import { describe, expect, test } from 'bun:test';
import { readFileSync } from 'node:fs';
import { join } from 'node:path';
import { anchor, changelogSection, isTestTag, mergeSums, pruneList, type Release, sectionSummary, shortNotes } from '../tools/forgejo-release';

const CL = `# Changelog

## Unreleased

Next things.

- a

## 0.2.0 · 2026-10-12

Summary line one
continues here. Second sentence.

- **Bullet.** detail
  more detail

## 0.1.0 · 2026-10-10

- First bullet text
  wraps here:
  - nested
- second
`;

const rel = (id: number, tag: string, draft = false): Release => ({ id, tag_name: tag, name: tag, draft, prerelease: false, body: '', assets: [] });

describe('forgejo release notes', () => {
  test('anchor matches Forgejo heading ids', () => {
    expect(anchor('0.6.0 · 2026-10-12')).toBe('0-6-0-2026-10-12');
    expect(anchor('Unreleased')).toBe('unreleased');
  });
  test('section and summary', () => {
    expect(changelogSection(CL, '0.2.0')!.heading).toBe('0.2.0 · 2026-10-12');
    expect(sectionSummary(changelogSection(CL, '0.2.0')!.body)).toBe('Summary line one continues here. Second sentence.');
    expect(sectionSummary(changelogSection(CL, '0.1.0')!.body)).toBe('First bullet text wraps here.');
    expect(changelogSection(CL, '0.3.0')).toBeNull();
  });
  test('short notes: summary, install, links; unknown version falls back to Unreleased', () => {
    const n = shortNotes(CL, '0.2.0');
    expect(n.split('\n')[0]).toBe('Summary line one continues here. Second sentence.');
    expect(n).toContain('npx storebound@0.2.0 init');
    expect(n).toContain('/src/tag/v0.2.0/CHANGELOG.md#0-2-0-2026-10-12');
    expect(shortNotes(CL, '0.3.0')).toContain('CHANGELOG.md#unreleased');
  });
  test('the real CHANGELOG gives at most 8 short lines for every version', () => {
    const real = readFileSync(join(import.meta.dir, '..', 'CHANGELOG.md'), 'utf8');
    for (const v of [...real.matchAll(/^## (\d+\.\d+\.\d+)/gm)].map(m => m[1]!)) {
      const lines = shortNotes(real, v).split('\n');
      expect(lines.length).toBeLessThanOrEqual(8);
      expect(lines.every(l => l.length <= 200)).toBe(true);
    }
  });
});

describe('forgejo release assets and pruning', () => {
  test('SHA256SUMS merge: new entries win, sorted', () => {
    const a = 'a'.repeat(64), b = 'b'.repeat(64), c = 'c'.repeat(64);
    expect(mergeSums(`${a}  x.deb\n${a}  y.exe\n`, [{ file: 'y.exe', sha256: b }, { file: 'm.dmg', sha256: c }]))
      .toBe(`${c}  m.dmg\n${a}  x.deb\n${b}  y.exe\n`);
    expect(mergeSums('', [])).toBe('\n');
  });
  test('prune keeps only the given tag, never when it is missing or a draft', () => {
    const rs = [rel(3, 'v0.8.0'), rel(2, 'v0.7.0'), rel(1, 'test-abcdef1', true)];
    expect(pruneList(rs, 'v0.8.0').remove.map(r => r.tag_name)).toEqual(['v0.7.0', 'test-abcdef1']);
    expect(pruneList(rs, 'v0.9.0').problem).toContain('nothing is deleted');
    expect(pruneList([rel(4, 'v1.0.0', true), ...rs], 'v1.0.0').problem).toContain('draft');
  });
  test('only test-<sha> tags may be deleted', () => {
    expect(isTestTag('test-0a1b2c3')).toBe(true);
    expect(isTestTag('v0.8.0')).toBe(false);
    expect(isTestTag('test-latest')).toBe(false);
  });
});