console.log("[HiAnime-TV] source.js loaded");

class HiAnime {
  constructor() {
    console.log("[HiAnime-TV] constructor()");
    this.type = "anime-board";
    this.version = "1.1";
    this.baseUrl = "https://hianime.to";
  }

  getSettings() {
    console.log("[HiAnime-TV] getSettings()");
    return {
      episodeServers: ["HD-1", "HD-2", "HD-3", "HD-4"],
      supportsDub: true
    };
  }

  safeString(str) {
    return (typeof str === "string" ? str : "");
  }

  _decodeHtml(s) {
    return this.safeString(s)
      .replace(/&/g, "&")
      .replace(/"/g, '"')
      .replace(/'/g, "'")
      .replace(/'/g, "'")
      .replace(/&lt;/g, "<")
      .replace(/&gt;/g, ">")
      .replace(/&#(\d+);?/g, function (m, d) {
        var n = parseInt(d, 10);
        return (typeof n === "number" && !isNaN(n)) ? String.fromCharCode(n) : m;
      });
  }

  _escapeRe(s) {
    return this.safeString(s).replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
  }

  _fetch(url, opts) {
    var o = opts || {};
    var headers = {};

    headers["User-Agent"] =
      "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36";
    headers["Accept"] = "text/html,application/json;q=0.9,*/*;q=0.8";
    headers["Referer"] = this.baseUrl + "/";
    headers["Accept-Language"] = "en-US,en;q=0.9";

    if (o.headers && typeof o.headers === "object") {
      for (var k in o.headers) {
        if (Object.prototype.hasOwnProperty.call(o.headers, k)) {
          headers[k] = o.headers[k];
        }
      }
    }

    var method = o.method || "GET";

    var init = { method: method, headers: headers };
    if (method !== "GET" && method !== "HEAD") {
      var body = (o.body === undefined || o.body === null) ? "" : String(o.body);
      init.body = body;
    }

    console.log("[HiAnime-TV] fetch", method, url, "headers=", Object.keys(headers).length);
    var r = fetch(url, init); 
    console.log("[HiAnime-TV] fetchResp status=", r.status, "ok=", r.ok);
    return r;
  }

  _isBlockedHtml(html) {
    var h = this.safeString(html).toLowerCase();
    return (
      h.indexOf("cloudflare") !== -1 ||
      h.indexOf("just a moment") !== -1 ||
      h.indexOf("cf-challenge") !== -1 ||
      h.indexOf("attention required") !== -1
    );
  }

  search(query) {
    console.log("[HiAnime-TV] search() raw=", query);

    try {
      var q = query;

      if (typeof q === "string") {
        try {
          q = JSON.parse(q);
        } catch (e) {
          q = { query: query };
        }
      }

      q = q || {};
      var queryText = this.safeString(q.query || q.title);
      var start = (q.media && q.media.startDate) ? q.media.startDate : {};
      var year = start.year || "";
      var month = start.month || "";
      var dub = !!q.dub;

      console.log("[HiAnime-TV] search() parsed queryText=", queryText, "year=", year, "month=", month, "dub=", dub);

      if (!queryText) return [];

      var url =
        this.baseUrl +
        "/search?keyword=" +
        encodeURIComponent(queryText) +
        "&sort=default";
      if (year) url += "&sy=" + year;
      if (month) url += "&sm=" + month;

      console.log("[HiAnime-TV] search() url=", url);

      var html = this._fetch(url).text(); // sync in host
      console.log("[HiAnime-TV] search() htmlLen=", (html || "").length);

      if (this._isBlockedHtml(html)) {
        throw new Error("HiAnime blocked the request (Cloudflare/bot protection).");
      }

      var cardRegex =
        /<a[^>]*href="\/watch\/([^"]+)"[^>]*\btitle="([^"]+)"[^>]*\bdata-id="(\d+)"[^>]*>|<a[^>]*href="\/watch\/([^"]+)"[^>]*\bdata-id="(\d+)"[^>]*\btitle="([^"]+)"[^>]*>/gi;

      var out = [];
      var match;

