a301_server/internal/auth/handler.go

package auth

import (
	"strings"

	"github.com/gofiber/fiber/v2"
)

type Handler struct {
	svc *Service
}

func NewHandler(svc *Service) *Handler {
	return &Handler{svc: svc}
}

func (h *Handler) Register(c *fiber.Ctx) error {
	var req struct {
		Username string `json:"username"`
		Password string `json:"password"`
	}
	if err := c.BodyParser(&req); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "잘못된 요청입니다"})
	}
	req.Username = strings.ToLower(strings.TrimSpace(req.Username))
	if req.Username == "" || req.Password == "" {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "아이디와 비밀번호를 입력해주세요"})
	}
	if len(req.Password) < 6 {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "비밀번호는 6자 이상이어야 합니다"})
	}
	if err := h.svc.Register(req.Username, req.Password); err != nil {
		return c.Status(fiber.StatusConflict).JSON(fiber.Map{"error": err.Error()})
	}
	return c.Status(fiber.StatusCreated).JSON(fiber.Map{"message": "회원가입이 완료되었습니다"})
}

func (h *Handler) Login(c *fiber.Ctx) error {
	var req struct {
		Username string `json:"username"`
		Password string `json:"password"`
	}
	if err := c.BodyParser(&req); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "잘못된 요청입니다"})
	}
	req.Username = strings.ToLower(strings.TrimSpace(req.Username))
	if req.Username == "" || req.Password == "" {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "아이디와 비밀번호를 입력해주세요"})
	}

	accessToken, refreshToken, user, err := h.svc.Login(req.Username, req.Password)
	if err != nil {
		return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{"error": err.Error()})
	}

	return c.JSON(fiber.Map{
		"token":        accessToken,
		"refreshToken": refreshToken,
		"username":     user.Username,
		"role":         user.Role,
	})
}

func (h *Handler) Refresh(c *fiber.Ctx) error {
	var req struct {
		RefreshToken string `json:"refreshToken"`
	}
	if err := c.BodyParser(&req); err != nil || req.RefreshToken == "" {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "refreshToken 필드가 필요합니다"})
	}

	newAccessToken, newRefreshToken, err := h.svc.Refresh(req.RefreshToken)
	if err != nil {
		return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{"error": err.Error()})
	}

	return c.JSON(fiber.Map{
		"token":        newAccessToken,
		"refreshToken": newRefreshToken,
	})
}

func (h *Handler) Logout(c *fiber.Ctx) error {
	userID := c.Locals("userID").(uint)
	if err := h.svc.Logout(userID); err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "로그아웃 처리 중 오류가 발생했습니다"})
	}
	return c.JSON(fiber.Map{"message": "로그아웃 되었습니다"})
}

func (h *Handler) GetAllUsers(c *fiber.Ctx) error {
	users, err := h.svc.GetAllUsers()
	if err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "유저 목록을 불러오지 못했습니다"})
	}
	return c.JSON(users)
}

func (h *Handler) UpdateRole(c *fiber.Ctx) error {
	var body struct {
		Role string `json:"role"`
	}
	if err := c.BodyParser(&body); err != nil || (body.Role != "admin" && body.Role != "user") {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "role은 admin 또는 user여야 합니다"})
	}
	if err := h.svc.UpdateRole(c.Params("id"), Role(body.Role)); err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "권한 변경에 실패했습니다"})
	}
	return c.JSON(fiber.Map{"message": "권한이 변경되었습니다"})
}

func (h *Handler) VerifyToken(c *fiber.Ctx) error {
	var req struct {
		Token string `json:"token"`
	}
	if err := c.BodyParser(&req); err != nil || req.Token == "" {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "token 필드가 필요합니다"})
	}

	username, err := h.svc.VerifyToken(req.Token)
	if err != nil {
		return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{"error": err.Error()})
	}

	return c.JSON(fiber.Map{
		"username": username,
	})
}

func (h *Handler) SSAFYLoginURL(c *fiber.Ctx) error {
	loginURL := h.svc.GetSSAFYLoginURL()
	return c.JSON(fiber.Map{"url": loginURL})
}

func (h *Handler) SSAFYCallback(c *fiber.Ctx) error {
	var req struct {
		Code string `json:"code"`
	}
	if err := c.BodyParser(&req); err != nil || req.Code == "" {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"error": "인가 코드가 필요합니다"})
	}

	accessToken, refreshToken, user, err := h.svc.SSAFYLogin(req.Code)
	if err != nil {
		return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{"error": err.Error()})
	}

	return c.JSON(fiber.Map{
		"token":        accessToken,
		"refreshToken": refreshToken,
		"username":     user.Username,
		"role":         user.Role,
	})
}

func (h *Handler) DeleteUser(c *fiber.Ctx) error {
	if err := h.svc.DeleteUser(c.Params("id")); err != nil {
		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "유저 삭제에 실패했습니다"})
	}
	return c.SendStatus(fiber.StatusNoContent)
}