switch to use grocy feature

app.py

@@ -1,8 +1,7 @@
 # app.py
 import asyncio
 from functools import lru_cache
-from io import BytesIO
-from typing import List
+from typing import List, Optional
 
 from barcode import Code128
 from barcode.writer import ImageWriter
@@ -20,6 +19,21 @@ if not hasattr(Image, "ANTIALIAS"):
 app = FastAPI(title="QL-1060N Stacked Barcode Printer")
 
 
+class PrintRequest(BaseModel):
+    # from LABEL_PRINTER_PARAMS
+    printer_ip: str = Field(..., description="QL-1060N IP on LAN")
+    model: str = Field(..., description="Brother model")
+    label: str = Field(..., description="12 mm tape")
+    # grocy payload:
+    grocycode: str = Field(..., description="Raw GrocyCode")
+    product: str = Field(..., description="Product name")
+    due_date: str = Field(..., description="Due date from stock entry")
+
+    class Config:
+        # ignore any other fields Grocy might send
+        extra = "ignore"
+
+
 @lru_cache(maxsize=256)
 def make_code128(data: str) -> Image.Image:
     # 1) Instantiate the barcode object (checksum auto-added for Code128)
@@ -49,15 +63,6 @@ def make_datamatrix(data: str) -> Image.Image:
     return pil_img.convert("1")
 
 
-class PrintRequest(BaseModel):
-    data: str = Field(..., description="String to encode")
-    printer_ip: str = Field(
-        "192.168.178.49", description="Brother QL-1060N IP on your LAN"
-    )
-    model: str = Field("QL-1060N", description="Brother model")
-    label: str = Field("12", description="12 mm continuous tape")
-
-
 def compose_label(images: List[Image.Image]) -> Image.Image:
     """
     Horizontally stack each barcode image with padding,
@@ -119,16 +124,15 @@ def send_to_printer(image: Image.Image, printer_ip: str, model: str, label: str)
 
 
 @app.post("/print", summary="Print Code128 + DataMatrix side-by-side")
-async def print_stacked(req: PrintRequest):
+async def print_from_grocy(req: PrintRequest):
     try:
         loop = asyncio.get_running_loop()
-        code_task = loop.run_in_executor(None, make_code128, req.data)
-        dm_task = loop.run_in_executor(None, make_datamatrix, req.data)
-        code_img, dm_img = await asyncio.gather(code_task, dm_task)
-
+        code_img, dm_img = await asyncio.gather(
+            loop.run_in_executor(None, make_code128, req.grocycode),
+            loop.run_in_executor(None, make_datamatrix, req.grocycode),
+        )
         label_img = compose_label([code_img, dm_img])
         send_to_printer(label_img, req.printer_ip, req.model, req.label)
-
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))