Inherit email link addresses from hosting and proxy settings

backend/app/routers/recaps.py

@@ -6,6 +6,7 @@ from uuid import UUID
 from fastapi import APIRouter, Depends, HTTPException, Query, Response
 from pydantic import BaseModel, ConfigDict, Field, field_validator
 
+from ..services.public_urls import magent_public_url
 from ..auth import get_current_user, require_admin
 from ..feature_guards import require_stats
 from ..services import email_recaps as recaps, recap_store as store
@@ -31,7 +32,7 @@ class RecapSettings(StrictPayload):
     enabled: bool
     day: int = Field(ge=1, le=28)
     hour: int = Field(ge=0, le=23)
-    public_url: str = Field(max_length=500)
+    public_url: str = Field(default="", max_length=500)
 
     @field_validator("public_url")
     @classmethod
@@ -114,9 +115,9 @@ def settings(payload: RecapSettings, user: dict = Depends(require_admin)) -> dic
         # Validate against the proposed URL without writing any partial settings.
         ready, detail = recaps.smtp_email_config_ready()
         runtime = recaps.get_runtime_settings()
-        if not payload.public_url or not ready or not recaps.worker_enabled() or not runtime.jellystat_base_url or not runtime.jellystat_api_key:
+        if not magent_public_url(payload.public_url or store.settings()["public_url"]) or not ready or not recaps.worker_enabled() or not runtime.jellystat_base_url or not runtime.jellystat_api_key:
             raise HTTPException(409, "Set the public address, enable SMTP email and connect Jellystat before starting the schedule." if ready else detail)
-    return store.save_settings(payload.model_dump(), datetime.now(timezone.utc))
+    return store.save_settings({**payload.model_dump(), "public_url": magent_public_url(payload.public_url or store.settings()["public_url"])}, datetime.now(timezone.utc))
 
 
 @router.get("/admin/email-recaps/preview")