/**
 * GSD Tools Tests - Validate Health Command
 *
 * Comprehensive tests for validate-health covering all 8 health checks
 * and the repair path.
 */

const { test, describe, beforeEach, afterEach } = require('node:test');
const assert = require('node:assert');
const fs = require('fs');
const path = require('path');
const { runGsdTools, createTempProject, cleanup } = require('./helpers.cjs');

// ─── Helpers for setting up minimal valid projects ────────────────────────────

function writeMinimalRoadmap(tmpDir, phases = ['1']) {
  const lines = phases.map(n => `### Phase ${n}: Phase ${n} Description`).join('\n');
  fs.writeFileSync(
    path.join(tmpDir, '.planning', 'ROADMAP.md'),
    `# Roadmap\n\n${lines}\n`
  );
}

function writeMinimalProjectMd(tmpDir, sections = ['## What This Is', '## Core Value', '## Requirements']) {
  const content = sections.map(s => `${s}\n\nContent here.\n`).join('\n');
  fs.writeFileSync(
    path.join(tmpDir, '.planning', 'PROJECT.md'),
    `# Project\n\n${content}`
  );
}

function writeMinimalStateMd(tmpDir, content) {
  const defaultContent = content || `# Session State\n\n## Current Position\n\nPhase: 1\n`;
  fs.writeFileSync(
    path.join(tmpDir, '.planning', 'STATE.md'),
    defaultContent
  );
}

function writeValidConfigJson(tmpDir) {
  fs.writeFileSync(
    path.join(tmpDir, '.planning', 'config.json'),
    JSON.stringify({ model_profile: 'balanced', commit_docs: true }, null, 2)
  );
}

// ─────────────────────────────────────────────────────────────────────────────
// validate health command — all 8 checks
// ─────────────────────────────────────────────────────────────────────────────

describe('validate health command', () => {
  let tmpDir;

  beforeEach(() => {
    tmpDir = createTempProject();
  });

  afterEach(() => {
    cleanup(tmpDir);
  });

  // ─── Check 1: .planning/ exists ───────────────────────────────────────────

  test("returns 'broken' when .planning directory is missing", () => {
    // createTempProject creates .planning/phases — remove it entirely
    fs.rmSync(path.join(tmpDir, '.planning'), { recursive: true, force: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.strictEqual(output.status, 'broken', 'should be broken');
    assert.ok(
      output.errors.some(e => e.code === 'E001'),
      `Expected E001 in errors: ${JSON.stringify(output.errors)}`
    );
  });

  // ─── Check 2: PROJECT.md exists and has required sections ─────────────────

  test('warns when PROJECT.md is missing', () => {
    // No PROJECT.md in .planning
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    writeValidConfigJson(tmpDir);
    // Create valid phase dir so no W007
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.errors.some(e => e.code === 'E002'),
      `Expected E002 in errors: ${JSON.stringify(output.errors)}`
    );
  });

  test('warns when PROJECT.md missing required sections', () => {
    // PROJECT.md missing "## Core Value" section
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'PROJECT.md'),
      '# Project\n\n## What This Is\n\nFoo\n\n## Requirements\n\nBar\n'
    );
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    writeValidConfigJson(tmpDir);
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    const w001s = output.warnings.filter(w => w.code === 'W001');
    assert.ok(w001s.length > 0, `Expected W001 warnings: ${JSON.stringify(output.warnings)}`);
    assert.ok(
      w001s.some(w => w.message.includes('## Core Value')),
      `Expected W001 mentioning "## Core Value": ${JSON.stringify(w001s)}`
    );
  });

  test('passes when PROJECT.md has all required sections', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    writeValidConfigJson(tmpDir);
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      !output.errors.some(e => e.code === 'E002'),
      `Should not have E002: ${JSON.stringify(output.errors)}`
    );
    assert.ok(
      !output.warnings.some(w => w.code === 'W001'),
      `Should not have W001: ${JSON.stringify(output.warnings)}`
    );
  });

  // ─── Check 3: ROADMAP.md exists ───────────────────────────────────────────

  test('errors when ROADMAP.md is missing', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalStateMd(tmpDir);
    writeValidConfigJson(tmpDir);
    // No ROADMAP.md

