import { describe, expect, it } from "vitest";
import {
  type IdentityCandidate,
  normalizeTitle,
  parseRelease,
  queryTitles,
  rankCandidates,
  resolveIdentity,
  scoreCandidate,
  stripSeasonSuffix,
  TRAD_TO_SIMP,
  toSimplified,
} from "../src/index.ts";

const movie = (over: Partial<IdentityCandidate> = {}): IdentityCandidate => ({
  provider: "tmdb",
  entityType: "movie",
  externalId: "872585",
  titles: ["Oppenheimer", "奥本海默"],
  year: 2023,
  aliases: [],
  ...over,
});

describe("标题归一化", () => {
  it("繁简 / 全半角 / 标点 / 大小写", () => {
    expect(toSimplified("葬送的芙莉蓮")).toBe("葬送的芙莉莲");
    expect(normalizeTitle("葬送的芙莉蓮")).toBe(normalizeTitle("葬送的芙莉莲"));
    expect(normalizeTitle("ＴＨＥ　ＬＡＳＴ　ＯＦ　ＵＳ")).toBe("thelastofus");
    expect(normalizeTitle("Spider-Man: No Way Home")).toBe("spidermannowayhome");
    expect(normalizeTitle("Tom & Jerry")).toBe("tomandjerry");
    expect(normalizeTitle("黑暗榮耀")).toBe("黑暗荣耀");
  });
  it("去季号/年份后缀", () => {
    expect(stripSeasonSuffix("庆余年 第二季")).toBe("庆余年");
    expect(stripSeasonSuffix("The Boys Season 4")).toBe("The Boys");
    expect(stripSeasonSuffix("Show S02")).toBe("Show");
    expect(stripSeasonSuffix("Title (2019)")).toBe("Title");
    expect(stripSeasonSuffix("第二季")).toBe("第二季");
    expect(normalizeTitle("庆余年 第二季")).toBe(normalizeTitle("慶餘年"));
  });
  it("映射表是一一对应的字符对", () => {
    expect(TRAD_TO_SIMP.size).toBeGreaterThan(500);
    for (const [k, v] of TRAD_TO_SIMP) {
      expect([...k].length).toBe(1);
      expect([...v].length).toBe(1);
    }
  });
  it("queryTitles 去重", () => {
    const p = parseRelease("奥本海默 Oppenheimer 2023 1080p");
    expect(queryTitles(p)).toEqual(["奥本海默", "oppenheimer"]);
  });
});

