import { describe, test, expect } from 'bun:test';
import { validateSkill, extractRemoteSlugPatterns, extractWeightsFromTable } from './helpers/skill-parser';
import { ALL_COMMANDS, COMMAND_DESCRIPTIONS, READ_COMMANDS, WRITE_COMMANDS, META_COMMANDS } from '../browse/src/commands';
import { SNAPSHOT_FLAGS } from '../browse/src/snapshot';
import * as fs from 'fs';
import * as path from 'path';

const ROOT = path.resolve(import.meta.dir, '..');

describe('SKILL.md command validation', () => {
  test('all $B commands in SKILL.md are valid browse commands', () => {
    const result = validateSkill(path.join(ROOT, 'SKILL.md'));
    expect(result.invalid).toHaveLength(0);
    expect(result.valid.length).toBeGreaterThan(0);
  });

  test('all snapshot flags in SKILL.md are valid', () => {
    const result = validateSkill(path.join(ROOT, 'SKILL.md'));
    expect(result.snapshotFlagErrors).toHaveLength(0);
  });

  test('all $B commands in browse/SKILL.md are valid browse commands', () => {
    const result = validateSkill(path.join(ROOT, 'browse', 'SKILL.md'));
    expect(result.invalid).toHaveLength(0);
    expect(result.valid.length).toBeGreaterThan(0);
  });

  test('all snapshot flags in browse/SKILL.md are valid', () => {
    const result = validateSkill(path.join(ROOT, 'browse', 'SKILL.md'));
    expect(result.snapshotFlagErrors).toHaveLength(0);
  });

  test('all $B commands in qa/SKILL.md are valid browse commands', () => {
    const qaSkill = path.join(ROOT, 'qa', 'SKILL.md');
    if (!fs.existsSync(qaSkill)) return; // skip if missing
    const result = validateSkill(qaSkill);
    expect(result.invalid).toHaveLength(0);
  });

  test('all snapshot flags in qa/SKILL.md are valid', () => {
    const qaSkill = path.join(ROOT, 'qa', 'SKILL.md');
    if (!fs.existsSync(qaSkill)) return;
    const result = validateSkill(qaSkill);
    expect(result.snapshotFlagErrors).toHaveLength(0);
  });

  test('all $B commands in qa-only/SKILL.md are valid browse commands', () => {
    const qaOnlySkill = path.join(ROOT, 'qa-only', 'SKILL.md');
    if (!fs.existsSync(qaOnlySkill)) return;
    const result = validateSkill(qaOnlySkill);
    expect(result.invalid).toHaveLength(0);
  });

  test('all snapshot flags in qa-only/SKILL.md are valid', () => {
    const qaOnlySkill = path.join(ROOT, 'qa-only', 'SKILL.md');
    if (!fs.existsSync(qaOnlySkill)) return;
    const result = validateSkill(qaOnlySkill);
    expect(result.snapshotFlagErrors).toHaveLength(0);
  });

  test('all $B commands in plan-design-review/SKILL.md are valid browse commands', () => {
    const skill = path.join(ROOT, 'plan-design-review', 'SKILL.md');
    if (!fs.existsSync(skill)) return;
    const result = validateSkill(skill);
    expect(result.invalid).toHaveLength(0);
  });

  test('all snapshot flags in plan-design-review/SKILL.md are valid', () => {
    const skill = path.join(ROOT, 'plan-design-review', 'SKILL.md');
    if (!fs.existsSync(skill)) return;
    const result = validateSkill(skill);
    expect(result.snapshotFlagErrors).toHaveLength(0);
  });

  test('all $B commands in qa-design-review/SKILL.md are valid browse commands', () => {
    const skill = path.join(ROOT, 'qa-design-review', 'SKILL.md');
    if (!fs.existsSync(skill)) return;
    const result = validateSkill(skill);
    expect(result.invalid).toHaveLength(0);
  });

  test('all snapshot flags in qa-design-review/SKILL.md are valid', () => {
    const skill = path.join(ROOT, 'qa-design-review', 'SKILL.md');
    if (!fs.existsSync(skill)) return;
    const result = validateSkill(skill);
    expect(result.snapshotFlagErrors).toHaveLength(0);
  });
});

describe('Command registry consistency', () => {
  test('COMMAND_DESCRIPTIONS covers all commands in sets', () => {
    const allCmds = new Set([...READ_COMMANDS, ...WRITE_COMMANDS, ...META_COMMANDS]);
    const descKeys = new Set(Object.keys(COMMAND_DESCRIPTIONS));
    for (const cmd of allCmds) {
      expect(descKeys.has(cmd)).toBe(true);
    }
  });

