feat: Improve error handling

Mail/Views/Bottom sheets/RestoreEmailsView.swift

@@ -76,7 +76,7 @@ struct RestoreEmailsView: View {
         Task {
             await tryOrDisplayError {
                 try await mailboxManager.apiFetcher.restoreBackup(mailbox: mailboxManager.mailbox, date: selectedDate)
-                await IKSnackBar.showSnackBar(message: MailResourcesStrings.Localizable.snackbarSuccessfulRestoration)
+                IKSnackBar.showSnackBar(message: MailResourcesStrings.Localizable.snackbarRestorationLaunched)
             }
         }
     }

Mail/Views/Onboarding/OnboardingView.swift

@@ -18,8 +18,8 @@
 
 import AuthenticationServices
 import InfomaniakCoreUI
-import InfomaniakDI
 import InfomaniakCreateAccount
+import InfomaniakDI
 import InfomaniakLogin
 import Lottie
 import MailCore
@@ -71,7 +71,7 @@ struct Slide: Identifiable {
 class LoginHandler: InfomaniakLoginDelegate, ObservableObject {
     @LazyInjectService var loginService: InfomaniakLoginable
     @LazyInjectService var matomo: MatomoUtils
-    
+
     @Published var isLoading = false
     @Published var isPresentingErrorAlert = false
     var sceneDelegate: SceneDelegate?
@@ -129,7 +129,7 @@ class LoginHandler: InfomaniakLoginDelegate, ObservableObject {
                 _ = try await AccountManager.instance.createAndSetCurrentAccount(code: code, codeVerifier: verifier)
                 sceneDelegate?.showMainView()
                 UIApplication.shared.registerForRemoteNotifications()
-            } catch MailError.noMailbox {
+            } catch let error as MailError where error == MailError.noMailbox {
                 sceneDelegate?.showNoMailboxView()
             } catch {
                 if let previousAccount = previousAccount {

Mail/Views/SplitView.swift

@@ -108,7 +108,7 @@ struct SplitView: View {
             if let tappedNotificationThread = tappedNotificationMessage?.originalThread {
                 navigationStore.threadPath = [tappedNotificationThread]
             } else {
-                IKSnackBar.showSnackBar(message: MailError.messageNotFound.errorDescription ?? "")
+                IKSnackBar.showSnackBar(message: MailError.messageNotFound.errorDescription)
             }
         }
         .onAppear {

