import os
import time
import logging
import requests
import json
import uuid

from django.shortcuts import render, redirect
from django_celery_beat.models import PeriodicTask, CrontabSchedule
from django.utils import timezone
from .forms import EmailScheduleForm
from .tasks import send_weather_email


logger = logging.getLogger(__name__)

API_KEY = 'a7cc162fc60a76d2e31461071634b8ce'

def get_weather_data(city):
    url = f'https://api.openweathermap.org/data/2.5/weather?q={city}&appid={API_KEY}&units=metric&lang=en'
    logger.info(f"[weather_request] city={city}")
    response = requests.get(url)
    response.raise_for_status()
    data = response.json()
    logger.debug(f"[weather_response] city={city} response={data}")
    return {
        'city': city,
        'temperature': data['main']['temp'],
        'description': data['weather'][0]['description'],
        'icon': data['weather'][0]['icon'],
    }

def index(request):
    weather_data = None
    error = None

    if request.method == "POST":
        city = request.POST.get("city")
        start = time.time()

        try:
            weather_data = get_weather_data(city)
            duration = time.time() - start
            logger.info(f"[weather_success] city={city} duration={duration:.3f}s temp={weather_data['temperature']}")

        except requests.HTTPError as http_err:
            error = f"Weather in {city} can't be found"
            logger.error(f"[weather_http_error] city={city} error={http_err}")
            weather_data = None

        except Exception as e:
            error = "Something went wrong."
            logger.exception(f"[weather_unexpected_error] city={city} error={e}")

    return render(request, 'weather/index.html', {
        'weather': weather_data,
        'error': error,
    })



def schedule_email_view(request):
    email_sent = False

    if request.method == 'POST':
        form = EmailScheduleForm(request.POST)
        if form.is_valid():
            city = form.cleaned_data['city']
            email = form.cleaned_data['email']

            send_weather_email.delay(city, email)
            email_sent = True  # флаг для шаблона
    else:
        form = EmailScheduleForm()

    return render(request, 'weather/schedule_email.html', {'form': form, 'email_sent': email_sent})