export_cost_schedules - fix confusing filename

Mentioned in #6545

Override filename to be always empty, so user won't have an expectation that csvs will be saved as a single file (currently they're always saved to a directory).

src/bonsai/bonsai/bim/module/cost/operator.py

@@ -24,6 +24,7 @@ import bonsai.tool as tool
 from bpy_extras.io_utils import ImportHelper, ExportHelper
 import bonsai.tool as tool
 import bonsai.core.cost as core
+from pathlib import Path
 from typing import get_args, TYPE_CHECKING, Literal
 
 
@@ -687,7 +688,8 @@ class ExportCostSchedules(bpy.types.Operator, ExportHelper):
     bl_idname = "bim.export_cost_schedules"
     bl_label = "Export Cost Schedule"
     bl_options = {"REGISTER", "UNDO"}
-    bl_description = "Export a cost schedule to a CSV, XSLX OR ODS file"
+    bl_description = "Export current/all cost schedules as CSV, XSLX or ODS files to the provided directory."
+
     cost_schedule: bpy.props.IntProperty()
     format: bpy.props.EnumProperty(name="Format", items=(("CSV", "CSV", ""), ("XLSX", "XLSX", ""), ("ODS", "ODS", "")))
     directory: bpy.props.StringProperty(subtype="FILE_PATH")
@@ -697,7 +699,15 @@ class ExportCostSchedules(bpy.types.Operator, ExportHelper):
     )
 
     if TYPE_CHECKING:
+        cost_schedule: int
         format: Literal["CSV", "XLSX", "ODS"]
+        directory: str
+
+    def check(self, context):
+        if self.filepath != self.directory:
+            self.filepath = self.directory
+            return True
+        return False
 
     @property
     def filename_ext(self) -> str:
@@ -706,15 +716,12 @@ class ExportCostSchedules(bpy.types.Operator, ExportHelper):
     def execute(self, context):
         cost_schedule = tool.Ifc.get().by_id(self.cost_schedule) if self.cost_schedule else None
         r = core.export_cost_schedules(
-            tool.Cost, filepath=self.directory, format=self.format, cost_schedule=cost_schedule
+            tool.Cost, dirpath=self.directory, format=self.format, cost_schedule=cost_schedule
         )
         if isinstance(r, str):
             self.report({"ERROR"}, r)
         return {"FINISHED"}
 
-    def invoke(self, context, event):
-        return ExportHelper.invoke(self, context, event)
-
     def draw(self, context):
         self.layout.label(text="Choose a format")
         self.layout.prop(self, "format")

src/bonsai/bonsai/core/cost.py

@@ -338,12 +338,12 @@ def calculate_cost_item_resource_value(ifc: tool.Ifc, cost_item: ifcopenshell.en
 
 def export_cost_schedules(
     cost: tool.Cost,
-    filepath: str,
+    dirpath: str,
     format: Literal["CSV", "ODS", "XLSX"],
     cost_schedule: Union[ifcopenshell.entity_instance, None] = None,
 ) -> Union[str, None]:
     cost.play_sound()
-    return cost.export_cost_schedules(filepath, format, cost_schedule)
+    return cost.export_cost_schedules(dirpath, format, cost_schedule)
 
 
 def clear_cost_item_assignments(

src/bonsai/bonsai/tool/cost.py

@@ -651,7 +651,7 @@ class Cost(bonsai.core.tool.Cost):
     @classmethod
     def export_cost_schedules(
         cls,
-        filepath: str,
+        dirpath: str,
         format: Literal["CSV", "ODS", "XLSX"],
         cost_schedule: Optional[ifcopenshell.entity_instance] = None,
     ) -> Union[str, None]:
@@ -659,8 +659,8 @@ class Cost(bonsai.core.tool.Cost):
         import os
         import sys
 
-        if filepath:
-            path = filepath
+        if dirpath:
+            path = dirpath
         else:
             path = tool.Blender.get_data_dir_path(Path("build") / "cost_schedules").__str__()