feat(API): user invitations and emails

api/handlers/user/inviteHandler.go

@@ -0,0 +1,136 @@
+package user
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	"RenewCMS/api/pkg/claims"
+	validator "RenewCMS/api/pkg/validator"
+	"RenewCMS/internal/domain/invite"
+	"RenewCMS/internal/domain/user"
+	"RenewCMS/internal/infrastructure/useCases"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"time"
+)
+
+type InviteHandler struct {
+	CreateInviteUseCase        *useCases.CreateInviteUseCase
+	ListUsersAndInvitesUseCase *useCases.ListUsersAndInvitesUseCase
+}
+
+type CreateInviteRequest struct {
+	Email string `json:"email" validate:"required,email"`
+}
+
+type inviteResponse struct {
+	ID        uint32    `json:"id"`
+	Kind      string    `json:"kind"`
+	Email     string    `json:"email"`
+	Status    string    `json:"status"`
+	CreatedAt time.Time `json:"created_at"`
+	ExpiresAt time.Time `json:"expires_at"`
+}
+
+type inviteListItem struct {
+	ID        uint32    `json:"id"`
+	Kind      string    `json:"kind"`
+	Email     string    `json:"email"`
+	Status    string    `json:"status"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+type userListItem struct {
+	ID          uint32    `json:"id"`
+	Kind        string    `json:"kind"`
+	Username    string    `json:"username"`
+	DisplayName string    `json:"display_name"`
+	Status      string    `json:"status"`
+	CreatedAt   time.Time `json:"created_at"`
+}
+
+func NewInviteHandler(createInvite *useCases.CreateInviteUseCase, listUsersAndInvites *useCases.ListUsersAndInvitesUseCase) *InviteHandler {
+	return &InviteHandler{
+		CreateInviteUseCase:        createInvite,
+		ListUsersAndInvitesUseCase: listUsersAndInvites,
+	}
+}
+
+func (h *InviteHandler) CreateInvite(w http.ResponseWriter, r *http.Request) {
+	var request CreateInviteRequest
+	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	if err := validator.Validate.Struct(request); 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
+	}
+
+	created, err := h.CreateInviteUseCase.CreateInvite(useCases.CreateInviteCommand{
+		Email:     request.Email,
+		InvitedBy: userId,
+	})
+	if err != nil {
+		writeCreateInviteError(w, err)
+		return
+	}
+
+	body, err := json.Marshal(inviteResponse{
+		ID:        created.ID,
+		Kind:      useCases.EntryKindInvite,
+		Email:     created.Email,
+		Status:    string(created.StatusAt(time.Now())),
+		CreatedAt: created.CreatedAt,
+		ExpiresAt: created.ExpiresAt,
+	})
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Cache-Control", "no-store")
+	w.WriteHeader(http.StatusCreated)
+	_, _ = w.Write(body)
+}
+
+func writeCreateInviteError(w http.ResponseWriter, err error) {
+	switch {
+	case errors.Is(err, invite.ErrEmailHasAccount):
+		http.Error(w, apperr.EmailHasAccountErrorMessage, http.StatusConflict)
+	case errors.Is(err, invite.ErrPendingInvite):
+		http.Error(w, apperr.PendingInviteErrorMessage, http.StatusConflict)
+	case errors.Is(err, invite.ErrInviteEmailNotSent):
+		http.Error(w, apperr.InviteNotSentErrorMessage, http.StatusInternalServerError)
+	case errors.Is(err, user.ErrUserNotFound):
+		http.Error(w, apperr.UnauthorizedErrorMessage, http.StatusUnauthorized)
+	default:
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+	}
+}
+
+func (h *InviteHandler) ListUsers(w http.ResponseWriter, _ *http.Request) {
+	entries := h.ListUsersAndInvitesUseCase.ListUsersAndInvites()
+
+	items := make([]any, 0, len(entries))
+	for _, entry := range entries {
+		if entry.Kind == useCases.EntryKindInvite {
+			items = append(items, inviteListItem{entry.ID, entry.Kind, entry.Email, entry.Status, entry.CreatedAt})
+			continue
+		}
+		items = append(items, userListItem{entry.ID, entry.Kind, entry.Username, entry.DisplayName, entry.Status, entry.CreatedAt})
+	}
+
+	body, err := json.Marshal(items)
+	if err != nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Cache-Control", "no-store")
+	_, _ = w.Write(body)
+}