feat(payment): add chat support discounts and gratitude

2026-07-28 17:42:53 +08:00
parent aee35353a3
commit ef9b79bc83
35 changed files with 768 additions and 56 deletions
@@ -0,0 +1,63 @@
+import type { CommercialOfferSummary } from "@/data/schemas/payment";
+
+export type ChatSupportCtaKind =
+  | "support"
+  | "firstRecharge"
+  | "commercialOffer";
+
+export interface ChatSupportCtaView {
+  kind: ChatSupportCtaKind;
+  label: string;
+  commercialOfferId: string | null;
+  planId: string | null;
+  expiresAt: string | null;
+}
+
+export function deriveChatSupportCta(input: {
+  isFirstRecharge: boolean;
+  commercialOffer: CommercialOfferSummary | null;
+  nowMs: number;
+}): ChatSupportCtaView {
+  if (input.isFirstRecharge) {
+    return {
+      kind: "firstRecharge",
+      label: "Support me · 50% OFF · First recharge",
+      commercialOfferId: null,
+      planId: null,
+      expiresAt: null,
+    };
+  }
+
+  const offer = input.commercialOffer;
+  const expiresAtMs = offer ? Date.parse(offer.expiresAt) : Number.NaN;
+  if (offer?.enabled && Number.isFinite(expiresAtMs) && expiresAtMs > input.nowMs) {
+    return {
+      kind: "commercialOffer",
+      label: `Support me · ${offer.discountPercent}% OFF · ${formatOfferCountdown(expiresAtMs, input.nowMs)}`,
+      commercialOfferId: offer.commercialOfferId,
+      planId: offer.planId,
+      expiresAt: offer.expiresAt,
+    };
+  }
+
+  return {
+    kind: "support",
+    label: "Support me",
+    commercialOfferId: null,
+    planId: null,
+    expiresAt: null,
+  };
+}
+
+export function formatOfferCountdown(expiresAtMs: number, nowMs: number): string {
+  const totalSeconds = Math.max(
+    0,
+    Math.ceil((expiresAtMs - nowMs) / 1000) - 1,
+  );
+  const hours = Math.floor(totalSeconds / 3600);
+  const minutes = Math.floor((totalSeconds % 3600) / 60);
+  const seconds = totalSeconds % 60;
+  return [hours, minutes, seconds]
+    .map((value) => String(value).padStart(2, "0"))
+    .join(":");
+}