import bpy

def setup_stocker_operator(logic_module):
    """
    Wraps the phase 1 & 2 logic into a Blender Operator.
    """
    class STOCKER_OT_setup(bpy.types.Operator):
        bl_idname = "object.stocker_setup"
        bl_label = "Stocker Helper"
        bl_description = "Generate a boundary cube for the selected objects"
        bl_options = {'REGISTER', 'UNDO'}

        mode: bpy.props.EnumProperty(
            name="Packing Mode",
            description="Select the geometry nodes template to apply",
            items=[
                ('GRID', "Grid Pack", "Use the Grid Pack template"),
                ('CIRCLE', "Circle Pack", "Use the Circle Pack template"),
                # Placeholder for future modes
            ],
            default='GRID'
        )

        def execute(self, context):
            # 1. Get selected objects
            selected_objs = context.selected_objects
            
            # 2. Run logic from previous phases
            bounds = logic_module.calculate_global_bounds(selected_objs)
            if not bounds:
                self.report({'ERROR'}, "No valid mesh objects selected.")
                return {'CANCELLED'}

            # 3. Create the cube
            new_obj = logic_module.create_aligned_boundary_cube(bounds)
            if not new_obj:
                self.report({'ERROR'}, "Failed to create boundary cube.")
                return {'CANCELLED'}

            # 4. Modifier Injection
            # Search for the node group
            group_name = "grid_pack" if self.mode == 'GRID' else "Stocker_Circle"
            node_group = bpy.data.node_groups.get(group_name)

            if not node_group:
                self.report({'WARNING'}, f"Node Group '{group_name}' not found. Boundary created without modifier.")
                return {'FINISHED'}

            # Add Geometry Nodes modifier
            mod = new_obj.modifiers.new(name="circle_pack", type='NODES')
            mod.node_group = node_group

            self.report({'INFO'}, f"Stocker setup complete using {self.mode} mode.")
            return {'FINISHED'}

    return STOCKER_OT_setup

if __name__ == "__main__":
    print("Phase 3: Integration (The Operator) logic loaded.")