/**
 * SPDX-License-Identifier: GPL-3.0-only
 * 移植自 MoviePilot(https://github.com/jxxghp/MoviePilot,GPLv3),本文件按 GPLv3 条款提供。
 * @mp-source app/modules/indexer/parser/gazelle.py @ e6820a8
 *
 * Gazelle 站点用户数据解析器(MP `GazelleSiteUserInfo`)。
 * 函数对照:`_parse_logged_in` → `_parseLoggedIn`、`_parse_user_base_info` → `_parseUserBaseInfo`、
 * `_parse_site_page` → `_parseSitePage`(空)、`_parse_user_detail_info` → `_parseUserDetailInfo`、
 * `_parse_user_torrent_seeding_info` → `_parseUserTorrentSeedingInfo`、`_parse_user_traffic_info`(空)、
 * `_parse_message_unread_links` / `_parse_message_content`(不支持)。XPath 与正则逐字保留。
 */
import { type NextPage, SiteParserBase } from "./base.ts";
import { normalizeDatetime, parseFloatMp, parseIntMp, reSearch } from "./common.ts";
import { hasChildElements, parseHtml } from "./dom.ts";
import { round3 } from "./nexus-php.ts";
import { SiteSchema, type SiteSchemaValue } from "./types.ts";

export class GazelleSiteUserInfo extends SiteParserBase {
  static override schema: SiteSchemaValue | null = SiteSchema.Gazelle;

  /** 兼容不展示退出入口的站点首页 */
  protected override _parseLoggedIn(htmlText: unknown): boolean | Promise<boolean> {
    const html = parseHtml(String(htmlText ?? ""));
    if (hasChildElements(html) && html.nodes('//a[contains(@href, "user.php?id=")]').length) return true;
    return super._parseLoggedIn(htmlText);
  }

  protected _parseUserBaseInfo(htmlText: string): void {
    const html = parseHtml(this._prepareHtmlText(htmlText));
    if (!html) return;
    let tmps = html.nodes('//a[contains(@href, "user.php?id=") or contains(@href, "user?id=")]');
    if (tmps.length) {
      const m = reSearch(/user(?:\.php)?\?id=(\d+)/, tmps[0]!.attr("href"));
      if (m?.[0].trim()) {
        this.userid = m[1]!;
        this._torrentSeedingPage = `torrents.php?type=seeding&userid=${this.userid}`;
        this._userDetailPage = `user.php?id=${this.userid}`;
        // lxml `el.text`:首个子节点为文本时取之
        const first = tmps[0]!.node.firstChild;
        this.username = first && first.nodeType === 3 ? (first.nodeValue ?? "").trim() : null;
      }
    }

    let vals = html.strings('//*[@id="header-uploaded-value"]/@data-value');
    if (vals.length) this.upload = this.numFilesize(vals[0]);
    else {
      vals = html.strings('//li[@id="stats_seeding"]/span/text()');
      if (vals.length) this.upload = this.numFilesize(vals[0]);
    }
    vals = html.strings('//*[@id="header-downloaded-value"]/@data-value');
    if (vals.length) this.download = this.numFilesize(vals[0]);
    else {
      vals = html.strings('//li[@id="stats_leeching"]/span/text()');
      if (vals.length) this.download = this.numFilesize(vals[0]);
    }
    this.ratio = this.download <= 0.0 ? 0.0 : round3(this.upload / this.download);

    vals = html.strings('//a[contains(@href, "bonus")]/@data-tooltip');
    if (vals.length) {
      const m = reSearch(/([\d,.]+)/, vals[0]);
      if (m?.[1]?.trim()) this.bonus = parseFloatMp(m[1]);
    } else {
      tmps = html.nodes('//a[contains(@href, "bonus")]');
      if (tmps.length) {
        const m = reSearch(/([\d,.]+)/, tmps[0]!.text());
        if (m?.[1]?.trim()) this.bonus = parseFloatMp(m[1]);
      }
    }
  }

