import { describe, expect, test } from 'vitest';
import { mkdtempSync, writeFileSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import { loadConfig } from '../src/config.ts';

function writeToml(body: string): string {
  const dir = mkdtempSync(join(tmpdir(), 'board-viewer-cfg-'));
  const path = join(dir, 'auth.toml');
  writeFileSync(path, body, 'utf8');
  return path;
}

describe('loadConfig', () => {
  test('parses gitea_url, gitea_token, and board_viewer_repos from TOML', () => {
    const path = writeToml(`
gitea_url   = "https://git.example.com"
gitea_token = "abc123"
board_viewer_repos = ["OpeItcLoc03/board-viewer", "OpeItcLoc03/books"]
`);

    const cfg = loadConfig(path);

    expect(cfg).toEqual({
      baseUrl: 'https://git.example.com',
      token: 'abc123',
      repos: [
        { owner: 'OpeItcLoc03', repo: 'board-viewer' },
        { owner: 'OpeItcLoc03', repo: 'books' },
      ],
    });
  });

  test('throws when board_viewer_repos field is missing', () => {
    const path = writeToml(`gitea_url = "x"\ngitea_token = "t"\n`);

    expect(() => loadConfig(path)).toThrow(/board_viewer_repos/);
  });

  test('throws when gitea_token is missing', () => {
    const path = writeToml(`gitea_url = "x"\nboard_viewer_repos = []\n`);

    expect(() => loadConfig(path)).toThrow(/gitea_token/);
  });

  test('throws on malformed "owner/repo" entry', () => {
    const path = writeToml(`
gitea_url = "x"
gitea_token = "t"
board_viewer_repos = ["just-owner-no-slash"]
`);

    expect(() => loadConfig(path)).toThrow(/just-owner-no-slash|owner\/repo/);
  });
});