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.errors.some(e => e.code === 'E003'),
      `Expected E003 in errors: ${JSON.stringify(output.errors)}`
    );
  });

  // ─── Check 4: STATE.md exists and references valid phases ─────────────────

  test('errors when STATE.md is missing with repairable true', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeValidConfigJson(tmpDir);
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });
    // No STATE.md

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    const e004 = output.errors.find(e => e.code === 'E004');
    assert.ok(e004, `Expected E004 in errors: ${JSON.stringify(output.errors)}`);
    assert.strictEqual(e004.repairable, true, 'E004 should be repairable');
  });

  test('warns when STATE.md references nonexistent phase', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeValidConfigJson(tmpDir);
    // STATE.md mentions Phase 99 but only 01-a dir exists
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      '# Session State\n\nPhase 99 is the current phase.\n'
    );
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    const w002 = output.warnings.find(w => w.code === 'W002');
    assert.ok(w002, `Expected W002 in warnings: ${JSON.stringify(output.warnings)}`);
    assert.strictEqual(w002.repairable, false, 'W002 should not be auto-repairable');
  });

  // ─── Check 5: config.json valid JSON + valid schema ───────────────────────

  test('warns when config.json is missing with repairable true', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });
    // No config.json

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    const w003 = output.warnings.find(w => w.code === 'W003');
    assert.ok(w003, `Expected W003 in warnings: ${JSON.stringify(output.warnings)}`);
    assert.strictEqual(w003.repairable, true, 'W003 should be repairable');
  });

  test('errors when config.json has invalid JSON', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'config.json'),
      '{broken json'
    );
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.errors.some(e => e.code === 'E005'),
      `Expected E005 in errors: ${JSON.stringify(output.errors)}`
    );
  });

  test('warns when config.json has invalid model_profile', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'config.json'),
      JSON.stringify({ model_profile: 'invalid' })
    );
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.warnings.some(w => w.code === 'W004'),
      `Expected W004 in warnings: ${JSON.stringify(output.warnings)}`
    );
  });

  test('accepts inherit model_profile as valid', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'config.json'),
      JSON.stringify({
        model_profile: 'inherit',
        workflow: {
          research: true,
          plan_check: true,
          verifier: true,
          nyquist_validation: true,
        },
      })
    );
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      !output.warnings.some(w => w.code === 'W004'),
      `Should not warn for inherit model_profile: ${JSON.stringify(output.warnings)}`
    );
  });

  // ─── Check 6: Phase directory naming (NN-name format) ─────────────────────

  test('warns about incorrectly named phase directories', () => {
    writeMinimalProjectMd(tmpDir);
    // Roadmap with no phases to avoid W006
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'ROADMAP.md'),
      '# Roadmap\n\nNo phases yet.\n'
    );
    writeMinimalStateMd(tmpDir, '# Session State\n\nNo phase references.\n');
    writeValidConfigJson(tmpDir);
    // Create a badly named dir
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', 'bad_name'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.warnings.some(w => w.code === 'W005'),
      `Expected W005 in warnings: ${JSON.stringify(output.warnings)}`
    );
  });

  // ─── Check 7: Orphaned plans (PLAN without SUMMARY) ───────────────────────

  test('reports orphaned plans (PLAN without SUMMARY) as info', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    writeValidConfigJson(tmpDir);
    // Create 01-test phase dir with a PLAN but no matching SUMMARY
    const phaseDir = path.join(tmpDir, '.planning', 'phases', '01-test');
    fs.mkdirSync(phaseDir, { recursive: true });
    fs.writeFileSync(path.join(phaseDir, '01-01-PLAN.md'), '# Plan\n');
    // No 01-01-SUMMARY.md

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.info.some(i => i.code === 'I001'),
      `Expected I001 in info: ${JSON.stringify(output.info)}`
    );
  });

  // ─── Check 8: Consistency (roadmap/disk sync) ─────────────────────────────

  test('warns about phase in ROADMAP but not on disk', () => {
    writeMinimalProjectMd(tmpDir);
    // ROADMAP mentions Phase 5 but no 05-xxx dir
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'ROADMAP.md'),
      '# Roadmap\n\n### Phase 5: Future Phase\n'
    );
    writeMinimalStateMd(tmpDir, '# Session State\n\nNo phase refs.\n');
    writeValidConfigJson(tmpDir);
    // No phase dirs

