/**
 * @file Tests for the Changes panel's folder tree: grouping by folder,
 * compacting single-child chains, counts, ordering and the per-folder file list.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */
import { describe, it, expect } from "vitest";
import { changeTree, treeFiles } from "../changeTree";

const rows = [
  "app2/Services/TwitterService.php",
  "app2/Services/Redis/SlowAlertRedisService.php",
  "app2/Enums/Redis/RedisSlowAlertKey.php",
  "config/monitoring.php",
  "config/app.php",
  "README.md",
].map((path) => ({ path }));

describe("changeTree", () => {
  const root = changeTree(rows);

  it("puts root files at the top level and counts every file", () => {
    expect(root.count).toBe(6);
    expect(root.files.map((f) => f.name)).toEqual(["README.md"]);
    expect(root.dirs.map((d) => d.name)).toEqual(["app2", "config"]);
  });

  it("compacts a folder chain with nothing else in it", () => {
    const app2 = root.dirs[0]!;
    expect(app2.count).toBe(3);
    expect(app2.dirs.map((d) => [d.name, d.path])).toEqual([
      ["Enums/Redis", "app2/Enums/Redis"],
      ["Services", "app2/Services"],
    ]);
    // Services holds a file, so it is not folded into Redis.
    expect(app2.dirs[1]!.dirs[0]!.name).toBe("Redis");
  });

  it("sorts files by name and lists a folder's files", () => {
    expect(root.dirs[1]!.files.map((f) => f.name)).toEqual(["app.php", "monitoring.php"]);
    expect(treeFiles(root.dirs[0]!).map((f) => f.path)).toHaveLength(3);
  });
});

describe("changeTree — an untracked folder", () => {
  it("shows git's `dir/` entry as a named row in its parent folder", () => {
    const root = changeTree([{ path: "docs/plans/analytics-parity/" }, { path: "docs/x.md" }]);
    const docs = root.dirs[0]!;
    expect(docs.files.map((f) => f.name)).toEqual(["x.md"]);
    expect(docs.dirs[0]!.files.map((f) => f.name)).toEqual(["analytics-parity/"]);
  });
});