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1 files changed, 146 insertions, 0 deletions

diff --git a/client/src/service/chat_interaction.vala b/client/src/service/chat_interaction.vala
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+using Gee;
+
+using Xmpp;
+using Dino.Entities;
+
+namespace Dino {
+public class ChatInteraction : StreamInteractionModule, Object {
+    private const string id = "chat_interaction";
+
+    public signal void conversation_read(Conversation conversation);
+    public signal void conversation_unread(Conversation conversation);
+
+    private StreamInteractor stream_interactor;
+    private Conversation? selected_conversation;
+
+    private HashMap<Conversation, DateTime> last_input_interaction = new HashMap<Conversation, DateTime>(Conversation.hash_func, Conversation.equals_func);
+    private HashMap<Conversation, DateTime> last_interface_interaction = new HashMap<Conversation, DateTime>(Conversation.hash_func, Conversation.equals_func);
+    private bool focus_in = false;
+
+    public static void start(StreamInteractor stream_interactor) {
+        ChatInteraction m = new ChatInteraction(stream_interactor);
+        stream_interactor.add_module(m);
+    }
+
+    private ChatInteraction(StreamInteractor stream_interactor) {
+        this.stream_interactor = stream_interactor;
+        Timeout.add_seconds(30, update_interactions);
+        MessageManager.get_instance(stream_interactor).message_received.connect(on_message_received);
+        MessageManager.get_instance(stream_interactor).message_sent.connect(on_message_sent);
+    }
+
+    public bool is_active_focus(Conversation? conversation = null) {
+        if (conversation != null) {
+            return focus_in && conversation.equals(this.selected_conversation);
+        } else {
+            return focus_in;
+        }
+    }
+
+    public void window_focus_in(Conversation? conversation) {
+        on_conversation_selected(selected_conversation);
+    }
+
+    public void window_focus_out(Conversation? conversation) {
+        focus_in = false;
+    }
+
+    public void on_message_entered(Conversation conversation) {
+        if (Settings.instance().send_read) {
+            if (!last_input_interaction.has_key(conversation) && conversation.type_ != Conversation.TYPE_GROUPCHAT) {
+                send_chat_state_notification(conversation, Xep.ChatStateNotifications.STATE_COMPOSING);
+            }
+        }
+        last_input_interaction[conversation] = new DateTime.now_utc();
+        last_interface_interaction[conversation] = new DateTime.now_utc();
+    }
+
+    public void on_message_cleared(Conversation conversation) {
+        if (last_input_interaction.has_key(conversation)) {
+            last_input_interaction.unset(conversation);
+            last_interface_interaction.unset(conversation);
+            send_chat_state_notification(conversation, Xep.ChatStateNotifications.STATE_ACTIVE);
+        }
+    }
+
+    public void on_conversation_selected(Conversation? conversation) {
+        selected_conversation = conversation;
+        focus_in = true;
+        if (conversation != null) {
+            conversation_read(selected_conversation);
+            check_send_read();
+            selected_conversation.read_up_to = MessageManager.get_instance(stream_interactor).get_last_message(conversation);
+        }
+    }
+
+    internal string get_id() {
+        return id;
+    }
+
+    public static ChatInteraction? get_instance(StreamInteractor stream_interactor) {
+        return (ChatInteraction) stream_interactor.get_module(id);
+    }
+
+    private void check_send_read() {
+        if (selected_conversation == null || selected_conversation.type_ == Conversation.TYPE_GROUPCHAT) return;
+        Entities.Message? message = MessageManager.get_instance(stream_interactor).get_last_message(selected_conversation);
+        if (message != null && message.direction == Entities.Message.DIRECTION_RECEIVED &&
+                message.stanza != null && !message.equals(selected_conversation.read_up_to)) {
+            selected_conversation.read_up_to = message;
+            send_chat_marker(selected_conversation, message, Xep.ChatMarkers.MARKER_DISPLAYED);
+        }
+    }
+
+    private bool update_interactions() {
+        ArrayList<Conversation> remove_input = new ArrayList<Conversation>(Conversation.equals_func);
+        ArrayList<Conversation> remove_interface = new ArrayList<Conversation>(Conversation.equals_func);
+        foreach (Conversation conversation in last_input_interaction.keys) {
+            if (last_input_interaction.has_key(conversation) &&
+                    (new DateTime.now_utc()).difference(last_input_interaction[conversation]) >= 15 *  TimeSpan.SECOND) {
+                remove_input.add(conversation);
+                send_chat_state_notification(conversation, Xep.ChatStateNotifications.STATE_PAUSED);
+            }
+        }
+        foreach (Conversation conversation in last_interface_interaction.keys) {
+            if (last_interface_interaction.has_key(conversation) &&
+                    (new DateTime.now_utc()).difference(last_interface_interaction[conversation]) >= 1.5 *  TimeSpan.MINUTE) {
+                remove_interface.add(conversation);
+                send_chat_state_notification(conversation, Xep.ChatStateNotifications.STATE_GONE);
+            }
+        }
+        foreach (Conversation conversation in remove_input) last_input_interaction.unset(conversation);
+        foreach (Conversation conversation in remove_interface) last_interface_interaction.unset(conversation);
+        return true;
+    }
+
+    private void on_message_received(Entities.Message message, Conversation conversation) {
+        if (is_active_focus(conversation)) {
+            check_send_read();
+            conversation.read_up_to = message;
+            send_chat_marker(conversation, message, Xep.ChatMarkers.MARKER_DISPLAYED);
+        } else {
+            conversation_unread(conversation);
+        }
+    }
+
+    private void on_message_sent(Entities.Message message, Conversation conversation) {
+        last_input_interaction.unset(conversation);
+        last_interface_interaction.unset(conversation);
+        conversation.read_up_to = message;
+    }
+
+    private void send_chat_marker(Conversation conversation, Entities.Message message, string marker) {
+        Core.XmppStream stream = stream_interactor.get_stream(conversation.account);
+        if (stream != null && Settings.instance().send_read && Xep.ChatMarkers.Module.requests_marking(message.stanza)) {
+            Xep.ChatMarkers.Module.get_module(stream).send_marker(stream, message.stanza.from, message.stanza_id, message.get_type_string(), marker);
+        }
+    }
+
+    private void send_chat_state_notification(Conversation conversation, string state) {
+        Core.XmppStream stream = stream_interactor.get_stream(conversation.account);
+        if (stream != null && Settings.instance().send_read) {
+            Xep.ChatStateNotifications.Module.get_module(stream).send_state(stream, conversation.counterpart.to_string(), state);
+        }
+    }
+}
+}
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