  protected _parseSitePage(_htmlText: string): void {}

  protected _parseUserDetailInfo(htmlText: string): void {
    const html = parseHtml(htmlText);
    if (!hasChildElements(html)) return;
    // 用户等级
    let levels = html.strings('//*[@id="class-value"]/@data-value');
    if (levels.length) this.userLevel = levels[0]!.trim();
    else {
      levels = html.strings('//li[contains(text(), "用户等级")]/text()');
      if (levels.length) {
        const part = levels[0]!.split(":")[1];
        if (part === undefined) throw new Error("IndexError: list index out of range");
        this.userLevel = part.trim();
      }
    }
    // 加入日期
    let joinAt = html.strings('//*[@id="join-date-value"]/@data-value');
    if (joinAt.length) this.joinAt = normalizeDatetime(joinAt[0]!.trim()) ?? null;
    else {
      joinAt = html.strings(
        '//div[contains(@class, "box_userinfo_stats")]//li[contains(text(), "加入时间")]/span/text()',
      );
      if (joinAt.length) this.joinAt = normalizeDatetime(joinAt[0]!.trim()) ?? null;
    }
    // 兼容以文本形式展示上传/下载的站点(如 JPopsuki)
    if (!this.upload) {
      const up = html.nodes('//li[starts-with(normalize-space(text()), "Uploaded:")]');
      if (up.length) {
        const m = reSearch(/([\d.,]+\s*[GMKT]?i?B)/i, up[0]!.text());
        if (m) this.upload = this.numFilesize(m[1]);
      }
    }
    if (!this.download) {
      const down = html.nodes('//li[starts-with(normalize-space(text()), "Downloaded:")]');
      if (down.length) {
        const m = reSearch(/([\d.,]+\s*[GMKT]?i?B)/i, down[0]!.text());
        if (m) this.download = this.numFilesize(m[1]);
      }
    }
    if (!this.ratio && this.upload && this.download) this.ratio = round3(this.upload / this.download);
  }

  protected _parseUserTorrentSeedingInfo(htmlText: string, multiPage = false): NextPage {
    const html = parseHtml(htmlText);
    if (!hasChildElements(html)) return null;
    let sizeCol = 3;
    const headCells = html.nodes('//table[contains(@id, "torrent")]//tr[1]/td');
    if (headCells.length) sizeCol = headCells.length - 3;
    const seedersCol = sizeCol + 2;

    let pageSeeding = 0;
    let pageSeedingSize = 0;
    const pageSeedingInfo: Array<[number, number]> = [];
    const semanticRows = html.nodes(
      '//table[contains(@id, "torrent")]//tr[contains(concat(" ", normalize-space(@class), " "), " TableTorrent-rowTitle ")]',
    );
    if (semanticRows.length) {
      // GPW 等现代 Gazelle 页面以语义 class 标记列,逐行按 class 配对读取
      for (const row of semanticRows) {
        const sizeCells = row.nodes(
          './td[contains(concat(" ", normalize-space(@class), " "), " TableTorrent-cellStatSize ")]',
        );
        const seederCells = row.nodes(
          './td[contains(concat(" ", normalize-space(@class), " "), " TableTorrent-cellStatSeeders ")]',
        );
        if (!sizeCells.length || !seederCells.length) continue;
        const size = this.numFilesize(sizeCells[0]!.text().trim());
        const seeders = parseIntMp(seederCells[0]!.text().trim());
        pageSeeding += 1;
        pageSeedingSize += size;
        pageSeedingInfo.push([seeders, size]);
      }
    } else {
      const sizes = html.nodes(`//table[contains(@id, "torrent")]//tr[position()>1]/td[${sizeCol}]`);
      const seeders = html.strings(`//table[contains(@id, "torrent")]//tr[position()>1]/td[${seedersCol}]/text()`);
      if (sizes.length && seeders.length) {
        pageSeeding = sizes.length;
        for (let i = 0; i < sizes.length; i++) {
          const size = this.numFilesize(sizes[i]!.text().trim());
          pageSeedingSize += size;
          pageSeedingInfo.push([parseIntMp(seeders[i]), size]);
        }
      }
    }
    if (multiPage) {
      this.seeding += pageSeeding;
      this.seedingSize += pageSeedingSize;
      this.seedingInfo.push(...pageSeedingInfo);
    } else {
      if (!this.seeding) this.seeding = pageSeeding;
      if (!this.seedingSize) this.seedingSize = pageSeedingSize;
      if (!this.seedingInfo.length) this.seedingInfo = pageSeedingInfo;
    }
    const next = html.strings(
      '//a[contains(.//text(), "Next") or contains(.//text(), "下一页") or contains(@title, "下一页") or contains(@title, "Next")]/@href',
    );
    return next.length ? next[next.length - 1]!.trim() : null;
  }

  protected _parseUserTrafficInfo(_htmlText: string): void {}

  protected _parseMessageUnreadLinks(_htmlText: string, _msgLinks: string[]): NextPage {
    return null;
  }

  protected _parseMessageContent(_htmlText: string): [string | null, string | null, string | null] {
    return [null, null, null];
  }
}