// File: lib/services/correspondence.service.ts
import apiClient from '@/lib/api/client';
import { SearchCorrespondenceDto } from '@/types/dto/correspondence/search-correspondence.dto';
import { CreateCorrespondenceDto } from '@/types/dto/correspondence/create-correspondence.dto';
// Import DTO ใหม่
import { SubmitCorrespondenceDto } from '@/types/dto/correspondence/submit-correspondence.dto';
import { WorkflowActionDto } from '@/types/dto/correspondence/workflow-action.dto';
import { AddReferenceDto } from '@/types/dto/correspondence/add-reference.dto';

export const correspondenceService = {
  // ... (getAll, getById, create, update, delete เดิมคงไว้) ...

  getAll: async (params?: SearchCorrespondenceDto) => {
    const response = await apiClient.get('/correspondences', { params });
    return response.data;
  },

  getByUuid: async (uuid: string) => {
    const response = await apiClient.get(`/correspondences/${uuid}`);
    return response.data.data; // Unwrap NestJS Interceptor 'data' wrapper
  },

  create: async (data: CreateCorrespondenceDto) => {
    const response = await apiClient.post('/correspondences', data);
    return response.data;
  },

  update: async (uuid: string, data: Partial<CreateCorrespondenceDto>) => {
    const response = await apiClient.put(`/correspondences/${uuid}`, data);
    return response.data;
  },

  delete: async (uuid: string) => {
    const response = await apiClient.delete(`/correspondences/${uuid}`);
    return response.data;
  },

  cancel: async (uuid: string, reason: string) => {
    const response = await apiClient.delete(`/correspondences/${uuid}`, {
      data: { reason },
    });
    return response.data;
  },

  // --- 🔥 New Methods ---

  /**
   * ส่งเอกสาร (Submit) เพื่อเริ่ม Workflow
   */
  submit: async (uuid: string, data: SubmitCorrespondenceDto) => {
    const response = await apiClient.post(`/correspondences/${uuid}/submit`, data);
    return response.data;
  },

  /**
   * ดำเนินการ Workflow (เช่น Approve, Reject) ในขั้นตอนปัจจุบัน
   */
  processWorkflow: async (uuid: string, data: WorkflowActionDto) => {
    const response = await apiClient.post(`/correspondences/${uuid}/workflow`, data);
    return response.data;
  },

  /**
   * ดึงรายการเอกสารอ้างอิง
   */
  getReferences: async (uuid: string) => {
    const response = await apiClient.get(`/correspondences/${uuid}/references`);
    return response.data;
  },

  /**
   * เพิ่มเอกสารอ้างอิง
   */
  addReference: async (uuid: string, data: AddReferenceDto) => {
    const response = await apiClient.post(`/correspondences/${uuid}/references`, data);
    return response.data;
  },

  /**
   * ลบเอกสารอ้างอิง (ใช้ path param ตาม backend: DELETE /:uuid/references/:targetUuid)
   */
  removeReference: async (uuid: string, targetUuid: string) => {
    const response = await apiClient.delete(`/correspondences/${uuid}/references/${targetUuid}`);
    return response.data;
  },
  /**
   * ดึง Tags ของ correspondence
   */
  getTags: async (uuid: string) => {
    const response = await apiClient.get(`/correspondences/${uuid}/tags`);
    return response.data;
  },

  /**
   * เพิ่ม Tag ให้ correspondence
   */
  addTag: async (uuid: string, tagId: number) => {
    const response = await apiClient.post(`/correspondences/${uuid}/tags/${tagId}`);
    return response.data;
  },

  /**
   * ลบ Tag ออกจาก correspondence
   */
  removeTag: async (uuid: string, tagId: number) => {
    const response = await apiClient.delete(`/correspondences/${uuid}/tags/${tagId}`);
    return response.data;
  },

  /**
   * Preview Document Number
   */
  previewNumber: async (data: Partial<CreateCorrespondenceDto>) => {
    const response = await apiClient.post('/correspondences/preview-number', data);
    return response.data;
  },
};