ui: Migrate [AddContactPage] to Bloc

lib/ui/bloc/addcontact_bloc.dart

@@ -0,0 +1,66 @@
+import "package:moxxyv2/shared/commands.dart";
+import "package:moxxyv2/shared/events.dart";
+import "package:moxxyv2/shared/helpers.dart";
+import "package:moxxyv2/shared/backgroundsender.dart";
+import "package:moxxyv2/ui/bloc/conversations_bloc.dart";
+import "package:moxxyv2/ui/bloc/conversation_bloc.dart";
+
+import "package:get_it/get_it.dart";
+import "package:bloc/bloc.dart";
+import "package:freezed_annotation/freezed_annotation.dart";
+
+part "addcontact_state.dart";
+part "addcontact_event.dart";
+part "addcontact_bloc.freezed.dart";
+
+class AddContactBloc extends Bloc<AddContactEvent, AddContactState> {
+  AddContactBloc() : super(AddContactState()) {
+    on<AddedContactEvent>(_onContactAdded);
+    on<JidChangedEvent>(_onJidChanged);
+  }
+
+  Future<void> _onContactAdded(AddedContactEvent event, Emitter<AddContactState> emit) async {
+    // TODO: Remove once we can disable the custom buttom
+    if (state.working) return;
+
+    final validation = validateJidString(state.jid);
+    if (validation != null) {
+      emit(state.copyWith(jidError: validation));
+      return;
+    }
+
+    emit(
+      state.copyWith(
+        working: true,
+        jidError: null
+      )
+    );
+
+    final result = await GetIt.I.get<BackgroundServiceDataSender>().sendData(
+      AddContactCommand(
+        jid: state.jid
+      )
+    ) as AddContactResultEvent;
+
+    if (result.conversation != null) {
+      if (result.added) {
+        GetIt.I.get<ConversationsBloc>().add(ConversationsAddedEvent(result.conversation!));
+      } else {
+        GetIt.I.get<ConversationsBloc>().add(ConversationsUpdatedEvent(result.conversation!));
+      }
+    }
+
+    GetIt.I.get<ConversationBloc>().add(
+      RequestedConversationEvent(
+        result.conversation!.jid,
+        result.conversation!.title,
+        result.conversation!.avatarUrl,
+        removeUntilConversations: true
+      )
+    );
+  }
+
+  Future<void> _onJidChanged(JidChangedEvent event, Emitter<AddContactState> emit) async {
+    emit(state.copyWith(jid: event.jid));
+  }
+}

lib/ui/bloc/addcontact_event.dart

@@ -0,0 +1,13 @@
+part of "addcontact_bloc.dart";
+
+abstract class AddContactEvent {}
+
+/// Triggered when a new contact has been added by the UI
+class AddedContactEvent extends AddContactEvent {}
+
+/// Triggered by the UI when the JID input field is changed
+class JidChangedEvent extends AddContactEvent {
+  final String jid;
+
+  JidChangedEvent(this.jid);
+}

lib/ui/bloc/addcontact_state.dart

@@ -0,0 +1,10 @@
+part of "addcontact_bloc.dart";
+
+@freezed
+class AddContactState with _$AddContactState {
+  factory AddContactState({
+      @Default("") String jid,
+      @Default(null) String? jidError,
+      @Default(false) bool working
+  }) = _AddContactState;
+}

lib/ui/bloc/conversation_bloc.dart

@@ -11,6 +11,7 @@ import "package:moxxyv2/ui/bloc/conversations_bloc.dart";
 import "package:get_it/get_it.dart";
 import "package:bloc/bloc.dart";
 import "package:freezed_annotation/freezed_annotation.dart";
+import "package:flutter/widgets.dart";
 
 part "conversation_state.dart";
 part "conversation_event.dart";
@@ -47,11 +48,18 @@ class ConversationBloc extends Bloc<ConversationEvent, ConversationState> {
       )
     );
 
-    GetIt.I.get<NavigationBloc>().add(
+    final navEvent = event.removeUntilConversations ? (
+      PushedNamedAndRemoveUntilEvent(
+        const NavigationDestination(conversationRoute),
+        ModalRoute.withName(conversationsRoute)
+      )
+    ) : (
       PushedNamedEvent(
         const NavigationDestination(conversationRoute)
       )
     );
+    
+    GetIt.I.get<NavigationBloc>().add(navEvent);
 
     final result = await GetIt.I.get<BackgroundServiceDataSender>().sendData(
       GetMessagesForJidCommand(

lib/ui/bloc/conversation_event.dart

@@ -28,8 +28,16 @@ class RequestedConversationEvent extends ConversationEvent {
   final String jid;
   final String title;
   final String avatarUrl;
+  final bool removeUntilConversations;
 
