package nju.seec.helper.controller;

import nju.seec.helper.aspect.auth.Auth;
import nju.seec.helper.dto.LoginDTO;
import nju.seec.helper.dto.LoginUser;
import nju.seec.helper.dto.ResetPasswordDTO;
import nju.seec.helper.dto.UserDTO;
import nju.seec.helper.dto.groups.Create;
import nju.seec.helper.dto.groups.Modify;
import nju.seec.helper.service.UserService;
import nju.seec.helper.util.Consts;
import nju.seec.helper.util.enums.UserType;
import nju.seec.helper.vo.UserVO;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpSession;

/**
 * 用户
 *
 * @author cst
 */
@RestController
@RequestMapping("/api/user")
public class UserController {
    private final UserService userService;

    public UserController(UserService userService) {
        this.userService = userService;
    }

    /**
     * 注册
     */
    @PostMapping("/register")
    public UserVO register(@Validated(Create.class) @RequestBody UserDTO userDTO) {
        return userService.createUser(userDTO);
    }

    /**
     * 邮箱登录
     */
    @PostMapping("/login/email")
    public UserVO loginByEmail(@Validated @RequestBody LoginDTO loginDTO,
                               HttpSession session) {
        UserVO userVO = userService.getUserByEmailAndPassword(loginDTO.getUsername(), loginDTO.getPassword());

        LoginUser user = new LoginUser()
                .setId(userVO.getId())
                .setName(userVO.getName())
                .setType(userVO.getType());

        session.setAttribute(Consts.SESSION_USER_NAME, user);
        // 3小时有效期
        session.setMaxInactiveInterval(3 * 60 * 60);
        return userVO;
    }

    /**
     * 登出
     */
    @Auth(roles = {UserType.TEACHER, UserType.STUDENT}, message = "登出")
    @PostMapping("/logout")
    public void logout(HttpSession session) {
        session.removeAttribute(Consts.SESSION_USER_NAME);
    }

    /**
     * 修改个人信息
     */
    @Auth(roles = {UserType.TEACHER, UserType.STUDENT}, message = "修改个人信息")
    @PutMapping
    public UserVO modifyUser(LoginUser user,
                             @Validated(Modify.class) @RequestBody UserDTO userDTO,
                             HttpSession session) {
        UserVO userVO = userService.modifyUser(user, userDTO);
        user = ((LoginUser) session.getAttribute(Consts.SESSION_USER_NAME))
                .setId(userVO.getId())
                .setName(userVO.getName())
                .setType(userVO.getType());
        session.setAttribute(Consts.SESSION_USER_NAME, user);
        return userVO;
    }

    /**
     * 重设密码
     */
    @PutMapping("/resetPassword/email")
    public void resetPasswordByEmail(@Validated @RequestBody ResetPasswordDTO resetPasswordDTO) {
        userService.resetPasswordByEmail(resetPasswordDTO);
    }

    /**
     * 获取个人信息
     */
    @Auth(roles = {UserType.TEACHER, UserType.STUDENT}, message = "获取个人信息")
    @GetMapping
    public UserVO getUserInfo(LoginUser user) {
        return userService.getUserById(user.getId());
    }
}