import streamlit as st
import re
import os
import glob

# Set Streamlit page configuration to wide mode
st.set_page_config(layout="wide")

# Function to process each line of the chord sheet
def process_line(line):
    if re.search(r'\b[A-G][#b]?m?\b', line):
        line = re.sub(r'\b([A-G][#b]?m?)\b', r"<img src='\1.png' style='height:20px;'>", line)
    return line

# Function to process the entire chord sheet
def process_chord_sheet(chord_sheet):
    processed_lines = []
    for line in chord_sheet.split('\n'):
        processed_line = process_line(line)
        processed_lines.append(processed_line)
    return '<br>'.join(processed_lines)

# Functions to create search URLs
def create_search_url_wikipedia(artist_song):
    base_url = "https://www.wikipedia.org/search-redirect.php?family=wikipedia&language=en&search="
    return base_url + artist_song.replace(' ', '+').replace('–', '%E2%80%93').replace('&', 'and')

def create_search_url_youtube(artist_song):
    base_url = "https://www.youtube.com/results?search_query="
    return base_url + artist_song.replace(' ', '+').replace('–', '%E2%80%93').replace('&', 'and')

def create_search_url_chords(artist_song):
    base_url = "https://www.ultimate-guitar.com/search.php?search_type=title&value="
    return base_url + artist_song.replace(' ', '+').replace('–', '%E2%80%93').replace('&', 'and')

def create_search_url_lyrics(artist_song):
    base_url = "https://www.google.com/search?q="
    return base_url + artist_song.replace(' ', '+').replace('–', '%E2%80%93').replace('&', 'and') + '+lyrics'

# Streamlit app
def main():
    # Sidebar with file loader
    with st.sidebar:
        st.title('🎵 Song Files')
        with st.expander("Select Song File"):
            all_files = glob.glob("*.txt")
            selected_file = st.selectbox("Choose a file", all_files)

    # Main area layout
    col1, col2 = st.columns([2, 1])

    with col1:
        with st.expander("🎶 Song and Artist"):
            song_name = st.text_input("🎵 Song Name")
            artist_name = st.text_input("🎤 Artist Name")
            chord_sheet_input = st.text_area("Chord Sheet", height=300)
            if st.button("💾 Save", key="save_song"):
                if song_name and artist_name:
                    filename = f"{song_name} by {artist_name}.txt".replace(" ", "_")
                    with open(filename, "w") as file:
                        file.write(chord_sheet_input)
                    st.success("Chord sheet saved.")
                else:
                    st.error("Both Song Name and Artist Name are required.")

    with col2:
        if selected_file:
            song_name_artist = os.path.splitext(selected_file)[0].replace("_", " ")
            st.markdown(f"**Selected Song:** {song_name_artist}")
            st.markdown(f"[📚Wikipedia]({create_search_url_wikipedia(song_name_artist)})")
            st.markdown(f"[🎥YouTube]({create_search_url_youtube(song_name_artist)})")
            st.markdown(f"[🎸Chords]({create_search_url_chords(song_name_artist)})")
            st.markdown(f"[🎶Lyrics]({create_search_url_lyrics(song_name_artist)})")
            load_song_file(selected_file)

    # Displaying song files
    st.header("🎼 Available Songs")
    for file in all_files:
        song_info = os.path.splitext(file)[0].replace("_", " ")
        col1, col2, col3, col4, col5 = st.columns([4, 1, 1, 1, 1])
        with col1:
            st.markdown(f"* {song_info}")
        with col2:
            st.markdown(f"[📚Wikipedia]({create_search_url_wikipedia(song_info)})")
        with col3:
            st.markdown(f"[🎥YouTube]({create_search_url_youtube(song_info)})")
        with col4:
            st.markdown(f"[🎸Chords]({create_search_url_chords(song_info)})")
        with col5:
            st.markdown(f"[🎶Lyrics]({create_search_url_lyrics(song_info)})")

# Function to load and display the selected song file
def load_song_file(filename):
    with open(filename, "r") as file:
        chord_sheet = file.read()
    st.text_area("Chord Sheet", chord_sheet, height=300)
    processed_sheet = process_chord_sheet(chord_sheet)
    st.markdown(processed_sheet, unsafe_allow_html=True)

if __name__ == '__main__':
    main()