From 560b4f67812d4504aa87f0c0c0c903b4bea052c0 Mon Sep 17 00:00:00 2001
From: sectapunterx <punterxlethe@proton.me>
Date: Sat, 18 Jan 2025 18:16:49 +0300
Subject: [PATCH] add MUC join/leave and group message support

---
 library/include/larra/group_chat.hpp | 91 ++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 library/include/larra/group_chat.hpp

diff --git a/library/include/larra/group_chat.hpp b/library/include/larra/group_chat.hpp
new file mode 100644
index 0000000..4859c39
--- /dev/null
+++ b/library/include/larra/group_chat.hpp
@@ -0,0 +1,91 @@
+#pragma once
+#include <libxml++/libxml++.h>
+
+#include <format>
+#include <larra/jid.hpp>
+#include <larra/utils.hpp>
+#include <larra/xml_stream.hpp>
+#include <optional>
+#include <string>
+
+namespace larra::xmpp::muc {
+
+struct JoinMuc {
+  BareJid room;
+  std::string nickname;
+  std::optional<std::string> password;
+  struct History {
+    std::optional<int> maxchars;
+    std::optional<int> maxstanzas;
+    std::optional<int> seconds;
+    std::optional<std::string> since;
+  };
+  std::optional<History> history;
+  friend auto operator<<(xmlpp::Element* element, const JoinMuc& self) -> void {
+    element->set_name("presence");
+    std::string occupantJid;
+    if(self.room.server.empty()) {
+      occupantJid = std::format("{}@conference.unknown/{}", self.room.username, self.nickname);
+    } else {
+      occupantJid = std::format("{}@{}/{}", self.room.username, self.room.server, self.nickname);
+    }
+    element->set_attribute("to", occupantJid);
+    auto* xNode = element->add_child_element("x");
+    xNode->set_namespace("http://jabber.org/protocol/muc");
+    if(self.password) {
+      auto* passwordNode = xNode->add_child_element("password");
+      passwordNode->add_child_text(*self.password);
+    }
+    if(self.history) {
+      auto* historyNode = xNode->add_child_element("history");
+      if(self.history->maxchars) {
+        historyNode->set_attribute("maxchars", std::to_string(*self.history->maxchars));
+      }
+      if(self.history->maxstanzas) {
+        historyNode->set_attribute("maxstanzas", std::to_string(*self.history->maxstanzas));
+      }
+      if(self.history->seconds) {
+        historyNode->set_attribute("seconds", std::to_string(*self.history->seconds));
+      }
+      if(self.history->since) {
+        historyNode->set_attribute("since", *self.history->since);
+      }
+    }
+  }
+};
+
+struct LeaveMuc {
+  BareJid room;
+  std::string nickname;
+  friend auto operator<<(xmlpp::Element* element, const LeaveMuc& self) -> void {
+    element->set_name("presence");
+    std::string occupantJid;
+    if(self.room.server.empty()) {
+      occupantJid = std::format("{}@conference.unknown/{}", self.room.username, self.nickname);
+    } else {
+      occupantJid = std::format("{}@{}/{}", self.room.username, self.room.server, self.nickname);
+    }
+    element->set_attribute("to", occupantJid);
+    element->set_attribute("type", "unavailable");
+  }
+};
+
+struct GroupChatMessage {
+  BareJid room;
+  std::string body;
+  friend auto operator<<(xmlpp::Element* element, const GroupChatMessage& self) -> void {
+    element->set_name("message");
+    std::string to;
+    if(self.room.server.empty()) {
+      to = std::format("{}@conference.unknown", self.room.username);
+    } else {
+      to = std::format("{}@{}", self.room.username, self.room.server);
+    }
+    element->set_attribute("to", to);
+    element->set_attribute("type", "groupchat");
+    auto* bodyNode = element->add_child_element("body");
+    bodyNode->add_child_text(self.body);
+  }
+};
+
+}  // namespace larra::xmpp::muc