import 'package:flutter/material.dart';
import 'package:superport/models/company_model.dart';
import 'package:superport/models/user_model.dart';
import 'package:superport/services/mock_data_service.dart';
import 'package:superport/utils/constants.dart';
import 'package:superport/models/user_phone_field.dart';

// 사용자 폼의 상태 및 비즈니스 로직을 담당하는 컨트롤러
class UserFormController {
  final MockDataService dataService;
  final GlobalKey<FormState> formKey = GlobalKey<FormState>();

  bool isEditMode = false;
  int? userId;
  String name = '';
  int? companyId;
  int? branchId;
  String role = UserRoles.member;
  String position = '';
  String email = '';

  // 전화번호 관련 상태
  final List<UserPhoneField> phoneFields = [];
  final List<String> phoneTypes = ['휴대폰', '사무실', '팩스', '기타'];

  List<Company> companies = [];
  List<Branch> branches = [];

  UserFormController({required this.dataService, this.userId});

  // 회사 목록 로드
  void loadCompanies() {
    companies = dataService.getAllCompanies();
  }

  // 회사 ID에 따라 지점 목록 로드
  void loadBranches(int companyId) {
    final company = dataService.getCompanyById(companyId);
    branches = company?.branches ?? [];
    // 지점 변경 시 이전 선택 지점이 새 회사에 없으면 초기화
    if (branchId != null && !branches.any((b) => b.id == branchId)) {
      branchId = null;
    }
  }

  // 사용자 정보 로드 (수정 모드)
  void loadUser() {
    if (userId == null) return;
    final user = dataService.getUserById(userId!);
    if (user != null) {
      name = user.name;
      companyId = user.companyId;
      branchId = user.branchId;
      role = user.role;
      position = user.position ?? '';
      email = user.email ?? '';
      if (companyId != null) {
        loadBranches(companyId!);
      }
      phoneFields.clear();
      if (user.phoneNumbers.isNotEmpty) {
        for (var phone in user.phoneNumbers) {
          phoneFields.add(
            UserPhoneField(
              type: phone['type'] ?? '휴대폰',
              initialValue: phone['number'] ?? '',
            ),
          );
        }
      } else {
        addPhoneField();
      }
    }
  }

  // 전화번호 필드 추가
  void addPhoneField() {
    phoneFields.add(UserPhoneField(type: '휴대폰'));
  }

  // 전화번호 필드 삭제
  void removePhoneField(int index) {
    if (phoneFields.length > 1) {
      phoneFields[index].dispose();
      phoneFields.removeAt(index);
    }
  }

  // 사용자 저장 (UI에서 호출)
  void saveUser(Function(String? error) onResult) {
    if (formKey.currentState?.validate() != true) {
      onResult('폼 유효성 검사 실패');
      return;
    }
    formKey.currentState?.save();
    if (companyId == null) {
      onResult('소속 회사를 선택해주세요');
      return;
    }
    // 전화번호 목록 준비 (UserPhoneField 기반)
    List<Map<String, String>> phoneNumbersList = [];
    for (var phoneField in phoneFields) {
      if (phoneField.number.isNotEmpty) {
        phoneNumbersList.add({
          'type': phoneField.type,
          'number': phoneField.number,
        });
      }
    }
    if (isEditMode && userId != null) {
      final user = dataService.getUserById(userId!);
      if (user != null) {
        final updatedUser = User(
          id: user.id,
          companyId: companyId!,
          branchId: branchId,
          name: name,
          role: role,
          position: position.isNotEmpty ? position : null,
          email: email.isNotEmpty ? email : null,
          phoneNumbers: phoneNumbersList,
        );
        dataService.updateUser(updatedUser);
      }
    } else {
      final newUser = User(
        companyId: companyId!,
        branchId: branchId,
        name: name,
        role: role,
        position: position.isNotEmpty ? position : null,
        email: email.isNotEmpty ? email : null,
        phoneNumbers: phoneNumbersList,
      );
      dataService.addUser(newUser);
    }
    onResult(null);
  }

  // 컨트롤러 해제
  void dispose() {
    for (var phoneField in phoneFields) {
      phoneField.dispose();
    }
  }
}