初始化
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298
FutureMailAPI/Services/UserService.cs
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298
FutureMailAPI/Services/UserService.cs
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using Microsoft.EntityFrameworkCore;
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using FutureMailAPI.Data;
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using FutureMailAPI.Models;
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using FutureMailAPI.DTOs;
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using FutureMailAPI.Helpers;
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namespace FutureMailAPI.Services
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{
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public interface IUserService
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{
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Task<ApiResponse<UserResponseDto>> RegisterAsync(UserRegisterDto registerDto);
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Task<ApiResponse<AuthResponseDto>> LoginAsync(UserLoginDto loginDto);
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Task<ApiResponse<UserResponseDto>> GetUserByIdAsync(int userId);
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Task<ApiResponse<UserResponseDto>> GetUserByUsernameAsync(string username);
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Task<ApiResponse<UserResponseDto>> GetUserByEmailAsync(string email);
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Task<ApiResponse<UserResponseDto>> GetUserByUsernameOrEmailAsync(string usernameOrEmail);
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Task<ApiResponse<UserResponseDto>> UpdateUserAsync(int userId, UserUpdateDto updateDto);
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Task<ApiResponse<bool>> ChangePasswordAsync(int userId, ChangePasswordDto changePasswordDto);
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Task<ApiResponse<UserResponseDto>> CreateUserAsync(UserRegisterDto registerDto);
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}
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public class UserService : IUserService
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{
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private readonly FutureMailDbContext _context;
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private readonly IPasswordHelper _passwordHelper;
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public UserService(FutureMailDbContext context, IPasswordHelper passwordHelper)
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{
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_context = context;
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_passwordHelper = passwordHelper;
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}
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public async Task<ApiResponse<UserResponseDto>> RegisterAsync(UserRegisterDto registerDto)
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{
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// 检查用户名是否已存在
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var existingUserByUsername = await _context.Users
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.FirstOrDefaultAsync(u => u.Username == registerDto.Username);
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if (existingUserByUsername != null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户名已存在");
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}
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// 检查邮箱是否已存在
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var existingUserByEmail = await _context.Users
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.FirstOrDefaultAsync(u => u.Email == registerDto.Email);
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if (existingUserByEmail != null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("邮箱已被注册");
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}
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// 生成随机盐值
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var salt = _passwordHelper.GenerateSalt();
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// 创建新用户
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var user = new User
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{
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Username = registerDto.Username,
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Email = registerDto.Email,
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PasswordHash = _passwordHelper.HashPassword(registerDto.Password, salt),
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Salt = salt,
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Nickname = registerDto.Nickname ?? registerDto.Username,
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CreatedAt = DateTime.UtcNow
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};
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_context.Users.Add(user);
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await _context.SaveChangesAsync();
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto, "注册成功");
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}
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public async Task<ApiResponse<AuthResponseDto>> LoginAsync(UserLoginDto loginDto)
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{
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// 查找用户（通过用户名或邮箱）
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User? user;
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if (loginDto.UsernameOrEmail.Contains("@"))
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{
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user = await _context.Users
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.FirstOrDefaultAsync(u => u.Email == loginDto.UsernameOrEmail);
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}
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else
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{
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user = await _context.Users
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.FirstOrDefaultAsync(u => u.Username == loginDto.UsernameOrEmail);
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}
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if (user == null)
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{
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return ApiResponse<AuthResponseDto>.ErrorResult("用户名或密码错误");
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}
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// 验证密码
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if (!_passwordHelper.VerifyPassword(loginDto.Password, user.PasswordHash))
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{
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return ApiResponse<AuthResponseDto>.ErrorResult("用户名或密码错误");
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}
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// 更新最后登录时间
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user.LastLoginAt = DateTime.UtcNow;
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await _context.SaveChangesAsync();
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// 注意：这里不再生成JWT令牌，因为我们将使用OAuth 2.0
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// 在OAuth 2.0流程中，令牌是通过OAuth端点生成的
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var authResponse = new AuthResponseDto
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{
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Token = "", // 临时空字符串，实际使用OAuth 2.0令牌
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Expires = DateTime.UtcNow.AddDays(7),
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User = MapToUserResponseDto(user)
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};
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return ApiResponse<AuthResponseDto>.SuccessResult(authResponse, "登录成功");
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}
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public async Task<ApiResponse<UserResponseDto>> GetUserByIdAsync(int userId)
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{
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var user = await _context.Users
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.FirstOrDefaultAsync(u => u.Id == userId);
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if (user == null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户不存在");
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}
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto);
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}
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public async Task<ApiResponse<UserResponseDto>> GetUserByUsernameAsync(string username)
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{
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var user = await _context.Users
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.FirstOrDefaultAsync(u => u.Username == username);
