// ============================================================================
//  my_clash 覆写脚本 — 把任意订阅改造成「自用版」结构
// ============================================================================
//
//  作用
//    对任意 mihomo 订阅配置做整体覆写，使其与本仓库 profiles/my_clash.yaml 一致：
//      · 20 个策略组（Smart + 6 地区组 + 12 应用组）
//      · 20 份规则集（17 份 MRS + 3 份 yaml）+ 26 条规则
//      · DNS 双层广告拦截（fake-ip-filter + nameserver-policy rcode://success）
//      · 订阅内的节点直接成为组内成员 —— 不再需要 Airport 订阅组
//
//  与静态模板的唯一区别
//    静态模板用 `use: [Airport]` 引入订阅；本脚本改用 `include-all-proxies: true`，
//    让订阅里已有的 `proxies` 直接入组。二者等价，但后者无需额外订阅槽位。
//
//  用法（Mihomo Party / Mihomo Purity 等支持 JS 覆写的客户端）
//    1) 把本文件放到可访问的 URL（或本地导入）；
//    2) 在客户端的「覆写」中导入，再绑到目标订阅上。
//
//  注意
//    · 本脚本会**整体替换** proxy-groups / rule-providers / rules / dns，
//      订阅自带的同名配置将被丢弃（节点 proxies 保留）；
//    · port / mixed-port 等入站端口不覆盖，交给客户端决定。
// ============================================================================

function main(config) {
  // ── 0. 兜底：确保关键字段存在 ──────────────────────────────────────────
  if (!config.proxies) config.proxies = [];

  // IPv6 显式关闭（顶层开关）：与 dns.ipv6 配套，双栈站点一律回落 IPv4，
  // 避免本机真实 IPv6 绕过 TUN 出网导致出口 IP 与节点不符。
  config.ipv6 = false;
  if (!config["proxy-groups"]) config["proxy-groups"] = [];

  // 规则集整体重建：订阅自带的 rule-providers 一律丢弃，
  // 只保留本脚本定义的 20 份（避免残留无用 provider 与命名冲突）。
  config["rule-providers"] = {};

  // 节点筛选（官方 groupbase.go 的 GetProxies 中依次应用）：
  //   filter          —— 正向保留，作用于 include-all-proxies
  //   exclude-filter  —— 反向排除，作用于 include-all-proxies
  //   exclude-type    —— 按节点类型排除，仅作用于 proxies 字段
  // 这里用 filter 排掉「直连」类，用 exclude-filter 排掉机场常见的
  // 「剩余流量 / 套餐到期 / 官网」等信息节点（它们不可用，会污染测速池）。
  const NODIRECT = "^((?!(直连|DIRECT)).)*$";
  const NOJUNK = "剩余|流量|到期|过期|官网|订阅|重置|续费|Traffic|Expire|GB";

  // 倍率解析：从节点名里抓出「低倍率」数字（0.01 / 0.1 / 0.5 …）。
  //  判据沿用姊妹仓 Self-Configuration 的 policy-priority 正则：必须以 `0.` 开头、
  //  末位非零、且前面不能紧跟数字或小数点 —— 这样「0.1倍 / 0.1倍率 / 0.1x / 0.5」都能抓到，
  //  而「香港 01」「1.5GB」「剩余流量」不会误伤。抓不到就返回 null（视为正常倍率）。
  function rateOf(name) {
    var m = String(name || "").match(/(?:^|[^\d.])(0\.\d*[1-9])/);
    return m ? parseFloat(m[1]) : null;
  }

  // 按倍率从小到大排出节点顺序（倍率低的优先用；无倍率的排最后）。
  //  同倍率内保持订阅原顺序，不做额外打乱 —— 顺序即 fallback 的优先级。
  function sortedByRate(names) {
    return names.slice().sort(function (a, b) {
      var ra = rateOf(a), rb = rateOf(b);
      if (ra === null && rb === null) return 0;
      if (ra === null) return 1;
      if (rb === null) return -1;
      if (ra !== rb) return ra - rb;
      return 0;
    });
  }

