import { readFileSync } from 'node:fs';
import { dirname, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';

import { describe, expect, test } from 'vitest';

import {
  RUSTFMT_EXCLUDED_WORKSPACES,
  RUSTFMT_WORKSPACES,
  selectRustfmtWorkspaces,
} from './lint-staged-rustfmt-workspaces.mjs';

const repoRoot = resolve(dirname(fileURLToPath(import.meta.url)), '..');

function selectedManifests(stagedFiles: string[], root = repoRoot) {
  return selectRustfmtWorkspaces({
    stagedFiles,
    repoRoot: root,
  }).workspaces.map((workspace) => workspace.manifestPath);
}

describe('lint-staged Rust 格式检查的 workspace 选择', () => {
  test('只暂存 server-rs 时不再连带检查 src-tauri', () => {
    // 回归判据：`cargo fmt --all` 会连未暂存的在改文件一起查，全量跑两个 workspace
    // 会让「只暂存了 server-rs 干净文件」的提交被别人的 src-tauri 改动挡下来。
    expect(
      selectedManifests([
        'server-rs/crates/api-server/src/editor_project.rs',
        'server-rs/crates/shared-contracts/src/game_creation_app.rs',
      ]),
    ).toEqual(['server-rs/Cargo.toml']);
  });

  test('只暂存 src-tauri 时不再连带检查 server-rs', () => {
    expect(
      selectedManifests(['apps/ai-game-creator-shell/src-tauri/src/assets.rs']),
    ).toEqual(['apps/ai-game-creator-shell/src-tauri/Cargo.toml']);
  });

  test('两个 workspace 都有暂存文件时两个都查', () => {
    expect(
      selectedManifests([
        'server-rs/crates/api-server/src/editor_project.rs',
        'apps/ai-game-creator-shell/src-tauri/src/assets.rs',
      ]),
    ).toEqual([
      'server-rs/Cargo.toml',
      'apps/ai-game-creator-shell/src-tauri/Cargo.toml',
    ]);
  });

  test('手工执行（没有暂存列表）时保持全量检查语义', () => {
    const selection = selectRustfmtWorkspaces({ stagedFiles: [], repoRoot });
    expect(selection.usedStagedList).toBe(false);
    expect(selection.workspaces).toEqual(RUSTFMT_WORKSPACES);
  });

  test('排除的 workspace 与未登记路径都会被显式报出，不静默通过', () => {
    const selection = selectRustfmtWorkspaces({
      stagedFiles: [
        'apps/desktop-shell/src-tauri/src/host_bridge/mod.rs',
        'somewhere-new/src/lib.rs',
      ],
      repoRoot,
    });
    // desktop-shell 当前整体未过 `cargo fmt --check`，所以它不参与检查……
    expect(selection.workspaces).toEqual([]);
    // ……但必须被点名，否则「glob 命中了、谁都没查」就是静默通过。
    expect(selection.excluded).toEqual([
      'apps/desktop-shell/src-tauri/src/host_bridge/mod.rs',
    ]);
    expect(selection.unmanaged).toEqual(['somewhere-new/src/lib.rs']);
  });

  test('Windows 反斜杠与绝对路径都归一化成仓库相对路径', () => {
    const root = 'C:\\repo\\genarrative';
    expect(
      selectedManifests(
        [
          'server-rs\\crates\\api-server\\src\\editor_project.rs',
          `${root}\\apps\\ai-game-creator-shell\\src-tauri\\src\\assets.rs`,
        ],
        root,
      ),
    ).toEqual([
      'server-rs/Cargo.toml',
      'apps/ai-game-creator-shell/src-tauri/Cargo.toml',
    ]);
  });

  test('检查清单与 package.json 的 check:rustfmt 保持同一份 workspace 表', () => {
    // 两处各写一份 workspace 列表就会漂移：hook 查的与 `npm run check:rustfmt` 查的必须同集。
    const packageJson = JSON.parse(
      readFileSync(resolve(repoRoot, 'package.json'), 'utf8'),
    ) as { scripts: Record<string, string> };
    const manifests = Array.from(
      packageJson.scripts['check:rustfmt']!.matchAll(
        /--manifest-path\s+(\S+)\s+--\s+--check/gu,
      ),
    ).map((match) => match[1]!);
    expect(manifests).toEqual(
      RUSTFMT_WORKSPACES.map((workspace) => workspace.manifestPath),
    );
    // 排除项必须是「检查清单之外」的，否则这段注释与实际行为不符。
    for (const excluded of RUSTFMT_EXCLUDED_WORKSPACES) {
      expect(
        RUSTFMT_WORKSPACES.some((workspace) =>
          workspace.prefix.startsWith(excluded.prefix),
        ),
      ).toBe(false);
    }
  });
});