/**
 * Example: Calculate and display critical path for a project
 * 
 * Usage:
 *   npx tsx examples/critical-path.ts <project-id>
 */

import { createGanttClientFromEnv } from '../index.js';

async function main(): Promise<void> {
  const projectId = process.argv[2];
  
  if (!projectId) {
    console.error('Usage: npx tsx examples/critical-path.ts <project-id>');
    process.exit(1);
  }

  const client = createGanttClientFromEnv();
  
  console.log(`Calculating critical path for project ${projectId}...\n`);
  
  const criticalPath = await client.calculateCriticalPath(projectId);
  
  console.log(`Critical Path (${criticalPath.totalDuration} days):`);
  console.log('='.repeat(50));
  
  for (const item of criticalPath.path) {
    const statusIcon = item.task.status === 'COMPLETED' ? '✓' : 
                      item.task.status === 'IN_PROGRESS' ? '⊙' : '□';
    console.log(`${statusIcon} ${item.task.title}`);
    console.log(`   Duration: ${item.duration} days`);
    console.log(`   Cumulative: ${item.cumulativeDuration} days`);
    console.log(`   Status: ${item.task.status}`);
    
    if (item.task.metadata.dependencies && item.task.metadata.dependencies.length > 0) {
      console.log(`   Depends on: ${item.task.metadata.dependencies.length} task(s)`);
    }
    
    console.log('');
  }
  
  if (criticalPath.nonCriticalTasks.length > 0) {
    console.log('\nNon-Critical Tasks (can be delayed):');
    console.log('='.repeat(50));
    
    for (const item of criticalPath.nonCriticalTasks.sort((a, b) => a.slack - b.slack)) {
      console.log(`- ${item.task.title}`);
      console.log(`  Slack: ${item.slack} days`);
      console.log(`  Status: ${item.task.status}`);
      console.log('');
    }
  }
}

main().catch(error => {
  console.error('Error:', error.message);
  process.exit(1);
});