// allow-test-rule: source-text-is-the-product
// Workflow .md / agent .md / command .md / reference .md files — their text
// IS what the runtime loads. Testing text content tests the deployed contract.
// Per CONTRIBUTING.md exception matrix.

/**
 * MSD Tools Tests - discuss-phase incremental checkpoint saves
 *
 * Validates that the discuss-phase workflow includes incremental
 * checkpoint logic to prevent answer loss on session interruption.
 *
 * Closes: #1485
 */

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

describe('discuss-phase incremental checkpoint saves (#1485)', () => {
  const workflowPath = path.join(__dirname, '..', 'msd-core', 'workflows', 'discuss-phase.md');
  // After the discuss-phase progressive-disclosure split (#717), checkpoint logic lives in the
  // default mode file and the JSON schema lives in the templates directory.
  const defaultModePath = path.join(__dirname, '..', 'msd-core', 'workflows', 'discuss-phase', 'modes', 'default.md');
  const checkpointTplPath = path.join(__dirname, '..', 'msd-core', 'workflows', 'discuss-phase', 'templates', 'checkpoint.json');

  function readAll() {
    // Fail loudly if any required source is missing — silent filtering would
    // let a regression that deletes the extracted default-mode or checkpoint
    // template pass the suite.
    for (const p of [workflowPath, defaultModePath, checkpointTplPath]) {
      assert.ok(fs.existsSync(p), `Required discuss-phase checkpoint source missing: ${p}`);
    }
    return [workflowPath, defaultModePath, checkpointTplPath]
      .map(p => fs.readFileSync(p, 'utf8'))
      .join('\n');
  }

  test('workflow writes checkpoint file after each area completes', () => {
    const content = readAll();
    assert.ok(
      content.includes('DISCUSS-CHECKPOINT.json'),
      'workflow should reference checkpoint JSON file'
    );
    assert.ok(
      content.includes('Incremental checkpoint') || content.includes('incremental checkpoint'),
      'workflow should describe incremental checkpoint saves'
    );
  });

  test('checkpoint includes decisions, areas completed, and areas remaining', () => {
    const content = readAll();
    assert.ok(content.includes('areas_completed'), 'checkpoint should track completed areas');
    assert.ok(content.includes('areas_remaining'), 'checkpoint should track remaining areas');
    assert.ok(content.includes('"decisions"'), 'checkpoint should include decisions object');
  });

  test('check_existing step detects checkpoint for session resume', () => {
    const content = readAll();
    // The check_existing step should look for checkpoint files
    assert.ok(
      content.includes('DISCUSS-CHECKPOINT.json') && content.includes('Resume'),
      'check_existing should detect checkpoint and offer resume'
    );
  });

  test('checkpoint is cleaned up after successful CONTEXT.md write', () => {
    const content = fs.readFileSync(workflowPath, 'utf8');
    assert.ok(
      content.includes('rm -f') && content.includes('DISCUSS-CHECKPOINT'),
      'checkpoint file should be deleted after successful write_context'
    );
  });

  test('success criteria include checkpoint requirements', () => {
    const content = fs.readFileSync(workflowPath, 'utf8');
    // eslint-disable-next-line local/no-unbounded-quantifier -- parses this repo's own workflow .md content, fixed-size author-controlled content
    const criteriaMatch = content.match(/<success_criteria>([\s\S]*?)<\/success_criteria>/);
    const criteria = criteriaMatch ? criteriaMatch[1] : '';
    assert.ok(criteria.includes('checkpoint') || criteria.includes('Checkpoint'),
      'success criteria should mention checkpoints');
    assert.ok(criteria.includes('resume') || criteria.includes('Resume'),
      'success criteria should mention session resume capability');
  });

  test('auto mode also writes checkpoints', () => {
    const content = fs.readFileSync(workflowPath, 'utf8');
    // The checkpoint section should mention auto mode
    assert.ok(
      content.includes('auto-resolves') || content.includes('--auto'),
      'checkpoint logic should apply to both interactive and auto modes'
    );
  });
});