# 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 IF NOT EXISTS
    songplays (songplay_id serial NOT NULL PRIMARY KEY, start_time timestamp NOT NULL, user_id varchar NOT NULL, 
    level varchar, song_id varchar NOT NULL, artist_id varchar NOT NULL, session_id int, 
    location varchar, user_agent varchar);
    """

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

song_table_create = """
    CREATE TABLE IF NOT EXISTS
    songs (song_id varchar NOT NULL PRIMARY KEY, title varchar NOT NULL, artist_id varchar NOT NULL,
    year int, duration numeric);
    """

artist_table_create = """
    CREATE TABLE IF NOT EXISTS
    artists (artist_id varchar NOT NULL PRIMARY KEY, name varchar NOT NULL, 
    location varchar, latitude numeric, longitude numeric);
    """

time_table_create = """
    CREATE TABLE IF NOT EXISTS
    time (start_time timestamp NOT NULL PRIMARY KEY, hour int, day int, 
    week int, month int, year int, weekday int);
    """

# INSERT RECORDS

songplay_table_insert = """
       INSERT INTO songplays (songplay_id, start_time, user_id, 
       level, song_id, artist_id, session_id, location, user_agent) \
       VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)
       ON CONFLICT DO NOTHING
       """

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 DO NOTHING
       """

artist_table_insert = """
      INSERT INTO artists (artist_id, name, location, latitude, longitude) \
      VALUES (%s, %s, %s, %s, %s)
      ON CONFLICT 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 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]
