import pickle
import streamlit as st
import requests
from datetime import datetime

# إعداد الصفحة
st.set_page_config(page_title="🎬 Movie Recommender", page_icon="🎞️", layout="wide")

# -------------------- صفحة إدخال اسم المستخدم --------------------
if 'name' not in st.session_state:
    st.session_state.name = None

# التحقق إذا كان المستخدم قد أدخل اسمه بالفعل
if st.session_state.name is None:
    # صفحة إدخال الاسم
    st.title("🎬 Welcome to the Movie Recommender!")
    
    # عبارة الترحيب حسب الوقت
    hour = datetime.now().hour
    greeting_time = "Good Morning ☀️" if hour < 12 else "Good Afternoon 🌤️" if hour < 18 else "Good Evening 🌙"
    st.markdown(f"### {greeting_time}")

    #st.markdown("Please enter your name to continue.")

    name = st.text_input("Enter your name", "")
    
    if st.button("Submit"):
        if name:
            st.session_state.name = name  # تخزين الاسم في session_state
            st.success(f"Hello, {name}! Welcome to the Movie Recommender 🎬")
            # إعادة تحميل الصفحة باستخدام st.empty()
            st.empty()  # يمكن إعادة تحميل المحتوى هنا أو من خلال استبدال هذا بـ rerun بسيط
        else:
            st.error("Please enter a valid name.")  # إذا لم يتم إدخال اسم


else:
    # -------------------- تحسين تنسيق الشريط الجانبي باستخدام CSS --------------------
    st.markdown("""
    <style>
        .sidebar .sidebar-content {
            background-color: #1c1c1c; /* خلفية داكنة جدًا */
            color: white;
            padding: 15px;
            border-radius: 10px;
        }
        .sidebar .sidebar-content h1, .sidebar .sidebar-content h2 {
            font-size: 20px;
            font-weight: bold;
            color: #ecf0f1; /* لون النص */
        }
        .sidebar .sidebar-content .stButton button {
            background-color: #3498db; /* زر لون أزرق */
            color: white;
            font-weight: bold;
            border-radius: 5px;
            width: 100%;
            padding: 10px;
        }
        .sidebar .sidebar-content .stButton button:hover {
            background-color: #2980b9;
        }
    </style>
""", unsafe_allow_html=True)

    # -------------------- تحميل البيانات --------------------
    try:
        movies = pickle.load(open('movie_list.pkl', 'rb'))
        similarity = pickle.load(open('similarity.pkl', 'rb'))
    except FileNotFoundError:
        st.error("❌ Required data files (movie_list.pkl and similarity.pkl) not found.")
        st.stop()

    # -------------------- دوال المساعدة --------------------
    def fetch_poster(movie_id):
        try:
            url = f"https://api.themoviedb.org/3/movie/{movie_id}?api_key=8265bd1679663a7ea12ac168da84d2e8&language=en-US"
            response = requests.get(url)
            data = response.json()
            poster_path = data.get('poster_path')
            return f"https://image.tmdb.org/t/p/w500/{poster_path}" if poster_path else "https://via.placeholder.com/500x750?text=No+Image"
        except:
            return "https://via.placeholder.com/500x750?text=Error"

    def fetch_movie_details(movie_id):
        try:
            url = f"https://api.themoviedb.org/3/movie/{movie_id}?api_key=8265bd1679663a7ea12ac168da84d2e8&language=en-US"
            response = requests.get(url)
            data = response.json()
            overview = data.get('overview', 'No overview available.')
            rating = data.get('vote_average', 'No rating')
            release_date = data.get('release_date', 'No release date')
            genres = ', '.join([genre['name'] for genre in data.get('genres', [])])
            return overview, rating, release_date, genres
        except:
            return "No details available.", "No rating", "No release date", "No genres"

    def recommend(movie):
        if movie not in movies['title'].values:
            return [], [], []
        index = movies[movies['title'] == movie].index[0]
        distances = sorted(list(enumerate(similarity[index])), reverse=True, key=lambda x: x[1])
        recommended_names = []
        recommended_posters = []
        recommended_ids = []
        for i in distances[1:6]:
            movie_id = movies.iloc[i[0]].movie_id
            recommended_names.append(movies.iloc[i[0]].title)
            recommended_posters.append(fetch_poster(movie_id))
            recommended_ids.append(movie_id)
        return recommended_names, recommended_posters, recommended_ids

    def fetch_popular_movies():
        url = "https://api.themoviedb.org/3/movie/popular?api_key=8265bd1679663a7ea12ac168da84d2e8&language=en-US&page=1"
        try:
            response = requests.get(url)
            data = response.json()
            popular_movies = []
            for movie in data['results'][:60]:
                title = movie['title']
                poster_path = movie.get('poster_path')
                poster_url = f"https://image.tmdb.org/t/p/w500/{poster_path}" if poster_path else "https://via.placeholder.com/500x750?text=No+Image"
                movie_id = movie['id']
                popular_movies.append((title, poster_url, movie_id))
            return popular_movies
        except:
            return []