describe("候选打分(证据等级,无概率)", () => {
  const p = parseRelease("Oppenheimer.2023.2160p.UHD.BluRay.REMUX-FraMeSToR");
  it("标题精确 + 年份一致 → rule_confirmed", () => {
    const r = scoreCandidate(p, movie());
    expect(r.level).toBe("rule_confirmed");
    expect(r.titleMatch).toBe("exact");
    expect(r.yearMatch).toBe("exact");
    expect(Object.values(r).some((v) => typeof v === "number")).toBe(false);
  });
  it("年份容差 ±1 → multi_evidence;±2 → rejected", () => {
    expect(scoreCandidate(p, movie({ year: 2024 })).level).toBe("multi_evidence");
    expect(scoreCandidate(p, movie({ year: 2022 })).yearMatch).toBe("within_tolerance");
    expect(scoreCandidate(p, movie({ year: 2025 })).level).toBe("rejected");
    expect(scoreCandidate(p, movie({ year: 2025 }), { yearTolerance: 2 }).level).toBe("multi_evidence");
  });
  it("别名命中 → multi_evidence;部分包含 → needs_confirm;无关 → rejected", () => {
    expect(scoreCandidate(p, movie({ titles: ["X"], aliases: ["Oppenheimer"] })).level).toBe("multi_evidence");
    expect(scoreCandidate(p, movie({ titles: ["Oppenheimer Returns"] })).level).toBe("needs_confirm");
    expect(scoreCandidate(p, movie({ titles: ["Barbie"] })).level).toBe("rejected");
  });
  it("年份未知:电影需确认,剧集有季号且类型一致算多证据", () => {
    const noYear = parseRelease("Oppenheimer 1080p WEB-DL");
    expect(scoreCandidate(noYear, movie()).level).toBe("needs_confirm");
    const tv = parseRelease("奔跑吧 第十二季 20240426 第1期 1080p WEB-DL");
    const show: IdentityCandidate = {
      provider: "tmdb",
      entityType: "tv",
      externalId: "1",
      titles: ["奔跑吧"],
      year: 2017,
      aliases: [],
    };
    const r = scoreCandidate(tv, show);
    expect(r.yearMatch).toBe("unknown");
    expect(r.typeMatch).toBe("match");
    expect(r.level).toBe("multi_evidence");
    expect(scoreCandidate(tv, { ...show, entityType: "movie" }).level).toBe("needs_confirm");
  });
  it("剧集季年份:seasonYears 命中算 season_year;后续季无季年份信息不据此拒绝", () => {
    const s2 = parseRelease("The.Last.of.Us.S02.2025.1080p.WEB-DL");
    const show: IdentityCandidate = {
      provider: "tmdb",
      entityType: "tv",
      externalId: "100088",
      titles: ["The Last of Us"],
      year: 2023,
      aliases: [],
    };
    expect(scoreCandidate(s2, show).yearMatch).toBe("unknown");
    const withYears = scoreCandidate(s2, { ...show, seasonYears: [2023, 2025] });
    expect(withYears.yearMatch).toBe("season_year");
    expect(withYears.level).toBe("rule_confirmed");
    expect(scoreCandidate(s2, { ...show, seasonYears: [2023] }).level).toBe("rejected");
  });
  it("显式 ID 提升一级;标题不符但显式 ID 命中 → needs_confirm", () => {
    const e = parseRelease("[tmdbid=872585] Oppenheimer 2024 1080p");
    const r = scoreCandidate(e, movie());
    expect(r.evidence).toContain("explicit_id");
    expect(r.level).toBe("rule_confirmed");
    const e2 = parseRelease("[tmdbid=872585] Something Else 2023 1080p");
    expect(scoreCandidate(e2, movie()).level).toBe("needs_confirm");
    const local = movie({
      provider: "local",
      externalId: "uuid-1",
      linkedExternalIds: [{ provider: "tmdb", id: "872585" }],
    });
    expect(scoreCandidate(e2, local).evidence).toContain("explicit_id");
  });
});

describe("排序与判定", () => {
  const p = parseRelease("Oppenheimer.2023.1080p.BluRay.x264-CHD");
  it("本地实体同等级优先,等级 > 标题 > 年份", () => {
    const tmdb = movie();
    const local = movie({ provider: "local", externalId: "uuid-1", localEntityId: "uuid-1" });
    const weak = movie({ externalId: "9", titles: ["Oppenheimer X"] });
    const ranked = rankCandidates(p, [weak, tmdb, local]);
    expect(ranked.map((r) => r.candidate.externalId)).toEqual(["uuid-1", "872585", "9"]);
  });
  it("唯一强候选 → auto", () => {
    const res = resolveIdentity(p, [movie(), movie({ externalId: "2", titles: ["Barbie"] })]);
    expect(res.status).toBe("auto");
    expect(res.best?.candidate.externalId).toBe("872585");
  });
  it("同等级两个不同身份 → ambiguous;同一身份(本地映射)不算冲突", () => {
    const dup = resolveIdentity(p, [movie(), movie({ externalId: "999" })]);
    expect(dup.status).toBe("ambiguous");
    expect(dup.reason).toBe("multiple_candidates_same_level");
    const local = movie({
      provider: "local",
      externalId: "uuid-1",
      localEntityId: "uuid-1",
      linkedExternalIds: [{ provider: "tmdb", id: "872585" }],
    });
    expect(resolveIdentity(p, [movie(), local]).status).toBe("auto");
    expect(resolveIdentity(p, [local, movie()]).status).toBe("auto");
    expect(resolveIdentity(p, [local, { ...local, externalId: "x" }]).status).toBe("auto");
  });
  it("弱证据 → ambiguous;无候选 → no_match", () => {
    expect(resolveIdentity(p, [movie({ titles: ["Oppenheimer Returns"] })]).status).toBe("ambiguous");
    expect(resolveIdentity(p, []).status).toBe("no_match");
    expect(resolveIdentity(p, [movie({ titles: ["Barbie"] })]).status).toBe("no_match");
  });
});