-- Payments table
CREATE TABLE payments (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    order_id UUID NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
    payment_method_id UUID NOT NULL REFERENCES payment_methods(id) ON DELETE RESTRICT,
    amount DECIMAL(10,2) NOT NULL CHECK (amount >= 0),
    status VARCHAR(50) DEFAULT 'pending' CHECK (status IN ('pending', 'completed', 'failed', 'refunded')),
    transaction_id VARCHAR(255),
    metadata JSONB DEFAULT '{}',
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- Indexes
CREATE INDEX idx_payments_order_id ON payments(order_id);
CREATE INDEX idx_payments_payment_method_id ON payments(payment_method_id);
CREATE INDEX idx_payments_status ON payments(status);
CREATE INDEX idx_payments_transaction_id ON payments(transaction_id);
CREATE INDEX idx_payments_created_at ON payments(created_at);