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.warnings.some(w => w.code === 'W006'),
      `Expected W006 in warnings: ${JSON.stringify(output.warnings)}`
    );
  });

  test('warns about phase on disk but not in ROADMAP', () => {
    writeMinimalProjectMd(tmpDir);
    // ROADMAP has no phases
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'ROADMAP.md'),
      '# Roadmap\n\nNo phases listed.\n'
    );
    writeMinimalStateMd(tmpDir, '# Session State\n\nNo phase refs.\n');
    writeValidConfigJson(tmpDir);
    // Orphan phase dir not in ROADMAP
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '99-orphan'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.warnings.some(w => w.code === 'W007'),
      `Expected W007 in warnings: ${JSON.stringify(output.warnings)}`
    );
  });

  // ─── Check 5b: Nyquist validation key presence (W008) ─────────────────────

  test('detects W008 when workflow.nyquist_validation absent from config', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    // Config with workflow section but WITHOUT nyquist_validation key
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'config.json'),
      JSON.stringify({ model_profile: 'balanced', workflow: { research: true } }, null, 2)
    );
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.warnings.some(w => w.code === 'W008'),
      `Expected W008 in warnings: ${JSON.stringify(output.warnings)}`
    );
  });

  test('does not emit W008 when nyquist_validation is explicitly set', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    // Config with workflow.nyquist_validation explicitly set
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'config.json'),
      JSON.stringify({ model_profile: 'balanced', workflow: { research: true, nyquist_validation: true } }, null, 2)
    );
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      !output.warnings.some(w => w.code === 'W008'),
      `Should not have W008: ${JSON.stringify(output.warnings)}`
    );
  });

  // ─── Check 7b: Nyquist VALIDATION.md consistency (W009) ──────────────────

  test('detects W009 when RESEARCH.md has Validation Architecture but no VALIDATION.md', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    writeValidConfigJson(tmpDir);
    // Create phase dir with RESEARCH.md containing Validation Architecture
    const phaseDir = path.join(tmpDir, '.planning', 'phases', '01-setup');
    fs.mkdirSync(phaseDir, { recursive: true });
    fs.writeFileSync(
      path.join(phaseDir, '01-RESEARCH.md'),
      '# Research\n\n## Validation Architecture\n\nSome validation content.\n'
    );
    // No VALIDATION.md

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.warnings.some(w => w.code === 'W009'),
      `Expected W009 in warnings: ${JSON.stringify(output.warnings)}`
    );
  });

  test('does not emit W009 when VALIDATION.md exists alongside RESEARCH.md', () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    writeValidConfigJson(tmpDir);
    // Create phase dir with both RESEARCH.md and VALIDATION.md
    const phaseDir = path.join(tmpDir, '.planning', 'phases', '01-setup');
    fs.mkdirSync(phaseDir, { recursive: true });
    fs.writeFileSync(
      path.join(phaseDir, '01-RESEARCH.md'),
      '# Research\n\n## Validation Architecture\n\nSome validation content.\n'
    );
    fs.writeFileSync(
      path.join(phaseDir, '01-VALIDATION.md'),
      '# Validation\n\nValidation content.\n'
    );

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      !output.warnings.some(w => w.code === 'W009'),
      `Should not have W009: ${JSON.stringify(output.warnings)}`
    );
  });

  // ─── Overall status ────────────────────────────────────────────────────────

  test("returns 'healthy' when all checks pass", () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    writeValidConfigJson(tmpDir);
    // Create valid phase dir matching ROADMAP
    const phaseDir = path.join(tmpDir, '.planning', 'phases', '01-a');
    fs.mkdirSync(phaseDir, { recursive: true });
    // Add PLAN+SUMMARY so no I001
    fs.writeFileSync(path.join(phaseDir, '01-01-PLAN.md'), '# Plan\n');
    fs.writeFileSync(path.join(phaseDir, '01-01-SUMMARY.md'), '# Summary\n');

