update: lifetime discounts based on spent

2026-03-22 06:11:49 +04:00
parent b014cbf98a
commit a1d37c6215
3 changed files with 26 additions and 3 deletions
@@ -74,7 +74,14 @@ export const routes = new Elysia()
    // Calculate amount
    const planDef = PLANS[plan];
    if (!planDef) { set.status = 400; return { error: `Unknown plan: ${plan}` }; }
-    const amountUsd = planDef.priceUsd ?? (planDef.monthlyUsd! * (months ?? 1));
+    let amountUsd = planDef.priceUsd ?? (planDef.monthlyUsd! * (months ?? 1));
+
+    // Lifetime discount: credit up to 50% of lifetime price from previous payments
+    if (plan === "lifetime" && planDef.priceUsd) {
+      const [{ total }] = await sql`SELECT COALESCE(SUM(amount_usd), 0)::numeric as total FROM payments WHERE account_id = ${accountId} AND status = 'paid'`;
+      const credit = Math.min(Number(total), planDef.priceUsd * 0.5);
+      amountUsd = Math.max(amountUsd - credit, 1);
+    }
    const rates = await getExchangeRates();
    const rate = rates[coin];
    if (!rate) { set.status = 500; return { error: "Could not fetch exchange rate" }; }