TF-1865: Get content sending email when open item

(cherry picked from commit 3fdec172d72e27020187679d79ffe4f44953678b)

model/lib/email/presentation_email.dart

@@ -7,10 +7,14 @@ import 'package:jmap_dart_client/jmap/core/unsigned_int.dart';
 import 'package:jmap_dart_client/jmap/core/utc_date.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email_address.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email_body_part.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email_body_value.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email_header.dart';
 import 'package:jmap_dart_client/jmap/mail/email/keyword_identifier.dart';
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
+import 'package:model/email/email_content.dart';
 import 'package:model/extensions/email_address_extension.dart';
+import 'package:model/extensions/media_type_extension.dart';
 import 'package:model/mailbox/presentation_mailbox.dart';
 import 'package:model/mailbox/select_mode.dart';
 
@@ -35,6 +39,8 @@ class PresentationEmail with EquatableMixin {
   final Uri? routeWeb;
   final PresentationMailbox? mailboxContain;
   final List<EmailHeader>? emailHeader;
+  final Set<EmailBodyPart>? htmlBody;
+  final Map<PartId, EmailBodyValue>? bodyValues;
 
   PresentationEmail({
     this.id,
@@ -55,7 +61,9 @@ class PresentationEmail with EquatableMixin {
     this.selectMode = SelectMode.INACTIVE,
     this.routeWeb,
     this.mailboxContain,
-    this.emailHeader
+    this.emailHeader,
+    this.htmlBody,
+    this.bodyValues,
   });
 
   String getSenderName() {
@@ -107,6 +115,20 @@ class PresentationEmail with EquatableMixin {
     return DateFormat(sentAt?.value.toPattern(), newLocale).format(sentAt?.value ?? DateTime.now());
   }
 
+  List<EmailContent> get emailContentList {
+    final newHtmlBody = htmlBody
+        ?.where((emailBody) => emailBody.partId != null && emailBody.type != null)
+        .toList() ?? <EmailBodyPart>[];
+
+    final mapHtmlBody = { for (var emailBody in newHtmlBody) emailBody.partId! : emailBody.type! };
+
+    final emailContents = bodyValues?.entries
+        .map((entries) => EmailContent(mapHtmlBody[entries.key].toEmailContentType(), entries.value.value))
+        .toList();
+
+    return emailContents ?? [];
+  }
+
   @override
   List<Object?> get props => [
     id,

model/lib/extensions/email_extension.dart

@@ -145,22 +145,23 @@ extension EmailExtension on Email {
     }
   ) {
     return PresentationEmail(
-        id: emailId ?? id,
-        keywords: keywords,
-        size: size,
-        receivedAt: receivedAt,
-        hasAttachment: hasAttachment,
-        preview: preview,
-        subject: subject,
-        sentAt: createAt ?? sentAt,
-        from: from,
-        to: to,
-        cc: cc,
-        bcc: bcc,
-        replyTo: replyTo,
-        mailboxIds: mailboxIds,
-        selectMode: selectMode,
-        emailHeader: headers?.toList()
+      id: emailId ?? id,
+      keywords: keywords,
+      size: size,
+      receivedAt: receivedAt,
+      hasAttachment: hasAttachment,
+      preview: preview,
+      subject: subject,
+      sentAt: createAt ?? sentAt,
+      from: from,
+      to: to,
+      cc: cc,
+      bcc: bcc,
+      replyTo: replyTo,
+      mailboxIds: mailboxIds,
+      selectMode: selectMode,
+      emailHeader: headers?.toList(),
+      bodyValues: bodyValues
     );
   }
 }