from flask import Flask, render_template, request, url_for, redirect
import time
import requests
from urllib.parse import urlencode
import webbrowser
import base64
import json
import os

app = Flask(__name__)


client_id = '1cb8bc27872c4bcaaad0e95f123b4f7d'
client_secret = '9893dfb6d9eb43eebf082f9173ce937c'
redirect_uri = 'http://127.0.0.1:8888/callback'
encoded_creds = base64.b64encode(client_id.encode() + b':' + client_secret.encode()).decode("utf-8")


headers = {
    "client_id": client_id,
    "response_type": "code",
    "redirect_uri": redirect_uri,
    "scope": "user-read-playback-state,user-modify-playback-state,user-library-read,user-library-modify"
}

token_headers = {
    "Authorization": "Basic " + encoded_creds,
    "Content-Type": "application/x-www-form-urlencoded"
}

song_info = {
    'name': "None",
    'artist': "None",
    'album': "None",
    'image': "None"
}

@app.route('/')
def index():
    global code
    if os.path.exists('code'):
        with open('code', 'r') as file:
            code = file.read()
            return redirect(url_for('webapp'))
    else:
        return redirect("https://accounts.spotify.com/authorize?" + urlencode(headers))
    # return render_template('index.html')

# @app.route('/update')
# def update():
#     # Generate new information
#     new_info = generate_new_info()

#     # Wait for 1 second
#     time.sleep(1)

#     return new_info

@app.route('/webapp', methods=['GET', 'POST'])
def webapp():
    global access_token
    # NEED TO FIND A BETTER WAY THAT DOESN'T INVOLVE A TRY EXCEPT BLOCK
    if 'code' not in globals() or not code:
        return redirect(url_for('index'))
    token_data = {
        "grant_type": "authorization_code",
        "code": code,
        "redirect_uri": redirect_uri
    }

    access_object = requests.post("https://accounts.spotify.com/api/token", data=token_data, headers=token_headers)
    if "error" in access_object.json():
        if os.path.exists('code'):
            os.remove('code')
        return redirect(url_for('index'))
    access_token = access_object.json()["access_token"]

    return render_template('webapp.html', song_info=song_info)

@app.route('/callback', methods=['GET'])
def callback():
    global code
    code = request.args.get('code')
    with open('code', 'w') as file:
        file.write(code)
    return redirect(url_for('webapp'))

@app.route('/appdata')
def appdata():
    global access_token
    user_headers = {
        "Authorization": "Bearer " + access_token,
        "Content-Type": "application/json"
    }

    currently_playing = requests.get("https://api.spotify.com/v1/me/player/currently-playing", headers=user_headers)
    

    if currently_playing.json()["is_playing"] == True:
        return { 'id': currently_playing.json()["item"]["id"],
                'name': currently_playing.json()["item"]["name"],
                'artist': currently_playing.json()["item"]["artists"][0]["name"],
                'album': currently_playing.json()["item"]["album"]["name"],
                'image': currently_playing.json()["item"]["album"]["images"][0]["url"],
                'is_playing': currently_playing.json()["is_playing"],
                'progress_ms': currently_playing.json()["progress_ms"],
                'duration_ms': currently_playing.json()["item"]["duration_ms"],
                'is_liked': requests.get("https://api.spotify.com/v1/me/tracks/contains?ids=" + currently_playing.json()["item"]["id"], headers=user_headers).json()[0]
                }
    elif currently_playing.json()["is_playing"] == False:
        return { 'name': "Not Playing",
                'artist': "Not Playing",
                'album': "Not Playing",
                'image': "Not Playing"
                }
    else:
        return { 'name': "Error",
                'artist': "Error",  
                'album': "Error",
                'image': "Error"
                }

@app.route('/control', methods=['POST'])
def control():
    global access_token
    user_headers = {
        "Authorization": "Bearer " + access_token,
        "Content-Type": "application/json"
    }

    if request.form.get('command') == "pause":
        requests.put("https://api.spotify.com/v1/me/player/pause", headers=user_headers)
    elif request.form.get('command') == "play":
        requests.put("https://api.spotify.com/v1/me/player/play", headers=user_headers)
    elif request.form.get('command') == "next":
        requests.post("https://api.spotify.com/v1/me/player/next", headers=user_headers)
    elif request.form.get('command') == "previous":
        requests.post("https://api.spotify.com/v1/me/player/previous", headers=user_headers)
    elif request.form.get('command') == "restart":
        requests.put("https://api.spotify.com/v1/me/player/seek?position_ms=0", headers=user_headers)
    elif request.form.get('command') == "like":
        requests.put("https://api.spotify.com/v1/me/tracks?ids=" + request.form.get('id'), headers=user_headers)
    elif request.form.get('command') == "unlike":
        requests.delete("https://api.spotify.com/v1/me/tracks?ids=" + request.form.get('id'), headers=user_headers)

    print(request.form.get('command'))
    return ('', 204)

if __name__ == '__main__':
    app.run(port=8888, debug=True)