  test('COMMAND_DESCRIPTIONS has no extra commands not in sets', () => {
    const allCmds = new Set([...READ_COMMANDS, ...WRITE_COMMANDS, ...META_COMMANDS]);
    for (const key of Object.keys(COMMAND_DESCRIPTIONS)) {
      expect(allCmds.has(key)).toBe(true);
    }
  });

  test('ALL_COMMANDS matches union of all sets', () => {
    const union = new Set([...READ_COMMANDS, ...WRITE_COMMANDS, ...META_COMMANDS]);
    expect(ALL_COMMANDS.size).toBe(union.size);
    for (const cmd of union) {
      expect(ALL_COMMANDS.has(cmd)).toBe(true);
    }
  });

  test('SNAPSHOT_FLAGS option keys are valid SnapshotOptions fields', () => {
    const validKeys = new Set([
      'interactive', 'compact', 'depth', 'selector',
      'diff', 'annotate', 'outputPath', 'cursorInteractive',
    ]);
    for (const flag of SNAPSHOT_FLAGS) {
      expect(validKeys.has(flag.optionKey)).toBe(true);
    }
  });
});

describe('Usage string consistency', () => {
  // Normalize a usage string to its structural skeleton for comparison.
  // Replaces <param-names> with <>, [optional] with [], strips parenthetical hints.
  // This catches format mismatches (e.g., <name>:<value> vs <name> <value>)
  // without tripping on abbreviation differences (e.g., <sel> vs <selector>).
  function skeleton(usage: string): string {
    return usage
      .replace(/\(.*?\)/g, '')        // strip parenthetical hints like (e.g., Enter, Tab)
      .replace(/<[^>]*>/g, '<>')      // normalize <param-name> → <>
      .replace(/\[[^\]]*\]/g, '[]')   // normalize [optional] → []
      .replace(/\s+/g, ' ')           // collapse whitespace
      .trim();
  }

  // Cross-check Usage: patterns in implementation against COMMAND_DESCRIPTIONS
  test('implementation Usage: structural format matches COMMAND_DESCRIPTIONS', () => {
    const implFiles = [
      path.join(ROOT, 'browse', 'src', 'write-commands.ts'),
      path.join(ROOT, 'browse', 'src', 'read-commands.ts'),
      path.join(ROOT, 'browse', 'src', 'meta-commands.ts'),
    ];

    // Extract "Usage: browse <pattern>" from throw new Error(...) calls
    const usagePattern = /throw new Error\(['"`]Usage:\s*browse\s+(.+?)['"`]\)/g;
    const implUsages = new Map<string, string>();

    for (const file of implFiles) {
      const content = fs.readFileSync(file, 'utf-8');
      let match;
      while ((match = usagePattern.exec(content)) !== null) {
        const usage = match[1].split('\\n')[0].trim();
        const cmd = usage.split(/\s/)[0];
        implUsages.set(cmd, usage);
      }
    }

    // Compare structural skeletons
    const mismatches: string[] = [];
    for (const [cmd, implUsage] of implUsages) {
      const desc = COMMAND_DESCRIPTIONS[cmd];
      if (!desc) continue;
      if (!desc.usage) continue;
      const descSkel = skeleton(desc.usage);
      const implSkel = skeleton(implUsage);
      if (descSkel !== implSkel) {
        mismatches.push(`${cmd}: docs "${desc.usage}" (${descSkel}) vs impl "${implUsage}" (${implSkel})`);
      }
    }

    expect(mismatches).toEqual([]);
  });
});

describe('Generated SKILL.md freshness', () => {
  test('no unresolved {{placeholders}} in generated SKILL.md', () => {
    const content = fs.readFileSync(path.join(ROOT, 'SKILL.md'), 'utf-8');
    const unresolved = content.match(/\{\{\w+\}\}/g);
    expect(unresolved).toBeNull();
  });

  test('no unresolved {{placeholders}} in generated browse/SKILL.md', () => {
    const content = fs.readFileSync(path.join(ROOT, 'browse', 'SKILL.md'), 'utf-8');
    const unresolved = content.match(/\{\{\w+\}\}/g);
    expect(unresolved).toBeNull();
  });

  test('generated SKILL.md has AUTO-GENERATED header', () => {
    const content = fs.readFileSync(path.join(ROOT, 'SKILL.md'), 'utf-8');
    expect(content).toContain('AUTO-GENERATED');
  });
});

