import assert from 'node:assert/strict';
import { readdir, readFile } from 'node:fs/promises';
import path from 'node:path';
import test from 'node:test';
import { fileURLToPath } from 'node:url';

import { releaseBodyFormattingIssues } from './validate-release.mjs';

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

const cleanBody = `Veritas Kanban 6.0.2 is the supported stable release. This paragraph is intentionally longer than the previous 240-character limit because Markdown source should use one logical line per paragraph and let GitHub wrap the rendered text to the available page width instead of forcing narrow manual breaks into the release notes.

## What changed

- **Chat stays inside the application window.** The Workbench dock is reversible.
- **Version information is authoritative.** Support data comes from one record.

\`\`\`bash
brew update
brew upgrade --cask bradgroux/tap/veritas-kanban
\`\`\`
`;

test('accepts full-width release Markdown', () => {
  assert.deepEqual(releaseBodyFormattingIssues(cleanBody), []);
});

test('rejects release formatting that forces narrow or manual line breaks', () => {
  const cases = [
    ['carriage return', 'First paragraph.\r\n'],
    ['Markdown hard break', 'First paragraph.  \n'],
    ['literal escaped newline', String.raw`First paragraph.\nSecond paragraph.`],
    ['HTML break', 'First paragraph.<br>\n'],
    ['blockquote', '> Narrow callout.\n'],
    ['hard-wrapped prose', 'First half of a paragraph\nsecond half of the paragraph.\n'],
    [
      'nested heading fragment',
      '## What changed\n\n### One small change\n\nA complete explanation follows.\n',
    ],
    [
      'consecutive short prose blocks',
      'First short thought.\n\nSecond short thought.\n\nThird short thought.\n',
    ],
    [
      'bold-led prose items',
      '## What changed\n\n**First labeled change.** This long release item looks like a list entry but has no list marker, so its paragraph break appears accidental in the rendered GitHub release even when the source line itself is not manually wrapped.\n\n**Second labeled change.** This second long release item proves the format guard rejects the broken structure based on its semantics rather than an arbitrary character limit.\n',
    ],
    [
      'long wrapping list item',
      '- **A long labeled change.** This item is deliberately long enough to wrap across multiple rendered lines with a hanging indent, producing the ragged layout that looks like forced carriage returns instead of using the full release width.\n',
    ],
    ['unclosed code fence', '```bash\nbrew update\n'],
  ];

  for (const [name, body] of cases) {
    assert.notDeepEqual(releaseBodyFormattingIssues(body), [], name);
  }
});

test('accepts every checked-in GitHub release body', async () => {
  const releaseBodyDir = path.join(rootDir, 'docs', 'releases');
  const releaseBodyFiles = (await readdir(releaseBodyDir))
    .filter((file) => /^v\d+\.\d+\.\d+\.md$/.test(file))
    .sort();

  assert.ok(releaseBodyFiles.length > 0, 'expected at least one checked-in release body');

  for (const file of releaseBodyFiles) {
    const body = await readFile(path.join(releaseBodyDir, file), 'utf8');
    const [major, minor, patch] = file
      .slice(1, -3)
      .split('.')
      .map((part) => Number.parseInt(part, 10));
    const compactLayout = major > 6 || (major === 6 && (minor > 0 || (minor === 0 && patch >= 2)));

    assert.deepEqual(releaseBodyFormattingIssues(body, { compactLayout }), [], file);
  }
});