/**
 * Regression test for bug #2808
 *
 * All 85 GSD SKILL.md files declared `name: gsd:<cmd>` (colon), the deprecated
 * form. Claude Code surfaces the `name:` frontmatter field in autocomplete, so
 * users saw `/gsd:add-phase` suggestions instead of the canonical `/gsd-add-phase`.
 *
 * Root cause: skillFrontmatterName() in bin/install.js converted hyphenated
 * skill dir names to colon form (gsd-add-phase → gsd:add-phase) because
 * workflows called Skill(skill="gsd:<cmd>"). That was the original fix for
 * #2643. Since then, workflows have been updated to use hyphen form (#2808).
 *
 * Fix: skillFrontmatterName() now returns the hyphen form unchanged.
 * Four workflow Skill() colon calls updated to hyphen.
 *
 * This test verifies:
 * 1. skillFrontmatterName returns hyphen form (not colon).
 * 2. Installed SKILL.md would emit name: gsd-<cmd> (not gsd:<cmd>).
 * 3. No workflow contains a Skill(skill="gsd:<cmd>") colon call.
 */

'use strict';

process.env.GSD_TEST_MODE = '1';

const { describe, test } = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');

const ROOT = path.join(__dirname, '..');
const { convertClaudeCommandToClaudeSkill, skillFrontmatterName } =
  require(path.join(ROOT, 'bin', 'install.js'));

const WORKFLOWS_DIR = path.join(ROOT, 'get-shit-done', 'workflows');
const COMMANDS_DIR = path.join(ROOT, 'commands', 'gsd');

function walkMd(dir) {
  const files = [];
  try {
    for (const e of fs.readdirSync(dir, { withFileTypes: true })) {
      const full = path.join(dir, e.name);
      if (e.isDirectory()) files.push(...walkMd(full));
      else if (e.name.endsWith('.md')) files.push(full);
    }
  } catch (err) {
    assert.fail(`failed to read markdown files from ${dir}: ${err.message}`);
  }
  return files;
}

describe('bug-2808: SKILL.md name: uses hyphen form', () => {
  test('skillFrontmatterName returns hyphen form (not colon)', () => {
    assert.strictEqual(skillFrontmatterName('gsd-add-phase'), 'gsd-add-phase');
    assert.strictEqual(skillFrontmatterName('gsd-plan-phase'), 'gsd-plan-phase');
    assert.strictEqual(skillFrontmatterName('gsd-autonomous'), 'gsd-autonomous');
  });

  test('generated SKILL.md contains name: gsd-<cmd> (not gsd:<cmd>)', () => {
    const cmdFiles = fs.readdirSync(COMMANDS_DIR).filter(f => f.endsWith('.md'));
    assert.ok(cmdFiles.length > 0, 'expected GSD command files');

    for (const cmd of cmdFiles) {
      const base = cmd.replace(/\.md$/, '');
      const skillDirName = 'gsd-' + base;
      const src = fs.readFileSync(path.join(COMMANDS_DIR, cmd), 'utf-8');
      const skillContent = convertClaudeCommandToClaudeSkill(src, skillDirName);

      // Parse frontmatter structurally: extract name: line from the --- block.
      const fmMatch = skillContent.match(/^---\n([\s\S]*?)\n---/);
      assert.ok(fmMatch, `${cmd}: generated skill content must have a frontmatter block`);
      const fmLines = fmMatch[1].split('\n');
      const nameEntry = fmLines.find((l) => l.startsWith('name:'));
      assert.ok(nameEntry, `${cmd}: generated SKILL.md is missing required name: field`);

      const name = nameEntry.replace(/^name:\s*/, '').trim();
      assert.ok(
        !name.includes(':'),
        `${cmd}: SKILL.md name should be hyphen form, got "${name}"`
      );
      assert.ok(
        name.startsWith('gsd-'),
        `${cmd}: SKILL.md name should start with gsd-, got "${name}"`
      );
    }
  });

  test('no workflow contains Skill(skill="gsd:<cmd>") colon form', () => {
    const workflowFiles = walkMd(WORKFLOWS_DIR);
    assert.ok(
      workflowFiles.length > 0,
      `expected workflow markdown files under ${WORKFLOWS_DIR}`
    );
    const colonCalls = [];
    for (const f of workflowFiles) {
      const src = fs.readFileSync(f, 'utf-8');
      // Strip HTML comments to avoid matching commented-out examples.
      const stripped = src.replace(/<!--[\s\S]*?-->/g, '');
      // Scan each line for Skill() calls using the colon form.
      // Parsing line-by-line is more precise than a multi-line regex
      // and avoids false positives from incidental matches in prose.
      for (const line of stripped.split('\n')) {
        const colonCallRe = /Skill\(skill=['"]gsd:([a-z0-9-]+)['"]/gi;
        let m;
        while ((m = colonCallRe.exec(line)) !== null) {
          colonCalls.push(`${path.basename(f)}: Skill(skill="gsd:${m[1]}")`);
        }
      }
    }
    assert.deepStrictEqual(
      colonCalls,
      [],
      'deprecated colon-form Skill() calls found — update to gsd-<cmd>: ' + colonCalls.join(', ')
    );
  });
});