#!/usr/bin/env python3
"""Get the next upcoming calendar event."""
import os
from datetime import datetime

# Set credentials path
os.environ.setdefault('GMAIL_CREDENTIALS_PATH', os.path.expanduser('~/.gmail-mcp/credentials.json'))

from gmail_mcp.utils.GCP.gmail_auth import get_calendar_service


def format_event(event):
    """Format a single event for display."""
    start = event['start'].get('dateTime', event['start'].get('date'))

    if 'T' in start:
        start_dt = datetime.fromisoformat(start.replace('Z', '+00:00'))
        time_str = start_dt.strftime('%I:%M %p').lstrip('0')
        date_str = start_dt.strftime('%A, %b %d')
    else:
        time_str = "All day"
        date_str = start

    summary = event.get('summary', '(No title)')
    location = event.get('location', '')

    print(f"📅 Next Event — {date_str}")
    print()
    print(f"  {time_str}   {summary}")
    if location:
        print(f"            📍 {location}")

    # Show attendees if available
    attendees = event.get('attendees', [])
    if attendees:
        print(f"            👥 {len(attendees)} attendees")


def main():
    service = get_calendar_service()
    now = datetime.utcnow().isoformat() + 'Z'

    events_result = service.events().list(
        calendarId='primary',
        timeMin=now,
        maxResults=1,
        singleEvents=True,
        orderBy='startTime'
    ).execute()

    events = events_result.get('items', [])

    if not events:
        print("📅 No upcoming events")
        return

    format_event(events[0])


if __name__ == '__main__':
    main()