/**
 * @note `fs.glob` et. al. are powered by {@link Bun.Glob}, which is extensively
 * tested elsewhere. These tests check API compatibility with Node.js.
 */
import { afterAll, beforeAll, describe, expect, it } from "bun:test";
import { isWindows, tempDirWithFiles } from "harness";
import fs from "node:fs";

let tmp: string;
beforeAll(() => {
  tmp = tempDirWithFiles("fs-glob", {
    "foo.txt": "foo",
    a: {
      "bar.txt": "bar",
      "baz.js": "baz",
    },
    "folder.test": {
      "file.txt": "content",
      "another-folder": {
        "some-file.txt": "content",
      },
    },
  });
});

afterAll(() => {
  return fs.promises.rmdir(tmp, { recursive: true });
});

describe("fs.glob", () => {
  it("has a length of 3", () => {
    expect(fs).toHaveProperty("glob");
    expect(typeof fs.glob).toEqual("function");
    expect(fs.glob).toHaveLength(3);
  });

  it("is named 'glob'", () => {
    expect(fs.glob.name).toEqual("glob");
  });

  it("when successful, passes paths to the callback", done => {
    fs.glob("*.txt", { cwd: tmp }, (err, paths) => {
      expect(err).toBeNull();
      expect(paths.sort()).toStrictEqual(["foo.txt"]);
      done();
    });
  });

  it("can filter out files", done => {
    const exclude = (path: string) => path.endsWith(".js");
    fs.glob("a/*", { cwd: tmp, exclude }, (err, paths) => {
      if (err) done(err);
      if (isWindows) {
        expect(paths).toStrictEqual(["a\\bar.txt"]);
      } else {
        expect(paths).toStrictEqual(["a/bar.txt"]);
      }
      done();
    });
  });

  it("can filter out files (2)", done => {
    const exclude = ["**/*.js"];
    fs.glob("a/*", { cwd: tmp, exclude }, (err, paths) => {
      if (err) done(err);
      if (isWindows) {
        expect(paths).toStrictEqual(["a\\bar.txt"]);
      } else {
        expect(paths).toStrictEqual(["a/bar.txt"]);
      }
      done();
    });
  });

  describe("invalid arguments", () => {
    it("throws if no callback is provided", () => {
      expect(() => fs.glob("*.txt")).toThrow(TypeError);
      expect(() => fs.glob("*.txt", undefined)).toThrow(TypeError);
      expect(() => fs.glob("*.txt", { cwd: tmp })).toThrow(TypeError);
      expect(() => fs.glob("*.txt", { cwd: tmp }, undefined)).toThrow(TypeError);
    });
  });

  it("matches directories", () => {
    const paths = fs.globSync("*.test", { cwd: tmp });
    expect(paths).toContain("folder.test");
  });

  it("supports arrays of patterns", () => {
    const expected = isWindows ? ["a\\bar.txt", "a\\baz.js"] : ["a/bar.txt", "a/baz.js"];
    expect(fs.globSync(["a/bar.txt", "a/baz.js"], { cwd: tmp })).toStrictEqual(expected);
  });
}); // </fs.glob>

describe("fs.globSync", () => {
  it("has a length of 2", () => {
    expect(fs).toHaveProperty("globSync");
    expect(typeof fs.globSync).toBe("function");
    expect(fs.globSync).toHaveLength(2);
  });

  it("is named 'globSync'", () => {
    expect(fs.globSync.name).toEqual("globSync");
  });

  it.each([
    ["*.txt", ["foo.txt"]],
    ["a/**", isWindows ? ["a\\bar.txt", "a\\baz.js"] : ["a/bar.txt", "a/baz.js"]],
  ])("fs.glob(%p, { cwd: /tmp/fs-glob }) === %p", (pattern, expected) => {
    expect(fs.globSync(pattern, { cwd: tmp }).sort()).toStrictEqual(expected);
  });

  describe("when process.cwd() is set", () => {
    let oldProcessCwd: () => string;
    beforeAll(() => {
      oldProcessCwd = process.cwd;
      process.cwd = () => tmp;
    });
    afterAll(() => {
      process.cwd = oldProcessCwd;
    });

    it("respects the new cwd", () => {
      expect(fs.globSync("*.txt")).toStrictEqual(["foo.txt"]);
    });
  });

