first commit

helix/calculators/bom_helper.py

@@ -0,0 +1,36 @@
+from math import ceil
+
+from helix.constants.panel_type import PanelType
+
+
+def add_parts_to_list(parts_list, parts_to_add, multiplier=1):
+    for part, quantity in parts_to_add.items():
+        previous_value = parts_list.get(part) or 0
+        if quantity != 0:
+            parts_list[part] = previous_value + quantity * multiplier
+
+
+def apply_fudge_factors(parts_list, fudge_factors):
+    for part, quantity in parts_list.items():
+        fudge_factor = fudge_factors.get(part) or 1.0
+        parts_list[part] = quantity * fudge_factor
+
+
+def apply_package_size_rounding(parts_list, package_sizes):
+    for part, quantity in parts_list.items():
+        package_size = package_sizes.get(part) or 1
+        parts_list[part] = package_size * ceil(quantity / package_size)
+
+
+def get_panel_type_counts(panels):
+    panel_type_counts = {
+        PanelType.Corner: 0,
+        PanelType.NorthSouth: 0,
+        PanelType.EastWest: 0,
+        PanelType.Middle: 0,
+    }
+
+    for panel in panels:
+        panel_type_counts[panel.panel_type] += 1
+
+    return panel_type_counts