TF-3219 display limits of email recovery in a yellow banner and filter out invalid suggestions

lib/features/email_recovery/presentation/model/email_recovery_field.dart

@@ -28,7 +28,7 @@ enum EmailRecoveryField {
   String getHintText(BuildContext context) {
     switch (this) {
       case EmailRecoveryField.deletionDate:
-        return AppLocalizations.of(context).last1Year;
+        return AppLocalizations.of(context).last7Days;
       case EmailRecoveryField.receptionDate:
         return AppLocalizations.of(context).allTime;
       case EmailRecoveryField.subject:
@@ -40,16 +40,20 @@ enum EmailRecoveryField {
     }
   }
 
-  List<EmailRecoveryTimeType> getSupportedTimeTypes() {
+  List<EmailRecoveryTimeType> getSupportedTimeTypes(DateTime restorationHorizon) {
     switch (this) {
       case EmailRecoveryField.deletionDate:
-        return [
-          EmailRecoveryTimeType.last1Year,
+        final supportedTypes = [
           EmailRecoveryTimeType.last7Days,
+          EmailRecoveryTimeType.last15Days,
           EmailRecoveryTimeType.last30Days,
           EmailRecoveryTimeType.last6Months,
-          EmailRecoveryTimeType.customRange,
-        ];
+          EmailRecoveryTimeType.last1Year,
+        ].where((type) => restorationHorizon
+                                .subtract(const Duration(seconds: 2)) // to allow "15 days" if restorationHorizon is exactly 15
+                                .isBefore(type.toOldestUTCDate()!.value)).toList();
+
+        return [...supportedTypes, EmailRecoveryTimeType.customRange];
       case EmailRecoveryField.receptionDate:
         return [
           EmailRecoveryTimeType.allTime,

lib/features/email_recovery/presentation/model/email_recovery_time_type.dart

@@ -6,6 +6,7 @@ import 'package:jmap_dart_client/jmap/core/utc_date.dart';
 enum EmailRecoveryTimeType {
   allTime,
   last7Days,
+  last15Days,
   last30Days,
   last6Months,
   last1Year,
@@ -18,6 +19,8 @@ enum EmailRecoveryTimeType {
         return AppLocalizations.of(context).allTime;
       case EmailRecoveryTimeType.last7Days:
         return AppLocalizations.of(context).last7Days;
+      case EmailRecoveryTimeType.last15Days:
+        return AppLocalizations.of(context).last15Days;
       case EmailRecoveryTimeType.last30Days:
         return AppLocalizations.of(context).last30Days;
       case EmailRecoveryTimeType.last6Months:
@@ -47,6 +50,10 @@ enum EmailRecoveryTimeType {
         final today = DateTime.now();
         final last7Days = today.subtract(const Duration(days: 7));
         return last7Days.toUTCDate();
+      case EmailRecoveryTimeType.last15Days:
+        final today = DateTime.now();
+        final last15Days = today.subtract(const Duration(days: 15));
+        return last15Days.toUTCDate();
       case EmailRecoveryTimeType.last30Days:
         final today = DateTime.now();
         final last30Days = today.subtract(const Duration(days: 30));
@@ -68,6 +75,7 @@ enum EmailRecoveryTimeType {
   UTCDate? toLatestUTCDate() {
     switch(this) {
       case EmailRecoveryTimeType.last7Days:
+      case EmailRecoveryTimeType.last15Days:
       case EmailRecoveryTimeType.last30Days:
       case EmailRecoveryTimeType.last6Months:
       case EmailRecoveryTimeType.last1Year:

lib/features/email_recovery/presentation/model/session_extension.dart

@@ -0,0 +1,42 @@
+
+import 'package:duration/duration.dart';
+import 'package:email_recovery/email_recovery/capability_deleted_messages_vault.dart';
+import 'package:jmap_dart_client/jmap/core/session/session.dart';
+import 'package:model/extensions/session_extension.dart';
+
+extension SessionExtension on Session {
+
+  String getRestorationHorizonAsString() {
+    String restorationHorizon = 'restorationHorizon';
+    String defaultHorizon = "15 days";
+
+    return (getCapabilityProperties(accountId, capabilityDeletedMessagesVault)
+        ?.props[0] as Map<String, dynamic>?)
+        ?[restorationHorizon]
+        ?? defaultHorizon;
+  }
+
+  Duration getRestorationHorizonAsDuration() {
+    try {
+      String horizonWithCorrectFormat = getRestorationHorizonAsString()
+          .replaceAll(" days", "d")
+          .replaceAll(" day", "d")
+          .replaceAll(" hours", "h")
+          .replaceAll(" hour", "h")
+          .replaceAll(" minutes", "m")
+          .replaceAll(" minute", "m")
+          .replaceAll(" seconds", "s")
+          .replaceAll(" second", "s")
+          .replaceAll(" milliseconds", "ms")
+          .replaceAll(" millisecond", "ms");
+
+      return parseDuration(horizonWithCorrectFormat, separator: ' ');
+    } catch (e) {
+      return const Duration(days: 15);
+    }
+  }
+
+  DateTime getRestorationHorizonAsDateTime() {
+    return DateTime.now().subtract(getRestorationHorizonAsDuration());
+  }
+}