      while ((match = cardRegex.exec(html)) !== null) {
        var pagePath = match[1] || match[4] || "";
        var titleRaw = match[2] || match[6] || "";
        var id = match[3] || match[5] || "";

        if (!pagePath || !id) continue;

        var title = this._decodeHtml(titleRaw);

        var image = null;
        try {
          var imageRegex = new RegExp(
            "<a[^>]*href=\"/watch/" +
              this._escapeRe(pagePath) +
              "\"[\\s\\S]*?<img[^>]+(?:data-src|src)=\"([^\"]+)\"",
            "i"
          );
          var im = html.match(imageRegex);
          image = im ? im[1] : null;
        } catch (e2) {}

        out.push({
          id: String(id) + "/" + (dub ? "dub" : "sub"),
          title: title,
          image: image,
          url: this.baseUrl + "/watch/" + pagePath,
          subOrDub: dub ? "dub" : "sub"
        });
      }

      console.log("[HiAnime-TV] search() returning=", out.length, "first=", out[0] ? out[0].title : "none");
      return out;
    } catch (e) {
      console.error("[HiAnime-TV] search() ERROR", String(e), e && e.stack ? e.stack : "");
      throw e;
    }
  }

  findEpisodes(animeId) {
    console.log("[HiAnime-TV] findEpisodes() animeId=", animeId);
    try {
      var raw = animeId;
      if (typeof raw !== "string") raw = JSON.stringify(raw);

      var id = "";
      var subOrDub = "sub";

      if (raw.indexOf("/") !== -1) {
        var parts = raw.split("/");
        id = parts[0];
        subOrDub = parts[1] || "sub";
      } else {
        try {
          var parsed = JSON.parse(raw);
          var v = parsed.id || parsed.animeId || raw;
          if (String(v).indexOf("/") !== -1) {
            var parts2 = String(v).split("/");
            id = parts2[0];
            subOrDub = parts2[1] || (parsed.subOrDub || "sub");
          } else {
            id = String(v);
            subOrDub = parsed.subOrDub || "sub";
          }
        } catch (e) {
          id = raw;
        }
      }

      id = String(id || "").trim();
      if (!id) throw new Error("Missing anime id");

      console.log("[HiAnime-TV] findEpisodes() parsed id=", id, "subOrDub=", subOrDub);

      var url = this.baseUrl + "/ajax/v2/episode/list/" + id;
      var res = this._fetch(url, { headers: { "X-Requested-With": "XMLHttpRequest" } });
      var json = res.json(); 
      var html = this.safeString(json.html);

      console.log("[HiAnime-TV] findEpisodes() status=", res.status, "ok=", res.ok, "htmlLen=", html.length);

      var episodes = [];
      var regex =
        /<a[^>]*class="[^"]*\bep-item\b[^"]*"[^>]*data-number="(\d+)"[^>]*data-id="(\d+)"[^>]*href="([^"]+)"[\s\S]*?<div class="ep-name[^"]*"[^>]*title="([^"]+)"/g;

      var match;
      while ((match = regex.exec(html)) !== null) {
        episodes.push({
          id: match[2] + "/" + subOrDub,
          number: parseInt(match[1], 10),
          url: this.baseUrl + match[3],
          title: this._decodeHtml(match[4]),
          subOrDub: subOrDub
        });
      }

      console.log("[HiAnime-TV] findEpisodes() returning=", episodes.length, "firstEp=", episodes[0] ? episodes[0].number : "none");
      return episodes;
    } catch (e) {
      console.error("[HiAnime-TV] findEpisodes() ERROR", String(e), e && e.stack ? e.stack : "");
      throw e;
    }
  }

  findEpisodeServer(episode, _server) {
    console.log("[HiAnime-TV] findEpisodeServer() episode=", episode, "server=", _server);
    try {
      var ep = episode;

      if (typeof ep === "string") {
        try { ep = JSON.parse(ep); } catch (e) {}
      }

      var episodeId = "";
      var subOrDub = "sub";

