Sync print weight and time parameters

README.md

@@ -98,6 +98,13 @@ BMB-<first-12-sha1-chars>
 
 This means repeat prints of the same file/name reuse the same `Part` and create new `StockItem` rows. To change matching behavior later, edit `PART_KEY_FIELDS`.
 
+## InvenTree Part Parameters
+
+For each synced `Part`, the service updates these InvenTree parameters when matching parameter templates exist:
+
+- `Weight`: filament weight per printed item in grams. If a Bambuddy archive has `quantity=2`, the total filament weight is divided by 2.
+- `PrintTime`: print duration from Bambuddy. The visible value is formatted as `1h 6m 1s`; `data_numeric` stores the duration in seconds.
+
 ## Useful Endpoints
 
 ```text

src/bambuddy_inventree_sync/inventree.py

@@ -15,6 +15,7 @@ class InvenTreeClient:
 
         self.settings = settings
         self.base_url = base_url
+        self._parameter_template_cache: dict[str, int] = {}
         self.client = httpx.AsyncClient(
             base_url=self.base_url,
             headers={
@@ -78,6 +79,62 @@ class InvenTreeClient:
         }
         return await self._request("POST", "/stock/", json=payload)
 
+    async def upsert_part_parameter(
+        self,
+        *,
+        part_id: int,
+        template_name: str,
+        data: str,
+        data_numeric: float | None,
+        note: str,
+    ) -> dict[str, Any]:
+        template_id = await self.get_parameter_template_id(template_name)
+        existing = await self.find_part_parameter(part_id=part_id, template_id=template_id)
+        payload: dict[str, Any] = {
+            "template": template_id,
+            "model_type": "part.part",
+            "model_id": part_id,
+            "data": data[:500],
+            "data_numeric": data_numeric,
+            "note": note[:500],
+        }
+
+        if existing:
+            parameter_id = int(existing.get("pk") or existing.get("id"))
+            return await self._request("PATCH", f"/parameter/{parameter_id}/", json=payload)
+
+        return await self._request("POST", "/parameter/", json=payload)
+
+    async def get_parameter_template_id(self, name: str) -> int:
+        cache_key = name.lower()
+        if cache_key in self._parameter_template_cache:
+            return self._parameter_template_cache[cache_key]
+
+        data = await self._request("GET", "/parameter/template/", params={"search": name, "limit": 100})
+        for item in self._items(data):
+            if str(item.get("name", "")).lower() == cache_key:
+                template_id = int(item.get("pk") or item.get("id"))
+                self._parameter_template_cache[cache_key] = template_id
+                return template_id
+
+        raise ExternalApiError(f"InvenTree parameter template '{name}' was not found")
+
+    async def find_part_parameter(self, *, part_id: int, template_id: int) -> dict[str, Any] | None:
+        data = await self._request(
+            "GET",
+            "/parameter/",
+            params={
+                "model_type": "part.part",
+                "model_id": part_id,
+                "template": template_id,
+                "limit": 100,
+            },
+        )
+        for item in self._items(data):
+            if item.get("model_type") == "part.part" and item.get("model_id") == part_id and item.get("template") == template_id:
+                return item
+        return None
+
     @staticmethod
     def batch_for_archive(archive_id: int) -> str:
         return f"bambuddy-{archive_id}"

src/bambuddy_inventree_sync/sync.py

@@ -131,6 +131,7 @@ class ArchiveSyncService:
         description = self.description_for_archive(archive)
 
         part_id = await self._get_or_create_part(part_key=part_key, ipn=ipn, name=name, description=description)
+        await self._sync_part_parameters(part_id=part_id, archive=archive)
         batch = self.inventree.batch_for_archive(archive.id)
         existing_stock = await self.inventree.find_stock_by_batch(part_id=part_id, batch=batch)
 
@@ -201,6 +202,42 @@ class ArchiveSyncService:
         self.database.upsert_part(part_key=part_key, inventree_part_id=part_id, display_name=name)
         return part_id
 
+    async def _sync_part_parameters(self, *, part_id: int, archive: Archive) -> None:
+        for parameter in self.part_parameters_for_archive(archive):
+            await self.inventree.upsert_part_parameter(part_id=part_id, **parameter)
+
+    def part_parameters_for_archive(self, archive: Archive) -> list[dict[str, str | float | None]]:
+        parameters: list[dict[str, str | float | None]] = []
+
+        weight = archive.filament_used_grams or archive.filament_used
+        if weight is not None:
+            quantity = archive.quantity or 1
+            if quantity <= 0:
+                quantity = 1
+            weight_per_item = float(weight) / float(quantity)
+            parameters.append(
+                {
+                    "template_name": "Weight",
+                    "data": self.format_number(weight_per_item),
+                    "data_numeric": weight_per_item,
+                    "note": f"Imported from Bambuddy archive {archive.id}; total print weight {self.format_number(float(weight))} g",
+                }
+            )
+
+        duration = archive.actual_time_seconds or archive.print_time_seconds or archive.duration
+        if duration is not None:
+            duration_seconds = float(duration)
+            parameters.append(
+                {
+                    "template_name": "PrintTime",
+                    "data": self.format_duration(duration_seconds),
+                    "data_numeric": duration_seconds,
+                    "note": f"Imported from Bambuddy archive {archive.id}; value stored as seconds in data_numeric",
+                }
+            )
+
+        return parameters
+
     def part_key_for_archive(self, archive: Archive) -> str:
         parts: list[str] = []
         raw = archive.model_dump()
@@ -270,6 +307,22 @@ class ArchiveSyncService:
         ]
         return "\n".join(row for row in rows if row)
 
+    @staticmethod
+    def format_number(value: float) -> str:
+        return f"{value:.3f}".rstrip("0").rstrip(".")
+
+    @staticmethod
+    def format_duration(seconds: float) -> str:
+        total_seconds = int(round(seconds))
+        hours, remainder = divmod(total_seconds, 3600)
+        minutes, secs = divmod(remainder, 60)
+
+        if hours:
+            return f"{hours}h {minutes}m {secs}s"
+        if minutes:
+            return f"{minutes}m {secs}s"
+        return f"{secs}s"
+
     @staticmethod
     def is_successful_archive(archive: Archive) -> bool:
         status = (archive.status or "").lower()