// --- Update check preamble validation ---

describe('Update check preamble', () => {
  const skillsWithUpdateCheck = [
    'SKILL.md', 'browse/SKILL.md', 'qa/SKILL.md',
    'qa-only/SKILL.md',
    'setup-browser-cookies/SKILL.md',
    'ship/SKILL.md', 'review/SKILL.md',
    'plan-ceo-review/SKILL.md', 'plan-eng-review/SKILL.md',
    'retro/SKILL.md',
    'plan-design-review/SKILL.md',
    'qa-design-review/SKILL.md',
    'design-consultation/SKILL.md',
    'document-release/SKILL.md',
  ];

  for (const skill of skillsWithUpdateCheck) {
    test(`${skill} update check line ends with || true`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      // The second line of the bash block must end with || true
      // to avoid exit code 1 when _UPD is empty (up to date)
      const match = content.match(/\[ -n "\$_UPD" \].*$/m);
      expect(match).not.toBeNull();
      expect(match![0]).toContain('|| true');
    });
  }

  test('all skills with update check are generated from .tmpl', () => {
    for (const skill of skillsWithUpdateCheck) {
      const tmplPath = path.join(ROOT, skill + '.tmpl');
      expect(fs.existsSync(tmplPath)).toBe(true);
    }
  });

  test('update check bash block exits 0 when up to date', () => {
    // Simulate the exact preamble command from SKILL.md
    const result = Bun.spawnSync(['bash', '-c',
      '_UPD=$(echo "" || true); [ -n "$_UPD" ] && echo "$_UPD" || true'
    ], { stdout: 'pipe', stderr: 'pipe' });
    expect(result.exitCode).toBe(0);
  });

  test('update check bash block exits 0 when upgrade available', () => {
    const result = Bun.spawnSync(['bash', '-c',
      '_UPD=$(echo "UPGRADE_AVAILABLE 0.3.3 0.4.0" || true); [ -n "$_UPD" ] && echo "$_UPD" || true'
    ], { stdout: 'pipe', stderr: 'pipe' });
    expect(result.exitCode).toBe(0);
    expect(result.stdout.toString().trim()).toBe('UPGRADE_AVAILABLE 0.3.3 0.4.0');
  });
});

// --- Part 7: Cross-skill path consistency (A1) ---

describe('Cross-skill path consistency', () => {
  test('REMOTE_SLUG derivation pattern is identical across files that use it', () => {
    const patterns = extractRemoteSlugPatterns(ROOT, ['qa', 'review']);
    const allPatterns: string[] = [];

    for (const [, filePatterns] of patterns) {
      allPatterns.push(...filePatterns);
    }

    // Should find at least 2 occurrences (qa/SKILL.md + review/greptile-triage.md)
    expect(allPatterns.length).toBeGreaterThanOrEqual(2);

    // All occurrences must be character-for-character identical
    const unique = new Set(allPatterns);
    if (unique.size > 1) {
      const variants = Array.from(unique);
      throw new Error(
        `REMOTE_SLUG pattern differs across files:\n` +
        variants.map((v, i) => `  ${i + 1}: ${v}`).join('\n')
      );
    }
  });

  test('all greptile-history write references specify both per-project and global paths', () => {
    const filesToCheck = [
      'review/SKILL.md',
      'ship/SKILL.md',
      'review/greptile-triage.md',
    ];

    for (const file of filesToCheck) {
      const filePath = path.join(ROOT, file);
      if (!fs.existsSync(filePath)) continue;
      const content = fs.readFileSync(filePath, 'utf-8');

      const hasBoth = (content.includes('per-project') && content.includes('global')) ||
        (content.includes('$REMOTE_SLUG/greptile-history') && content.includes('~/.gstack/greptile-history'));

      expect(hasBoth).toBe(true);
    }
  });

  test('greptile-triage.md contains both project and global history paths', () => {
    const content = fs.readFileSync(path.join(ROOT, 'review', 'greptile-triage.md'), 'utf-8');
    expect(content).toContain('$REMOTE_SLUG/greptile-history.md');
    expect(content).toContain('~/.gstack/greptile-history.md');
  });

  test('retro/SKILL.md reads global greptile-history (not per-project)', () => {
    const content = fs.readFileSync(path.join(ROOT, 'retro', 'SKILL.md'), 'utf-8');
    expect(content).toContain('~/.gstack/greptile-history.md');
    // Should NOT reference per-project path for reads
    expect(content).not.toContain('$REMOTE_SLUG/greptile-history.md');
  });
});

// --- Part 7: QA skill structure validation (A2) ---

describe('QA skill structure validation', () => {
  const qaContent = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');

  test('qa/SKILL.md has all 11 phases', () => {
    const phases = [
      'Phase 1', 'Initialize',
      'Phase 2', 'Authenticate',
      'Phase 3', 'Orient',
      'Phase 4', 'Explore',
      'Phase 5', 'Document',
      'Phase 6', 'Wrap Up',
      'Phase 7', 'Triage',
      'Phase 8', 'Fix Loop',
      'Phase 9', 'Final QA',
      'Phase 10', 'Report',
      'Phase 11', 'TODOS',
    ];
    for (const phase of phases) {
      expect(qaContent).toContain(phase);
    }
  });

  test('has all four QA modes defined', () => {
    const modes = [
      'Diff-aware',
      'Full',
      'Quick',
      'Regression',
    ];
    for (const mode of modes) {
      expect(qaContent).toContain(mode);
    }

