From 6def135bbcb07d167f6e01b772b7a447f323bebc Mon Sep 17 00:00:00 2001
From: Nicolas Predella <nicolas@predella.me>
Date: Wed, 20 May 2026 21:46:44 +0300
Subject: [PATCH] up

---
 core/nodeslicer/nodes.py        | 20 ++++---------
 infra/networking/gcode_utils.py | 50 +++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 14 deletions(-)
 create mode 100644 infra/networking/gcode_utils.py

diff --git a/core/nodeslicer/nodes.py b/core/nodeslicer/nodes.py
index a3e885f..cf437a2 100644
--- a/core/nodeslicer/nodes.py
+++ b/core/nodeslicer/nodes.py
@@ -963,9 +963,11 @@ class SLICENODE_GcodeToFile(ExecSliceNode):
 
     def evaluate(self, operator=None):
         from ...infra.networking.bgcode import convert_to_bgcode
+        from ...infra.networking.gcode_utils import get_gcode_name_from_metadata
         from pathlib import Path
+        import os
 
-        gcodes: str = self.resolve_multi_input('Gcode')
+        gcodes: list[str] = [gc for gc in self.resolve_multi_input('Gcode') if gc]
 
         folder: str = resolve_input(self.inputs.get("Folder"))
         if not gcodes:
@@ -976,18 +978,7 @@ class SLICENODE_GcodeToFile(ExecSliceNode):
             return 'error'
 
         for i, gc in enumerate(gcodes):
-            
-            import re, json
-            parts_match = re.search(r"; objects_info = (.*)", gc)
-            name: str = ""
-            if parts_match:
-                gcode_info = json.loads(parts_match.group(1))
-                names: list[str] = [str(v['name']) for v in gcode_info['objects']]
-                from collections import Counter
-                counts = Counter(names)
-                name = "-".join(f"{c}x{n}" if c > 1 else n for n, c in counts.items())
-            else:
-                name = 'object_'+str(i)
+            name = get_gcode_name_from_metadata(gc, default=f'object_{i}')
 
             # User's requested logic: .split('.')[0]
             folder_path = Path(bpy.path.abspath(f"//{folder}"))
@@ -1012,11 +1003,12 @@ class SLICENODE_GcodeToFile(ExecSliceNode):
                     with open(filepath, "w", encoding="utf-8", newline="\n") as f:
                         f.write(gc)
                     if operator: operator.report({'INFO'}, f"G-code saved to {filepath}")
-                return 'ok'
             except Exception as e:
                 if operator: operator.report({'ERROR'}, str(e))
                 return 'error'
 
+        return 'ok'
+
 @register_class
 class SLICENODE_GcodeToTextBlock(ExecSliceNode):
     bl_label = "Gcode to Text Block"
diff --git a/infra/networking/gcode_utils.py b/infra/networking/gcode_utils.py
new file mode 100644
index 0000000..c4dd900
--- /dev/null
+++ b/infra/networking/gcode_utils.py
@@ -0,0 +1,50 @@
+import re
+import json
+from collections import Counter
+from typing import Any
+
+def parse_gcode_metadata(gcode: str) -> dict[str, Any]:
+    """Extracts metadata fields from G-code comments."""
+    fields = {}
+    
+    # 1. Time per print (decimal hours)
+    time_match = re.search(r"; estimated printing time \(normal mode\) = (.*)", gcode)
+    if time_match:
+        time_str = time_match.group(1)
+        h = re.search(r"(\d+)h", time_str)
+        m = re.search(r"(\d+)m", time_str)
+        s = re.search(r"(\d+)s", time_str)
+        total_hours = 0.0
+        if h: total_hours += float(h.group(1))
+        if m: total_hours += float(m.group(1)) / 60.0
+        if s: total_hours += float(s.group(1)) / 3600.0
+        fields["Time per print"] = round(total_hours, 2)
+
+    # 2. Parts per print
+    parts_match = re.search(r"; objects_info = (.*)", gcode)
+    if parts_match:
+        try:
+            info = json.loads(parts_match.group(1))
+            fields["Parts per print"] = len(info.get("objects", []))
+            fields["objects_info"] = info
+        except Exception: pass
+
+    # 3. Weight per print
+    weight_match = re.search(r"; total filament used \[g\] = ([\d\.]+)", gcode)
+    if weight_match:
+        fields["Weight per print"] = int(float(weight_match.group(1)))
+        
+    return fields
+
+def get_gcode_name_from_metadata(gcode: str, default: str = "output") -> str:
+    """Generates a descriptive name for the G-code based on its objects_info metadata."""
+    parts_match = re.search(r"; objects_info = (.*)", gcode)
+    if parts_match:
+        try:
+            gcode_info = json.loads(parts_match.group(1))
+            names: list[str] = [str(v['name']) for v in gcode_info['objects']]
+            counts = Counter(names)
+            return "-".join(f"{c}x{n}" if c > 1 else n for n, c in counts.items())
+        except:
+            pass
+    return default