  // 通用健康检查参数
  const HC_URL = "https://www.gstatic.com/generate_204";
  const HC_INT = 300;

  // 图标基址（本仓库自带 icons/，与姊妹仓 Self-Configuration 同源）
  const ICON = "https://raw.githubusercontent.com/RiverFlowsInUUU/Clash/main/icons/";
  // 本仓 raw 基址（自托管清单 rules/ 用）
  const RAW = "https://raw.githubusercontent.com/RiverFlowsInUUU/Clash/main/";

  // 节点来源开关：
  //   include-all-proxies 引入内联 proxies（订阅转换后的常见形态）；
  //   若订阅额外带了 proxy-providers，则 include-all-proxies 不会包含它们，
  //   此时改用 include-all（= proxies + providers）避免节点成孤儿。
  const HAS_PROVIDERS =
    config["proxy-providers"] && Object.keys(config["proxy-providers"]).length > 0;
  const ALL_KEY = HAS_PROVIDERS ? "include-all" : "include-all-proxies";
  const allNodes = {};
  allNodes[ALL_KEY] = true;

  // 可用节点名（套用与策略组相同的过滤口径：排掉直连类与机场信息节点）
  var usable = (config.proxies || [])
    .map(function (p) { return p && p.name; })
    .filter(function (n) {
      if (!n) return false;
      if (!new RegExp(NODIRECT).test(n)) return false;
      if (new RegExp(NOJUNK).test(n)) return false;
      return true;
    });
  // 按倍率升序 —— Smart 组的成员顺序即 fallback 的优先级
  var smartOrder = sortedByRate(usable);

  // ── 1. 策略组 ─────────────────────────────────────────────────────────
  // 说明：
  //   · 用 include-all-proxies 引入订阅的全部节点（等价于静态模板的 use: [Airport]）
  //   · 组间引用走 proxies 字段；节点由 include-all-proxies 注入
  //   · filter 同时作用于 include-all-proxies，故地区组直接靠 filter 筛选
  config["proxy-groups"] = [
    {
      name: "Proxy",
      type: "select",
      // 对齐 SC 的 Proxy：Smart + 6 个地区组（Other Regions 收尾，接住落单节点）
      proxies: [
        "Smart",
        "Hong Kong", "Taiwan", "Japan", "Singapore", "United States",
        "Other Regions",
      ],
      icon: ICON + "Proxy.png",
    },
    {
      name: "Smart",
      type: "fallback",
      // 成员顺序 = 倍率优先级：0.01 → 0.1 → 0.5 → 正常倍率。
      // 顺序由脚本按节点名动态算出（见 sortedByRate），不写死正则分档。
      proxies: smartOrder.length ? smartOrder : ["DIRECT"],
      url: HC_URL,
      interval: HC_INT,
      icon: ICON + "Auto.png",
    },

    {
      name: "ChatGPT",
      type: "select",
      // 对齐 SC 的 ChatGPT：美国 → 台湾 → 日本 → 新加坡
      proxies: ["United States", "Taiwan", "Japan", "Singapore"],
      icon: ICON + "openai.png",
    },
    {
      name: "Gemini",
      type: "select",
      // 对齐 SC 的 Gemini：美国 → 台湾 → 日本 → 新加坡
      proxies: ["United States", "Taiwan", "Japan", "Singapore"],
      icon: ICON + "gemini-color.png",
    },
    {
      name: "Claude",
      type: "select",
      // 依次回落：台湾 → 日本 → 新加坡 → 美国
      proxies: ["Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "claude-color.png",
    },

    {
      name: "AI",
      type: "select",
      // 对齐 SC 的 AI：Smart 打头，其后 台湾 → 日本 → 新加坡 → 美国
      proxies: ["Smart", "Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "grok.png",
    },
    {
      name: "YouTube",
      type: "select",
      proxies: ["Smart", "Hong Kong", "Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "YouTube.png",
    },

