/**
 * ID-3:站点列表 / 详情页给出的外部 ID(trustedIds)作为强证据。
 * 差分组:packages/domain/test/differential/identity/site-ids-*.json(MP search/result.py `_match_source`,
 * 由 gen-site-ids-mp.py 生成)。MP 只要种子 IMDb 与作品一致就判命中;我们年份冲突 / 类型冲突时只作候选(登记的偏离)。
 */
import { readFileSync } from "node:fs";
import { describe, expect, it } from "vitest";
import { type IdentityCandidate, parseRelease, resolveIdentity, scoreCandidate } from "../src/index.ts";

const DIR = new URL("./differential/identity/", import.meta.url);
const read = <T>(name: string): T => JSON.parse(readFileSync(new URL(name, DIR), "utf8")) as T;

interface Sample {
  id: string;
  note: string;
  torrent: { title: string; subtitle?: string; imdbId?: string };
  work: { type: "movie" | "tv"; tmdbId: number; title: string; originalTitle?: string; year: number; imdbId?: string };
  expectOurs: "auto" | "ambiguous" | "no_match";
}

const samples = read<{ samples: Sample[] }>("site-ids-samples.json").samples;
const mp = read<{ results: Record<string, { match: string | null }> }>("site-ids-mp.json").results;
const deviations = read<{ deviations: Record<string, { kind: string; note: string }> }>(
  "site-ids-deviations.json",
).deviations;

const candidateOf = (w: Sample["work"]): IdentityCandidate => ({
  provider: "tmdb",
  entityType: w.type,
  externalId: String(w.tmdbId),
  titles: [...new Set([w.title, ...(w.originalTitle ? [w.originalTitle] : [])])],
  year: w.year,
  aliases: [],
  ...(w.imdbId ? { linkedExternalIds: [{ provider: "imdb", id: w.imdbId }] } : {}),
});

const ours = (s: Sample) => {
  const p = parseRelease(s.torrent.title, s.torrent.subtitle ? { subtitle: s.torrent.subtitle } : {});
  const trustedIds = s.torrent.imdbId ? [{ provider: "imdb", id: s.torrent.imdbId }] : [];
  return resolveIdentity(p, [candidateOf(s.work)], { trustedIds });
};

describe("差分:站点外部 ID(MP _match_source)", () => {
  it("样本与 MP 输出一一对应", () => {
    expect(samples.length).toBeGreaterThanOrEqual(6);
    for (const s of samples) expect(mp[s.id], s.id).toBeDefined();
  });

  for (const s of samples) {
    it(`${s.id} ${s.note}`, () => {
      const r = ours(s);
      expect(r.status, s.id).toBe(s.expectOurs);
      const mpMatched = mp[s.id]!.match !== null;
      const oursMatched = r.status === "auto";
      if (mpMatched === oursMatched) expect(deviations[s.id], `${s.id} 已一致,请删除登记`).toBeUndefined();
      else expect(deviations[s.id]?.kind, `${s.id} 与 MP 不一致但没有登记`).toBe("intentional");
    });
  }
});

describe("trustedIds 评分", () => {
  const movie: IdentityCandidate = {
    provider: "tmdb",
    entityType: "movie",
    externalId: "872585",
    titles: ["Oppenheimer", "奥本海默"],
    year: 2023,
    aliases: [],
    linkedExternalIds: [{ provider: "imdb", id: "tt15398776" }],
  };
  it("标题对不上:trusted → multi_evidence(auto);不 trusted 仍是 rejected", () => {
    const p = parseRelease("Something Else 2023 1080p WEB-DL");
    expect(scoreCandidate(p, movie).level).toBe("rejected");
    const r = scoreCandidate(p, movie, { trustedIds: [{ provider: "imdb", id: "tt15398776" }] });
    expect(r.level).toBe("multi_evidence");
    expect(r.evidence).toContain("site_id");
  });
  it("TMDB ID 直接对上候选同样算", () => {
    const p = parseRelease("Something Else 2023 1080p WEB-DL");
    expect(scoreCandidate(p, movie, { trustedIds: [{ provider: "tmdb", id: "872585" }] }).level).toBe("multi_evidence");
  });
  it("标题也对上时不降级(rule_confirmed 保留)", () => {
    const p = parseRelease("Oppenheimer 2023 1080p WEB-DL");
    expect(scoreCandidate(p, movie, { trustedIds: [{ provider: "imdb", id: "tt15398776" }] }).level).toBe(
      "rule_confirmed",
    );
  });
  it("别的 ID 不影响", () => {
    const p = parseRelease("Something Else 2023 1080p WEB-DL");
    expect(scoreCandidate(p, movie, { trustedIds: [{ provider: "imdb", id: "tt0000001" }] }).level).toBe("rejected");
  });
  it("年份冲突 → needs_confirm(ID 可能挂错)", () => {
    const p = parseRelease("Oppenheimer 1990 1080p WEB-DL");
    const r = scoreCandidate(p, movie, { trustedIds: [{ provider: "imdb", id: "tt15398776" }] });
    expect(r.level).toBe("needs_confirm");
    expect(r.evidence).toContain("site_id_year_conflict");
  });
});