query gqlSubjects {
  amendableSubjects: subjects {
    id
    name
  }
}

query gqlPersons {
  amendableTeachers: persons {
    id
    fullName
  }
}

query gqlRooms {
  amendableRooms: rooms {
    id
    name
  }
}

mutation createAmendLesson($input: CreateLessonEventInput!) {
  createAmendLesson(input: $input) {
    lessonEvent {
      id
      amends {
        id
      }
      datetimeStart
      datetimeEnd
      subject {
        id
      }
      teachers {
        id
      }
      groups {
        id
      }
      rooms {
        id
      }
      cancelled
      comment
    }
  }
}

mutation patchAmendLesson($input: PatchLessonEventInput!, $id: ID!) {
  patchAmendLesson(input: $input, id: $id) {
    lessonEvent {
      id
      subject {
        id
      }
      teachers {
        id
      }
      groups {
        id
      }
      rooms {
        id
      }
      cancelled
      comment
    }
  }
}

mutation deleteAmendLesson($id: ID!) {
  deleteAmendLesson(id: $id) {
    ok
  }
}