import { apiRequestData } from "./http";

export type DepartmentItem = {
  id: string;
  name: string;
  parentId: string | null;
  archivedAt: string | null;
  createdAt: string | null;
  updatedAt: string | null;
};

export type DepartmentTreeNode = DepartmentItem & {
  children: DepartmentTreeNode[];
};

export type DepartmentListResponse = {
  includeArchived: boolean;
  items: DepartmentItem[];
  tree: DepartmentTreeNode[];
};

type DepartmentMutationResponse = {
  department: DepartmentItem;
  outcome?: "already_archived" | "archived";
};

export async function fetchDepartments(params: { includeArchived?: boolean } = {}) {
  const search = new URLSearchParams();
  if (params.includeArchived != null) {
    search.set("includeArchived", params.includeArchived ? "1" : "0");
  }

  const qs = search.toString();
  return apiRequestData<DepartmentListResponse>(`/api/departments${qs ? `?${qs}` : ""}`);
}

export async function createDepartment(payload: { name: string; parentId?: string | null }) {
  const response = await apiRequestData<DepartmentMutationResponse>("/api/departments", {
    method: "POST",
    body: JSON.stringify(payload),
  });
  return response.department;
}

export async function updateDepartment(departmentId: string, payload: { name?: string; parentId?: string | null }) {
  const response = await apiRequestData<DepartmentMutationResponse>(`/api/departments/${departmentId}`, {
    method: "PATCH",
    body: JSON.stringify(payload),
  });
  return response.department;
}

export async function archiveDepartment(departmentId: string) {
  return apiRequestData<DepartmentMutationResponse>(`/api/departments/${departmentId}/archive`, {
    method: "POST",
    body: JSON.stringify({}),
  });
}