    // Mode triggers/flags
    expect(qaContent).toContain('--quick');
    expect(qaContent).toContain('--regression');
  });

  test('has all three tiers defined', () => {
    const tiers = ['Quick', 'Standard', 'Exhaustive'];
    for (const tier of tiers) {
      expect(qaContent).toContain(tier);
    }
  });

  test('health score weights sum to 100%', () => {
    const weights = extractWeightsFromTable(qaContent);
    expect(weights.size).toBeGreaterThan(0);

    let sum = 0;
    for (const pct of weights.values()) {
      sum += pct;
    }
    expect(sum).toBe(100);
  });

  test('health score has all 8 categories', () => {
    const weights = extractWeightsFromTable(qaContent);
    const expectedCategories = [
      'Console', 'Links', 'Visual', 'Functional',
      'UX', 'Performance', 'Content', 'Accessibility',
    ];
    for (const cat of expectedCategories) {
      expect(weights.has(cat)).toBe(true);
    }
    expect(weights.size).toBe(8);
  });

  test('has four mode definitions (Diff-aware/Full/Quick/Regression)', () => {
    expect(qaContent).toContain('### Diff-aware');
    expect(qaContent).toContain('### Full');
    expect(qaContent).toContain('### Quick');
    expect(qaContent).toContain('### Regression');
  });

  test('output structure references report directory layout', () => {
    expect(qaContent).toContain('qa-report-');
    expect(qaContent).toContain('baseline.json');
    expect(qaContent).toContain('screenshots/');
    expect(qaContent).toContain('.gstack/qa-reports/');
  });
});

// --- Part 7: Greptile history format consistency (A3) ---

describe('Greptile history format consistency', () => {
  test('greptile-triage.md defines the canonical history format', () => {
    const content = fs.readFileSync(path.join(ROOT, 'review', 'greptile-triage.md'), 'utf-8');
    expect(content).toContain('<YYYY-MM-DD>');
    expect(content).toContain('<owner/repo>');
    expect(content).toContain('<type');
    expect(content).toContain('<file-pattern>');
    expect(content).toContain('<category>');
  });

  test('review/SKILL.md and ship/SKILL.md both reference greptile-triage.md for write details', () => {
    const reviewContent = fs.readFileSync(path.join(ROOT, 'review', 'SKILL.md'), 'utf-8');
    const shipContent = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');

    expect(reviewContent.toLowerCase()).toContain('greptile-triage.md');
    expect(shipContent.toLowerCase()).toContain('greptile-triage.md');
  });

  test('greptile-triage.md defines all 9 valid categories', () => {
    const content = fs.readFileSync(path.join(ROOT, 'review', 'greptile-triage.md'), 'utf-8');
    const categories = [
      'race-condition', 'null-check', 'error-handling', 'style',
      'type-safety', 'security', 'performance', 'correctness', 'other',
    ];
    for (const cat of categories) {
      expect(content).toContain(cat);
    }
  });
});

// --- Hardcoded branch name detection in templates ---

describe('No hardcoded branch names in SKILL templates', () => {
  const tmplFiles = [
    'ship/SKILL.md.tmpl',
    'review/SKILL.md.tmpl',
    'qa/SKILL.md.tmpl',
    'plan-ceo-review/SKILL.md.tmpl',
    'retro/SKILL.md.tmpl',
    'document-release/SKILL.md.tmpl',
  ];

  // Patterns that indicate hardcoded 'main' in git commands
  const gitMainPatterns = [
    /\bgit\s+diff\s+(?:origin\/)?main\b/,
    /\bgit\s+log\s+(?:origin\/)?main\b/,
    /\bgit\s+fetch\s+origin\s+main\b/,
    /\bgit\s+merge\s+origin\/main\b/,
    /\borigin\/main\b/,
  ];

  // Lines that are allowed to mention 'main' (fallback logic, prose)
  const allowlist = [
    /fall\s*back\s+to\s+`main`/i,
    /fall\s*back\s+to\s+`?main`?/i,
    /typically\s+`?main`?/i,
    /If\s+on\s+`main`/i,  // old pattern — should not exist
  ];

  for (const tmplFile of tmplFiles) {
    test(`${tmplFile} has no hardcoded 'main' in git commands`, () => {
      const filePath = path.join(ROOT, tmplFile);
      if (!fs.existsSync(filePath)) return;
      const lines = fs.readFileSync(filePath, 'utf-8').split('\n');
      const violations: string[] = [];

      for (let i = 0; i < lines.length; i++) {
        const line = lines[i];
        const isAllowlisted = allowlist.some(p => p.test(line));
        if (isAllowlisted) continue;

        for (const pattern of gitMainPatterns) {
          if (pattern.test(line)) {
            violations.push(`Line ${i + 1}: ${line.trim()}`);
            break;
          }
        }
      }

      if (violations.length > 0) {
        throw new Error(
          `${tmplFile} has hardcoded 'main' in git commands:\n` +
          violations.map(v => `  ${v}`).join('\n')
        );
      }
    });
  }
});

