import { areMocksEnabled } from "@/mocks/env";

export type MockDepartment = {
  id: string;
  code: string;
  name: string;
};

const seedDepartments: MockDepartment[] = [
  { id: "dept-1", code: "OPS", name: "Operations" },
  { id: "dept-2", code: "FIN", name: "Finance" },
  { id: "dept-3", code: "ENG", name: "Engineering" },
  { id: "dept-4", code: "ADM", name: "Administration" },
];

let departmentStore: MockDepartment[] = seedDepartments.map((department) => ({ ...department }));

export function getMockDepartments(): MockDepartment[] {
  if (!areMocksEnabled()) {
    return [];
  }
  return departmentStore.map((department) => ({ ...department }));
}

export function getMockDepartment(id: string): MockDepartment | undefined {
  return getMockDepartments().find((department) => department.id === id);
}

export function upsertMockDepartment(department: MockDepartment): MockDepartment {
  const index = departmentStore.findIndex((row) => row.id === department.id);
  const next = { ...department };
  if (index === -1) {
    departmentStore = [...departmentStore, next];
  } else {
    departmentStore = [
      ...departmentStore.slice(0, index),
      next,
      ...departmentStore.slice(index + 1),
    ];
  }
  return { ...next };
}

export function resetMockDepartments(): void {
  departmentStore = seedDepartments.map((department) => ({ ...department }));
}