      if (typeof ep === "string") {
        var raw = ep;
        if (raw.indexOf("/") !== -1) {
          var parts = raw.split("/");
          episodeId = parts[0];
          subOrDub = parts[1] || "sub";
        } else {
          episodeId = raw;
        }
      } else if (ep && typeof ep === "object") {
        var rawId = ep.id || ep.episodeId || "";
        if (String(rawId).indexOf("/") !== -1) {
          var parts2 = String(rawId).split("/");
          episodeId = parts2[0];
          subOrDub = parts2[1] || (ep.subOrDub || "sub");
        } else {
          episodeId = String(rawId);
          subOrDub = ep.subOrDub || "sub";
        }
      }

      episodeId = String(episodeId || "").trim();
      if (!episodeId) throw new Error("Missing episode id");

      var serverName = (_server && _server !== "default") ? String(_server) : "HD-1";
      console.log("[HiAnime-TV] parsed episodeId=", episodeId, "subOrDub=", subOrDub, "serverName=", serverName);

      if (serverName === "HD-1" || serverName === "HD-2" || serverName === "HD-3") {
        var serversUrl = this.baseUrl + "/ajax/v2/episode/servers?episodeId=" + encodeURIComponent(episodeId);
        console.log("[HiAnime-TV] serversUrl=", serversUrl);

        var serverJson = this._fetch(serversUrl, { headers: { "X-Requested-With": "XMLHttpRequest" } }).json();
        var serverHtml = this.safeString(serverJson.html);
        console.log("[HiAnime-TV] serverHtmlLen=", serverHtml.length);

        var regex = new RegExp(
          "<div[^>]*class=\"item server-item\"[^>]*data-type=\"" +
            this._escapeRe(subOrDub) +
            "\"[^>]*data-id=\"(\\d+)\"[^>]*>[\\s\\S]*?<a[^>]*>[\\s\\S]*?" +
            this._escapeRe(serverName) +
            "[\\s\\S]*?<\\/a>",
          "i"
        );

        var m = regex.exec(serverHtml);
        if (!m) throw new Error("Server \"" + serverName + "\" (" + subOrDub + ") not found");

        var serverId = m[1];
        console.log("[HiAnime-TV] serverId=", serverId);

        var sourcesUrl = this.baseUrl + "/ajax/v2/episode/sources?id=" + encodeURIComponent(serverId);
        console.log("[HiAnime-TV] sourcesUrl=", sourcesUrl);

        var sourcesJson = this._fetch(sourcesUrl, { headers: { "X-Requested-With": "XMLHttpRequest" } }).json();
        console.log("[HiAnime-TV] sourcesJson has link=", !!sourcesJson.link);

        var decryptData = null;
        var requiredHeaders = {};

        try {
          decryptData = this.extractMegaCloud(sourcesJson.link, true);
          if (decryptData && decryptData.headersProvided) requiredHeaders = decryptData.headersProvided;
          console.log("[HiAnime-TV] extractMegaCloud ok sources=", (decryptData && decryptData.sources ? decryptData.sources.length : 0));
        } catch (err) {
          console.warn("[HiAnime-TV] Primary decrypter failed:", String(err));
        }

        if (!decryptData) {
          console.warn("[HiAnime-TV] Trying fallback decrypt...");
          var fallbackUrl =
            "https://ac-api.ofchaos.com/api/anime/embed/convert/v2?embedUrl=" +
            encodeURIComponent(sourcesJson.link);
          console.log("[HiAnime-TV] fallbackUrl=", fallbackUrl);

          var fallbackRes = this._fetch(fallbackUrl);
          decryptData = fallbackRes.json();

          requiredHeaders = {
            "Referer": "https://megacloud.club/",
            "Origin": "https://megacloud.club",
            "User-Agent":
              "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36",
            "X-Requested-With": "XMLHttpRequest"
          };

          console.log("[HiAnime-TV] fallback decrypt sources=", (decryptData && decryptData.sources ? decryptData.sources.length : 0));
        }

        var sourcesArr = (decryptData && decryptData.sources) ? decryptData.sources : [];
        var streamSource = null;

