CREATE TABLE artists (
    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    original_name TEXT NOT NULL,
    display_name TEXT NOT NULL,
    UNIQUE (original_name)
);

CREATE TABLE collections (
    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    artist_id INTEGER,
    collection_type TEXT NOT NULL,
    original_name TEXT NOT NULL,
    display_name TEXT NOT NULL,
    UNIQUE (original_name),
    CONSTRAINT fk_collections_artist
        FOREIGN KEY (artist_id)
        REFERENCES artists (id)
);

CREATE TABLE tracks (
    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
    file_path TEXT NOT NULL,
    artist_id INTEGER,
    collection_id INTEGER,
    original_title TEXT,
    display_title TEXT,
    track_number INTEGER,
    genre TEXT,
    track_datetime TEXT,
    length_sec INTEGER NOT NULL,
    CONSTRAINT fk_tracks_artist
        FOREIGN KEY (artist_id)
        REFERENCES artists (id),
    CONSTRAINT fk_tracks_collection
        FOREIGN KEY (collection_id)
        REFERENCES collections (id)
);