// --- Part 7b: TODOS-format.md reference consistency ---

describe('TODOS-format.md reference consistency', () => {
  test('review/TODOS-format.md exists and defines canonical format', () => {
    const content = fs.readFileSync(path.join(ROOT, 'review', 'TODOS-format.md'), 'utf-8');
    expect(content).toContain('**What:**');
    expect(content).toContain('**Why:**');
    expect(content).toContain('**Priority:**');
    expect(content).toContain('**Effort:**');
    expect(content).toContain('## Completed');
  });

  test('skills that write TODOs reference TODOS-format.md', () => {
    const shipContent = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    const ceoPlanContent = fs.readFileSync(path.join(ROOT, 'plan-ceo-review', 'SKILL.md'), 'utf-8');
    const engPlanContent = fs.readFileSync(path.join(ROOT, 'plan-eng-review', 'SKILL.md'), 'utf-8');

    expect(shipContent).toContain('TODOS-format.md');
    expect(ceoPlanContent).toContain('TODOS-format.md');
    expect(engPlanContent).toContain('TODOS-format.md');
  });
});

// --- v0.4.1 feature coverage: RECOMMENDATION format, session awareness, enum completeness ---

describe('v0.4.1 preamble features', () => {
  const skillsWithPreamble = [
    'SKILL.md', 'browse/SKILL.md', 'qa/SKILL.md',
    'qa-only/SKILL.md',
    'setup-browser-cookies/SKILL.md',
    'ship/SKILL.md', 'review/SKILL.md',
    'plan-ceo-review/SKILL.md', 'plan-eng-review/SKILL.md',
    'retro/SKILL.md',
    'plan-design-review/SKILL.md',
    'qa-design-review/SKILL.md',
    'design-consultation/SKILL.md',
    'document-release/SKILL.md',
  ];

  for (const skill of skillsWithPreamble) {
    test(`${skill} contains RECOMMENDATION format`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      expect(content).toContain('RECOMMENDATION: Choose');
      expect(content).toContain('AskUserQuestion');
    });

    test(`${skill} contains session awareness`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      expect(content).toContain('_SESSIONS');
      expect(content).toContain('RECOMMENDATION');
    });
  }
});

// --- Contributor mode preamble structure validation ---

describe('Contributor mode preamble structure', () => {
  const skillsWithPreamble = [
    'SKILL.md', 'browse/SKILL.md', 'qa/SKILL.md',
    'qa-only/SKILL.md',
    'setup-browser-cookies/SKILL.md',
    'ship/SKILL.md', 'review/SKILL.md',
    'plan-ceo-review/SKILL.md', 'plan-eng-review/SKILL.md',
    'retro/SKILL.md',
  ];

  for (const skill of skillsWithPreamble) {
    test(`${skill} has 0-10 rating in contributor mode`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      expect(content).toContain('0 to 10');
      expect(content).toContain('My rating');
    });

    test(`${skill} has calibration example`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      expect(content).toContain('Calibration');
      expect(content).toContain('the bar');
    });

    test(`${skill} has "what would make this a 10" field`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      expect(content).toContain('What would make this a 10');
    });

    test(`${skill} uses periodic reflection (not per-command)`, () => {
      const content = fs.readFileSync(path.join(ROOT, skill), 'utf-8');
      expect(content).toContain('workflow step');
      expect(content).not.toContain('After you use gstack-provided CLIs');
    });
  }
});

describe('Enum & Value Completeness in review checklist', () => {
  const checklist = fs.readFileSync(path.join(ROOT, 'review', 'checklist.md'), 'utf-8');

  test('checklist has Enum & Value Completeness section', () => {
    expect(checklist).toContain('Enum & Value Completeness');
  });

  test('Enum & Value Completeness is classified as CRITICAL', () => {
    // It should appear under Pass 1 — CRITICAL, not Pass 2
    const pass1Start = checklist.indexOf('### Pass 1');
    const pass2Start = checklist.indexOf('### Pass 2');
    const enumStart = checklist.indexOf('Enum & Value Completeness');
    expect(enumStart).toBeGreaterThan(pass1Start);
    expect(enumStart).toBeLessThan(pass2Start);
  });

  test('Enum & Value Completeness mentions tracing through consumers', () => {
    expect(checklist).toContain('Trace it through every consumer');
    expect(checklist).toContain('case');
    expect(checklist).toContain('allowlist');
  });

