/**
 * GSD Tools Tests — workflow.tdd_mode config key (capability-owned)
 *
 * Validates that the tdd_mode workflow toggle is a capability-owned config key
 * (owned by the tdd capability). Post ADR-857 phase-6 migration, workflow.tdd_mode
 * is no longer a central config key — it is owned by capabilities/tdd/capability.json
 * and resolved via the capability registry's federated config layer.
 *
 * Requirements: #1871 / ADR-857 phase 6 (#1139)
 */

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

// ─── helpers ──────────────────────────────────────────────────────────────────

function readConfig(tmpDir) {
  const configPath = path.join(tmpDir, '.planning', 'config.json');
  return JSON.parse(fs.readFileSync(configPath, 'utf-8'));
}

// ─── capability ownership ─────────────────────────────────────────────────────

describe('workflow.tdd_mode capability ownership (ADR-857 phase 6)', () => {
  test('workflow.tdd_mode is owned by the tdd capability in the registry', () => {
    const registry = require('../gsd-core/bin/lib/capability-registry.cjs');
    assert.strictEqual(
      registry.configKeys['workflow.tdd_mode'],
      'tdd',
      'workflow.tdd_mode must be owned by the tdd capability'
    );
  });

  test('workflow.tdd_mode is NOT in VALID_CONFIG_KEYS (no longer a central key)', () => {
    const { VALID_CONFIG_KEYS } = require('../gsd-core/bin/lib/config.cjs');
    assert.ok(
      !VALID_CONFIG_KEYS.has('workflow.tdd_mode'),
      'workflow.tdd_mode must NOT be in central VALID_CONFIG_KEYS — it is capability-owned'
    );
  });

  test('isCentralConfigKey returns false for workflow.tdd_mode', () => {
    const { isCentralConfigKey } = require('../gsd-core/bin/lib/config-schema.cjs');
    assert.strictEqual(
      isCentralConfigKey('workflow.tdd_mode'),
      false,
      'workflow.tdd_mode must not be a central config key post-migration'
    );
  });

  test('tdd capability has role:feature with plan:pre contribution and execute:post gate', () => {
    const registry = require('../gsd-core/bin/lib/capability-registry.cjs');
    const tdd = registry.capabilities['tdd'];
    assert.ok(tdd, 'tdd capability must be registered');
    assert.strictEqual(tdd.role, 'feature');
    assert.ok(tdd.contributions && tdd.contributions.length > 0, 'tdd must have at least one contribution');
    assert.ok(tdd.gates && tdd.gates.length > 0, 'tdd must have at least one gate');
    const contribution = tdd.contributions[0];
    assert.strictEqual(contribution.point, 'plan:pre');
    assert.ok(contribution.fragment && contribution.fragment.inline.includes('<tdd_mode_active>'), 'contribution must include tdd_mode_active block');
    const gate = tdd.gates[0];
    assert.strictEqual(gate.point, 'execute:post');
    assert.strictEqual(gate.blocking, false, 'execute:post gate must be advisory (non-blocking)');
  });
});

// ─── config round-trip (set / get) ─────────────────────────────────────────
// workflow.tdd_mode is capability-owned: config-set/config-get still work via
// raw config.json read/write (capability-owned keys bypass the central whitelist
// but are still persisted to config.json by config-set).

describe('workflow.tdd_mode config round-trip', () => {
  let tmpDir;

  beforeEach(() => {
    tmpDir = createTempProject();
    // Create a config file first
    runGsdTools('config-ensure-section', tmpDir, { HOME: tmpDir });
  });

