# Copyright 2021 (c) Anna Schumaker.
#
# Table: artists
# +----------+------+------+
# | artistid | name | sort |
# +----------+------+------+
#
# Index: artist_index
# +------------------+
# | name -> artistid |
# +------------------+
from . import album
from . import execute
from . import objects

class Artist(objects.Tag):
    def do_get_column(self, column):
        return execute(f"SELECT {column} FROM artists "
                        "WHERE artistid=?", [ self.rowid ])

    def albums(self):
        cursor = execute(f"SELECT albumid FROM albums "
                          "WHERE artistid=?", [ self.rowid ])
        return [ album.Album(row["albumid"]) for row in cursor.fetchall() ]


class ArtistTable(objects.Table):
    def __init__(self):
        objects.Table.__init__(self, "artists", Artist)

    def do_create(self):
        execute("CREATE TABLE IF NOT EXISTS artists "
                    "(artistid INTEGER PRIMARY KEY, "
                    " name TEXT UNIQUE, "
                    " sort TEXT)")
        execute("CREATE INDEX IF NOT EXISTS artist_index "
                "ON artists(name)")

    def do_insert(self, name, sort):
        return execute("INSERT INTO artists (name, sort) "
                       "VALUES (?, ?)", (name, sort.casefold()))

    def do_delete(self, artist):
        return execute("DELETE FROM artists WHERE artistid=?", [ int(artist) ])

    def do_get(self, rowid):
        return execute("SELECT artistid FROM artists "
                       "WHERE artistid=?", [ rowid ])

    def do_lookup(self, name, sort=None):
        return execute("SELECT artistid FROM artists "
                       "WHERE name=?", [ name ])


Table = ArtistTable()