  test('Enum & Value Completeness is in the severity classification as CRITICAL', () => {
    const gateSection = checklist.slice(checklist.indexOf('## Severity Classification'));
    // The ASCII art has CRITICAL on the left and INFORMATIONAL on the right
    // Enum & Value Completeness should appear on a line with the CRITICAL tree (├─ or └─)
    const enumLine = gateSection.split('\n').find(l => l.includes('Enum & Value Completeness'));
    expect(enumLine).toBeDefined();
    // It's on the left (CRITICAL) side — starts with ├─ or └─
    expect(enumLine!.trimStart().startsWith('├─') || enumLine!.trimStart().startsWith('└─')).toBe(true);
  });

  test('Fix-First Heuristic exists in checklist and is referenced by review + ship', () => {
    expect(checklist).toContain('## Fix-First Heuristic');
    expect(checklist).toContain('AUTO-FIX');
    expect(checklist).toContain('ASK');

    const reviewSkill = fs.readFileSync(path.join(ROOT, 'review/SKILL.md'), 'utf-8');
    const shipSkill = fs.readFileSync(path.join(ROOT, 'ship/SKILL.md'), 'utf-8');
    expect(reviewSkill).toContain('AUTO-FIX');
    expect(reviewSkill).toContain('[AUTO-FIXED]');
    expect(shipSkill).toContain('AUTO-FIX');
    expect(shipSkill).toContain('[AUTO-FIXED]');
  });
});

// --- Part 7: Planted-bug fixture validation (A4) ---

describe('Planted-bug fixture validation', () => {
  test('qa-eval ground truth has exactly 5 planted bugs', () => {
    const groundTruth = JSON.parse(
      fs.readFileSync(path.join(ROOT, 'test', 'fixtures', 'qa-eval-ground-truth.json'), 'utf-8')
    );
    expect(groundTruth.bugs).toHaveLength(5);
    expect(groundTruth.total_bugs).toBe(5);
  });

  test('qa-eval-spa ground truth has exactly 5 planted bugs', () => {
    const groundTruth = JSON.parse(
      fs.readFileSync(path.join(ROOT, 'test', 'fixtures', 'qa-eval-spa-ground-truth.json'), 'utf-8')
    );
    expect(groundTruth.bugs).toHaveLength(5);
    expect(groundTruth.total_bugs).toBe(5);
  });

  test('qa-eval-checkout ground truth has exactly 5 planted bugs', () => {
    const groundTruth = JSON.parse(
      fs.readFileSync(path.join(ROOT, 'test', 'fixtures', 'qa-eval-checkout-ground-truth.json'), 'utf-8')
    );
    expect(groundTruth.bugs).toHaveLength(5);
    expect(groundTruth.total_bugs).toBe(5);
  });

  test('qa-eval.html contains the planted bugs', () => {
    const html = fs.readFileSync(path.join(ROOT, 'browse', 'test', 'fixtures', 'qa-eval.html'), 'utf-8');
    // BUG 1: broken link
    expect(html).toContain('/nonexistent-404-page');
    // BUG 2: disabled submit
    expect(html).toContain('disabled');
    // BUG 3: overflow
    expect(html).toContain('overflow: hidden');
    // BUG 4: missing alt
    expect(html).toMatch(/<img[^>]*src="\/logo\.png"[^>]*>/);
    expect(html).not.toMatch(/<img[^>]*src="\/logo\.png"[^>]*alt=/);
    // BUG 5: console error
    expect(html).toContain("Cannot read properties of undefined");
  });

  test('review-eval-vuln.rb contains expected vulnerability patterns', () => {
    const content = fs.readFileSync(path.join(ROOT, 'test', 'fixtures', 'review-eval-vuln.rb'), 'utf-8');
    expect(content).toContain('params[:id]');
    expect(content).toContain('update_column');
  });
});

// --- CEO review mode validation ---

describe('CEO review mode validation', () => {
  const content = fs.readFileSync(path.join(ROOT, 'plan-ceo-review', 'SKILL.md'), 'utf-8');

  test('has all four CEO review modes defined', () => {
    const modes = ['SCOPE EXPANSION', 'SELECTIVE EXPANSION', 'HOLD SCOPE', 'SCOPE REDUCTION'];
    for (const mode of modes) {
      expect(content).toContain(mode);
    }
  });

  test('has CEO plan persistence step', () => {
    expect(content).toContain('ceo-plans');
    expect(content).toContain('status: ACTIVE');
  });

  test('has docs/designs promotion section', () => {
    expect(content).toContain('docs/designs');
    expect(content).toContain('PROMOTED');
  });

  test('mode quick reference has four columns', () => {
    expect(content).toContain('EXPANSION');
    expect(content).toContain('SELECTIVE');
    expect(content).toContain('HOLD SCOPE');
    expect(content).toContain('REDUCTION');
  });
});