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.strictEqual(output.status, 'healthy', `Expected healthy, got ${output.status}. Errors: ${JSON.stringify(output.errors)}, Warnings: ${JSON.stringify(output.warnings)}`);
    assert.deepStrictEqual(output.errors, [], 'should have no errors');
    assert.deepStrictEqual(output.warnings, [], 'should have no warnings');
  });

  test("returns 'degraded' when only warnings exist", () => {
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    writeMinimalStateMd(tmpDir);
    // No config.json → W003 (warning, not error)
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.strictEqual(output.status, 'degraded', `Expected degraded, got ${output.status}`);
    assert.strictEqual(output.errors.length, 0, 'should have no errors');
    assert.ok(output.warnings.length > 0, 'should have warnings');
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// validate health --repair command
// ─────────────────────────────────────────────────────────────────────────────

describe('validate health --repair command', () => {
  let tmpDir;

  beforeEach(() => {
    tmpDir = createTempProject();
    // Set up base project with ROADMAP and PROJECT.md so repairs are triggered
    // (E001, E003 are not repairable so we always need .planning/ and ROADMAP.md)
    writeMinimalProjectMd(tmpDir);
    writeMinimalRoadmap(tmpDir, ['1']);
    fs.mkdirSync(path.join(tmpDir, '.planning', 'phases', '01-a'), { recursive: true });
  });

  afterEach(() => {
    cleanup(tmpDir);
  });

  test('creates config.json with defaults when missing', () => {
    // STATE.md present so no STATE repair; no config.json
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    // Ensure no config.json
    const configPath = path.join(tmpDir, '.planning', 'config.json');
    if (fs.existsSync(configPath)) fs.unlinkSync(configPath);

    const result = runGsdTools('validate health --repair', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      Array.isArray(output.repairs_performed),
      `Expected repairs_performed array: ${JSON.stringify(output)}`
    );
    const createAction = output.repairs_performed.find(r => r.action === 'createConfig');
    assert.ok(createAction, `Expected createConfig action: ${JSON.stringify(output.repairs_performed)}`);
    assert.strictEqual(createAction.success, true, 'createConfig should succeed');

    // Verify config.json now exists on disk with valid JSON and balanced profile
    assert.ok(fs.existsSync(configPath), 'config.json should now exist on disk');
    const diskConfig = JSON.parse(fs.readFileSync(configPath, 'utf-8'));
    assert.strictEqual(diskConfig.model_profile, 'balanced', 'default model_profile should be balanced');
    // Verify nested workflow structure matches config.cjs canonical format
    assert.ok(diskConfig.workflow, 'config should have nested workflow object');
    assert.strictEqual(diskConfig.workflow.research, true, 'workflow.research should default to true');
    assert.strictEqual(diskConfig.workflow.plan_check, true, 'workflow.plan_check should default to true');
    assert.strictEqual(diskConfig.workflow.verifier, true, 'workflow.verifier should default to true');
    assert.strictEqual(diskConfig.workflow.nyquist_validation, true, 'workflow.nyquist_validation should default to true');
    // Verify branch templates are present
    assert.strictEqual(diskConfig.phase_branch_template, 'gsd/phase-{phase}-{slug}');
    assert.strictEqual(diskConfig.milestone_branch_template, 'gsd/{milestone}-{slug}');
  });

  test('resets config.json when JSON is invalid', () => {
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    const configPath = path.join(tmpDir, '.planning', 'config.json');
    fs.writeFileSync(configPath, '{broken json');

    const result = runGsdTools('validate health --repair', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      Array.isArray(output.repairs_performed),
      `Expected repairs_performed: ${JSON.stringify(output)}`
    );
    const resetAction = output.repairs_performed.find(r => r.action === 'resetConfig');
    assert.ok(resetAction, `Expected resetConfig action: ${JSON.stringify(output.repairs_performed)}`);

    // Verify config.json is now valid JSON with correct nested structure
    const diskConfig = JSON.parse(fs.readFileSync(configPath, 'utf-8'));
    assert.ok(typeof diskConfig === 'object', 'config.json should be valid JSON after repair');
    assert.ok(diskConfig.workflow, 'reset config should have nested workflow object');
    assert.strictEqual(diskConfig.workflow.research, true, 'workflow.research should be true after reset');
  });

  test('regenerates STATE.md when missing', () => {
    writeValidConfigJson(tmpDir);
    // No STATE.md
    const statePath = path.join(tmpDir, '.planning', 'STATE.md');
    if (fs.existsSync(statePath)) fs.unlinkSync(statePath);

    const result = runGsdTools('validate health --repair', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      Array.isArray(output.repairs_performed),
      `Expected repairs_performed: ${JSON.stringify(output)}`
    );
    const regenerateAction = output.repairs_performed.find(r => r.action === 'regenerateState');
    assert.ok(regenerateAction, `Expected regenerateState action: ${JSON.stringify(output.repairs_performed)}`);
    assert.strictEqual(regenerateAction.success, true, 'regenerateState should succeed');

