# 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

songplay_table_create = ("""
    CREATE TABLE songplays (
        songplay_id serial PRIMARY KEY, 
        start_time TIMESTAMP, 
        user_id VARCHAR NOT NULL, 
        level VARCHAR, 
        song_id VARCHAR , 
        artist_id VARCHAR , 
        session_id INTEGER NOT NULL, 
        location VARCHAR, 
        user_agent VARCHAR
    )
""")

user_table_create = ("""
    CREATE TABLE users (
        user_id VARCHAR PRIMARY KEY, 
        first_name VARCHAR, 
        last_name VARCHAR, 
        gender VARCHAR, 
        level VARCHAR
    )
""")

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

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

""")

time_table_create = ("""
    CREATE TABLE time (
        start_time TIMESTAMP PRIMARY KEY, 
        hour INTEGER, 
        day INTEGER, 
        week INTEGER, 
        month INTEGER, 
        year INTEGER, 
        weekday INTEGER
    )

""")

# 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 as s
    JOIN artists as a
    ON (s.artist_id = a.artist_id)  
    WHERE 
        s.title = (%s) 
        AND 
        a.name = (%s) 
        AND
        s.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]