import { describe, expect, it } from "vitest";
import {
  DEFAULT_SETTINGS,
  DEPRECATED_SETTINGS_FIELDS,
  resolveSettingsHash,
  SETTINGS_GROUPS,
  SETTINGS_HASH_ALIASES,
  SETTINGS_SECTIONS,
  SettingsSectionId,
  settingsSectionForLegacyTab,
} from "../src/settings.ts";

describe("SETTINGS_SECTIONS", () => {
  it("分区顺序与 SettingsSectionId 一致,按接入 → 流程 → 系统三组排", () => {
    expect(SETTINGS_SECTIONS.map((s) => s.id)).toEqual(SettingsSectionId.options);
    const groups = SETTINGS_SECTIONS.map((s) => s.group);
    const order = SETTINGS_GROUPS.map((g) => g.id);
    expect([...groups].sort((a, b) => order.indexOf(a) - order.indexOf(b))).toEqual(groups);
    for (const s of SETTINGS_SECTIONS) {
      expect(s.description, s.id).not.toBe("");
      expect(s.anchors.length, s.id).toBeGreaterThan(0);
      expect(new Set(s.anchors.map((a) => a.id)).size, s.id).toBe(s.anchors.length);
    }
  });

  it("每个存储 key 的每个字段(弃用字段除外)恰好归属一个分区", () => {
    const deprecated = new Set<string>(DEPRECATED_SETTINGS_FIELDS);
    const all = Object.entries(DEFAULT_SETTINGS)
      .flatMap(([key, v]) => Object.keys(v).map((f) => `${key}.${f}`))
      .filter((f) => !deprecated.has(f));
    const owned = SETTINGS_SECTIONS.flatMap((s) => s.fields);
    expect(new Set(owned).size).toBe(owned.length);
    expect([...owned].sort()).toEqual([...all].sort());
  });

  it("近期新增的设置归到用户找得到的分区", () => {
    const owner = (f: string) => SETTINGS_SECTIONS.find((s) => s.fields.includes(f))?.id;
    expect(owner("organize.scrapeMode")).toBe("organize");
    expect(owner("organize.scrapeAfterImport")).toBe("organize");
    expect(owner("organize.minSizeBytes")).toBe("organize");
    expect(owner("agent.autoIdentifyOrganize")).toBe("agent");
    expect(owner("agent.maxToolCalls")).toBe("agent");
    expect(owner("metadata.includeSpecials")).toBe("metadata");
    expect(owner("cache.hardThresholdPercent")).toBe("downloaders");
    expect(owner("retention.seedRetentionDays")).toBe("downloaders");
    expect(owner("budget.maxConcurrentDownloads")).toBe("acquire");
    expect(owner("sites.proxyUrl")).toBe("sites");
    expect(owner("storage.cacheTtl")).toBe("cache");
    expect(owner("cache.tmdbMaxSize")).toBe("cache");
    expect(DEPRECATED_SETTINGS_FIELDS).toContain("retention.logRetentionDays");
  });

  it("旧 ?tab= 值都能落到分区", () => {
    for (const tab of [
      "automation",
      "downloaders",
      "media-servers",
      "library-roots",
      "path-mappings",
      "site-credentials",
      "api-keys",
      "pi",
      "storage",
    ]) {
      expect(settingsSectionForLegacyTab(tab), tab).not.toBeNull();
    }
    expect(settingsSectionForLegacyTab("storage")).toEqual({ section: "downloaders", anchor: "cache" });
    expect(settingsSectionForLegacyTab("api-keys")).toEqual({ section: "account", anchor: "api-keys" });
    expect(settingsSectionForLegacyTab("nope")).toBeNull();
  });
});

describe("resolveSettingsHash", () => {
  it("新 hash 原样解析", () => {
    expect(resolveSettingsHash("#agent/budget")).toEqual({ section: "agent", anchor: "budget", moved: false });
    expect(resolveSettingsHash("#downloaders")).toEqual({ section: "downloaders", anchor: null, moved: false });
    expect(resolveSettingsHash("")).toEqual({ section: null, anchor: null, moved: false });
    expect(resolveSettingsHash("#nope")).toEqual({ section: null, anchor: null, moved: false });
    // 不认识的节丢掉
    expect(resolveSettingsHash("#agent/zzz")).toEqual({ section: "agent", anchor: null, moved: false });
  });

  it("旧锚点跳到新位置", () => {
    const cases: [string, string, string | null][] = [
      ["#agent", "agent", null],
      ["#downloaders", "downloaders", null],
      ["#automation", "system", null],
      ["#automation/cache", "downloaders", "cache"],
      ["#automation/budget", "acquire", "budget"],
      ["#automation/retention", "downloaders", "seeding"],
      ["#automation/advanced", "system", "readonly"],
      ["#automation/storage-ttl", "cache", "ttl"],
      ["#automation/whatever", "system", null],
      ["#library/organize", "organize", "mode"],
      ["#library/scrape", "organize", "scrape"],
      ["#metadata/identity", "acquire", "identity"],
      ["#metadata/tmdb-cache", "cache", "tmdb-cache"],
      ["#metadata/images", "cache", "images"],
      ["#api-keys", "account", "api-keys"],
      ["#api-keys/keys", "account", "api-keys"],
      ["#account/shortcuts", "interface", "shortcuts"],
    ];
    for (const [hash, section, anchor] of cases) {
      const r = resolveSettingsHash(hash);
      expect({ section: r.section, anchor: r.anchor }, hash).toEqual({ section, anchor });
    }
    expect(resolveSettingsHash("#automation/cache").moved).toBe(true);
  });

  it("别名的目标都是存在的分区与节", () => {
    for (const [from, to] of Object.entries(SETTINGS_HASH_ALIASES)) {
      const [sid, anchor] = to.split("/");
      const s = SETTINGS_SECTIONS.find((x) => x.id === sid);
      expect(s, from).toBeDefined();
      if (anchor)
        expect(
          s?.anchors.map((a) => a.id),
          from,
        ).toContain(anchor);
    }
  });
});