From b09137eca59be1bfeff75f71b02342010b5043e1 Mon Sep 17 00:00:00 2001
From: domrichardson <100129001+domrichardson@users.noreply.github.com>
Date: Mon, 30 Mar 2026 10:14:07 +0100
Subject: [PATCH] feat: Added the ability to delete task lists

---
 .../application/services/task_service.go      |  6 +---
 .../domain/repositories/interfaces.go         |  1 +
 .../database/task_repository.go               |  5 +++
 frontend/src/App.vue                          | 33 +++++++++++++++++++
 frontend/src/components/TaskBoard.vue         | 23 ++++++++++++-
 5 files changed, 62 insertions(+), 6 deletions(-)

diff --git a/backend/internal/application/services/task_service.go b/backend/internal/application/services/task_service.go
index 0daf053..19b0f13 100644
--- a/backend/internal/application/services/task_service.go
+++ b/backend/internal/application/services/task_service.go
@@ -812,13 +812,9 @@ func (s *TaskService) DeleteTaskList(ctx context.Context, spaceID, taskListID, u
 		return errors.New("task list not found")
 	}
 
-	tasks, err := s.taskRepo.ListTasks(ctx, spaceID, map[string]any{"task_list_id": taskListID})
-	if err != nil {
+	if err := s.taskRepo.DeleteTasksByTaskListID(ctx, taskListID); err != nil {
 		return err
 	}
-	if len(tasks) > 0 {
-		return errors.New("cannot delete task list with tasks")
-	}
 
 	return s.taskListRepo.DeleteTaskList(ctx, taskListID)
 }
diff --git a/backend/internal/domain/repositories/interfaces.go b/backend/internal/domain/repositories/interfaces.go
index 4432152..dc2a467 100644
--- a/backend/internal/domain/repositories/interfaces.go
+++ b/backend/internal/domain/repositories/interfaces.go
@@ -225,6 +225,7 @@ type TaskRepository interface {
 	SearchTasks(ctx context.Context, spaceID bson.ObjectID, query string) ([]*entities.Task, error)
 	UpdateTask(ctx context.Context, task *entities.Task) error
 	DeleteTask(ctx context.Context, id bson.ObjectID) error
+	DeleteTasksByTaskListID(ctx context.Context, taskListID bson.ObjectID) error
 	DeleteTasksBySpaceID(ctx context.Context, spaceID bson.ObjectID) error
 	CountChildren(ctx context.Context, parentTaskID bson.ObjectID) (int64, error)
 }
diff --git a/backend/internal/infrastructure/database/task_repository.go b/backend/internal/infrastructure/database/task_repository.go
index 688ec0e..199e092 100644
--- a/backend/internal/infrastructure/database/task_repository.go
+++ b/backend/internal/infrastructure/database/task_repository.go
@@ -95,6 +95,11 @@ func (r *TaskRepository) DeleteTask(ctx context.Context, id bson.ObjectID) error
 	return err
 }
 
+func (r *TaskRepository) DeleteTasksByTaskListID(ctx context.Context, taskListID bson.ObjectID) error {
+	_, err := r.collection.DeleteMany(ctx, bson.M{"task_list_id": taskListID})
+	return err
+}
+
 func (r *TaskRepository) DeleteTasksBySpaceID(ctx context.Context, spaceID bson.ObjectID) error {
 	_, err := r.collection.DeleteMany(ctx, bson.M{"space_id": spaceID})
 	return err
diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 7a75c3d..15e1374 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -212,6 +212,8 @@
                         v-if="activeView === 'tasks'"
                         :tasks="tasks"
                         :statuses="taskStatuses"
+                        :selected-task-list="selectedTaskList"
+                        :can-delete-task-list="canDeleteTasks"
                         @select-task="openTaskDetail"
                         @filter-change="applyTaskFilters"
                         @reorder-status="reorderTaskStatuses"
@@ -219,6 +221,7 @@
                         @rename-status="renameTaskStatus"
                         @delete-status="deleteTaskStatus"
                         @update-task-status="updateTaskStatusFromBoard"
+                        @delete-task-list="removeTaskList"
                     />
                     <SearchResultsPage
                         v-else-if="isSearchRoute"
@@ -1294,6 +1297,36 @@ const createTaskList = async (taskListData) => {
     }
 };
 
+const removeTaskList = async (taskList) => {
+    if (!currentSpace.value?.id || !taskList?.id || !canDeleteTasks.value) {
+        return;
+    }
+
+    if (!confirm(`Delete task list "${taskList.name}" and all associated tasks?`)) {
+        return;
+    }
+
+    try {
+        await spaceStore.deleteTaskList(currentSpace.value.id, taskList.id);
+
+        if (selectedTaskList.value?.id === taskList.id) {
+            selectedTaskList.value = null;
+            taskDetail.value = null;
+            taskModalDraft.value = null;
+            showTaskModal.value = false;
+            taskFilters.value = {
+                taskListId: null,
+                statusId: null,
+                parentTaskId: null,
+            };
+            await spaceStore.fetchTasks(currentSpace.value.id, taskFilters.value);
+            activeView.value = "notes";
+        }
+    } catch (error) {
+        alert(error?.response?.data || "Unable to delete task list.");
+    }
+};
+
 const createSpace = async (spaceData) => {
     showCreateSpaceModal.value = false;
     await spaceStore.createSpace(spaceData);
diff --git a/frontend/src/components/TaskBoard.vue b/frontend/src/components/TaskBoard.vue
index 5f8b12a..4c1ca74 100644
--- a/frontend/src/components/TaskBoard.vue
+++ b/frontend/src/components/TaskBoard.vue
@@ -185,6 +185,12 @@
             </section>
         </div>
 
+        <section v-if="selectedTaskList && canDeleteTaskList" class="danger-zone" aria-labelledby="task-list-danger-zone-title">
+            <h6 id="task-list-danger-zone-title" class="danger-zone-title">Danger Zone</h6>
+            <p class="danger-zone-copy mb-2">Delete this task list and all associated tasks permanently.</p>
+            <button type="button" class="btn btn-outline-danger" @click="emitDeleteTaskList">Delete Task List</button>
+        </section>
+
         <teleport to="body">
             <div v-if="showStatusModal" class="modal fade show d-block" tabindex="-1" role="dialog" aria-modal="true" @click.self="closeStatusModal">
                 <div class="modal-dialog modal-dialog-centered" role="document">
@@ -235,9 +241,17 @@ const props = defineProps({
         type: Array,
         default: () => [],
     },
+    selectedTaskList: {
+        type: Object,
+        default: null,
+    },
+    canDeleteTaskList: {
+        type: Boolean,
+        default: false,
+    },
 });
 
-const emit = defineEmits(["create-task", "select-task", "filter-change", "reorder-status", "create-status", "rename-status", "delete-status", "update-task-status"]);
+const emit = defineEmits(["create-task", "select-task", "filter-change", "reorder-status", "create-status", "rename-status", "delete-status", "update-task-status", "delete-task-list"]);
 
 const filterStatus = ref("");
 const filterParent = ref("");
@@ -470,6 +484,13 @@ const deleteStatusFromModal = () => {
     });
     closeStatusModal();
 };
+
+const emitDeleteTaskList = () => {
+    if (!props.selectedTaskList?.id || !props.canDeleteTaskList) {
+        return;
+    }
+    emit("delete-task-list", props.selectedTaskList);
+};
 </script>
 
 <style scoped src="../assets/styles/scoped/components/TaskBoard.css"></style>