    {
      name: "Emby",
      type: "select",
      proxies: ["Smart", "Hong Kong", "Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "Emby.png",
    },

    {
      name: "Google",
      type: "select",
      proxies: ["Gemini", "Smart", "Hong Kong", "Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "Google.png",
    },

    {
      name: "Telegram",
      type: "select",
      proxies: ["Smart", "Hong Kong", "Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "Telegram.png",
    },

    {
      name: "YouTube Music",
      type: "select",
      proxies: ["United States", "Hong Kong", "Taiwan", "Japan", "Singapore"],
      icon: ICON + "YouTubeMusic.png",
    },

    {
      name: "Spotify",
      type: "select",
      proxies: ["United States", "Hong Kong", "Taiwan", "Japan", "Singapore"],
      icon: ICON + "Spotify.png",
    },

    {
      name: "Twitter",
      type: "select",
      proxies: ["Smart", "Hong Kong", "Taiwan", "Japan", "Singapore", "United States"],
      icon: ICON + "Twitter.png",
    },

    {
      name: "Microsoft",
      type: "select",
      proxies: ["DIRECT", "Proxy"],
      icon: ICON + "Microsoft.png",
    },
    {
      name: "Apple Update",
      type: "select",
      proxies: ["DIRECT", "REJECT"],
      icon: ICON + "Apple.png",
    },

    {
      name: "AD",
      type: "select",
      // 对齐 SC 的 AD：REJECT / DIRECT 二选一（不设 PASS ——
      // PASS 语义为「绕过代理直连」，与二选一的拦截口径不符，易误操作）
      proxies: ["REJECT", "DIRECT"],
      icon: ICON + "AdBlock.png",
    },

    {
      name: "Hong Kong",
      type: "url-test",
      ...allNodes,
      filter: "(?=.*(港|HK|(?i)Hong))^((?!(台|日|韩|新|美)).)*$",
      url: HC_URL,
      interval: HC_INT,
      tolerance: 50,
      icon: ICON + "HongKong.png",
    },

    {
      name: "Taiwan",
      type: "url-test",
      ...allNodes,
      filter: "(?=.*(台|TW|(?i)Taiwan|Tai))^((?!(港|韩|新|美|日)).)*$",
      url: HC_URL,
      interval: HC_INT,
      tolerance: 50,
      icon: ICON + "Taiwan.png",
    },

    {
      name: "Japan",
      type: "url-test",
      ...allNodes,
      filter: "(?=.*(日|JP|(?i)Japan))^((?!(港|台|韩|新|美)).)*$",
      url: HC_URL,
      interval: HC_INT,
      tolerance: 50,
      icon: ICON + "Japan.png",
    },

    {
      name: "Singapore",
      type: "url-test",
      ...allNodes,
      filter: "(?=.*(新加坡|坡|狮城|SG|Singapore))^((?!(台|日|韩|深|美)).)*$",
      url: HC_URL,
      interval: HC_INT,
      tolerance: 50,
      icon: ICON + "Singapore.png",
    },

    {
      name: "United States",
      type: "url-test",
      ...allNodes,
      filter: "(?=.*(美|US|(?i)States|America))^((?!(港|台|韩|新|日)).)*$",
      url: HC_URL,
      interval: HC_INT,
      tolerance: 50,
      icon: ICON + "UnitedStates.png",
    },

    {
      name: "Other Regions",
      type: "url-test",
      ...allNodes,
      filter: "^(?!(.*(港|HK|Hong|台|TW|Taiwan|Tai|日|JP|Japan|新加坡|坡|狮城|SG|Singapore|美|US|States|America|洛杉矶|硅谷|西雅图|纽约|东京|大阪|LAX|SJC|SFO|SEA|ORD|JFK|DFW|IAD|PHX|ATL|BOS|MIA|NRT|HND|KIX|FUK|TPE|SIN)))(?!(.*(剩余|流量|到期|过期|官网|订阅|重置|续费|Traffic|Expire|GB|倍率|测试|有效|禁止|邮箱|客服|地址|网站|群组))).+$",
      url: HC_URL,
      interval: HC_INT,
      tolerance: 50,
      icon: ICON + "WorldMap.png",
    },
  ];

