add project linking.

models/task.go

@@ -67,6 +67,11 @@ type TaskUpdate struct {
 	ProjectID      *string    `json:"projectId"`
 }
 
+type TaskLink struct {
+	TaskID    string `json:"taskId" db:"task_id"`
+	ProjectID string `json:"projectId" db:"project_id"`
+}
+
 type TaskResult struct {
 	Task
 	Item            *Item    `json:"item"`
@@ -87,7 +92,12 @@ type TaskFilter struct {
 type TaskRepository interface {
 	Find(ctx context.Context, id string) (*Task, error)
 	List(ctx context.Context, filter TaskFilter) ([]*Task, error)
+	ListWithLinks(ctx context.Context, filter TaskFilter) ([]*Task, []*TaskLink, error)
 	Insert(ctx context.Context, task Task) error
 	Update(ctx context.Context, task Task) error
+	CreateLink(ctx context.Context, link TaskLink) error
+	DeleteLink(ctx context.Context, link TaskLink) error
+	UnlinkTask(ctx context.Context, task Task) error
+	UnlinkProject(ctx context.Context, project Project) error
 	Delete(ctx context.Context, task Task) error
 }