Update utils.py

utils.py

@@ -1,15 +1,34 @@
 import json
+import pandas as pd
+import os
 
-def load_material_db(path="material_db.json"):
-    with open(path, "r", encoding="utf-8") as f:
+DB_FILE = "material_db.json"
+
+def build_db_from_excel(file_path, description_key):
+    df = pd.read_excel(file_path)
+    df = df.fillna("-")
+
+    items = []
+    for _, row in df.iterrows():
+        item = {
+            "item_code": str(row.get("کد فهرست بها", "")).strip(),
+            "item_name": str(row.get("شرح کالا", "")).strip(),
+            "quantity": float(row.get("مقدار", 0)),
+            "unit": str(row.get("واحد", "")).strip()
+        }
+        items.append(item)
+
+    return {description_key: items}
+
+def save_material_db(data):
+    with open(DB_FILE, "w", encoding="utf-8") as f:
+        json.dump(data, f, ensure_ascii=False, indent=2)
+
+def load_material_db():
+    if not os.path.exists(DB_FILE):
+        return {}
+    with open(DB_FILE, "r", encoding="utf-8") as f:
         return json.load(f)
 
-def filter_items(materials, pole_height, pole_power, conductor_size):
-    matched = []
-    for item in materials:
-        cond = item["conditions"]
-        if (cond["pole_height"] in ["-", pole_height]) and \
-           (cond["pole_power"] in ["-", pole_power]) and \
-           (cond["conductor_size"] in ["-", conductor_size]):
-            matched.append(item)
-    return matched
+def get_items_for_description(db, description):
+    return db.get(description, [])