import flask
import sqlite3

app = flask.Flask('songbook')

@app.route('/song/<int:id>')
def songpage(id):
    
    db = sqlite3.connect("file:songbook.sqlite?mode=ro", uri=True)

    # query song name

    name, = db.execute('''
    select
        name
    from
        song
    where
        id = ?
    ''',
    (id,)
    ).fetchone()
    
    # query album info
    
    album_info = db.execute('''
    select
        track, album.name, album.code
    from 
        song_album
    join
        album
    on
        song_album.album_id=album.id
    where
        song_id = ?
    ''',
    (id,)
    ).fetchall()

    # query artist info

    artist_info = db.execute('''
    select
        artist.name, artist.name_rm, credit.name
    from
        song_artist
    join
        artist
    on
        song_artist.artist_id=artist.id
    join
        credit
    on
        song_artist.credit_id=credit.id
    where
        song_id = ?
    ''',
    (id,)
    ).fetchall()

    # query clip info

    clip_info = db.execute('''
    select
        song_id, motif_id, motif.name
    from
        clip
    join
        motif
    on
        clip.motif_id=motif.id
    where
        song_id = ?
    ''',
    (id,)
    ).fetchall()

    return flask.render_template('song.jinja',
        name=name,
        id=id,
        album_info=album_info,
        clip_info=clip_info,
        artist_info=artist_info
    )