Enhance gift sending logic: Implement retry mechanism for 'tooOften' error in FalukantService and update error handling in FamilyView to display retry time.

backend/controllers/falukantController.js

@@ -99,7 +99,16 @@ class FalukantController {
             return this.service.getGifts(userId);
         });
         this.getChildren = this._wrapWithUser((userId) => this.service.getChildren(userId));
-        this.sendGift = this._wrapWithUser((userId, req) => this.service.sendGift(userId, req.body.giftId));
+        this.sendGift = this._wrapWithUser(async (userId, req) => {
+            try {
+                return await this.service.sendGift(userId, req.body.giftId);
+            } catch (e) {
+                if (e && e.name === 'PreconditionError' && e.message === 'tooOften') {
+                    throw { status: 412, message: 'tooOften', retryAt: e.meta?.retryAt };
+                }
+                throw e;
+            }
+        });
 
         this.getTitlesOfNobility = this._wrapWithUser((userId) => this.service.getTitlesOfNobility(userId));
         this.getHouseTypes = this._wrapWithUser((userId) => this.service.getHouseTypes(userId));

backend/services/falukantService.js

@@ -2868,7 +2868,10 @@ class FalukantService extends BaseService {
             limit: 1
         });
         if (lastGift && (lastGift.createdAt.getTime() + 3_600_000) > Date.now()) {
-            throw new PreconditionError('tooOften');
+            const retryAt = new Date(lastGift.createdAt.getTime() + 3_600_000);
+            const err = new PreconditionError('tooOften');
+            err.meta = { retryAt: retryAt.toISOString() };
+            throw err;
         }
         const gift = await PromotionalGift.findOne({
             where: { id: giftId },

frontend/src/i18n/locales/de/falukant.json

@@ -522,7 +522,8 @@
                     "tooOften": "Du kannst nicht so oft Geschenke machen.",
                     "insufficientFunds": "Du hast nicht genug Geld."
                 },
-                "success": "Das Geschenk wurde überreicht."
+                "success": "Das Geschenk wurde überreicht.",
+                "nextGiftAt": "Nächstes Geschenk ab"
             }
         },
         "product": {

frontend/src/views/falukant/FamilyView.vue

@@ -353,8 +353,18 @@ export default {
                 this.$root.$refs.messageDialog.open('tr:falukant.family.sendgift.success');
             } catch (error) {
                 console.log(error.response);
-                if (error.response.status === 412) {
+                if (error.response?.status === 412) {
+                    const retryAtIso = error.response?.data?.retryAt;
+                    if (retryAtIso) {
+                        const retryStr = new Date(retryAtIso).toLocaleString(navigator.language, {
+                            year: 'numeric', month: '2-digit', day: '2-digit',
+                            hour: '2-digit', minute: '2-digit'
+                        });
+                        const baseMsg = this.$t(`falukant.family.sendgift.error.${error.response.data.error}`);
+                        this.$root.$refs.errorDialog.open(`${baseMsg} — ${this.$t('falukant.family.sendgift.nextGiftAt')}: ${retryStr}`);
+                    } else {
                         this.$root.$refs.errorDialog.open(`tr:falukant.family.sendgift.error.${error.response.data.error}`);
+                    }
                 } else {
                     this.$root.$refs.errorDialog.open(`tr:falukant.family.sendgift.error.generic`);
                 }