-  RequestedConversationEvent(this.jid, this.title, this.avatarUrl);
+  RequestedConversationEvent(
+    this.jid,
+    this.title,
+    this.avatarUrl,
+    {
+      this.removeUntilConversations = false
+    }
+  );
 }
 
 /// Triggered by the UI when a message is quoted

lib/ui/bloc/conversations_bloc.dart

@@ -1,5 +1,3 @@
-import "package:moxxyv2/shared/events.dart";
-import "package:moxxyv2/shared/backgroundsender.dart";
 import "package:moxxyv2/shared/models/conversation.dart";
 
 import "package:bloc/bloc.dart";

lib/ui/bloc/login_bloc.dart

@@ -14,20 +14,6 @@ part "login_state.dart";
 part "login_event.dart";
 part "login_bloc.freezed.dart";
 
-/// Returns an error string if [jid] is not a valid JID. Returns null if everything
-/// appears okay.
-String? _validateJid(String jid) {
-  switch (validateJid(jid)) {
-    case JidFormatError.empty: return "XMPP-Address cannot be empty";
-    case JidFormatError.noSeparator:
-    case JidFormatError.tooManySeparators: return "XMPP-Address must contain exactly one @";
-    // TODO: Find a better text
-    case JidFormatError.noDomain: return "A domain must follow the @";
-    case JidFormatError.noLocalpart: return "Your username must preceed the @";
-    case JidFormatError.none: return null;
-  }
-}
-
 class LoginBloc extends Bloc<LoginEvent, LoginState> {
   LoginBloc() : super(LoginState()) {
     on<LoginJidChangedEvent>(_onJidChanged);
@@ -49,7 +35,7 @@ class LoginBloc extends Bloc<LoginEvent, LoginState> {
   }
   
   Future<void> _onSubmitted(LoginSubmittedEvent event, Emitter<LoginState> emit) async {
-    final jidValidity = _validateJid(state.jid);
+    final jidValidity = validateJidString(state.jid);
     if (jidValidity != null) {
       return emit(
         state.copyWith(

lib/ui/bloc/newconversation_bloc.dart

@@ -4,14 +4,12 @@ import "package:moxxyv2/shared/helpers.dart";
 import "package:moxxyv2/shared/models/roster.dart";
 import "package:moxxyv2/shared/models/conversation.dart";
 import "package:moxxyv2/shared/backgroundsender.dart";
-import "package:moxxyv2/ui/constants.dart";
 import "package:moxxyv2/ui/bloc/conversations_bloc.dart";
-import "package:moxxyv2/ui/bloc/navigation_bloc.dart";
+import "package:moxxyv2/ui/bloc/conversation_bloc.dart";
 
 import "package:bloc/bloc.dart";
 import "package:freezed_annotation/freezed_annotation.dart";
 import "package:get_it/get_it.dart";
-import "package:flutter/widgets.dart";
 
 part "newconversation_state.dart";
 part "newconversation_event.dart";
@@ -38,14 +36,12 @@ class NewConversationBloc extends Bloc<NewConversationEvent, NewConversationStat
 
     // Guard against an unneccessary roundtrip
     if (listContains(conversations.state.conversations, (Conversation c) => c.jid == event.jid)) {
-      // TODO: Use the [ConversationBloc]
-      GetIt.I.get<NavigationBloc>().add(
-        PushedNamedAndRemoveUntilEvent(
-          NavigationDestination(
-            conversationRoute,
-            //arguments: ConversationPageArguments(event.jid)
-          ),
-          ModalRoute.withName(conversationsRoute)
+      GetIt.I.get<ConversationBloc>().add(
+        RequestedConversationEvent(
+          event.jid,
+          event.title,
+          event.avatarUrl,
+          removeUntilConversations: true
         )
       );
       return;
@@ -68,20 +64,17 @@ class NewConversationBloc extends Bloc<NewConversationEvent, NewConversationStat
       conversations.add(ConversationsAddedEvent(result.conversation));
     }
 
-    // TODO: Use the [ConversationBloc]
-    GetIt.I.get<NavigationBloc>().add(
-      PushedNamedAndRemoveUntilEvent(
-        NavigationDestination(
-          conversationRoute,
-          //arguments: ConversationPageArguments(event.jid)
-        ),
-        ModalRoute.withName(conversationsRoute)
+    GetIt.I.get<ConversationBloc>().add(
+      RequestedConversationEvent(
+        event.jid,
+        event.title,
+        event.avatarUrl,
+        removeUntilConversations: true
       )
     );
   }
 
   Future<void> _onRosterItemRemoved(NewConversationRosterItemRemovedEvent event, Emitter<NewConversationState> emit) async {
-    // TODO
     return emit(
       state.copyWith(
         roster: state.roster.where(