feat: add map image site module

app/routers/admin.py

@@ -21,6 +21,7 @@ from ..models import (
     Destination,
     HeroSlide,
     Lead,
+    MapImage,
     MediaAsset,
     Product,
     ProductImage,
@@ -62,6 +63,16 @@ SITE_CONFIG_MODULES = {
         "none_to_empty": set(),
         "create_defaults": {"isHot": False},
     },
+    "map": {
+        "model": MapImage,
+        "entity": "map_image",
+        "primary": "image",
+        "fields": {"image", "isActive"},
+        "none_to_empty": set(),
+        "create_defaults": {},
+        "ordered": False,
+        "singleton": True,
+    },
     "themes": {
         "model": ThemeCard,
         "entity": "theme_card",
@@ -302,14 +313,32 @@ def hero_slide_admin_dict(item: HeroSlide) -> dict:
     }
 
 
+def map_image_admin_dict(item: MapImage) -> dict:
+    return {
+        "id": item.id,
+        "image": item.image or None,
+        "isActive": item.isActive,
+        "createdAt": encode_value(item.createdAt),
+        "updatedAt": encode_value(item.updatedAt),
+    }
+
+
 def site_item_dict(module: str, item) -> dict:
     if module == "heroSlides":
         return hero_slide_admin_dict(item)
+    if module == "map":
+        return map_image_admin_dict(item)
     return destination_dict(item) if module == "destinations" else model_dict(item)
 
 
-def module_items(db: Session, model) -> list:
-    return db.scalars(select(model).order_by(model.sortOrder.asc())).all()
+def module_items(db: Session, config: dict) -> list:
+    model = config["model"]
+    stmt = select(model)
+    if config.get("ordered", True):
+        stmt = stmt.order_by(model.sortOrder.asc())
+    else:
+        stmt = stmt.order_by(model.createdAt.asc())
+    return db.scalars(stmt).all()
 
 
 def normalize_site_sort_orders(items: list) -> None:
@@ -328,7 +357,7 @@ def site_create_payload(module: str, config: dict, body: SiteConfigPatchIn, db:
     for field, value in config["create_defaults"].items():
         payload.setdefault(field, value)
     payload["isActive"] = payload.get("isActive", True)
-    if payload.get("sortOrder") is None:
+    if config.get("ordered", True) and payload.get("sortOrder") is None:
         payload["sortOrder"] = next_site_sort_order(db, config["model"])
     if module == "destinations":
         slug = clean_site_value(payload.get("slug"))
@@ -491,6 +520,10 @@ def admin_site_config(_user: AdminUser = Depends(require_admin), db: Session = D
             for item in db.scalars(select(HeroSlide).order_by(HeroSlide.sortOrder.asc())).all()
         ],
         "destinations": [destination_dict(item) for item in destinations],
+        "map": [
+            map_image_admin_dict(item)
+            for item in db.scalars(select(MapImage).order_by(MapImage.createdAt.asc())).all()
+        ],
         "themes": [
             model_dict(item)
             for item in db.scalars(select(ThemeCard).order_by(ThemeCard.sortOrder.asc())).all()
@@ -511,6 +544,8 @@ def create_site_config(
     db: Session = Depends(get_db),
 ):
     config = site_module(module)
+    if config.get("singleton") and module_items(db, config):
+        site_config_error(409, "地图图片已存在", "MAP_IMAGE_ALREADY_EXISTS", {"module": module})
     item = config["model"](**site_create_payload(module, config, body, db))
     db.add(item)
     db.flush()
@@ -529,7 +564,9 @@ def reorder_site_config(
     db: Session = Depends(get_db),
 ):
     config = site_module(module)
-    items = module_items(db, config["model"])
+    if not config.get("ordered", True):
+        site_config_error(400, "模块不支持排序", "MODULE_CONFIG_REORDER_UNSUPPORTED", {"module": module})
+    items = module_items(db, config)
     current_ids = [item.id for item in items]
     requested_ids = body.itemIds
     if len(set(requested_ids)) != len(requested_ids) or set(requested_ids) != set(current_ids):
@@ -590,7 +627,8 @@ def delete_site_config(
     before = site_item_dict(module, item)
     db.delete(item)
     db.flush()
-    normalize_site_sort_orders(module_items(db, config["model"]))
+    if config.get("ordered", True):
+        normalize_site_sort_orders(module_items(db, config))
     result = {"id": item_id}
     audit(db, get_actor_id(request), "delete", config["entity"], item_id, result, before)
     db.commit()