# DROP TABLES

songplay_table_drop = "DROP TABLE IF EXISTS songplay;"
user_table_drop = "DROP TABLE IF EXISTS users;"
song_table_drop = "DROP TABLE IF EXISTS song;"
artist_table_drop = "DROP TABLE IF EXISTS artist;"
time_table_drop = "DROP TABLE IF EXISTS time;"

# CREATE TABLES
#songplays - records in log data associated with song plays
#songplay_id, start_time, user_id, level, song_id, artist_id, session_id, location, user_agent
songplay_table_create = ("""CREATE TABLE IF NOT EXISTS songplays (songplay_id SERIAL PRIMARY KEY NOT NULL,
                                                                 start_time FLOAT NOT NULL, 
                                                                 user_id INT NOT NULL, 
                                                                 level VARCHAR NOT NULL, 
                                                                 song_id VARCHAR, 
                                                                 artist_id VARCHAR, 
                                                                 session_id INT, 
                                                                 location VARCHAR NOT NULL, 
                                                                 user_agent VARCHAR);""")

#user_id, first_name, last_name, gender, level
user_table_create = ("""CREATE TABLE IF NOT EXISTS users (user_id int PRIMARY KEY NOT NULL, 
                                                         first_name VARCHAR, 
                                                         last_name VARCHAR, 
                                                         gender VARCHAR, 
                                                         level VARCHAR);""")

#song_id, title, artist_id, year, duration
song_table_create = ("""CREATE TABLE IF NOT EXISTS songs  (song_id VARCHAR PRIMARY KEY NOT NULL, 
                                                         title VARCHAR, 
                                                         artist_id VARCHAR, 
                                                         year INT, 
                                                         duration FLOAT)""")

#artist_id, name, location, lattitude, longitude
artist_table_create = ("""CREATE TABLE IF NOT EXISTS artists (artist_id VARCHAR PRIMARY KEY NOT NULL,
                                                             name VARCHAR,
                                                             location VARCHAR,
                                                             lattitude FLOAT,
                                                             longitude FLOAT)""")

#start_time, hour, day, week, month, year, weekday
time_table_create = ("""CREATE TABLE IF NOT EXISTS time (start_time BIGINT PRIMARY KEY NOT NULL,
                                                       hour INT,
                                                       day INT,
                                                       week INT,
                                                       month INT,
                                                       year INT,
                                                       weekday INT)""")


# INSERT RECORDS

#songplay_id, start_time, user_id, level, song_id, artist_id, session_id, location, user_agent
songplay_table_insert = ("""INSERT INTO songplays (start_time, user_id, level, song_id, artist_id, session_id, location, user_agent)
                            VALUES (%s, %s, %s, %s, %s, %s, %s, %s)""")

user_table_insert = ("""INSERT INTO users (user_id, first_name, last_name, gender, level) VALUES (%s, %s, %s, %s, %s)
                        ON CONFLICT (user_id) 
                        DO UPDATE
                        SET level = EXCLUDED.level; """)

song_table_insert = ("""INSERT INTO songs (song_id, title, artist_id, year, duration) VALUES (%s, %s, %s, %s, %s) 
                        ON CONFLICT (song_id) 
                        DO NOTHING; """)

artist_table_insert = ("""INSERT INTO artists (artist_id, name, location, lattitude, longitude) VALUES (%s, %s, %s, %s, %s)
                        ON CONFLICT (artist_id) 
                        DO NOTHING;""")

time_table_insert = ("""INSERT INTO time (start_time, hour, day, week, month, year, weekday) VALUES (%s, %s, %s, %s, %s, %s, %s)
                        ON CONFLICT (start_time) 
                        DO NOTHING;""")

# FIND SONGS

song_select = ("""SELECT songs.song_id, artists.artist_id \
                  FROM songs \
                  JOIN artists on songs.artist_id = artists.artist_id
                  WHERE (songs.title = %s AND artists.name = %s AND songs.duration = %s)""")

# QUERY LISTS

create_table_queries = [songplay_table_create, user_table_create, song_table_create, artist_table_create, time_table_create]
drop_table_queries = [songplay_table_drop, user_table_drop, song_table_drop, artist_table_drop, time_table_drop]

