Added command create_group_chat <user> <chat topic>.

Currently it supports only 1 user on creation.
Use chat_add_user to add more users to the chat.

README.md

@@ -117,6 +117,7 @@ If two or more peers have same name, <sharp>number is appended to the name. (for
 * **chat_add_user** \<chat\> \<user\> - add user to chat
 * **chat_del_user** \<chat\> \<user\> - remove user from chat
 * **rename_chat** \<chat\> \<new-name\>
+* **create_group_chat** \<user\> \<chat topic\> - creates a groupchat with user, use chat_add_user to add more users
 
 #### Search
 

interface.c

@@ -322,6 +322,7 @@ char *commands[] = {
   "chat_with_peer",
   "delete_msg",
   "restore_msg",
+  "create_group_chat",
   0 };
 
 int commands_flags[] = {
@@ -371,6 +372,7 @@ int commands_flags[] = {
   07,
   072,
   07,
+  072,
   07
 };
 
@@ -888,6 +890,7 @@ void interpreter (char *line UU) {
       "mark_read <peer> - mark read all received messages with peer\n"
       "add_contact <phone-number> <first-name> <last-name> - tries to add contact to contact-list by phone\n"
       "create_secret_chat <user> - creates secret chat with this user\n"
+      "create_group_chat <user> <chat-topic> - creates group chat with this user, add more users with chat_add_user <user>\n"
       "rename_contact <user> <first-name> <last-name> - tries to rename contact. If you have another device it will be a fight\n"
       "suggested_contacts - print info about contacts, you have max common friends\n"
       "visualize_key <secret_chat> - prints visualization of encryption key. You should compare it to your partner's one\n"
@@ -938,6 +941,15 @@ void interpreter (char *line UU) {
   } else if (IS_WORD ("create_secret_chat")) {
     GET_PEER;    
     do_create_secret_chat (id);
+  } else if (IS_WORD ("create_group_chat")) {
+    GET_PEER;
+    int t;
+    char *s = next_token (&t);
+    if (!s) {
+      printf ("Empty chat topic\n");
+      RET;
+    }    
+    do_create_group_chat (id, s);  
   } else if (IS_WORD ("suggested_contacts")) {
     do_get_suggested ();
   } else if (IS_WORD ("status_online")) {

queries.c

@@ -2784,6 +2784,36 @@ void do_create_secret_chat (peer_id_t id) {
 }
 /* }}} */
 
+/* {{{ Create group chat */
+struct query_methods create_group_chat_methods = {
+  .on_answer = fwd_msg_on_answer
+};
+
+void do_create_group_chat (peer_id_t id, char *chat_topic) {
+  assert (get_peer_type (id) == PEER_USER);
+  peer_t *U = user_chat_get (id);
+  if (!U) { 
+    rprintf ("Can not create chat with unknown user\n");
+    return;
+  }
+  clear_packet ();
+  out_int (CODE_messages_create_chat);
+  out_int (CODE_vector);
+  out_int (1); // Number of users, currently we support only 1 user.
+  if (U && U->user.access_hash) {
+    out_int (CODE_input_user_foreign);
+    out_int (get_peer_id (id));
+    out_long (U->user.access_hash);
+  } else {
+    out_int (CODE_input_user_contact);
+    out_int (get_peer_id (id));
+  }
+  out_string (chat_topic);
+  send_query (DC_working, packet_ptr - packet_buffer, packet_buffer, &create_group_chat_methods, 0);
+}
+/* }}} */
+
+
 /* {{{ Delete msg */
 
 int delete_msg_on_answer (struct query *q UU) {

queries.h

@@ -84,6 +84,7 @@ void do_rename_chat (peer_id_t id, char *name);
 void do_load_encr_video (struct encr_video *V, int next);
 void do_create_encr_chat_request (int user_id);
 void do_create_secret_chat (peer_id_t id);
+void do_create_group_chat (peer_id_t id, char *chat_topic);
 void do_get_suggested (void);
 
 struct photo;