#!/usr/bin/env node
/**
 * Create a calendar event
 * 
 * Usage:
 *   node create-event.mjs --title "Meeting" --start "2026-02-03 14:00:00" --end "2026-02-03 15:00:00"
 */

import { parseArgs } from 'util';
import { createEvent, DEFAULT_CALENDAR_ID, DEFAULT_TIMEZONE } from '../lib/calendar.mjs';
import { resolveNames, getDisplayNameSync } from '../lib/employees.mjs';

const { values } = parseArgs({
  options: {
    title: { type: 'string' },
    description: { type: 'string', default: '' },
    start: { type: 'string' },
    end: { type: 'string' },
    attendees: { type: 'string', default: '' },
    'attendee-ids': { type: 'string', default: '' },
    location: { type: 'string', default: '' },
    timezone: { type: 'string', default: DEFAULT_TIMEZONE },
    calendar: { type: 'string', default: DEFAULT_CALENDAR_ID },
    help: { type: 'boolean', short: 'h' }
  }
});

if (values.help) {
  console.log(`
Create a Lark calendar event

Options:
  --title         Event title (required)
  --description   Event description
  --start         Start time: YYYY-MM-DD HH:MM:SS (required)
  --end           End time: YYYY-MM-DD HH:MM:SS (required)
  --attendees     Comma-separated names (auto-resolved to user_ids)
  --attendee-ids  Comma-separated user_ids directly
  --location      Event location
  --timezone      IANA timezone (default: Asia/Singapore)
  --calendar      Calendar ID (uses default Claw calendar if omitted)
  -h, --help      Show this help

Examples:
  node create-event.mjs --title "Team Sync" --start "2026-02-03 10:00:00" --end "2026-02-03 10:30:00"
  node create-event.mjs --title "Review" --start "2026-02-03 14:00:00" --end "2026-02-03 15:00:00" --attendees "Boyang,RK,jc"
`);
  process.exit(0);
}

// Validate required fields
if (!values.title) {
  console.error('Error: --title is required');
  process.exit(1);
}
if (!values.start) {
  console.error('Error: --start is required');
  process.exit(1);
}
if (!values.end) {
  console.error('Error: --end is required');
  process.exit(1);
}

// Resolve attendees
let attendeeIds = [];
if (values['attendee-ids']) {
  attendeeIds = values['attendee-ids'].split(',').map(s => s.trim()).filter(Boolean);
}
if (values.attendees) {
  const names = values.attendees.split(',').map(s => s.trim()).filter(Boolean);
  const { resolved, unresolved } = resolveNames(names);
  attendeeIds = [...new Set([...attendeeIds, ...resolved])];
  if (unresolved.length > 0) {
    console.warn(`Warning: Could not resolve names: ${unresolved.join(', ')}`);
  }
}

async function main() {
  try {
    console.log('Creating event...');
    console.log(`  Title: ${values.title}`);
    console.log(`  Start: ${values.start}`);
    console.log(`  End: ${values.end}`);
    console.log(`  Timezone: ${values.timezone}`);
    console.log(`  Attendees: ${attendeeIds.map(id => getDisplayNameSync(id)).join(', ') || '(Boyang will be added automatically)'}`);
    if (values.location) console.log(`  Location: ${values.location}`);
    console.log('');
    
    const result = await createEvent({
      title: values.title,
      description: values.description,
      startTime: values.start,
      endTime: values.end,
      attendeeIds,
      location: values.location,
      timezone: values.timezone,
      calendarId: values.calendar
    });
    
    console.log('✅ Event created successfully!');
    console.log('');
    console.log('Event Details:');
    console.log(`  Event ID: ${result.event.event_id}`);
    console.log(`  Title: ${result.event.summary}`);
    console.log(`  Link: ${result.event.app_link || 'N/A'}`);
    console.log(`  Attendees: ${result.attendeeNames || 'N/A'}`);
    
    // Output JSON for programmatic use
    if (process.env.JSON_OUTPUT) {
      console.log('\nJSON:');
      console.log(JSON.stringify(result, null, 2));
    }
    
  } catch (error) {
    console.error('❌ Failed to create event:', error.message);
    if (error.larkResponse) {
      console.error('Lark response:', JSON.stringify(error.larkResponse, null, 2));
    }
    process.exit(1);
  }
}

main();