// --- gstack-slug helper ---

describe('gstack-slug', () => {
  const SLUG_BIN = path.join(ROOT, 'bin', 'gstack-slug');

  test('binary exists and is executable', () => {
    expect(fs.existsSync(SLUG_BIN)).toBe(true);
    const stat = fs.statSync(SLUG_BIN);
    expect(stat.mode & 0o111).toBeGreaterThan(0);
  });

  test('outputs SLUG and BRANCH lines in a git repo', () => {
    const result = Bun.spawnSync([SLUG_BIN], { cwd: ROOT, stdout: 'pipe', stderr: 'pipe' });
    expect(result.exitCode).toBe(0);
    const output = result.stdout.toString();
    expect(output).toContain('SLUG=');
    expect(output).toContain('BRANCH=');
  });

  test('SLUG does not contain forward slashes', () => {
    const result = Bun.spawnSync([SLUG_BIN], { cwd: ROOT, stdout: 'pipe', stderr: 'pipe' });
    const slug = result.stdout.toString().match(/SLUG=(.*)/)?.[1] ?? '';
    expect(slug).not.toContain('/');
    expect(slug.length).toBeGreaterThan(0);
  });

  test('BRANCH does not contain forward slashes', () => {
    const result = Bun.spawnSync([SLUG_BIN], { cwd: ROOT, stdout: 'pipe', stderr: 'pipe' });
    const branch = result.stdout.toString().match(/BRANCH=(.*)/)?.[1] ?? '';
    expect(branch).not.toContain('/');
    expect(branch.length).toBeGreaterThan(0);
  });

  test('output is eval-compatible (KEY=VALUE format)', () => {
    const result = Bun.spawnSync([SLUG_BIN], { cwd: ROOT, stdout: 'pipe', stderr: 'pipe' });
    const lines = result.stdout.toString().trim().split('\n');
    expect(lines.length).toBe(2);
    expect(lines[0]).toMatch(/^SLUG=.+/);
    expect(lines[1]).toMatch(/^BRANCH=.+/);
  });
});

// --- Test Bootstrap validation ---

describe('Test Bootstrap ({{TEST_BOOTSTRAP}}) integration', () => {
  test('TEST_BOOTSTRAP resolver produces valid content', () => {
    const qaContent = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(qaContent).toContain('Test Framework Bootstrap');
    expect(qaContent).toContain('RUNTIME:ruby');
    expect(qaContent).toContain('RUNTIME:node');
    expect(qaContent).toContain('RUNTIME:python');
    expect(qaContent).toContain('no-test-bootstrap');
    expect(qaContent).toContain('BOOTSTRAP_DECLINED');
  });

  test('TEST_BOOTSTRAP appears in qa/SKILL.md', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Test Framework Bootstrap');
    expect(content).toContain('TESTING.md');
    expect(content).toContain('CLAUDE.md');
  });

  test('TEST_BOOTSTRAP appears in ship/SKILL.md', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Test Framework Bootstrap');
    expect(content).toContain('Step 2.5');
  });

  test('TEST_BOOTSTRAP appears in qa-design-review/SKILL.md', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa-design-review', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Test Framework Bootstrap');
  });

  test('TEST_BOOTSTRAP does NOT appear in qa-only/SKILL.md', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa-only', 'SKILL.md'), 'utf-8');
    expect(content).not.toContain('Test Framework Bootstrap');
    // But should have the recommendation note
    expect(content).toContain('No test framework detected');
    expect(content).toContain('Run `/qa` to bootstrap');
  });

  test('bootstrap includes framework knowledge table', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('vitest');
    expect(content).toContain('minitest');
    expect(content).toContain('pytest');
    expect(content).toContain('cargo test');
    expect(content).toContain('phpunit');
    expect(content).toContain('ExUnit');
  });

  test('bootstrap includes CI/CD pipeline generation', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('.github/workflows/test.yml');
    expect(content).toContain('GitHub Actions');
  });

  test('bootstrap includes first real tests step', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('First real tests');
    expect(content).toContain('git log --since=30.days');
    expect(content).toContain('Prioritize by risk');
  });

  test('bootstrap includes vibe coding philosophy', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('vibe coding');
    expect(content).toContain('100% test coverage');
  });

  test('WebSearch is in allowed-tools for qa, ship, qa-design-review', () => {
    const qa = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    const ship = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    const qaDesign = fs.readFileSync(path.join(ROOT, 'qa-design-review', 'SKILL.md'), 'utf-8');
    expect(qa).toContain('WebSearch');
    expect(ship).toContain('WebSearch');
    expect(qaDesign).toContain('WebSearch');
  });
});

