import { describe, expect, it } from "vitest";
import { resolveFilesMock } from "~/api/files.ts";
import {
  clickSelect,
  collapseCrumbs,
  deleteBlockText,
  emptySelection,
  entryStatusView,
  formatEpisodes,
  moveFocus,
  nameProblem,
  opDisabledReason,
  parseEpisodes,
  pruneSelection,
  selectAll,
  shiftEpisodes,
  splitCommon,
  stemRange,
  suggestName,
} from "./model.ts";
import { rowProblem, rowsFromIdentify, setRowEntity, type WizardRow } from "./organize-wizard.tsx";

const order = ["a", "b", "c", "d", "e"];

describe("选择模型", () => {
  it("单击单选,Ctrl 切换,Shift 区间", () => {
    let s = clickSelect(emptySelection(), order, "b", {});
    expect([...s.keys]).toEqual(["b"]);
    s = clickSelect(s, order, "d", { shift: true });
    expect([...s.keys]).toEqual(["b", "c", "d"]);
    s = clickSelect(s, order, "a", { shift: true });
    expect([...s.keys]).toEqual(["a", "b"]);
    s = clickSelect(s, order, "e", { ctrl: true });
    expect([...s.keys].sort()).toEqual(["a", "b", "e"]);
    s = clickSelect(s, order, "e", { ctrl: true });
    expect([...s.keys].sort()).toEqual(["a", "b"]);
  });

  it("Shift+Ctrl 区间并入已有选择", () => {
    let s = clickSelect(emptySelection(), order, "a", {});
    s = clickSelect(s, order, "c", { ctrl: true });
    s = clickSelect(s, order, "e", { shift: true, ctrl: true });
    expect([...s.keys].sort()).toEqual(["a", "c", "d", "e"]);
  });

  it("方向键移动焦点,Shift 扩选,边界夹住", () => {
    let s = moveFocus(emptySelection(), order, 1, false);
    expect(s.focus).toBe("a");
    s = moveFocus({ ...s, anchor: "a", keys: new Set(["a"]) }, order, 2, true);
    expect([...s.keys]).toEqual(["a", "b", "c"]);
    s = moveFocus(s, order, 99, false);
    expect(s.focus).toBe("e");
    s = moveFocus(s, order, -99, false);
    expect(s.focus).toBe("a");
  });

  it("全选与刷新后剪枝", () => {
    const s = selectAll(order, emptySelection());
    expect(s.keys.size).toBe(5);
    const p = pruneSelection({ ...s, focus: "e", anchor: "z" }, ["a", "e"]);
    expect([...p.keys]).toEqual(["a", "e"]);
    expect(p.anchor).toBeNull();
    expect(p.focus).toBe("e");
  });
});

const base = {
  name: "x.mkv",
  path: "x.mkv",
  type: "file" as const,
  size: 1,
  mtime: null,
  ext: "mkv",
  fileKind: "video" as const,
  status: "plain" as const,
  escape: false,
  asset: null,
  download: null,
  media: null,
  dirSummary: null,
};

describe("状态与禁用原因", () => {
  it("状态徽标带文字,H&R 未满足为 warning,逃逸为 destructive", () => {
    expect(entryStatusView({ ...base, status: "registered" })?.label).toBe("已登记");
    expect(
      entryStatusView({
        ...base,
        status: "seeding",
        download: { taskId: "t", status: "completed", progress: 1, hnr: "unsatisfied" },
      }),
    ).toMatchObject({ tone: "warning" });
    expect(
      entryStatusView({
        ...base,
        status: "downloading",
        download: { taskId: "t", status: "downloading", progress: 0.425, hnr: "unknown" },
      })?.label,
    ).toBe("下载中 42%");
    expect(entryStatusView({ ...base, escape: true })?.tone).toBe("destructive");
    expect(entryStatusView(base)).toBeNull();
  });

  it("做种中不能改名/删除;只读登记根不能移动;未登记不能刮削", () => {
    const lib = { kind: "library" as const, writable: true };
    const seeding = {
      ...base,
      status: "seeding" as const,
      download: { taskId: "t", status: "completed" as const, progress: 1, hnr: "unsatisfied" as const },
    };
    expect(opDisabledReason("rename", seeding, lib)).toMatch(/做种/);
    expect(opDisabledReason("delete", seeding, lib)).toMatch(/下载任务/);
    expect(opDisabledReason("move", seeding, lib)).toMatch(/H&R/);
    expect(opDisabledReason("move", base, { kind: "library", writable: false })).toMatch(/只读/);
    expect(opDisabledReason("rename", base, { kind: "download", writable: false })).toBeNull();
    expect(opDisabledReason("scrape", base, lib)).toMatch(/未登记/);
    expect(opDisabledReason("copyPath", { ...base, escape: true }, lib)).toBeNull();
    expect(opDisabledReason("rename", { ...base, escape: true }, lib)).toMatch(/登记目录之外/);
  });

  it("删除阻断分软硬", () => {
    expect(deleteBlockText("needs_retire")?.soft).toBe(true);
    expect(deleteBlockText("download_active")?.soft).toBe(false);
    expect(deleteBlockText(null)).toBeNull();
  });
});

