CREATE TABLE IF NOT EXISTS notifications (
    id VARCHAR(255) NOT NULL PRIMARY KEY,
    recipient_id BIGSERIAL NOT NULL,
    type TEXT NOT NULL CHECK (
        type IN (
            'cash_out_success',
            'deposit_success',
            'withdraw_success',
            'bet_placed',
            'daily_report',
            'high_loss_on_bet',
            'bet_overload',
            'signup_welcome',
            'otp_sent',
            'wallet_threshold',
            'wallet_updated',
            'transfer_failed',
            'transfer_success',
            'admin_alert',
            'bet_result',
            'transfer_rejected',
            'approval_required',
            'bonus_awarded'
        )
    ),
    level TEXT NOT NULL CHECK (level IN ('info', 'error', 'warning', 'success')),
    error_severity TEXT CHECK (
        error_severity IN ('low', 'medium', 'high', 'critical', 'fatal')
    ),
    reciever TEXT NOT NULL CHECK (reciever IN ('admin', 'customer')),
    is_read BOOLEAN NOT NULL DEFAULT FALSE,
    delivery_status TEXT NOT NULL CHECK (delivery_status IN ('pending', 'sent', 'failed')),
    delivery_channel TEXT CHECK (
        delivery_channel IN ('email', 'sms', 'push', 'in-app')
    ),
    payload JSONB NOT NULL,
    priority INTEGER,
    version INTEGER NOT NULL DEFAULT 0,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    metadata JSONB
);
CREATE TABLE IF NOT EXISTS wallet_threshold_notifications (
    company_id BIGINT NOT NULL,
    threshold FLOAT NOT NULL,
    notified_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (company_id, threshold)
);
CREATE INDEX idx_wallet_threshold_notifications_company ON wallet_threshold_notifications(company_id);
CREATE INDEX idx_notifications_recipient_id ON notifications (recipient_id);
CREATE INDEX idx_notifications_timestamp ON notifications (timestamp);
CREATE INDEX idx_notifications_type ON notifications (type);