/**
 * GSD Tools Tests - State
 */

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');

describe('state-snapshot command', () => {
  let tmpDir;

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

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

  test('missing STATE.md returns error', () => {
    const result = runGsdTools('state-snapshot', tmpDir);
    assert.ok(result.success, `Command should succeed: ${result.error}`);

    const output = JSON.parse(result.output);
    assert.strictEqual(output.error, 'STATE.md not found', 'should report missing file');
  });

  test('extracts basic fields from STATE.md', () => {
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      `# Project State

**Current Phase:** 03
**Current Phase Name:** API Layer
**Total Phases:** 6
**Current Plan:** 03-02
**Total Plans in Phase:** 3
**Status:** In progress
**Progress:** 45%
**Last Activity:** 2024-01-15
**Last Activity Description:** Completed 03-01-PLAN.md
`
    );

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

    const output = JSON.parse(result.output);
    assert.strictEqual(output.current_phase, '03', 'current phase extracted');
    assert.strictEqual(output.current_phase_name, 'API Layer', 'phase name extracted');
    assert.strictEqual(output.total_phases, 6, 'total phases extracted');
    assert.strictEqual(output.current_plan, '03-02', 'current plan extracted');
    assert.strictEqual(output.total_plans_in_phase, 3, 'total plans extracted');
    assert.strictEqual(output.status, 'In progress', 'status extracted');
    assert.strictEqual(output.progress_percent, 45, 'progress extracted');
    assert.strictEqual(output.last_activity, '2024-01-15', 'last activity date extracted');
  });

  test('extracts decisions table', () => {
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      `# Project State

**Current Phase:** 01

## Decisions Made

| Phase | Decision | Rationale |
|-------|----------|-----------|
| 01 | Use Prisma | Better DX than raw SQL |
| 02 | JWT auth | Stateless authentication |
`
    );

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

    const output = JSON.parse(result.output);
    assert.strictEqual(output.decisions.length, 2, 'should have 2 decisions');
    assert.strictEqual(output.decisions[0].phase, '01', 'first decision phase');
    assert.strictEqual(output.decisions[0].summary, 'Use Prisma', 'first decision summary');
    assert.strictEqual(output.decisions[0].rationale, 'Better DX than raw SQL', 'first decision rationale');
  });

  test('extracts blockers list', () => {
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      `# Project State

**Current Phase:** 03

## Blockers

- Waiting for API credentials
- Need design review for dashboard
`
    );

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

    const output = JSON.parse(result.output);
    assert.deepStrictEqual(output.blockers, [
      'Waiting for API credentials',
      'Need design review for dashboard',
    ], 'blockers extracted');
  });

  test('extracts session continuity info', () => {
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      `# Project State

**Current Phase:** 03

## Session

**Last Date:** 2024-01-15
**Stopped At:** Phase 3, Plan 2, Task 1
**Resume File:** .planning/phases/03-api/03-02-PLAN.md
`
    );

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

    const output = JSON.parse(result.output);
    assert.strictEqual(output.session.last_date, '2024-01-15', 'session date extracted');
    assert.strictEqual(output.session.stopped_at, 'Phase 3, Plan 2, Task 1', 'stopped at extracted');
    assert.strictEqual(output.session.resume_file, '.planning/phases/03-api/03-02-PLAN.md', 'resume file extracted');
  });

  test('handles paused_at field', () => {
    fs.writeFileSync(
      path.join(tmpDir, '.planning', 'STATE.md'),
      `# Project State

**Current Phase:** 03
**Paused At:** Phase 3, Plan 1, Task 2 - mid-implementation
`
    );

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

    const output = JSON.parse(result.output);
    assert.strictEqual(output.paused_at, 'Phase 3, Plan 1, Task 2 - mid-implementation', 'paused_at extracted');
  });
});

// ─────────────────────────────────────────────────────────────────────────────
// summary-extract command
// ─────────────────────────────────────────────────────────────────────────────