# app.py

import streamlit as st
import requests
import datetime
import pytz
import pandas as pd

st.set_page_config(page_title="Live Weather Forecast", page_icon="☀️", layout="wide")

# **REPLACE THIS WITH YOUR ACTUAL OPENWEATHERMAP API KEY**
API_KEY = "http://api.openweathermap.org/data/2.5/forecast?id=524901&appid={API key}"  # Get your API key from openweathermap.org

def get_weather_data(city):
    base_url = "https://api.openweathermap.org/data/2.5/weather"
    params = {"q": city, "appid": API_KEY, "units": "metric"}
    try:
        response = requests.get(base_url, params=params)
        response.raise_for_status()  # Raise HTTPError for bad responses (4xx or 5xx)
        weather_data = response.json()
        return weather_data
    except requests.exceptions.RequestException as e:
        st.error(f"Error fetching weather data: {e}")
        return None

def format_time(timestamp, timezone_str):
    try:
        timezone = pytz.timezone(timezone_str)
        dt_object = datetime.datetime.fromtimestamp(timestamp, tz=timezone)
        return dt_object.strftime("%I:%M %p %Z")  # 12-hour format with timezone
    except Exception as e: # pytz errors
        st.error(f"Error formatting time: {e}")
        return "N/A"

st.title("Live Weather Forecast")

city = st.text_input("Enter a city:", "London")

if city:
    weather_data = get_weather_data(city)

    if weather_data:
        col1, col2, col3 = st.columns(3)

        with col1:
            st.metric("Temperature", f"{weather_data['main']['temp']}°C")
            st.metric("Feels Like", f"{weather_data['main']['feels_like']}°C")
            st.metric("Humidity", f"{weather_data['main']['humidity']}%")

        with col2:
            st.metric("Wind Speed", f"{weather_data['wind']['speed']} m/s")
            try:
                st.metric("Wind Gust", f"{weather_data['wind']['gust']} m/s")
            except KeyError:
                st.metric("Wind Gust", "N/A")
            st.metric("Pressure", f"{weather_data['main']['pressure']} hPa")

        with col3:
            timezone_str = weather_data.get("timezone", "UTC") / 3600  # Timezone offset in hours

            try:
                sunrise_time = format_time(weather_data['sys']['sunrise'], "Etc/GMT" + str(int(-timezone_str)))
                sunset_time = format_time(weather_data['sys']['sunset'], "Etc/GMT" + str(int(-timezone_str)))
                st.metric("Sunrise", sunrise_time)
                st.metric("Sunset", sunset_time)
            except KeyError:
                st.metric("Sunrise", "N/A")
                st.metric("Sunset", "N/A")


        st.subheader(f"Current Weather in {city}")
        weather_description = weather_data['weather'][0]['description'].capitalize()
        st.write(f"**Description:** {weather_description}")
        weather_icon_code = weather_data['weather'][0]['icon']
        weather_icon_url = f"http://openweathermap.org/img/w/{weather_icon_code}.png"
        st.image(weather_icon_url, width=100)

        lat = weather_data['coord']['lat']
        lon = weather_data['coord']['lon']
        map_data = pd.DataFrame({'lat': [lat], 'lon': [lon]})
        st.map(map_data, zoom=10)

        if st.button("Refresh"):
            st.experimental_rerun()

    else:
        st.write("Please enter a valid city name.")

else:
    st.write("Please enter a city name.")