task-to-task.link.graphql

interface TaskToTaskLink {
  id: ID!
  left: Task!
  right: Task!
}

enum TaskToTaskDependencyLinkKind {
  DEPENDENCY
  DEPENDENT
}

enum TaskToTaskDependencyLinkSynchronizationKind {
  START_TO_START
  FINISH_TO_START
  START_TO_FINISH
  FINISH_TO_FINISH
}

type TaskToTaskDependencyLink implements TaskToTaskLink {
  id: ID!
  left: Task!
  right: Task!
  kind: TaskToTaskDependencyLinkKind!

  synchronizationKind: TaskToTaskDependencyLinkSynchronizationKind!
  synchronizationLag: Duration!
}

enum TaskToTaskAncestorLinkKind {
  CHILD
  PARENT
}

type TaskToTaskAncestorLink implements TaskToTaskLink {
  id: ID!
  left: Task!
  right: Task!
  kind: TaskToTaskAncestorLinkKind!
}

type CreateTaskToTaskDependencyLinkInput {
  left: ID!
  right: ID!
  kind: TaskToTaskDependencyLinkKind
  synchronizationKind: TaskToTaskDependencyLinkSynchronizationKind!
  synchronizationLag: Duration!
}

type CreateTaskToTaskAncestorLinkInput {
  left: ID!
  right: ID!
  kind: TaskToTaskAncestorLinkKind
}

union CreateTaskToTaskLinkInput =
    CreateTaskToTaskDependencyLinkInput
  | CreateTaskToTaskAncestorLinkInput

extend type Mutation {
  createTaskToTaskLink(input: CreateTaskToTaskLinkInput!): TaskToTaskLink!
}