package com.lianda.backend.controller;

import com.lianda.backend.annotation.RequirePermission;
import com.lianda.backend.dto.PageResponse;
import com.lianda.backend.dto.UserCreateDTO;
import com.lianda.backend.dto.UserDTO;
import com.lianda.backend.dto.UserQueryDTO;
import com.lianda.backend.dto.UserSaveDTO;
import com.lianda.backend.model.SysDictionaryItem;
import com.lianda.backend.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("/user")
public class UserController {
    
    @Autowired
    private UserService userService;
    
    /**
     * 查询用户列表
     *
     * @param queryDTO 查询条件
     * @return 分页结果
     */
    @GetMapping("/list")
    @RequirePermission("0101")
    public ResponseEntity<Map<String, Object>> getUsers(UserQueryDTO queryDTO) {
        PageResponse<UserDTO> users = userService.queryUsers(queryDTO);
        Map<String, Object> response = new HashMap<>();
        response.put("success", true);
        response.put("data", users);
        return new ResponseEntity<>(response, HttpStatus.OK);
    }
    
    /**
     * 获取所有状态列表
     *
     * @return 状态列表
     */
    @GetMapping("/record-status")
    @RequirePermission("010102")
    public ResponseEntity<List<SysDictionaryItem>> getRecordStatus() {
        List<SysDictionaryItem> recordStatusList = userService.getRecordStatusList();
        return new ResponseEntity<>(recordStatusList, HttpStatus.OK);
    }
    
    /**
     * 保存用户（新增或修改）
     *
     * @param userSaveDTO 用户保存DTO
     * @return 保存后的用户DTO
     */
    @PostMapping("/save")
    @RequirePermission("0104")
    public ResponseEntity<Map<String, Object>> saveUser(@Valid @RequestBody UserSaveDTO userSaveDTO) {
        try {
            UserDTO userDTO = userService.saveUser(userSaveDTO);
            Map<String, Object> response = new HashMap<>();
            response.put("success", true);
            response.put("message", userSaveDTO.getId() == null || userSaveDTO.getId().isEmpty() ? "用户创建成功" : "用户更新成功");
            response.put("data", userDTO);
            return new ResponseEntity<>(response, HttpStatus.OK);
        } catch (Exception e) {
            Map<String, Object> response = new HashMap<>();
            response.put("success", false);
            response.put("message", userSaveDTO.getId() == null || userSaveDTO.getId().isEmpty() ? "用户创建失败：" + e.getMessage() : "用户更新失败：" + e.getMessage());
            return new ResponseEntity<>(response, HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }
    
    /**
     * 删除用户
     *
     * @param userIds 用户ID列表
     * @return 操作结果
     */
    @DeleteMapping("/delete")
    @RequirePermission("0102")
    public ResponseEntity<Map<String, Object>> deleteUsers(@RequestBody List<String> userIds) {
        if (userIds == null || userIds.isEmpty()) {
            Map<String, Object> response = new HashMap<>();
            response.put("success", false);
            response.put("message", "用户ID不能为空");
            return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
        }
        
        try {
            userService.deleteUsers(userIds);
            Map<String, Object> response = new HashMap<>();
            response.put("success", true);
            response.put("message", "删除成功");
            response.put("deletedCount", userIds.size());
            return new ResponseEntity<>(response, HttpStatus.OK);
        } catch (Exception e) {
            Map<String, Object> response = new HashMap<>();
            response.put("success", false);
            response.put("message", "删除失败：" + e.getMessage());
            return new ResponseEntity<>(response, HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }
    
    /**
     * 重置用户密码
     *
     * @param userId 用户ID
     * @param newPassword 新密码
     * @return 操作结果
     */
    @PostMapping("/reset-password")
    @RequirePermission("0103")
    public ResponseEntity<Map<String, Object>> resetPassword(@RequestBody Map<String, String> request) {
        String userId = request.get("userId");
        String newPassword = request.get("newPassword");
        
        if (userId == null || userId.isEmpty()) {
            Map<String, Object> response = new HashMap<>();
            response.put("success", false);
            response.put("message", "用户ID不能为空");
            return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
        }
        
        if (newPassword == null || newPassword.isEmpty()) {
            Map<String, Object> response = new HashMap<>();
            response.put("success", false);
            response.put("message", "新密码不能为空");
            return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
        }
        
        try {
            userService.resetPassword(userId, newPassword);
            Map<String, Object> response = new HashMap<>();
            response.put("success", true);
            response.put("message", "密码重置成功");
            return new ResponseEntity<>(response, HttpStatus.OK);
        } catch (Exception e) {
            Map<String, Object> response = new HashMap<>();
            response.put("success", false);
            response.put("message", "密码重置失败：" + e.getMessage());
            return new ResponseEntity<>(response, HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }
}