Blender 2.8 Boolean Collections Plugin by Ispheria

bl_info = {
    'name': 'Boolean Collections',
    'category': 'Object',
    'author': 'Ispheria',
    'version': (0, 0, 1),
    'blender': (2, 80, 0)
}

import bpy

class AddBoolean(bpy.types.Operator):
    bl_idname = 'object.add_boolean'
    bl_label = 'Add Boolean'
    bl_options = {'UNDO'}

    op: bpy.props.StringProperty(name='Boolean Operation', default='DIFFERENCE')

    def execute(self, context):

        C = context
        A = C.object
        S = C.selected_objects
        D = bpy.data
        O = bpy.ops

        if S.__len__() > 1:

            if A.name in D.collections.keys():
                col = D.collections[A.name]

            else:
                col = D.collections.new(A.name)
                C.scene.collection.children.link(col)

            for obj in C.selected_objects:
                if obj.name not in col.objects: col.objects.link(obj)
                if obj is not A:
                    O.object.modifier_add(type='BOOLEAN')
                    boolean = A.modifiers[-1]
                    boolean.name = obj.name
                    boolean.operation = self.op
                    boolean.object = obj
                    obj.display_type = "WIRE"
                    obj.hide_render = True

            O = A
            A.select_set(False)
            for col in D.collections:
                for obj in S:
                    if obj.name in col.all_objects and col.name not in col.objects:
                        bpy.ops.collection.objects_remove(collection=col.name)

            O.select_set(True)

            return {'FINISHED'}

        else: return {'CANCELLED'}



class ToggleCollectionVisibility(bpy.types.Operator):
    bl_idname = 'object.toggle_collection_visibility'
    bl_label = 'Toggle Collection Visibility'

    def execute(self, context):

        A = context.object
        D = bpy.data

        if A.name in D.collections.keys():
            D.collections[A.name].hide_viewport = not D.collections[A.name].hide_viewport

            return {'FINISHED'}

        else: return {'CANCELLED'}



class SelectAllBooleanModifiers(bpy.types.Operator):
    bl_idname = 'object.select_all_boolean_modifiers'
    bl_label = 'Select All Boolean Modifiers'

    def execute(self, context):

        A = context.object
        D = bpy.data

        if A.name in D.collections.keys():
            D.collections[A.name].hide_viewport = False
            for obj in D.collections[A.name].all_objects:
                obj.select_set(True)
            return {'FINISHED'}

        else: return {'CANCELLED'}



class ApplyAllBooleans(bpy.types.Operator):
    bl_idname = 'object.apply_all_booleans'
    bl_label = 'Apply All Booleans'
    bl_options = {'UNDO'}

    def execute(self, context):

        A = context.object
        D = bpy.data

        meshes = []

        for i in range(A.modifiers.__len__()):
            if A.modifiers[0].type == 'BOOLEAN':
                meshes.append(A.modifiers[0].object)
                bpy.ops.object.modifier_apply(apply_as='DATA', modifier=A.modifiers[0].name)

        for col in D.collections:
            if col.name != A.name:
                for i in range(meshes.__len__() - 1, -1, -1):
                    if meshes[i].name in col.all_objects:
                        meshes.remove(meshes[i])

        O = A
        bpy.ops.object.select_all(action='DESELECT')
        for obj in meshes:
            obj.select_set(True)

        bpy.ops.object.delete(use_global=False, confirm=False)
        O.select_set(True)
        context.scene.collection.children.unlink(D.collections[A.name])
        D.collections.remove(D.collections[A.name])

        return {'FINISHED'}



from bpy.types import Menu

class VIEW3D_PIE_BooleanCollections(Menu):
    bl_idname = 'object.boolean_collections'
    bl_label = 'Boolean Collections'


    def draw(self, context):
        pie = self.layout.menu_pie()

        pie.operator('object.add_boolean', text='Union').op = 'UNION'
        pie.operator('object.add_boolean', text='Intersect').op = 'INTERSECT'
        pie.operator('object.add_boolean', text='Difference').op = 'DIFFERENCE'
        pie.operator('object.toggle_collection_visibility')
        pie.operator('object.select_all_boolean_modifiers')
        pie.operator('object.apply_all_booleans')



def register():
    bpy.utils.register_class(AddBoolean)
    bpy.utils.register_class(ToggleCollectionVisibility)
    bpy.utils.register_class(SelectAllBooleanModifiers)
    bpy.utils.register_class(ApplyAllBooleans)
    bpy.utils.register_class(VIEW3D_PIE_BooleanCollections)

def unregister():
    bpy.utils.unregister_class(AddBoolean)
    bpy.utils.unregister_class(ToggleCollectionVisibility)
    bpy.utils.unregister_class(SelectAllBooleanModifiers)
    bpy.utils.unregister_class(ApplyAllBooleans)
    bpy.utils.unregister_class(VIEW3D_PIE_BooleanCollections)

if __name__ == '__main__':
    register()
    bpy.ops.wm.call_menu_pie(name='object.boolean_collections')