  // ── 2. 规则集（全部 MRS）────────────────────────────────────────────────
  const JS = "https://cdn.jsdelivr.net/gh/MetaCubeX/meta-rules-dat@meta/geo";
  const rp = config["rule-providers"];

  // 15 个 geosite 域分类
  [
    "apple-update", "spotify", "private", "anthropic", "category-ai-chat-!cn",
    "github", "youtube", "google", "microsoft", "apple-cn", "telegram", "twitter",
    "cn", "openai", "google-gemini",
  ].forEach(function (c) {
    rp[c] = {
      type: "http",
      behavior: "domain",
      format: "mrs",
      url: JS + "/geosite/" + c + ".mrs",
      path: "./rule_provider/" + c + ".mrs",
      interval: 86400,
    };
  });

  // 4 个 geoip 分类（IP 兜底用）
  ["private", "google", "telegram", "cn"].forEach(function (c) {
    rp["geoip-" + c] = {
      type: "http",
      behavior: "ipcidr",
      format: "mrs",
      url: JS + "/geoip/" + c + ".mrs",
      path: "./rule_provider/geoip-" + c + ".mrs",
      interval: 86400,
    };
  });

  // 自定义清单（上游没有对应 geosite 分类）
  rp["AWAvenue-Ads"] = {
    type: "http",
    behavior: "domain",
    format: "mrs",
    url: "https://raw.githubusercontent.com/TG-Twilight/AWAvenue-Ads-Rule/main/Filters/AWAvenue-Ads-Rule-Clash.mrs",
    path: "./rule_provider/AWAvenue-Ads-Rule-Clash.mrs",
    interval: 86400,
  };
  rp["Jinx-CN"] = {
    type: "http",
    behavior: "classical",
    format: "yaml",
    url: "https://raw.githubusercontent.com/RiverFlowsInUUU/Jinx/main/mihomo-direct.yaml",
    path: "./rule_provider/Jinx-CN.yaml",
    interval: 86400,
  };
  rp["Jinx-Ads"] = {
    type: "http",
    behavior: "classical",
    format: "yaml",
    url: "https://raw.githubusercontent.com/RiverFlowsInUUU/Jinx/main/mihomo-ads.yaml",
    path: "./rule_provider/Jinx-Ads.yaml",
    interval: 86400,
  };

  // 本仓自托管清单（上游无对应集，或属自用枚举）—— 与姊妹仓 Self-Configuration
  // 同构，但**自托管不跨项目引用**，改内容只需动本仓 rules/ 目录。
  rp["emby"] = {
    type: "http",
    behavior: "classical",
    format: "yaml",
    url: RAW + "rules/emby.yaml",
    path: "./rule_provider/emby.yaml",
    interval: 86400,
  };

  // AI 伴生域整合集：补 MetaCubeX category-ai-chat-!cn 漏掉的 93 条
  // （认证 / 遥测 / 风控类基础设施域），与姊妹仓 rules/AI.list 同源。
  rp["AI_Domains"] = {
    type: "http",
    behavior: "classical",
    format: "yaml",
    url: RAW + "rules/AI_Domains.yaml",
    path: "./rule_provider/AI_Domains.yaml",
    interval: 86400,
  };
  rp["apple-system"] = {
    type: "http",
    behavior: "classical",
    format: "yaml",
    url: RAW + "rules/apple_system.yaml",
    path: "./rule_provider/apple_system.yaml",
    interval: 86400,
  };