// --- Phase 8e.5 regression test validation ---

describe('Phase 8e.5 regression test generation', () => {
  test('qa/SKILL.md contains Phase 8e.5', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('8e.5. Regression Test');
    expect(content).toContain('test(qa): regression test');
    expect(content).toContain('WTF-likelihood exclusion');
  });

  test('qa/SKILL.md Rule 13 is amended for regression tests', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Only modify tests when generating regression tests in Phase 8e.5');
    expect(content).not.toContain('Never modify tests or CI configuration');
  });

  test('qa-design-review has CSS-aware Phase 8e.5 variant', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa-design-review', 'SKILL.md'), 'utf-8');
    expect(content).toContain('8e.5. Regression Test (design-review variant)');
    expect(content).toContain('CSS-only');
    expect(content).toContain('test(design): regression test');
  });

  test('regression test includes full attribution comment format', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('// Regression: ISSUE-NNN');
    expect(content).toContain('// Found by /qa on');
    expect(content).toContain('// Report: .gstack/qa-reports/');
  });

  test('regression test uses auto-incrementing names', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
    expect(content).toContain('auto-incrementing');
    expect(content).toContain('max number + 1');
  });
});

// --- Step 3.4 coverage audit validation ---

describe('Step 3.4 test coverage audit', () => {
  test('ship/SKILL.md contains Step 3.4', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Step 3.4: Test Coverage Audit');
    expect(content).toContain('CODE PATH COVERAGE');
  });

  test('Step 3.4 includes quality scoring rubric', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('★★★');
    expect(content).toContain('★★');
    expect(content).toContain('edge cases AND error paths');
    expect(content).toContain('happy path only');
  });

  test('Step 3.4 includes before/after test count', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Count test files before');
    expect(content).toContain('Count test files after');
  });

  test('ship PR body includes Test Coverage section', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('## Test Coverage');
  });

  test('ship rules include test generation rule', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Step 3.4 generates coverage tests');
    expect(content).toContain('Never commit failing tests');
  });

  test('Step 3.4 includes vibe coding philosophy', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('vibe coding becomes yolo coding');
  });

  test('Step 3.4 traces actual codepaths, not just syntax', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Trace every codepath');
    expect(content).toContain('Trace data flow');
    expect(content).toContain('Diagram the execution');
  });

  test('Step 3.4 maps user flows and interaction edge cases', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Map user flows');
    expect(content).toContain('Interaction edge cases');
    expect(content).toContain('Double-click');
    expect(content).toContain('Navigate away');
    expect(content).toContain('Error states the user can see');
    expect(content).toContain('Empty/zero/boundary states');
  });

  test('Step 3.4 diagram includes USER FLOW COVERAGE section', () => {
    const content = fs.readFileSync(path.join(ROOT, 'ship', 'SKILL.md'), 'utf-8');
    expect(content).toContain('USER FLOW COVERAGE');
    expect(content).toContain('Code paths:');
    expect(content).toContain('User flows:');
  });
});

// --- Retro test health validation ---

describe('Retro test health tracking', () => {
  test('retro/SKILL.md has test health data gathering commands', () => {
    const content = fs.readFileSync(path.join(ROOT, 'retro', 'SKILL.md'), 'utf-8');
    expect(content).toContain('# 10. Test file count');
    expect(content).toContain('# 11. Regression test commits');
    expect(content).toContain('# 12. Test files changed');
  });

  test('retro/SKILL.md has Test Health metrics row', () => {
    const content = fs.readFileSync(path.join(ROOT, 'retro', 'SKILL.md'), 'utf-8');
    expect(content).toContain('Test Health');
    expect(content).toContain('regression tests');
  });

  test('retro/SKILL.md has Test Health narrative section', () => {
    const content = fs.readFileSync(path.join(ROOT, 'retro', 'SKILL.md'), 'utf-8');
    expect(content).toContain('### Test Health');
    expect(content).toContain('Total test files');
    expect(content).toContain('vibe coding safe');
  });

  test('retro JSON schema includes test_health field', () => {
    const content = fs.readFileSync(path.join(ROOT, 'retro', 'SKILL.md'), 'utf-8');
    expect(content).toContain('test_health');
    expect(content).toContain('total_test_files');
    expect(content).toContain('regression_test_commits');
  });
});

// --- QA report template regression tests section ---

describe('QA report template', () => {
  test('qa-report-template.md has Regression Tests section', () => {
    const content = fs.readFileSync(path.join(ROOT, 'qa', 'templates', 'qa-report-template.md'), 'utf-8');
    expect(content).toContain('## Regression Tests');
    expect(content).toContain('committed / deferred / skipped');
    expect(content).toContain('### Deferred Tests');
    expect(content).toContain('**Precondition:**');
  });
});