Add gross monthly and yearly plan pricing

database/migrations/003_instance_billing.sql

@@ -0,0 +1,4 @@
+-- Add billing period and gross price snapshot to existing instances.
+ALTER TABLE instances
+    ADD COLUMN IF NOT EXISTS billing_period ENUM('monthly', 'yearly') NOT NULL DEFAULT 'monthly' AFTER plan,
+    ADD COLUMN IF NOT EXISTS price_gross_cents INT UNSIGNED NOT NULL DEFAULT 0 AFTER billing_period;

database/schema.sql

@@ -72,6 +72,8 @@ CREATE TABLE IF NOT EXISTS instances (
     owner_user_id BIGINT UNSIGNED NOT NULL,
     name VARCHAR(120) NOT NULL,
     plan ENUM('s', 'm', 'l') NOT NULL DEFAULT 's',
+    billing_period ENUM('monthly', 'yearly') NOT NULL DEFAULT 'monthly',
+    price_gross_cents INT UNSIGNED NOT NULL DEFAULT 0,
     payment_status ENUM('pending', 'paid', 'rejected') NOT NULL DEFAULT 'pending',
     payment_method ENUM('paypal', 'bank_transfer', 'manual') NULL,
     requested_at TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP,