# DROP TABLES

songplay_table_drop = "DROP TABLE IF EXISTS songplays"
user_table_drop = "DROP TABLE IF EXISTS users"
song_table_drop = "DROP TABLE IF EXISTS songs"
artist_table_drop = "DROP TABLE IF EXISTS artists"
time_table_drop = "DROP TABLE IF EXISTS time"

# CREATE TABLES

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

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

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

time_table_create = ("""
CREATE TABLE IF NOT EXISTS time (start_time TIME(6) PRIMARY KEY, hour INT, day INT, week INT, month INT, year INT, weekday VARCHAR)
""")

songplay_table_create = ("""CREATE TABLE IF NOT EXISTS songplays 
(songplay_id SERIAL PRIMARY KEY, start_time TIME(6) NOT NULL REFERENCES time(start_time), user_id INT NOT NULL REFERENCES users(user_id), level VARCHAR, song_id VARCHAR REFERENCES songs(song_id), artist_id VARCHAR REFERENCES artists(artist_id), session_id INT NOT NULL, location VARCHAR, user_agent VARCHAR)
""")

# INSERT RECORDS

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, latitude, 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 s.song_id, a.artist_id 
FROM songs s
    JOIN artists a ON a.artist_id = s.artist_id
WHERE s.title = %s AND a.name = %s AND s.duration = %s
""")


# QUERY LISTS

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