    # -------------------- التنقل في الشريط الجانبي --------------------
    st.sidebar.markdown("""
        <div style="text-align:center; color:white; font-size:30px; font-weight:bold;">
            🎞️ Movie Recommender
        </div>
        <hr style="border-color: #ecf0f1;">
    """, unsafe_allow_html=True)

    st.session_state.selected_section = st.sidebar.radio(
        "Navigate",
        ["Popular Movies", "Search & Recommend Movies", "Movie Details"]
    )

    # -------------------- الصفحة الرئيسية --------------------
    st.markdown(f"### Hello, {st.session_state.get('name', 'Guest')} 👋", unsafe_allow_html=True)

    if st.session_state.selected_section == "Popular Movies":
        with st.expander("Popular Movies", expanded=True):
            popular = fetch_popular_movies()
            if popular:
                cols = st.columns(5)
                for i, (title, poster_url, movie_id) in enumerate(popular):
                    with cols[i % 5]:
                        st.image(poster_url, use_container_width=True)
                        st.markdown(f"<div class='movie-title'>{title}</div>", unsafe_allow_html=True)

                        # استخدام session_state لتخزين حالة زر التفاصيل (مفتوح أو مغلق)
                        if f"show_details_{i}" not in st.session_state:
                            st.session_state[f"show_details_{i}"] = False

                        # زر التفاصيل
                        if st.button(" Details 📄", key=f"popular_details_{i}"):
                            # تغيير حالة الزر عند الضغط عليه
                            st.session_state[f"show_details_{i}"] = not st.session_state[f"show_details_{i}"]
                            
                            # عرض التفاصيل إذا كانت الحالة "مفتوحة"
                            if st.session_state[f"show_details_{i}"]:
                                overview, rating, release_date, genres = fetch_movie_details(movie_id)
                                st.markdown(f"**📅 Release Date:** {release_date}")
                                st.markdown(f"**⭐ Rating:** {rating}")
                                st.markdown(f"**🎭 Genres:** {genres}")
                                st.markdown(f"**📝 Overview:** {overview}")
                            else:
                                st.markdown("**Details Closed**")

            else:
                st.warning("Could not fetch popular movies.")

    elif st.session_state.selected_section == "Search & Recommend Movies":
        movie_list = movies['title'].values
        selected_movie = st.selectbox("🎥 Select a Movie", movie_list)
        rating = st.slider("⭐ Your Rating", 1, 10, 1)
        st.write(f"✅ Your rating: {rating} stars")

        if "show_recommendations" not in st.session_state:
            st.session_state.show_recommendations = False

        if st.button("🎯 Show 5 Recommendations"):
            st.session_state.show_recommendations = not st.session_state.show_recommendations

        if st.session_state.show_recommendations:
            with st.spinner("⏳ Fetching recommendations..."):
                names, posters, ids = recommend(selected_movie)
                if names:
                    st.markdown(f"### ✅ Recommended Movies Similar to {selected_movie}:")
                    cols = st.columns(5)
                    for i in range(len(names)):
                        with cols[i % 5]:
                            st.image(posters[i], use_container_width=True)
                            st.markdown(f"<div class='movie-title'>{names[i]}</div>", unsafe_allow_html=True)
                            if st.button("📄 Details", key=f"recommend_details_{i}"):
                                overview, rating, release_date, genres = fetch_movie_details(ids[i])
                                st.markdown(f"**📅 Release Date:** {release_date}")
                                st.markdown(f"**⭐ Rating:** {rating}")
                                st.markdown(f"**🎭 Genres:** {genres}")
                                st.markdown(f"**📝 Overview:** {overview}")
                else:
                    st.warning("No recommendations found.")

    elif st.session_state.selected_section == "Movie Details":
        if "show_details" not in st.session_state:
            st.session_state.show_details = {}

        movie_list = movies['title'].values
        selected_movie = st.selectbox("🎥 Select a Movie to View Details", movie_list)
        index = movies[movies['title'] == selected_movie].index[0]
        movie_id = movies.iloc[index].movie_id
        overview, rating, release_date, genres = fetch_movie_details(movie_id)

# إضافة زر لفتح أو إغلاق التفاصيل
        if selected_movie not in st.session_state.show_details:
            st.session_state.show_details[selected_movie] = True  # قيمة افتراضية للإخفاء

        if st.button(f"Show/Hide Details for {selected_movie} 📄"):
            st.session_state.show_details[selected_movie] = not st.session_state.show_details[selected_movie]

# عرض التفاصيل بناءً على حالة الزر
        if st.session_state.show_details[selected_movie]:
            st.image(fetch_poster(movie_id), use_container_width=True)
            st.markdown(f"**📅 Release Date:** {release_date}")
            st.markdown(f"**⭐ Rating:** {rating}")
            st.markdown(f"**🎭 Genres:** {genres}")
            st.markdown(f"**📝 Overview:** {overview}")
        else:
            st.markdown(f"Details for {selected_movie} are hidden. Click the button to view them.")

# -------------------- Footer --------------------
st.markdown("<hr>", unsafe_allow_html=True)
st.markdown("<div class='footer'>© 2025 • by Youssef samy • Powered by Youssef Samy API</div>", unsafe_allow_html=True)