Enable room invites when matrix handle is known

Signed-off-by: Damien Zammit <damien@zamaudio.com>

5 files changed, 78 insertions, 2 deletions

diff --git a/AUTHORS.rst b/AUTHORS.rst
index eb5b4e4..2d2470d 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -7,3 +7,6 @@ Eion Robb <eion at robbmob.com>
 
 Dr. David Alan Gilbert <dave at treblig.org>
  * Sending images, emote handling
+
+Damien Zammit <damien at zamaudio.com>
+ * Invite users
diff --git a/README.md b/README.md
index d414dda..205eaab 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,6 @@ implemented. Sending and receiving simple text messages is supported, as is
 joining rooms you are invited to by other users.
 
 The following are not yet supported:
- * Sending invitations
  * Creating new rooms (and one-to-one chats)
  * Joining existing rooms by alias instead of room_id
  * Presence indication
diff --git a/libmatrix.c b/libmatrix.c
index 37e7450..5b3118c 100644
--- a/libmatrix.c
+++ b/libmatrix.c
@@ -36,6 +36,7 @@
 
 #include "matrix-connection.h"
 #include "matrix-room.h"
+#include "matrix-api.h"
 
 /**
  * Called to get the icon name for the given buddy and account.
@@ -178,7 +179,15 @@ static void matrixprpl_reject_chat(PurpleConnection *gc, GHashTable *components)
     matrix_connection_reject_invite(gc, room_id);
 }
 
+static void matrixprpl_chat_invite(PurpleConnection *gc, int id,
+        const char *message, const char *who)
+{
+    PurpleConversation *conv = purple_find_chat(gc, id);
+    MatrixConnectionData *conn;
+    conn = (MatrixConnectionData *)(conv->account->gc->proto_data);
 
+    matrix_api_invite_user(conn, conv->name, who, NULL, NULL, NULL, NULL);
+}
 
 /**
  * handle leaving a chat: notify the server that we are leaving, and
@@ -279,7 +288,7 @@ static PurplePluginProtocolInfo prpl_info =
     matrixprpl_join_chat,                  /* join_chat */
     matrixprpl_reject_chat,                /* reject_chat */
     matrixprpl_get_chat_name,              /* get_chat_name */
-    NULL,                                  /* chat_invite */
+    matrixprpl_chat_invite,                /* chat_invite */
     matrixprpl_chat_leave,                 /* chat_leave */
     NULL,                                  /* chat_whisper */
     matrixprpl_chat_send,                  /* chat_send */
diff --git a/matrix-api.c b/matrix-api.c
index a8528ce..bf35605 100644
--- a/matrix-api.c
+++ b/matrix-api.c
@@ -717,6 +717,47 @@ MatrixApiRequestData *matrix_api_send(MatrixConnectionData *conn,
     return fetch_data;
 }
 
+void matrix_api_invite_user(MatrixConnectionData *conn,
+        const gchar *room_id,
+        const gchar *who,
+        MatrixApiCallback callback,
+        MatrixApiErrorCallback error_callback,
+        MatrixApiBadResponseCallback bad_response_callback,
+        gpointer user_data)
+{
+    GString *url;
+    JsonNode *body_node;
+    JsonGenerator *generator;
+    gchar *json;
+
+    JsonObject *invitee;
+    invitee = json_object_new();
+    json_object_set_string_member(invitee, "user_id", who);
+
+    url = g_string_new(conn->homeserver);
+    g_string_append(url, "_matrix/client/r0/rooms/");
+    g_string_append(url, purple_url_encode(room_id));
+    g_string_append(url, "/invite?access_token=");
+    g_string_append(url, purple_url_encode(conn->access_token));
+
+    body_node = json_node_new(JSON_NODE_OBJECT);
+    json_node_set_object(body_node, invitee);
+
+    generator = json_generator_new();
+    json_generator_set_root(generator, body_node);
+    json = json_generator_to_data(generator, NULL);
+    g_object_unref(G_OBJECT(generator));
+    json_node_free(body_node);
+
+    purple_debug_info("matrixprpl", "sending an invite on %s\n", room_id);
+
+    matrix_api_start(url->str, "POST", json, conn, callback,
+            error_callback, bad_response_callback,
+            user_data, 0);
+    g_free(json);
+    g_string_free(url, TRUE);
+    json_object_unref(invitee);
+}
 
 MatrixApiRequestData *matrix_api_join_room(MatrixConnectionData *conn,
         const gchar *room,
diff --git a/matrix-api.h b/matrix-api.h
index 4245cd7..3359e0e 100644
--- a/matrix-api.h
+++ b/matrix-api.h
@@ -189,6 +189,30 @@ MatrixApiRequestData *matrix_api_send(MatrixConnectionData *conn,
         MatrixApiBadResponseCallback bad_response_callback,
         gpointer user_data);
 
+/**
+ * Invite a user to a room
+ *
+ * @param conn             The connection with which to make the request
+ * @param room_id          The room id to invite the user to
+ *
+ * @param who              The mxid of the person to invite
+ *
+ * @param callback         Function to be called when the request completes
+ * @param error_callback   Function to be called if there is an error making
+ *                             the request. If NULL, matrix_api_error will be
+ *                             used.
+ * @param bad_response_callback Function to be called if the API gives a non-200
+ *                            response. If NULL, matrix_api_bad_response will be
+ *                            used.
+ * @param user_data        Opaque data to be passed to the callbacks
+ */
+void matrix_api_invite_user(MatrixConnectionData *conn,
+        const gchar *room_id,
+        const gchar *who,
+        MatrixApiCallback callback,
+        MatrixApiErrorCallback error_callback,
+        MatrixApiBadResponseCallback bad_response_callback,
+        gpointer user_data);
 
 /**
  * Make a request to join a room