CREATE TABLE IF NOT EXISTS questions (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    type TEXT NOT NULL,
    question_text TEXT NOT NULL,
    payload TEXT NOT NULL,
    active BOOLEAN DEFAULT 1,
    last_asked_at DATETIME,
    streak INTEGER DEFAULT 0,
    times_asked INTEGER DEFAULT 0,
    times_correct INTEGER DEFAULT 0,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS tags (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT UNIQUE NOT NULL
);

CREATE TABLE IF NOT EXISTS question_tags (
    question_id INTEGER REFERENCES questions(id) ON DELETE CASCADE,
    tag_id INTEGER REFERENCES tags(id) ON DELETE CASCADE,
    PRIMARY KEY (question_id, tag_id)
);