MailCore/API/MailApiError.swift

@@ -0,0 +1,117 @@
+/*
+ Infomaniak Mail - iOS App
+ Copyright (C) 2022 Infomaniak Network SA
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import Foundation
+import MailResources
+
+class MailApiError: MailError {
+    static let allErrors: [MailApiError] = [
+        // General
+        MailApiError(code: "not_authorized"),
+
+        // Folder
+        MailApiError(code: "folder__unable_to_create"),
+        MailApiError(code: "folder__unable_to_update"),
+        MailApiError(code: "folder__unable_to_delete"),
+        MailApiError(code: "folder__unable_to_flush"),
+        MailApiError(code: "folder__protected_folder"),
+        MailApiError(code: "folder__unable_to_move_folder_in_its_sub_folders"),
+        MailApiError(code: "folder__destination_folder_already_exists"),
+        MailApiError(code: "folder__root_destination_not_exists"),
+        MailApiError(
+            code: "folder__destination_already_exists",
+            localizedDescription: MailResourcesStrings.Localizable.errorNewFolderAlreadyExists,
+            shouldDisplay: true
+        ),
+        MailApiError(code: "folder__not_exists",
+                     localizedDescription: MailResourcesStrings.Localizable.errorFolderNotFound,
+                     shouldDisplay: true),
+
+        // Mail
+        MailApiError(code: "mail__move_destination_folder_not_found"),
+        MailApiError(code: "mail__cannot_connect_to_server"),
+        MailApiError(code: "mail__imap_authentication_failed"),
+        MailApiError(code: "mail__imap_unable_to_parse_response"),
+        MailApiError(code: "mail__imap_connection_timedout"),
+        MailApiError(code: "mail__cannot_connect_to_smtp_server"),
+        MailApiError(code: "mail__smtp_authentication_failed"),
+        MailApiError(code: "mail__message_not_found"),
+        MailApiError(code: "mail__message_attachment_not_found"),
+        MailApiError(code: "mail__unable_to_undo_move_action"),
+        MailApiError(code: "mail__unable_to_move_emails"),
+
+        // Draft
+        MailApiError(code: "draft__attachment_not_found"),
+        MailApiError(code: "draft__not_found"),
+        MailApiError(code: "draft__message_not_found"),
+        MailApiError(
+            code: "draft__to_many_recipients",
+            localizedDescription: MailResourcesStrings.Localizable.tooManyRecipients,
+            shouldDisplay: true
+        ),
+        MailApiError(code: "draft__max_attachments_size_reached"),
+        MailApiError(
+            code: "draft__need_at_least_one_recipient_to_be_sent",
+            localizedDescription: MailResourcesStrings.Localizable.errorAtLeastOneRecipient,
+            shouldDisplay: true
+        ),
+        MailApiError(
+            code: "draft__cannot_modify_scheduled_or_already_sent_message",
+            localizedDescription: MailResourcesStrings.Localizable.errorEditScheduledMessage,
+            shouldDisplay: true
+        ),
+        MailApiError(code: "draft__cannot_cancel_non_scheduled_message"),
+        MailApiError(code: "draft__cannot_forward_more_than_one_message_inline"),
+        MailApiError(code: "draft__cannot_move_scheduled_message"),
+
+        // Send
+        MailApiError(code: "send__server_refused_from"),
+        MailApiError(code: "send__server_refused_all_recipients",
+                     localizedDescription: MailResourcesStrings.Localizable.errorRefusedRecipients,
+                     shouldDisplay: true),
+        MailApiError(code: "send__server_rate_limit_exceeded",
+                     localizedDescription: MailResourcesStrings.Localizable.errorSendLimitExceeded,
+                     shouldDisplay: true),
+        MailApiError(code: "send__server_unknown_error"),
+        MailApiError(code: "send__server_daily_limit_reached"),
+        MailApiError(code: "send__spam_rejected"),
+        MailApiError(code: "send__sender_mismatch"),
+
+        // Attachment
+        MailApiError(code: "attachment__not_valid"),
+        MailApiError(code: "attachment__not_found"),
+        MailApiError(code: "attachment__cannot_render"),
+        MailApiError(code: "attachment__error_while_render"),
+        MailApiError(code: "attachment__missing_filename_or_mimetype"),
+        MailApiError(code: "attachment__incorrect_disposition"),
+        MailApiError(code: "attachment__content_id_not_valid"),
+        MailApiError(code: "attachment__add_attachment_from_drive_fail"),
+        MailApiError(code: "attachment__store_to_drive_fail"),
+
+        // Message
+        MailApiError(code: "message__uid_is_not_valid")
+    ]
+
+    static func mailApiErrorFromCode(_ code: String) -> MailApiError? {
+        return allErrors.first { $0.code == code }
+    }
+
+    static func mailApiErrorWithFallback(apiErrorCode: String) -> MailError {
+        return mailApiErrorFromCode(apiErrorCode) ?? MailError.unknownError
+    }
+}

MailCore/API/MailApiFetcher.swift

@@ -43,9 +43,9 @@ public class MailApiFetcher: ApiFetcher {
         do {
             return try await super.perform(request: request)
         } catch InfomaniakError.apiError(let apiError) {
-            throw MailError.apiError(apiError)
+            throw MailApiError.mailApiErrorWithFallback(apiErrorCode: apiError.code)
         } catch InfomaniakError.serverError(statusCode: let statusCode) {
-            throw MailError.serverError(statusCode: statusCode)
+            throw MailServerError(httpStatus: statusCode)
         } catch {
             if let afError = error.asAFError {
                 if case .responseSerializationFailed(let reason) = afError,