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rate_to_movies.py
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rate_to_movies.py
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import re
import hashlib
import uuid
from connection import connection
from errors import MovieNameDoesNotExist, InvalidArguments
cursor = connection.cursor()
class MovieRate:
def __init__(self):
pass
@staticmethod
def rate_to_movie(user_id):
"""this function for add rate to movie"""
rate = input("Enter your rate: ")
valid_rates = ["1", "2", "3", "4", "5"]
while rate not in valid_rates:
print("Rate should be from 1 to 5")
rate = input("Enter your rate: ")
movie_name = input("Enter name of movie: ")
while movie_name == "" or movie_name is None:
movie_name = input("Enter name of movie: ")
cursor.execute(f"SELECT id FROM Movie WHERE name='{movie_name}'")
result = cursor.fetchone()
while result is None:
print("Movie doesn't exist")
movie_name = input("Enter name of movie: ")
while movie_name == "" or movie_name is None:
movie_name = input("Enter name of movie: ")
cursor.execute(f"SELECT id FROM Movie WHERE name='{movie_name}'")
result = cursor.fetchone()
movie_id = result[0]
# check if user rated this movie before #TODO
cursor.execute(
f"SELECT 1 FROM MovieRateTable WHERE movie_id='{movie_id}' AND user_id='{user_id}'"
)
if cursor.fetchone(): # user rate movie exists
print("You have already rated this movie")
return
cursor.execute(
f"INSERT INTO MovieRateTable(rate, movie_id, user_id)"
f"VALUES ('{rate}', '{movie_id}', '{user_id}')"
)
# update movie average rate:
cursor.execute(f"""SELECT AVG(rate) FROM MovieRateTable WHERE movie_id='{movie_id}'""")
new_avg = cursor.fetchone()[0]
cursor.execute(
f"""UPDATE Movie SET average_rate = {new_avg} WHERE id='{movie_id}'"""
)
print("your rate added")
connection.commit()
if __name__ == "__main__":
mr = MovieRate()
MovieRate.rate_to_movie("22e0ea34-a5d8-49d6-9e6a-06c1ee927475")