feat: auth handlers

internal/api/http/handlers/auth_handler.go

@@ -0,0 +1,90 @@
+package http
+
+import (
+	"backend/internal/api/dto"
+	"backend/internal/domain"
+	"backend/internal/usecase"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/google/uuid"
+)
+
+type AuthHandler struct {
+	authService usecase.AuthService
+}
+
+func NewAuthHandler(authService *usecase.AuthService) *AuthHandler {
+	return &AuthHandler{
+		authService: *authService,
+	}
+}
+
+func (h *AuthHandler) GenerateChallenge(c *fiber.Ctx) error {
+	var req dto.ChallengeRequest
+	if err := c.BodyParser(&req); err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "invalid request body",
+		})
+	}
+	challenge, err := h.authService.GenerateChallenge(c.Context(), req.PubKey)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+			"error": "failed to generate challenge",
+		})
+	}
+	return c.Status(fiber.StatusOK).JSON(
+		dto.ChallengeResponse{
+			Message:   challenge.Message.String(),
+			TimeStamp: challenge.TimeStamp.String(),
+			ExpiresAt: challenge.ExpiresAt.String(),
+		},
+	)
+}
+
+func (h *AuthHandler) Authenticate(c *fiber.Ctx) error {
+	var req dto.AuthenticateRequest
+	if err := c.BodyParser(&req); err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "invalid request body",
+		})
+	}
+
+	messageUUID, err := uuid.Parse(req.Message)
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "invalid message format",
+		})
+	}
+
+	challenge := &domain.Challenge{
+		Message:   messageUUID,
+		TimeStamp: time.Now().UTC(),
+		ExpiresAt: time.Now().Add(5 * time.Minute),
+	}
+
+	clientIP := c.IP()
+	userAgent := c.Get("User-Agent")
+
+	userToken, err := h.authService.Authenticate(
+		c.Context(),
+		req.PubKey,
+		req.Signature,
+		challenge,
+		// add chainID to cfg
+		1,
+		clientIP,
+		userAgent,
+	)
+	if err != nil {
+		return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{
+			"error": err.Error(),
+		})
+	}
+
+	return c.Status(fiber.StatusOK).JSON(dto.AuthenticateResponse{
+		AuthorizationToken: userToken.AuthorizationToken,
+		RefreshToken:       userToken.RefreshToken,
+		ExpiresAt:          userToken.ExpiresAt,
+	})
+}