-- EnakGame events, also called campaigns (docs/rfc-enakgame.md §5.5, D6): a period in
-- which some games pay more, the extra paid by the event's own budget.
CREATE TABLE game_events (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    organization_id UUID NOT NULL,
    name VARCHAR(255) NOT NULL,
    slug VARCHAR(100) NOT NULL,
    description TEXT,
    banner_url VARCHAR(500),
    start_at TIMESTAMP WITH TIME ZONE NOT NULL,
    end_at TIMESTAMP WITH TIME ZONE NOT NULL,
    -- Shown with the dates; start_at and end_at are instants already.
    timezone VARCHAR(50) NOT NULL DEFAULT 'Asia/Jakarta',
    status VARCHAR(20) NOT NULL DEFAULT 'DRAFT',
    -- Higher goes first; when the reward cap cuts, the lowest goes first.
    priority INT NOT NULL DEFAULT 0,
    -- Applied to the base reward: 2.00 adds the base once more.
    multiplier NUMERIC(5,2),
    -- Added on top, per completed session.
    bonus BIGINT,
    -- Pays what this event adds. A budget of scope EVENT, checked by the processor.
    budget_id UUID NOT NULL REFERENCES game_budgets(id),
    -- EnakCoin this event may add over its whole run (PRD §35 Event Limit).
    reward_limit BIGINT,
    -- EnakCoin this event may add for one customer per day.
    user_daily_limit BIGINT,
    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),

    CONSTRAINT uq_game_events_slug UNIQUE (organization_id, slug),
    CONSTRAINT chk_game_events_period CHECK (end_at > start_at),
    CONSTRAINT chk_game_events_status CHECK (status IN ('DRAFT', 'ACTIVE', 'ENDED', 'CANCELLED')),
    CONSTRAINT chk_game_events_multiplier CHECK (multiplier IS NULL OR multiplier > 0),
    CONSTRAINT chk_game_events_bonus CHECK (bonus IS NULL OR bonus > 0),
    CONSTRAINT chk_game_events_reward_limit CHECK (reward_limit IS NULL OR reward_limit > 0),
    CONSTRAINT chk_game_events_user_daily_limit CHECK (user_daily_limit IS NULL OR user_daily_limit > 0)
);

CREATE INDEX idx_game_events_org_active ON game_events(organization_id, start_at, end_at) WHERE status = 'ACTIVE';

CREATE TABLE game_event_games (
    event_id UUID NOT NULL REFERENCES game_events(id) ON DELETE CASCADE,
    game_id UUID NOT NULL REFERENCES games(id) ON DELETE RESTRICT,
    PRIMARY KEY (event_id, game_id)
);

CREATE INDEX idx_game_event_games_game ON game_event_games(game_id);