describe("路径与名称", () => {
  it("面包屑折叠保留根与末两段", () => {
    expect(collapseCrumbs([1, 2, 3, 4, 5], 3)).toEqual([1, null, 4, 5]);
    expect(collapseCrumbs([1, 2], 3)).toEqual([1, 2]);
  });
  it("名称校验与改名默认选中主名", () => {
    expect(nameProblem("a/b")).toBeTruthy();
    expect(nameProblem("..")).toBeTruthy();
    expect(nameProblem(" ok.mkv ")).toBeNull();
    expect(stemRange("Movie (2024).mkv", false)).toEqual([0, 12]);
    expect(stemRange(".hidden", false)).toEqual([0, 7]);
    expect(stemRange("dir.name", true)).toEqual([0, 8]);
  });
  it("前后路径按段取公共前缀", () => {
    expect(splitCommon("/a/b/c.mkv", "/a/b/d.mkv")).toEqual({ common: "/a/b/", a: "c.mkv", b: "d.mkv" });
    expect(splitCommon("/x/1.mkv", "/y/1.mkv").common).toBe("/");
  });
  it("集号解析/格式化/偏移", () => {
    expect(parseEpisodes("3-5")).toEqual([3, 4, 5]);
    expect(parseEpisodes("3,7")).toEqual([3, 7]);
    expect(parseEpisodes("x")).toBeNull();
    expect(parseEpisodes("")).toEqual([]);
    expect(formatEpisodes([5, 3, 4])).toBe("3-5");
    expect(formatEpisodes([1, 3])).toBe("1,3");
    expect(shiftEpisodes([1, 2], -1)).toEqual([1, 1]);
    expect(shiftEpisodes([1, 2], 12)).toEqual([13, 14]);
  });
  it("建议名:电影与剧集", () => {
    expect(
      suggestName({ title: "沙丘2", year: 2024, kind: "movie" }, { season: null, episodes: [] }, "a.mkv", false),
    ).toBe("沙丘2 (2024).mkv");
    expect(
      suggestName({ title: "人生切割术", year: 2022, kind: "series" }, { season: 2, episodes: [1] }, "a.mkv", false),
    ).toBe("人生切割术 (2022) - S02E01.mkv");
    expect(suggestName({ title: "A/B", year: null, kind: "movie" }, { season: null, episodes: [] }, "d", true)).toBe(
      "A B",
    );
  });
});

const item = (path: string, over: Partial<{ id: string | null; level: "high" | "low" }> = {}) => ({
  root: "lib:x",
  path,
  parsed: {
    title: "T",
    year: null,
    season: 1,
    episodes: [2],
    resolution: null,
    source: null,
    releaseGroup: null,
    mediaKind: "series" as const,
  },
  candidates:
    over.id === null
      ? []
      : [
          {
            mediaEntityId: over.id ?? "e1",
            provider: "local",
            externalId: null,
            title: "T",
            year: 2020,
            kind: "series" as const,
            level: over.level ?? ("high" as const),
            score: 1,
            reasons: [],
          },
        ],
  suggestion: { mediaEntityId: null, contentUnitId: null, contentUnit: null },
  existing: { assetId: null },
  warnings: [],
});

describe("整理向导门禁", () => {
  it("高置信自动选中;低置信/无候选为未决,排除后放行", () => {
    const rows = rowsFromIdentify(
      [item("d/a.mkv"), item("d/b.mkv", { level: "low" }), item("e/c.mkv", { id: null })],
      new Set(),
    );
    expect(rows[0]?.entity?.id).toBe("e1");
    expect(rows[0]?.episodes).toBe("2");
    expect(rowProblem(rows[0] as WizardRow)).toBeNull();
    expect(rowProblem(rows[1] as WizardRow)).toMatch(/作品/);
    expect(rowProblem({ ...(rows[2] as WizardRow), excluded: true })).toBeNull();
  });

  it("改作品时同目录未手动改过的行跟随,别的目录不动", () => {
    let rows = rowsFromIdentify(
      [item("d/a.mkv", { id: null }), item("d/b.mkv", { id: null }), item("e/c.mkv", { id: null })],
      new Set(),
    );
    const e = { id: "e9", title: "X", year: 2001, kind: "series" };
    rows = setRowEntity(rows, rows[0]?.key as string, e);
    expect(rows.map((r) => r.entity?.id ?? null)).toEqual(["e9", "e9", null]);
    rows = setRowEntity(rows, rows[1]?.key as string, { ...e, id: "e8" });
    rows = setRowEntity(rows, rows[0]?.key as string, { ...e, id: "e7" });
    expect(rows.map((r) => r.entity?.id ?? null)).toEqual(["e7", "e8", null]);
  });

  it("剧集缺季号或集号非法时未决;做种路径标 H&R", () => {
    const rows = rowsFromIdentify([item("seed/a.mkv")], new Set(["seed"]));
    expect(rows[0]?.hnrBlocked).toBe(true);
    expect(rowProblem({ ...(rows[0] as WizardRow), season: "" })).toMatch(/季号/);
    expect(rowProblem({ ...(rows[0] as WizardRow), episodes: "1-x" })).toMatch(/集号/);
  });
});

describe("演示开关", () => {
  it("只在开发构建生效,?mock=1 记住,?mock=0 清掉", () => {
    const store = new Map<string, string>();
    const storage = {
      getItem: (k: string) => store.get(k) ?? null,
      setItem: (k: string, v: string) => void store.set(k, v),
      removeItem: (k: string) => void store.delete(k),
    };
    expect(resolveFilesMock({ dev: false, search: "?mock=1", storage })).toBe(false);
    expect(resolveFilesMock({ dev: true, search: "?mock=1", storage })).toBe(true);
    expect(resolveFilesMock({ dev: true, search: "", storage })).toBe(true);
    expect(resolveFilesMock({ dev: true, search: "?mock=0", storage })).toBe(false);
  });
});