app.py

import numpy as np
import pandas as pd
import flask
import dash
from flask import Flask, render_template, request
from sklearn.feature_extraction.text import CountVectorizer
from sklearn.metrics.pairwise import cosine_similarity
import json
import bs4 as bs
import urllib.request
import pickle
import requests

def create_similarity():
    data = pd.read_csv('movies_df.csv')
    # creating a count matrix
    cv = CountVectorizer()
    count_matrix = cv.fit_transform(data['tags'].astype('U'))
    # creating a similarity score matrix
    similarity = cosine_similarity(count_matrix)
    return data,similarity

def rcmd(m):
    m = m.lower()
    data, similarity = create_similarity()
        
    if m not in data['movie_title'].unique():
        return('Sorry! The movie you requested is not in our database. Please check the spelling or try with some other movies')
    else:
        i = data.loc[data['movie_title']==m].index[0]
        lst = list(enumerate(similarity[i]))
        lst = sorted(lst, key = lambda x:x[1] ,reverse=True)
        lst = lst[1:11] # excluding first item since it is the requested movie itself
        l = []
        for i in range(len(lst)):
            a = lst[i][0]
            l.append(data['movie_title'][a])
        return l

    my_list = my_list.split('","')
    my_list[0] = my_list[0].replace('["','')
    my_list[-1] = my_list[-1].replace('"]','')
    return my_list

def get_suggestions():
    data = pd.read_csv('movies_df.csv')
    return list(data['movie_title'].str.capitalize())

app = Flask(__name__)

@app.route("/")
@app.route("/home")
def home():
    suggestions = get_suggestions()
    return render_template('home.html',suggestions=suggestions)

@app.route("/similarity",methods=["POST"])
def similarity():
    movie = request.form['name']
    rc = rcmd(movie)
    if type(rc)==type('string'):
        return rc
    else:
        m_str="---".join(rc)
        return m_str

@app.route("/recommend",methods=["POST"])
def recommend():
    # getting data from AJAX request
    title = request.form['title']
    cast_ids = request.form['cast_ids']
    cast_names = request.form['cast_names']
    cast_chars = request.form['cast_chars']
    cast_bdays = request.form['cast_bdays']
    cast_bios = request.form['cast_bios']
    cast_places = request.form['cast_places']
    cast_profiles = request.form['cast_profiles']
    imdb_id = request.form['imdb_id']
    poster = request.form['poster']
    genres = request.form['genres']
    overview = request.form['overview']
    vote_average = request.form['rating']
    vote_count = request.form['vote_count']
    release_date = request.form['release_date']
    runtime = request.form['runtime']
    status = request.form['status']
    rec_movies = request.form['rec_movies']
    rec_posters = request.form['rec_posters']

    # get movie suggestions for auto complete
    suggestions = get_suggestions()
    def convert_to_list(my_list):
        my_list = my_list.split('","')
        my_list[0] = my_list[0].replace('["','')
        my_list[-1] = my_list[-1].replace('"]','')
        return my_list

    # call the convert_to_list function for every string that needs to be converted to list
    rec_movies = convert_to_list(rec_movies)
    rec_posters = convert_to_list(rec_posters)
    cast_names = convert_to_list(cast_names)
    cast_chars = convert_to_list(cast_chars)
    cast_profiles = convert_to_list(cast_profiles)
    cast_bdays = convert_to_list(cast_bdays)
    cast_bios = convert_to_list(cast_bios)
    cast_places = convert_to_list(cast_places)
    
    # convert string to list (eg. "[1,2,3]" to [1,2,3])
    cast_ids = cast_ids.split(',')
    cast_ids[0] = cast_ids[0].replace("[","")
    cast_ids[-1] = cast_ids[-1].replace("]","")
    
    # rendering the string to python string
    for i in range(len(cast_bios)):
        cast_bios[i] = cast_bios[i].replace(r'\n', '\n').replace(r'\"','\"')
    
    # combining multiple lists as a dictionary which can be passed to the html file so that it can be processed easily and the order of information will be preserved
    movie_cards = {rec_posters[i]: rec_movies[i] for i in range(len(rec_posters))}
    
    casts = {cast_names[i]:[cast_ids[i], cast_chars[i], cast_profiles[i]] for i in range(len(cast_profiles))}

    cast_details = {cast_names[i]:[cast_ids[i], cast_profiles[i], cast_bdays[i], cast_places[i], cast_bios[i]] for i in range(len(cast_places))}

    

    # passing all the data to the html file
    return render_template('recommend.html',title=title,poster=poster,overview=overview,vote_average=vote_average,
        vote_count=vote_count,release_date=release_date,runtime=runtime,status=status,genres=genres,
        movie_cards=movie_cards,casts=casts,cast_details=cast_details)

server = flask.Flask(__name__)
app = dash.Dash(external_stylesheets=[dbc.themes.BOOTSTRAP], server=server)