-- Payments table for tracking all payment transactions
CREATE TABLE payments (
    id BIGSERIAL PRIMARY KEY,
    user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    plan_id BIGINT REFERENCES subscription_plans(id) ON DELETE SET NULL,
    subscription_id BIGINT REFERENCES user_subscriptions(id) ON DELETE SET NULL,
    
    -- ArifPay specific fields
    session_id VARCHAR(100),
    transaction_id VARCHAR(100),
    nonce VARCHAR(255) NOT NULL UNIQUE,
    
    -- Payment details
    amount DECIMAL(10, 2) NOT NULL,
    currency VARCHAR(3) NOT NULL DEFAULT 'ETB',
    payment_method VARCHAR(50),
    
    -- Status tracking
    status VARCHAR(20) NOT NULL DEFAULT 'PENDING' CHECK (status IN ('PENDING', 'PROCESSING', 'SUCCESS', 'FAILED', 'CANCELLED', 'EXPIRED')),
    
    -- URLs for redirect
    payment_url TEXT,
    
    -- Timestamps
    paid_at TIMESTAMPTZ,
    expires_at TIMESTAMPTZ,
    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMPTZ
);

CREATE INDEX idx_payments_user_id ON payments(user_id);
CREATE INDEX idx_payments_session_id ON payments(session_id);
CREATE INDEX idx_payments_nonce ON payments(nonce);
CREATE INDEX idx_payments_status ON payments(status);
CREATE INDEX idx_payments_subscription_id ON payments(subscription_id);