feat: mail service

mail/internal/api/internalhttp/handler.go

@@ -0,0 +1,63 @@
+package internalhttp
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+
+	"galaxy/mail/internal/service/acceptauthdelivery"
+)
+
+// AcceptLoginCodeDeliveryUseCase accepts one auth login-code delivery request.
+type AcceptLoginCodeDeliveryUseCase interface {
+	// Execute durably accepts one normalized auth login-code delivery command.
+	Execute(context.Context, acceptauthdelivery.Input) (acceptauthdelivery.Result, error)
+}
+
+func newAcceptLoginCodeDeliveryHandler(useCase AcceptLoginCodeDeliveryUseCase) http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		ctx := request.Context()
+
+		command, err := DecodeLoginCodeDeliveryCommand(request)
+		if err != nil {
+			writeErrorResponse(writer, http.StatusBadRequest, ErrorCodeInvalidRequest, err.Error())
+			return
+		}
+
+		result, err := useCase.Execute(ctx, acceptauthdelivery.Input{
+			IdempotencyKey: command.IdempotencyKey,
+			Email:          command.Email,
+			Code:           command.Code,
+			Locale:         command.Locale,
+		})
+		if err != nil {
+			switch {
+			case errors.Is(err, acceptauthdelivery.ErrConflict):
+				writeErrorResponse(writer, http.StatusConflict, ErrorCodeConflict, "request conflicts with current state")
+			case errors.Is(err, acceptauthdelivery.ErrServiceUnavailable):
+				writeErrorResponse(writer, http.StatusServiceUnavailable, ErrorCodeServiceUnavailable, "service is unavailable")
+			default:
+				writeErrorResponse(writer, http.StatusInternalServerError, ErrorCodeInternalError, "internal server error")
+			}
+			return
+		}
+
+		if err := result.Validate(); err != nil {
+			writeErrorResponse(writer, http.StatusInternalServerError, ErrorCodeInternalError, "internal server error")
+			return
+		}
+
+		response := LoginCodeDeliveryResponse{
+			Outcome: LoginCodeDeliveryOutcome(result.Outcome),
+		}
+		if err := response.Validate(); err != nil {
+			writeErrorResponse(writer, http.StatusInternalServerError, ErrorCodeInternalError, "internal server error")
+			return
+		}
+
+		writer.Header().Set("Content-Type", "application/json")
+		writer.WriteHeader(http.StatusOK)
+		_ = json.NewEncoder(writer).Encode(response)
+	}
+}