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if (user == null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户不存在");
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}
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto);
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}
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public async Task<ApiResponse<UserResponseDto>> GetUserByEmailAsync(string email)
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{
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var user = await _context.Users
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.FirstOrDefaultAsync(u => u.Email == email);
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if (user == null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户不存在");
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}
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto);
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}
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public async Task<ApiResponse<UserResponseDto>> GetUserByUsernameOrEmailAsync(string usernameOrEmail)
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{
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User? user;
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if (usernameOrEmail.Contains("@"))
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{
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user = await _context.Users
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.FirstOrDefaultAsync(u => u.Email == usernameOrEmail);
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}
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else
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{
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user = await _context.Users
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.FirstOrDefaultAsync(u => u.Username == usernameOrEmail);
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}
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if (user == null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户不存在");
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}
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto);
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}
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public async Task<ApiResponse<UserResponseDto>> UpdateUserAsync(int userId, UserUpdateDto updateDto)
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{
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var user = await _context.Users
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.FirstOrDefaultAsync(u => u.Id == userId);
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if (user == null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户不存在");
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}
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// 更新用户信息
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if (updateDto.Nickname != null)
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{
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user.Nickname = updateDto.Nickname;
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}
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if (updateDto.Avatar != null)
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{
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user.Avatar = updateDto.Avatar;
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}
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await _context.SaveChangesAsync();
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto, "更新成功");
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}
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public async Task<ApiResponse<bool>> ChangePasswordAsync(int userId, ChangePasswordDto changePasswordDto)
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{
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var user = await _context.Users
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.FirstOrDefaultAsync(u => u.Id == userId);
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if (user == null)
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{
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return ApiResponse<bool>.ErrorResult("用户不存在");
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}
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// 验证当前密码
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if (!_passwordHelper.VerifyPassword(changePasswordDto.CurrentPassword, user.PasswordHash))
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{
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return ApiResponse<bool>.ErrorResult("当前密码错误");
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}
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// 更新密码
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var salt = _passwordHelper.GenerateSalt();
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user.PasswordHash = _passwordHelper.HashPassword(changePasswordDto.NewPassword, salt);
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user.Salt = salt;
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await _context.SaveChangesAsync();
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return ApiResponse<bool>.SuccessResult(true, "密码修改成功");
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}
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public async Task<ApiResponse<UserResponseDto>> CreateUserAsync(UserRegisterDto registerDto)
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{
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// 检查用户名是否已存在
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var existingUserByUsername = await _context.Users
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.FirstOrDefaultAsync(u => u.Username == registerDto.Username);
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if (existingUserByUsername != null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("用户名已存在");
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}
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// 检查邮箱是否已存在
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var existingUserByEmail = await _context.Users
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.FirstOrDefaultAsync(u => u.Email == registerDto.Email);
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if (existingUserByEmail != null)
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{
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return ApiResponse<UserResponseDto>.ErrorResult("邮箱已被注册");
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}
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// 生成随机盐值
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var salt = _passwordHelper.GenerateSalt();
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// 创建新用户
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var user = new User
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{
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Username = registerDto.Username,
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Email = registerDto.Email,
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PasswordHash = _passwordHelper.HashPassword(registerDto.Password, salt),
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Salt = salt,
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Nickname = registerDto.Nickname ?? registerDto.Username,
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CreatedAt = DateTime.UtcNow
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};
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_context.Users.Add(user);
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await _context.SaveChangesAsync();
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var userDto = MapToUserResponseDto(user);
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return ApiResponse<UserResponseDto>.SuccessResult(userDto, "用户创建成功");
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}
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private static UserResponseDto MapToUserResponseDto(User user)
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{
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return new UserResponseDto
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{
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Id = user.Id,
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Username = user.Username,
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Email = user.Email,
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Nickname = user.Nickname,
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Avatar = user.Avatar,
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CreatedAt = user.CreatedAt,
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LastLoginAt = user.LastLoginAt
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};
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}
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}
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}
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