  // ── 3. 分流规则 ────────────────────────────────────────────────────────
  config.rules = [
    "RULE-SET,Jinx-CN,DIRECT",
    "RULE-SET,Jinx-Ads,AD",
    "RULE-SET,AWAvenue-Ads,AD",
    "RULE-SET,apple-update,Apple Update",
    "RULE-SET,apple-system,DIRECT",
    "RULE-SET,geoip-private,DIRECT,no-resolve",
    "RULE-SET,private,DIRECT",
    "RULE-SET,openai,ChatGPT",
    "RULE-SET,google-gemini,Gemini",
    "RULE-SET,anthropic,Claude",
    "RULE-SET,category-ai-chat-!cn,AI",
    "RULE-SET,AI_Domains,AI",
    // YouTube Music：bm7 的 Clash 版清单也只有 music.youtube.com 一条，
    // 与硬编码等效且无增益，故保留内联写法（避免一次无谓的远程拉取）
    "DOMAIN-SUFFIX,music.youtube.com,YouTube Music",
    "RULE-SET,github,Proxy",
    "RULE-SET,youtube,YouTube",
    "RULE-SET,emby,Emby",
    "RULE-SET,google,Google",
    "RULE-SET,spotify,Spotify",
    "RULE-SET,twitter,Twitter",
    "RULE-SET,microsoft,Microsoft",
    "RULE-SET,apple-cn,DIRECT",
    "RULE-SET,telegram,Telegram",
    "RULE-SET,geoip-google,Google",
    "RULE-SET,geoip-telegram,Telegram",
    "RULE-SET,cn,DIRECT",
    "RULE-SET,geoip-cn,DIRECT",
    "MATCH,Proxy",
  ];

  // ── 4. DNS（含双层广告拦截）────────────────────────────────────────────
  // 关键：广告域名必须同时出现在
  //   ① fake-ip-filter  —— 否则 withFakeIP 对 A/AAAA 直接返回假 IP，
  //                        请求永远到不了 nameserver-policy；
  //   ② nameserver-policy = rcode://success —— 返回空回答，DNS 层拦截。
  // 且 nameserver-policy 中广告项必须写在 rule-set:private,cn 之前。
  config.dns = {
    enable: true,
    // IPv6 显式关闭：不向客户端返回 AAAA 记录，双栈站点自动回落 IPv4。
    // 否则本机真实 IPv6 会绕过 TUN 直接出网（站点测到的出口 IP 与节点不符）。
    // 与姊妹仓 Self-Configuration（Surge / Egern 双内核同为 ipv6 = false）对齐。
    ipv6: false,
    "enhanced-mode": "fake-ip",
    "fake-ip-range": "198.18.0.1/16",
    "respect-rules": true,
    "use-hosts": true,
    "use-system-hosts": false,
    "prefer-h3": false,

    "default-nameserver": ["223.5.5.5", "119.29.29.29"],

    "direct-nameserver": [
      "https://doh.18bit.cn/dns-query",
      "https://dns.alidns.com/dns-query",
    ],
    "proxy-server-nameserver": [
      "https://doh.18bit.cn/dns-query",
      "https://dns.alidns.com/dns-query",
    ],

    nameserver: [
      "https://dns.cloudflare.com/dns-query",
      "https://dns.google/dns-query",
    ],
    fallback: [
      "https://dns.cloudflare.com/dns-query",
      "https://dns.google/dns-query",
    ],
    "fallback-filter": { geoip: true },

    "nameserver-policy": {
      "rule-set:AWAvenue-Ads": "rcode://success",
      "rule-set:Jinx-Ads": "rcode://success",
      "rule-set:private,cn": [
        "https://doh.18bit.cn/dns-query",
        "https://dns.alidns.com/dns-query",
      ],
    },

    "fake-ip-filter": [
      "*.lan",
      "*.local",
      "*.localdomain",
      "*.home.arpa",
      "+.msftconnecttest.com",
      "+.msftncsi.com",
      "localhost.ptlogin2.qq.com",
      "+.srv.nintendo.net",
      "+.stun.playstation.net",
      "+.xboxlive.com",
      "stun.*",
      "time.*.com",
      "ntp.*.com",
      "+.pool.ntp.org",
      "+.market.xiaomi.com",
      "rule-set:AWAvenue-Ads",
      "rule-set:Jinx-Ads",
    ],
  };

  return config;
}