import caldav
import json
import requests
import tzdata
import sys

from datetime import datetime, timedelta
from zoneinfo import ZoneInfo
from urllib.parse import urlparse
from urllib.request import urlopen
import urllib.error

# Function to create calendar events from JSON data
def create_calendar_events_from_json(caldav_url, calendar_name, username, password, json, ra_user):
    try:
        # 1. Connect to CalDAV server
        client = caldav.DAVClient(
            url=caldav_url,
            username=username,
            password=password
        )

        # 2. Get principal and calendar
        my_principal = client.principal()
        my_calendar = my_principal.calendar(name=calendar_name)  # Replace with your calendar name

        # 3a. Read JSON data
        response = requests.get(json)
        response.raise_for_status()
        
        # 3b. Parse JSON + Time Calculator
        events_data = response.json()
        
        # 3c. Convert UTC to PST
        start_time = datetime.fromisoformat(events_data['StartAt']).replace(tzinfo=ZoneInfo('UTC')).astimezone(ZoneInfo('America/Los_Angeles'))
        end_time = start_time + timedelta(weeks=1)
        
        # 3d. Check if Username is on unlocks
        status = "NEEDS-ACTION"
        if "Unlocks" in events_data:
            for unlock in events_data["Unlocks"]:
                if unlock["User"] == "{ra_user}":  # Replace with your username
                    status = "COMPLETED"
                    break
        
        # 3e. Delete old data if it's the same.
        for event in my_calendar.events():
            if events_data['Achievement']['Title'] in event.data:
                event.delete()
           
        #print(f"Checking and removing duplicates...")
        remaining = [e for e in my_calendar.events() if events_data['Achievement']['Title'] in e.data]
        #print(f"Remaining duplicates: {len(remaining)}")
        
        # 4. Create events from JSON data
        print(f"Updating calendar...")
        ical_data_event = f"""BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VEVENT
SUMMARY:{events_data['Achievement']['Title']}
DTSTART:{start_time.strftime('%Y%m%dT%H%M%S')}
DTEND:{end_time.strftime('%Y%m%dT%H%M%S')}
DESCRIPTION:{events_data['Achievement']['Description']}\\n\\nhttps://retroachievements.org/achievement/{events_data['Achievement']['ID']}
LOCATION:{events_data['Game']['Title']} for the {events_data['Console']['Title']}
CATEGORIES:RetroAchievements
END:VEVENT
END:VCALENDAR
"""
        print(f"Updating reminders...")
        ical_data_todo = f"""BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VTODO
SUMMARY:{events_data['Achievement']['Title']}
DUE:{end_time.strftime('%Y%m%dT%H%M%S')}
STATUS:{status}
PRIORITY:1
DESCRIPTION:{events_data['Achievement']['Description']}\\n\\nhttps://retroachievements.org/achievement/{events_data['Achievement']['ID']}
LOCATION:{events_data['Game']['Title']} for the {events_data['Console']['Title']}
CATEGORIES:RetroAchievements
END:VTODO
END:VCALENDAR
"""

        my_calendar.save_event(ical_data_event)
        print(f"Calendar was updated.")

        my_calendar.save_todo(ical_data_todo)
        print(f"Reminders were updated.")

    except Exception as e:
        print(f"Error: {str(e)}")

# Usage example
if __name__ == "__main__":

    if len(sys.argv) != 7:
        print("Usage: python3 app.py <caldav_url> <calendar_name> <username> <password> <ra_api_key> [OPTIONAL] <ra_username>")
        sys.exit(1)

    CALDAV_URL = sys.argv[1]
    CALENDAR_NAME = sys.argv[2]
    USERNAME = sys.argv[3]
    PASSWORD = sys.argv[4]
    RA_API = sys.argv[5]
    RA_USER = sys.argv[6]

    # CalDAV server details
    JSON = f"https://retroachievements.org/API/API_GetAchievementOfTheWeek.php?&y={RA_API}"
    response = requests.get(JSON)
    data = response.json()

    create_calendar_events_from_json(CALDAV_URL, CALENDAR_NAME, USERNAME, PASSWORD, JSON, RA_USER)