  it("can filter out files", () => {
    const exclude = (path: string) => path.endsWith(".js");
    const expected = isWindows ? ["a\\bar.txt"] : ["a/bar.txt"];
    expect(fs.globSync("a/*", { cwd: tmp, exclude })).toStrictEqual(expected);
  });
  it("can filter out files (2)", () => {
    const exclude = ["**/*.js"];
    const expected = isWindows ? ["a\\bar.txt"] : ["a/bar.txt"];
    expect(fs.globSync("a/*", { cwd: tmp, exclude })).toStrictEqual(expected);
  });

  it("works without providing options", () => {
    const oldProcessCwd = process.cwd;
    try {
      process.cwd = () => tmp;

      const paths = fs.globSync("*.txt");
      expect(paths).toContain("foo.txt");
    } finally {
      process.cwd = oldProcessCwd;
    }
  });

  it("matches directories", () => {
    const paths = fs.globSync("*.test", { cwd: tmp });
    expect(paths).toContain("folder.test");
  });

  it("supports arrays of patterns", () => {
    const expected = isWindows ? ["a\\bar.txt", "a\\baz.js"] : ["a/bar.txt", "a/baz.js"];
    expect(fs.globSync(["a/bar.txt", "a/baz.js"], { cwd: tmp })).toStrictEqual(expected);
  });
}); // </fs.globSync>

describe("fs.promises.glob", () => {
  it("has a length of 2", () => {
    expect(fs.promises).toHaveProperty("glob");
    expect(typeof fs.promises.glob).toBe("function");
    expect(fs.promises.glob).toHaveLength(2);
  });

  it("is named 'glob'", () => {
    expect(fs.promises.glob.name).toEqual("glob");
  });

  it("returns an AsyncIterable over matched paths", async () => {
    const iter = fs.promises.glob("*.txt", { cwd: tmp });
    // FIXME: .toHaveProperty does not support symbol keys
    expect(iter[Symbol.asyncIterator]).toBeDefined();
    for await (const path of iter) {
      expect(path).toMatch(/\.txt$/);
    }
  });

  it("works without providing options", async () => {
    const oldProcessCwd = process.cwd;
    try {
      process.cwd = () => tmp;

      const iter = fs.promises.glob("*.txt");
      expect(iter[Symbol.asyncIterator]).toBeDefined();

      const paths = [];
      for await (const path of iter) {
        paths.push(path);
      }

      expect(paths).toContain("foo.txt");
    } finally {
      process.cwd = oldProcessCwd;
    }
  });

  it("matches directories", async () => {
    const iter = fs.promises.glob("*.test", { cwd: tmp });
    expect(iter[Symbol.asyncIterator]).toBeDefined();
    let count = 0;
    for await (const path of iter) {
      expect(path).toBe("folder.test");
      count++;
    }
    expect(count).toBe(1);
  });

  it("can filter out files", async () => {
    const exclude = (path: string) => path.endsWith(".js");
    const expected = isWindows ? ["a\\bar.txt"] : ["a/bar.txt"];
    expect(Array.fromAsync(fs.promises.glob("a/*", { cwd: tmp, exclude }))).resolves.toStrictEqual(expected);
  });

  it("can filter out files (2)", async () => {
    const exclude = ["**/*.js"];
    const expected = isWindows ? ["a\\bar.txt"] : ["a/bar.txt"];
    expect(Array.fromAsync(fs.promises.glob("a/*", { cwd: tmp, exclude }))).resolves.toStrictEqual(expected);

    const exclude2 = ["folder.test/another-folder"];
    const expected2 = isWindows ? ["folder.test\\file.txt"] : ["folder.test/file.txt"];
    expect(
      Array.fromAsync(fs.promises.glob("folder.test/**/*", { cwd: tmp, exclude: exclude2 })),
    ).resolves.toStrictEqual(expected2);
  });

  it("supports arrays of patterns", async () => {
    const expected = isWindows ? ["a\\bar.txt", "a\\baz.js"] : ["a/bar.txt", "a/baz.js"];
    expect(Array.fromAsync(fs.promises.glob(["a/bar.txt", "a/baz.js"], { cwd: tmp }))).resolves.toStrictEqual(expected);
  });
}); // </fs.promises.glob>