From 13abc13adc4dc4ad0cd53678120f54ba426a3dfc Mon Sep 17 00:00:00 2001
From: Gergely Polonkai <gergely@polonkai.eu>
Date: Mon, 7 Mar 2016 15:22:39 +0100
Subject: [PATCH] Add event handler for m.receipt

---
 .gitignore                    |  1 +
 src/Makefile.am               |  1 +
 src/matrix-event-receipt.vala | 88 +++++++++++++++++++++++++++++++++++
 src/matrix-event-types.c      |  3 ++
 4 files changed, 93 insertions(+)
 create mode 100644 src/matrix-event-receipt.vala

diff --git a/.gitignore b/.gitignore
index 8aaa95a..60073a0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,4 @@ Makefile.in
 /src/matrix-event-room-topic.c
 /src/matrix-event-typing.c
 /src/matrix-event-room-aliases.c
+/src/matrix-event-receipt.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 96f1f24..eec415e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -32,6 +32,7 @@ libmatrix_glib_0_0_la_VALA_SOURCES = \
 	matrix-event-room-topic.vala \
 	matrix-event-typing.vala \
 	matrix-event-room-aliases.vala \
+	matrix-event-receipt.vala \
 	$(NULL)
 
 AM_CPPFLAGS += \
diff --git a/src/matrix-event-receipt.vala b/src/matrix-event-receipt.vala
new file mode 100644
index 0000000..aae3c6a
--- /dev/null
+++ b/src/matrix-event-receipt.vala
@@ -0,0 +1,88 @@
+/*
+ * This file is part of matrix-glib-sdk
+ *
+ * matrix-glib-sdk is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * matrix-glib-sdk is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with matrix-glib-sdk. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Class to hold m.receipt events.
+ *
+ * Informs the client of new receipts.
+ */
+public class Matrix.Event.Receipt : Matrix.Event.Base {
+    public string? room_id { get; set; default = null; }
+
+    private struct ReceiptData {
+        string event_id;
+        string typ;
+        string user;
+    }
+
+    private HashTable<ReceiptData?, ulong?> _receipt_data = null;
+
+    private static bool
+    _rd_equal(ReceiptData k1, ReceiptData k2)
+    {
+        return ((k1.event_id == k2.event_id)
+                && (k1.typ == k2.typ)
+                && (k1.user == k2.user));
+    }
+
+    private void
+    _init_receipt_data()
+    {
+        _receipt_data = new HashTable<ReceiptData?, ulong?>(
+                direct_hash, (EqualFunc)_rd_equal);
+    }
+
+    protected override void
+    from_json(Json.Node json_data)
+        throws Matrix.Error
+    {
+        var root = json_data.get_object();
+        var content_root = root.get_member("content").get_object();
+        Json.Node? node;
+
+        if ((node = root.get_member("room_id")) != null) {
+            _room_id = node.get_string();
+        } else {
+            warning("room_id is missing from a m.presence event");
+        }
+
+        content_root.foreach_member((obj, event_id, event_content) => {
+                if ((node = event_content.get_object()
+                     .get_member("m.read")) != null) {
+                    var read_obj = node.get_object();
+                    read_obj.foreach_member((robj, r_user_id, r_content) => {
+                            if (_receipt_data == null) {
+                                _init_receipt_data();
+                            }
+
+                            ReceiptData rd_key = ReceiptData() {
+                                event_id = event_id,
+                                typ = "m.read",
+                                user = r_user_id
+                            };
+
+                            _receipt_data.replace(
+                                    rd_key,
+                                    (ulong)r_content.get_object().get_member("ts").get_int());
+                        });
+                } else {
+                    warning("content.$event-id.m.read is missing from a m.presence event");
+                }
+            });
+    }
+}
diff --git a/src/matrix-event-types.c b/src/matrix-event-types.c
index 1ba7157..fc90c69 100644
--- a/src/matrix-event-types.c
+++ b/src/matrix-event-types.c
@@ -170,6 +170,9 @@ matrix_event_types_ctor(void)
     matrix_event_register_type("m.room.aliases",
                                MATRIX_EVENT_TYPE_ROOM_ALIASES,
                                NULL);
+    matrix_event_register_type("m.receipt",
+                               MATRIX_EVENT_TYPE_RECEIPT,
+                               NULL);
 }
 
 void