CREATE TABLE IF NOT EXISTS tournament_registrations (
    id SERIAL PRIMARY KEY,
    tournament_id INTEGER NOT NULL REFERENCES tournament_info(id) ON DELETE CASCADE,
    entry_label TEXT,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS tournament_registration_values (
    registration_id INTEGER NOT NULL REFERENCES tournament_registrations(id) ON DELETE CASCADE,
    signup_field_id INTEGER NOT NULL REFERENCES tournament_signup_fields(id) ON DELETE CASCADE,
    value TEXT NOT NULL,
    PRIMARY KEY (registration_id, signup_field_id)
);

CREATE TABLE IF NOT EXISTS tournament_participants (
    id SERIAL PRIMARY KEY,
    registration_id INTEGER NOT NULL REFERENCES tournament_registrations(id) ON DELETE CASCADE,
    position INTEGER NOT NULL DEFAULT 0
);

CREATE TABLE IF NOT EXISTS tournament_participant_values (
    participant_id INTEGER NOT NULL REFERENCES tournament_participants(id) ON DELETE CASCADE,
    signup_field_id INTEGER NOT NULL REFERENCES tournament_signup_fields(id) ON DELETE CASCADE,
    value TEXT NOT NULL,
    PRIMARY KEY (participant_id, signup_field_id)
);

CREATE INDEX IF NOT EXISTS idx_tournament_registrations_tournament
    ON tournament_registrations (tournament_id, created_at DESC, id DESC);

CREATE INDEX IF NOT EXISTS idx_tournament_participants_registration
    ON tournament_participants (registration_id, position, id);