        for (var i = 0; i < sourcesArr.length; i++) {
          var s = sourcesArr[i];
          if (s && s.type === "hls" && s.file) { streamSource = s; break; }
        }
        if (!streamSource) {
          for (var j = 0; j < sourcesArr.length; j++) {
            var s2 = sourcesArr[j];
            if (s2 && s2.type === "mp4" && s2.file) { streamSource = s2; break; }
          }
        }

        if (!streamSource || !streamSource.file) throw new Error("No valid stream file found");

        var subtitles = [];
        var tracks = decryptData.tracks || [];
        for (var k = 0; k < tracks.length; k++) {
          var track = tracks[k];
          if (track && track.kind === "captions" && track.file) {
            subtitles.push({
              id: "sub-" + k,
              language: track.label || "Unknown",
              url: track.file,
              isDefault: !!track.default
            });
          }
        }

        console.log("[HiAnime-TV] FINAL stream file=", streamSource.file, "type=", streamSource.type, "subs=", subtitles.length);

        return {
          server: serverName,
          headers: requiredHeaders,
          videoSources: [{
            url: streamSource.file,
            type: streamSource.type === "hls" ? "m3u8" : "mp4",
            quality: "auto",
            subtitles: subtitles
          }]
        };
      }

      if (serverName === "HD-4") {
        console.warn("[HiAnime-TV] HD-4 not implemented");
        return null;
      }

      console.warn("[HiAnime-TV] Unsupported server=", serverName);
      return null;
    } catch (e) {
      console.error("[HiAnime-TV] findEpisodeServer() ERROR", String(e), e && e.stack ? e.stack : "");
      throw e;
    }
  }

  extractMegaCloud(embedUrl, returnHeaders) {
    console.log("[HiAnime-TV] extractMegaCloud() embedUrl=", embedUrl, "returnHeaders=", returnHeaders);

    var url = new URL(embedUrl);
    var baseDomain = url.protocol + "//" + url.host + "/";

    var headers = {
      "Accept": "*/*",
      "X-Requested-With": "XMLHttpRequest",
      "Referer": baseDomain,
      "Origin": url.protocol + "//" + url.host,
      "User-Agent":
        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36"
    };

    var r = this._fetch(embedUrl, { headers: headers });
    var html = r.text();

    console.log("[HiAnime-TV] extractMegaCloud() embed status=", r.status, "ok=", r.ok, "htmlLen=", (html || "").length);

    var fileIdMatch = html.match(/<title>\s*File\s+#([a-zA-Z0-9]+)\s*-/i);
    if (!fileIdMatch) throw new Error("file_id not found in embed page");
    var fileId = fileIdMatch[1];

    var nonce = null;
    var match48 = html.match(/\b[a-zA-Z0-9]{48}\b/);
    if (match48) {
      nonce = match48[0];
    } else {
      var regex16 = /["']([A-Za-z0-9]{16})["']/g;
      var matches = [];
      var m;
      while ((m = regex16.exec(html)) !== null) matches.push(m[1]);
      if (matches.length >= 3) nonce = matches[0] + matches[1] + matches[2];
    }
    if (!nonce) throw new Error("nonce not found");

    var sourcesUrl = baseDomain + "embed-2/v3/e-1/getSources?id=" + encodeURIComponent(fileId) + "&_k=" + encodeURIComponent(nonce);
    console.log("[HiAnime-TV] extractMegaCloud() sourcesUrl=", sourcesUrl);

    var sr = this._fetch(sourcesUrl, { headers: headers });
    var sourcesJson = sr.json();

    console.log("[HiAnime-TV] extractMegaCloud() sources status=", sr.status, "ok=", sr.ok,
      "sources=", (sourcesJson.sources ? sourcesJson.sources.length : 0),
      "tracks=", (sourcesJson.tracks ? sourcesJson.tracks.length : 0)
    );

    return {
      sources: sourcesJson.sources || [],
      tracks: sourcesJson.tracks || [],
      intro: sourcesJson.intro || null,
      outro: sourcesJson.outro || null,
      server: sourcesJson.server || null,
      headersProvided: returnHeaders ? headers : undefined
    };
  }
}

module.exports = HiAnime;
console.log("[HiAnime-TV] module.exports set");