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

  test('config-set workflow.tdd_mode true round-trips via config-get', () => {
    const setResult = runGsdTools('config-set workflow.tdd_mode true', tmpDir);
    assert.ok(setResult.success, `config-set failed: ${setResult.error}`);

    const getResult = runGsdTools('config-get workflow.tdd_mode', tmpDir);
    assert.ok(getResult.success, `config-get failed: ${getResult.error}`);
    assert.strictEqual(getResult.output, 'true');
  });

  test('config-set workflow.tdd_mode false round-trips via config-get', () => {
    // First set to true, then back to false
    runGsdTools('config-set workflow.tdd_mode true', tmpDir);

    const setResult = runGsdTools('config-set workflow.tdd_mode false', tmpDir);
    assert.ok(setResult.success, `config-set failed: ${setResult.error}`);

    const getResult = runGsdTools('config-get workflow.tdd_mode', tmpDir);
    assert.ok(getResult.success, `config-get failed: ${getResult.error}`);
    assert.strictEqual(getResult.output, 'false');
  });

  test('persists in config.json as boolean', () => {
    runGsdTools('config-set workflow.tdd_mode true', tmpDir);

    const config = readConfig(tmpDir);
    assert.strictEqual(config.workflow.tdd_mode, true);
    assert.strictEqual(typeof config.workflow.tdd_mode, 'boolean');
  });
});

// ─── init JSON exposure ────────────────────────────────────────────────────
// init plan-phase and init execute-phase still emit tdd_mode in their JSON
// output from options['tdd'] (CLI flag) or config.tdd_mode (raw config.json
// value — now undefined when not set, so defaults to false).

describe('tdd_mode in init plan-phase JSON output', () => {
  let tmpDir;

  beforeEach(() => {
    tmpDir = createTempProject();
    // Create ROADMAP.md with a phase so init plan-phase can find it
    const roadmap = [
      '# Roadmap',
      '',
      '## Phase 1 — Foundation',
      '**Status:** Planned',
      '**Requirements:** [R1]',
    ].join('\n');
    fs.writeFileSync(path.join(tmpDir, '.planning', 'ROADMAP.md'), roadmap);
    // Ensure config exists
    runGsdTools('config-ensure-section', tmpDir, { HOME: tmpDir });
  });

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

  test('init plan-phase includes tdd_mode: false by default', () => {
    const result = runGsdTools('init plan-phase 1', tmpDir);
    assert.ok(result.success, `init plan-phase failed: ${result.error}`);
    const json = JSON.parse(result.output);
    assert.strictEqual(json.tdd_mode, false);
  });

  test('init plan-phase --tdd overrides to tdd_mode: true', () => {
    const result = runGsdTools('init plan-phase 1 --tdd', tmpDir);
    assert.ok(result.success, `init plan-phase --tdd failed: ${result.error}`);
    const json = JSON.parse(result.output);
    assert.strictEqual(json.tdd_mode, true);
  });
});

describe('tdd_mode in init execute-phase JSON output', () => {
  let tmpDir;

  beforeEach(() => {
    tmpDir = createTempProject();
    // Create ROADMAP.md with a phase so init execute-phase can find it
    const roadmap = [
      '# Roadmap',
      '',
      '## Phase 1 — Foundation',
      '**Status:** Planned',
      '**Requirements:** [R1]',
    ].join('\n');
    fs.writeFileSync(path.join(tmpDir, '.planning', 'ROADMAP.md'), roadmap);
    // Ensure config exists
    runGsdTools('config-ensure-section', tmpDir, { HOME: tmpDir });
  });

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

  test('init execute-phase includes tdd_mode: false by default', () => {
    const result = runGsdTools('init execute-phase 1', tmpDir);
    assert.ok(result.success, `init execute-phase failed: ${result.error}`);
    const json = JSON.parse(result.output);
    assert.strictEqual(json.tdd_mode, false);
  });

  test('init execute-phase --tdd overrides to tdd_mode: true', () => {
    const result = runGsdTools('init execute-phase 1 --tdd', tmpDir);
    assert.ok(result.success, `init execute-phase --tdd failed: ${result.error}`);
    const json = JSON.parse(result.output);
    assert.strictEqual(json.tdd_mode, true);
  });
});