feat: change email, export my data, delete account (with data anonymization)

api/handlers/auth/emailChangeHandler.go

@@ -0,0 +1,151 @@
+package auth
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	"RenewCMS/api/pkg/claims"
+	validator "RenewCMS/api/pkg/validator"
+	"RenewCMS/internal/domain/user"
+	"RenewCMS/internal/infrastructure/useCases"
+	"encoding/json"
+	"errors"
+	"net/http"
+)
+
+type EmailChangeHandler struct {
+	RequestUseCase *useCases.RequestEmailChangeUseCase
+	ResendUseCase  *useCases.ResendEmailChangeUseCase
+	CancelUseCase  *useCases.CancelEmailChangeUseCase
+	ConfirmUseCase *useCases.ConfirmEmailChangeUseCase
+}
+
+type RequestEmailChangeCredentials struct {
+	NewEmail        string `json:"new_email" validate:"required,max=255,inviteemail"`
+	CurrentPassword string `json:"current_password" validate:"required"`
+}
+
+type ConfirmEmailChangeCredentials struct {
+	Code string `json:"code" validate:"required"`
+}
+
+func NewEmailChangeHandler(request *useCases.RequestEmailChangeUseCase, resend *useCases.ResendEmailChangeUseCase, cancel *useCases.CancelEmailChangeUseCase, confirm *useCases.ConfirmEmailChangeUseCase) *EmailChangeHandler {
+	return &EmailChangeHandler{
+		RequestUseCase: request,
+		ResendUseCase:  resend,
+		CancelUseCase:  cancel,
+		ConfirmUseCase: confirm,
+	}
+}
+
+func (h *EmailChangeHandler) Request(w http.ResponseWriter, r *http.Request) {
+	var credentials RequestEmailChangeCredentials
+	if err := json.NewDecoder(r.Body).Decode(&credentials); err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+	if err := validator.Validate.Struct(credentials); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	userId, ok := claims.UserId(r)
+	if !ok {
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+		return
+	}
+
+	pending, err := h.RequestUseCase.RequestEmailChange(r.Context(), useCases.RequestEmailChangeCommand{
+		UserID:          userId,
+		NewEmail:        credentials.NewEmail,
+		CurrentPassword: credentials.CurrentPassword,
+	})
+	if err != nil {
+		writeEmailChangeError(w, err)
+		return
+	}
+	writePendingEmail(w, pending)
+}
+
+func (h *EmailChangeHandler) Resend(w http.ResponseWriter, r *http.Request) {
+	userId, ok := claims.UserId(r)
+	if !ok {
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+		return
+	}
+
+	pending, err := h.ResendUseCase.ResendEmailChange(r.Context(), userId)
+	if err != nil {
+		writeEmailChangeError(w, err)
+		return
+	}
+	writePendingEmail(w, pending)
+}
+
+func (h *EmailChangeHandler) Cancel(w http.ResponseWriter, r *http.Request) {
+	userId, ok := claims.UserId(r)
+	if !ok {
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+		return
+	}
+
+	if err := h.CancelUseCase.CancelEmailChange(r.Context(), userId); err != nil {
+		writeEmailChangeError(w, err)
+		return
+	}
+	w.WriteHeader(http.StatusNoContent)
+}
+
+func (h *EmailChangeHandler) Confirm(w http.ResponseWriter, r *http.Request) {
+	var credentials ConfirmEmailChangeCredentials
+	if err := json.NewDecoder(r.Body).Decode(&credentials); err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+	if err := validator.Validate.Struct(credentials); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	userId, ok := claims.UserId(r)
+	if !ok {
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+		return
+	}
+
+	email, err := h.ConfirmUseCase.ConfirmEmailChange(r.Context(), userId, credentials.Code)
+	if err != nil {
+		writeEmailChangeError(w, err)
+		return
+	}
+	body, err := json.Marshal(map[string]string{"email": email})
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return
+	}
+	_, _ = w.Write(body)
+}
+
+func writePendingEmail(w http.ResponseWriter, pending string) {
+	body, err := json.Marshal(map[string]string{"pending_email": pending})
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return
+	}
+	_, _ = w.Write(body)
+}
+
+func writeEmailChangeError(w http.ResponseWriter, err error) {
+	switch {
+	case errors.Is(err, user.ErrUserNotFound):
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+	case errors.Is(err, user.ErrWrongPassword):
+		http.Error(w, apperr.WrongPasswordErrorCode, http.StatusForbidden)
+	case errors.Is(err, user.ErrSameEmail):
+		http.Error(w, apperr.SameEmailErrorCode, http.StatusBadRequest)
+	case errors.Is(err, user.ErrNoPendingEmailChange):
+		http.Error(w, apperr.NoPendingEmailChangeErrorCode, http.StatusNotFound)
+	case errors.Is(err, user.ErrInvalidEmailChangeCode):
+		http.Error(w, apperr.InvalidEmailChangeCodeErrorCode, http.StatusForbidden)
+	case errors.Is(err, user.ErrEmailUnavailable):
+		http.Error(w, apperr.EmailUnavailableErrorCode, http.StatusConflict)
+	default:
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+	}
+}