest = path.join(cfg.modRequest.platformProjectRoot, TARGET_NAME);
      if (!fs.existsSync(MODULE_DIR)) {
        throw new Error(
          `[with-rebreak-protection-ios] Extension source dir missing: ${MODULE_DIR}`,
        );
      }
      if (!fs.existsSync(dest)) fs.mkdirSync(dest, { recursive: true });
      for (const file of fs.readdirSync(MODULE_DIR)) {
        fs.copyFileSync(path.join(MODULE_DIR, file), path.join(dest, file));
      }
      return cfg;
    },
  ]);
}

// ─── 3) Xcode-Target hinzufügen ──────────────────────────────────────────────

function withExtensionTarget(config) {
  return withXcodeProject(config, async (cfg) => {
    const proj = cfg.modResults;

    // Idempotenz: skip wenn Target schon angelegt.
    if (proj.pbxTargetByName(TARGET_NAME)) {
      return cfg;
    }

    const mainBundleId = cfg.ios?.bundleIdentifier;
    if (!mainBundleId) {
      throw new Error('[with-rebreak-protection-ios] ios.bundleIdentifier fehlt in app.config');
    }
    const extBundleId = `${mainBundleId}.${EXT_BUNDLE_SUFFIX}`;

    // ── Target anlegen (Produkttyp app_extension — wie Apples SimpleURLFilter) ──
    const target = proj.addTarget(TARGET_NAME, 'app_extension', TARGET_NAME, extBundleId);

    // ── Build-Phasen ──
    proj.addBuildPhase(SWIFT_SOURCES, 'PBXSourcesBuildPhase', 'Sources', target.uuid);
    proj.addBuildPhase(RESOURCES, 'PBXResourcesBuildPhase', 'Resources', target.uuid);
    proj.addBuildPhase(
      ['NetworkExtension.framework'],
      'PBXFrameworksBuildPhase',
      'Frameworks',
      target.uuid,
    );

    // ── PBXGroup für die Extension-Dateien ──
    const pbxGroup = proj.addPbxGroup(
      [...SWIFT_SOURCES, ...RESOURCES, 'Info.plist', `${TARGET_NAME}.entitlements`],
      TARGET_NAME,
      TARGET_NAME,
    );
    const groups = proj.hash.project.objects.PBXGroup;
    Object.keys(groups).forEach((key) => {
      if (
        groups[key].name === 'CustomTemplate' ||
        (groups[key].name === undefined && groups[key].path === undefined)
      ) {
        proj.addToPbxGroup(pbxGroup.uuid, key);
      }
    });

    // ── Build-Settings auf der Target-Configuration ──
    const configurations = proj.pbxXCBuildConfigurationSection();
    Object.keys(configurations)
      .filter((k) => typeof configurations[k] === 'object')
      .forEach((k) => {
        const buildSettingsObj = configurations[k].buildSettings;
        if (
          buildSettingsObj &&
          buildSettingsObj.PRODUCT_NAME &&
          buildSettingsObj.PRODUCT_NAME.replace(/"/g, '') === TARGET_NAME
        ) {
          buildSettingsObj.INFOPLIST_FILE = `"${TARGET_NAME}/Info.plist"`;
          buildSettingsObj.CODE_SIGN_ENTITLEMENTS = `"${TARGET_NAME}/${TARGET_NAME}.entitlements"`;
          // NEURLFilter ist iOS 26+. Die Extension lädt nur dort — höheres
          // Deployment-Target als die Haupt-App (iOS 16+) ist korrekt.
          buildSettingsObj.IPHONEOS_DEPLOYMENT_TARGET = '26.0';
          buildSettingsObj.SWIFT_VERSION = '5.0';
          buildSettingsObj.TARGETED_DEVICE_FAMILY = '"1,2"';
          buildSettingsObj.CODE_SIGN_STYLE = 'Automatic';
          // EAS managed credentials setzen DEVELOPMENT_TEAM nur auf der Main-App
          // → Extension braucht expliziten Team-Wert.
          buildSettingsObj.DEVELOPMENT_TEAM = DEVELOPMENT_TEAM;
        }
      });

    // ── Embed-Phase auf ExtensionKit umstellen ──
    // proj.addTarget() hat bereits eine „Copy Files"-PBXCopyFilesBuildPhase
    // (dstSubfolderSpec 13 = PlugIns/) im Haupt-Target angelegt, die unsere
    // .appex einbettet. iOS' Installer (MIPluginKitBundle) behandelt aber
    // ALLES in PlugIns/ als klassische PluginKit-Extension und verlangt ein
    // NSExtension-Dict im Info.plist — das ExtensionKit-Extensions NICHT haben
    // ("AppexBundleMissingNSExtensionDict", MIInstallerError 39). ExtensionKit-
    // Extensions MÜSSEN nach Extensions/. Also die bestehende Phase umbiegen:
    // dstSubfolderSpec 16 + dstPath $(EXTENSIONS_FOLDER_PATH) — exakt wie
    // Apples SimpleURLFilter.xcodeproj. KEINE zweite Phase anlegen (sonst wird
    // die .appex doppelt eingebettet).
    const mainTargetUuid = proj.getFirstTarget().uuid;
    const copyFilesPhases = proj.hash.project.objects.PBXCopyFilesBuildPhase || {};
    let embedFixed = false;
    Object.keys(copyFilesPhases).forEach((key) => {
      const phase = copyFilesPhases[key];
      if (typeof phase !== 'object') return;
      const embedsOurAppex = (phase.files || []).some(
        (f) => typeof f?.comment === 'string' && f.comment.includes(`${TARGET_NAME}.appex`),
      );
      if (!embedsOurAppex) return;
      phase.name = '"Embed Foundation Extensions"';
      phase.dstSubfolderSpec = 16;
      phase.dstPath = '"$(EXTENSIONS_FOLDER_PATH)"';
      embedFixed = true;
    });
    if (!embedFixed) {
      throw new Error(
        '[with-rebreak-protection-ios] Embed-CopyFiles-Phase für die .appex nicht gefunden',
      );
    }

    // ── Target-Dependency: Haupt-App baut die Extension vorher ──
    proj.addTargetDependency(mainTargetUuid, [target.uuid]);

    return cfg;
  });
}

// ─── Composition ────────────────────────────────────────────────────────────

module.exports = function withRebreakProtectionIos(config) {
  config = withMainAppEntitlements(config);
  config = withCopyExtensionSources(config);
  config = withExtensionTarget(config);
  return config;
};