    // Verify STATE.md now exists and contains "# Session State"
    assert.ok(fs.existsSync(statePath), 'STATE.md should now exist on disk');
    const stateContent = fs.readFileSync(statePath, 'utf-8');
    assert.ok(stateContent.includes('# Session State'), 'regenerated STATE.md should contain "# Session State"');
  });

  test('does not rewrite existing STATE.md for invalid phase references', () => {
    writeValidConfigJson(tmpDir);
    const statePath = path.join(tmpDir, '.planning', 'STATE.md');
    const originalContent = '# Session State\n\nPhase 99 is current.\n';
    fs.writeFileSync(
      statePath,
      originalContent
    );

    const result = runGsdTools('validate health --repair', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      !Array.isArray(output.repairs_performed) || !output.repairs_performed.some(r => r.action === 'regenerateState'),
      `Did not expect regenerateState for W002: ${JSON.stringify(output)}`
    );

    const stateContent = fs.readFileSync(statePath, 'utf-8');
    assert.strictEqual(stateContent, originalContent, 'existing STATE.md should be preserved');

    const planningDir = path.join(tmpDir, '.planning');
    const planningFiles = fs.readdirSync(planningDir);
    const backupFile = planningFiles.find(f => f.startsWith('STATE.md.bak-'));
    assert.strictEqual(backupFile, undefined, `Did not expect backup file for non-destructive repair. Found: ${planningFiles.join(', ')}`);
  });

  test('adds nyquist_validation key to config.json via addNyquistKey repair', () => {
    writeMinimalStateMd(tmpDir, '# Session State\n\nPhase 1 in progress.\n');
    // Config with workflow section but missing nyquist_validation
    const configPath = path.join(tmpDir, '.planning', 'config.json');
    fs.writeFileSync(
      configPath,
      JSON.stringify({ model_profile: 'balanced', workflow: { research: true } }, null, 2)
    );

    const result = runGsdTools('validate health --repair', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      Array.isArray(output.repairs_performed),
      `Expected repairs_performed array: ${JSON.stringify(output)}`
    );
    const addKeyAction = output.repairs_performed.find(r => r.action === 'addNyquistKey');
    assert.ok(addKeyAction, `Expected addNyquistKey action: ${JSON.stringify(output.repairs_performed)}`);
    assert.strictEqual(addKeyAction.success, true, 'addNyquistKey should succeed');

    // Read config.json and verify workflow.nyquist_validation is true
    const diskConfig = JSON.parse(fs.readFileSync(configPath, 'utf-8'));
    assert.strictEqual(diskConfig.workflow.nyquist_validation, true, 'nyquist_validation should be true');
  });

  test('reports repairable_count correctly', () => {
    // No config.json (W003, repairable=true) and no STATE.md (E004, repairable=true)
    const configPath = path.join(tmpDir, '.planning', 'config.json');
    if (fs.existsSync(configPath)) fs.unlinkSync(configPath);
    const statePath = path.join(tmpDir, '.planning', 'STATE.md');
    if (fs.existsSync(statePath)) fs.unlinkSync(statePath);

    // Run WITHOUT --repair to just check repairable_count
    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.ok(
      output.repairable_count >= 2,
      `Expected repairable_count >= 2, got ${output.repairable_count}. Full output: ${JSON.stringify(output)}`
    );
  });

  test('phase mismatch warnings do not count as repairable issues', () => {
    writeValidConfigJson(tmpDir);
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      '# Session State\n\nPhase 99 is the current phase.\n'
    );

    const result = runGsdTools('validate health', tmpDir);
    assert.ok(result.success, `Command failed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.strictEqual(output.repairable_count, 0, `Expected no repairable issues for W002: ${JSON.stringify(output)}`);
  });
});