TF-130 Checking maxSizeAttachmentsPerEmail when uploading attachments

lib/features/composer/presentation/composer_controller.dart

@@ -517,7 +517,38 @@ class ComposerController extends BaseController {
 
   void _pickFileSuccess(Success success) {
     if (success is LocalFilePickerSuccess) {
-      _uploadAttachmentsAction(success.pickedFiles);
+      if (_validateAttachmentsSize(success.pickedFiles)) {
+        _uploadAttachmentsAction(success.pickedFiles);
+      } else {
+        if (currentContext != null) {
+          _appToast.showErrorToast(AppLocalizations.of(currentContext!).the_total_size_of_attachments_in_an_email_exceeds_the_limit);
+        }
+      }
+    }
+  }
+
+  bool _validateAttachmentsSize(List<FileInfo> listFiles) {
+    num currentTotalSize = 0;
+    if (attachments.isNotEmpty) {
+      final currentListSize = attachments
+          .map((attachment) => attachment.size?.value ?? 0)
+          .toList();
+      currentTotalSize = currentListSize.reduce((sum, size) => sum + size);
+      log('ComposerController::checkingAttachmentsLimit(): currentTotalSize: $currentTotalSize');
+    }
+
+    final uploadedListSize = listFiles.map((file) => file.fileSize).toList();
+    final uploadedTotalSize = uploadedListSize.reduce((sum, size) => sum + size);
+    log('ComposerController::checkingAttachmentsLimit(): uploadedTotalSize: $uploadedTotalSize');
+
+    final totalSizeReadyToUpload = currentTotalSize + uploadedTotalSize;
+    log('ComposerController::checkingAttachmentsLimit(): totalSizeReadyToUpload: $totalSizeReadyToUpload');
+
+    final maxSizeAttachmentsPerEmail = mailboxDashBoardController.maxSizeAttachmentsPerEmail?.value;
+    if (maxSizeAttachmentsPerEmail != null) {
+      return totalSizeReadyToUpload <= maxSizeAttachmentsPerEmail;
+    } else {
+      return false;
     }
   }
 

lib/features/mailbox_dashboard/presentation/mailbox_dashboard_controller.dart

@@ -4,7 +4,10 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:jmap_dart_client/jmap/core/capability/capability_identifier.dart';
+import 'package:jmap_dart_client/jmap/core/capability/mail_capability.dart';
 import 'package:jmap_dart_client/jmap/core/session/session.dart';
+import 'package:jmap_dart_client/jmap/core/unsigned_int.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 import 'package:model/model.dart';
@@ -269,6 +272,20 @@ class MailboxDashBoardController extends ReloadableController {
     accountId.value = sessionCurrent?.accounts.keys.first;
   }
 
+  UnsignedInt? get maxSizeAttachmentsPerEmail {
+    if (sessionCurrent != null && accountId.value != null) {
+      final mailCapability = sessionCurrent
+          ?.accounts[accountId.value]
+          ?.accountCapabilities[CapabilityIdentifier.jmapMail];
+      if (mailCapability is MailCapability) {
+        final maxSizeAttachmentsPerEmail = mailCapability.maxSizeAttachmentsPerEmail;
+        log('MailboxDashBoardController::maxSizeAttachmentsPerEmail(): $maxSizeAttachmentsPerEmail');
+        return maxSizeAttachmentsPerEmail;
+      }
+    }
+    return null;
+  }
+
   void composeEmailAction() {
     if (kIsWeb) {
       if (dashBoardAction != DashBoardAction.compose) {

lib/l10n/intl_messages.arb

@@ -1,5 +1,5 @@
 {
-  "@@last_modified": "2022-03-29T11:38:05.063764",
+  "@@last_modified": "2022-03-29T13:00:02.017403",
   "initializing_data": "Initializing data...",
   "@initializing_data": {
     "type": "text",
@@ -893,5 +893,11 @@
     "type": "text",
     "placeholders_order": [],
     "placeholders": {}
+  },
+  "the_total_size_of_attachments_in_an_email_exceeds_the_limit": "The total size of attachments in an email exceeds the limit.",
+  "@the_total_size_of_attachments_in_an_email_exceeds_the_limit": {
+    "type": "text",
+    "placeholders_order": [],
+    "placeholders": {}
   }
 }

lib/main/localizations/app_localizations.dart

@@ -949,4 +949,11 @@ class AppLocalizations {
         'Fix email addresses',
         name: 'fix_email_addresses');
   }
+
+  String get the_total_size_of_attachments_in_an_email_exceeds_the_limit {
+    return Intl.message(
+        'The total size of attachments in an email exceeds the limit.',
+        name: 'the_total_size_of_attachments_in_an_email_exceeds_the_limit'
+    );
+  }
 }