Backend half

SerpentRace_Backend/src/Database/mappers/user.mapper.ts

@@ -0,0 +1,49 @@
+import { User } from '../entities/user.entity';
+import { UserBasicDto, UserUpdateDto, UserCreateDto, UserResponseDto } from '../dto/user.dto';
+
+export class UserMapper {
+  static toBasicDto(user: User): UserBasicDto {
+    return new UserBasicDto(user.id, user.username, user.CompanyId || undefined);
+  }
+
+  static toResponseDto(user: User): UserResponseDto {
+    return new UserResponseDto(
+      user.id,
+      user.username,
+      user.FirstName,
+      user.LastName,
+      user.email,
+      user.RegDate
+    );
+  }
+  static toEntity(createDto: UserCreateDto): User {
+    const user = new User();
+    user.username = createDto.username;
+    user.FirstName = createDto.FirstName;
+    user.LastName = createDto.LastName;
+    user.email = createDto.email;
+    user.password = createDto.password;
+    
+    // Only set CompanyId if it's provided and not null/undefined
+    if (createDto.CompanyId !== undefined && createDto.CompanyId !== null) {
+      user.CompanyId = createDto.CompanyId;
+    }
+    // If not provided, leave it as undefined (which will be NULL in database)
+    
+    return user;
+  }
+
+  static updateEntity(original: User, updateDto: UserUpdateDto): User {
+    if (updateDto.username !== undefined) original.username = updateDto.username;
+    if (updateDto.FirstName !== undefined) original.FirstName = updateDto.FirstName;
+    if (updateDto.LastName !== undefined) original.LastName = updateDto.LastName;
+    if (updateDto.email !== undefined) original.email = updateDto.email;
+    if (updateDto.password !== undefined) original.password = updateDto.password;
+    
+    return original;
+  }
+
+  static UsersListResponseDto(users: User[]): UserResponseDto[] {
+    return users.map(user => this.toResponseDto(user));
+  }
+}