feat(payment): sync plans and add coins rules

src/data/dto/payment/__tests__/payment_plan.test.ts

@@ -0,0 +1,76 @@
+import { describe, expect, it } from "vitest";
+import { z } from "zod";
+
+import { PaymentPlan, PaymentPlansResponse } from "@/data/dto/payment";
+
+describe("PaymentPlan", () => {
+  it("parses the camelCase payment plan shape", () => {
+    const plan = PaymentPlan.from({
+      planId: "vip_monthly",
+      planName: "VIP Monthly",
+      orderType: "vip_monthly",
+      vipDays: 30,
+      dolAmount: null,
+      creditBalance: 3000,
+      amountCents: 1999,
+      originalAmountCents: 2499,
+      dailyPriceCents: 66,
+      currency: "JPY",
+    });
+
+    expect(plan.planId).toBe("vip_monthly");
+    expect(plan.creditBalance).toBe(3000);
+    expect(plan.toJson()).toEqual({
+      planId: "vip_monthly",
+      planName: "VIP Monthly",
+      orderType: "vip_monthly",
+      vipDays: 30,
+      dolAmount: null,
+      creditBalance: 3000,
+      amountCents: 1999,
+      originalAmountCents: 2499,
+      dailyPriceCents: 66,
+      currency: "JPY",
+    });
+  });
+
+  it("rejects the legacy snake_case payment plan shape", () => {
+    expect(() =>
+      PaymentPlan.fromJson({
+        plan_id: "vip_monthly",
+        plan_name: "VIP Monthly",
+        order_type: "vip_monthly",
+        amount_cents: 1999,
+        original_amount_cents: 2499,
+        daily_price_cents: 66,
+        currency: "JPY",
+        vip_days: 30,
+        dol_amount: null,
+      }),
+    ).toThrow(z.ZodError);
+  });
+});
+
+describe("PaymentPlansResponse", () => {
+  it("parses plans from the new backend response data shape", () => {
+    const response = PaymentPlansResponse.from({
+      plans: [
+        {
+          planId: "dol_1000",
+          planName: "1000 Credits",
+          orderType: "dol",
+          vipDays: null,
+          dolAmount: 1000,
+          creditBalance: 1000,
+          amountCents: 990,
+          originalAmountCents: null,
+          dailyPriceCents: null,
+          currency: "USD",
+        },
+      ],
+    });
+
+    expect(response.plans).toHaveLength(1);
+    expect(response.plans[0]?.dolAmount).toBe(1000);
+  });
+});