feat(admin): implement promotions management and loyalty points configuration

apps/backend/src/routes/promotions.ts

@@ -17,4 +17,63 @@ export const promotionsRoute = new Elysia({ prefix: "/promotions" })
       },
       orderBy: { level: 'asc' }
     });
+  })
+  .get("/", async () => {
+    return await prisma.promotion.findMany({
+      orderBy: [{ level: 'asc' }, { createdAt: 'desc' }]
+    });
+  })
+  .post("/", async ({ body, set }) => {
+    try {
+      const data = body as any;
+      return await prisma.promotion.create({ data });
+    } catch (err) {
+      set.status = 500;
+      return { error: "Failed to create promotion" };
+    }
+  }, {
+    body: t.Object({
+      name: t.String(),
+      level: t.Number(),
+      type: t.String(),
+      value: t.Number(),
+      minPurchase: t.Number(),
+      isActive: t.Boolean(),
+      startDate: t.Optional(t.Nullable(t.String())),
+      endDate: t.Optional(t.Nullable(t.String()))
+    })
+  })
+  .put("/:id", async ({ params: { id }, body, set }) => {
+    try {
+      const data = body as any;
+      return await prisma.promotion.update({
+        where: { id: Number(id) },
+        data
+      });
+    } catch (err) {
+      set.status = 500;
+      return { error: "Failed to update promotion" };
+    }
+  }, {
+    body: t.Object({
+      name: t.String(),
+      level: t.Number(),
+      type: t.String(),
+      value: t.Number(),
+      minPurchase: t.Number(),
+      isActive: t.Boolean(),
+      startDate: t.Optional(t.Nullable(t.String())),
+      endDate: t.Optional(t.Nullable(t.String()))
+    })
+  })
+  .delete("/:id", async ({ params: { id }, set }) => {
+    try {
+      await prisma.promotion.delete({
+        where: { id: Number(id) }
+      });
+      return { success: true };
+    } catch (err) {
+      set.status = 500;
+      return { error: "Failed to delete promotion" };
+    }
   });