From e39d90442dfd6fb136cda23b0d013da98fb089e9 Mon Sep 17 00:00:00 2001
From: ilotterytea <iltsu@alright.party>
Date: Sat, 5 Jul 2025 18:12:43 +0500
Subject: feat: parse irc messages fully

---
 bot/src/irc/message.cpp  | 78 ++++++++++++++++++++++++++++++++++++------------
 bot/src/irc/message.hpp  |  8 +++++
 bot/src/utils/string.cpp | 14 +++++++++
 bot/src/utils/string.hpp |  4 +++
 4 files changed, 85 insertions(+), 19 deletions(-)

(limited to 'bot')

diff --git a/bot/src/irc/message.cpp b/bot/src/irc/message.cpp
index 038df83..43590e5 100644
--- a/bot/src/irc/message.cpp
+++ b/bot/src/irc/message.cpp
@@ -4,29 +4,69 @@
 #include <string>
 #include <vector>
 
-namespace bot {
-  namespace irc {
-    std::optional<MessageType> define_message_type(const std::string &msg) {
-      std::vector<std::string> parts = utils::string::split_text(msg, ' ');
-      int i;
-
-      if (msg[0] == '@') {
-        i = 2;
-      } else if (msg[0] == ':') {
-        i = 1;
-      } else {
-        return std::nullopt;
+namespace bot::irc {
+  std::optional<MessageType> define_message_type(const std::string &msg) {
+    std::vector<std::string> parts = utils::string::split_text(msg, ' ');
+    int i;
+
+    if (msg[0] == '@') {
+      i = 2;
+    } else if (msg[0] == ':') {
+      i = 1;
+    } else {
+      return std::nullopt;
+    }
+
+    if (parts[i] == "NOTICE") {
+      return MessageType::Notice;
+    } else if (parts[i] == "PRIVMSG") {
+      return MessageType::Privmsg;
+    } else if (parts[i] == "PING") {
+      return MessageType::Ping;
+    }
+
+    return std::nullopt;
+  }
+
+  std::optional<IRCMessage> IRCMessage::from_string(std::string msg) {
+    IRCMessage m;
+
+    if (msg[0] == '@') {
+      int end = msg.find(' ');
+      std::string raw_tags = msg.substr(1, end);
+      for (const std::string tag : utils::string::split_text(raw_tags, ';')) {
+        auto splitted_tag = utils::string::split_text_n(tag, "=", 1);
+        m.tags.insert_or_assign(splitted_tag[0], splitted_tag[1]);
       }
+      msg = msg.substr(end + 1);
+    }
 
-      if (parts[i] == "NOTICE") {
-        return MessageType::Notice;
-      } else if (parts[i] == "PRIVMSG") {
-        return MessageType::Privmsg;
-      } else if (parts[i] == "PING") {
-        return MessageType::Ping;
+    if (msg[0] == ':') {
+      int end = msg.find(' ');
+      m.prefix = msg.substr(1, end);
+      int bang = msg.find('!');
+      if (bang != std::string::npos) {
+        m.nick = m.prefix.substr(0, bang - 1);
       }
+      msg = msg.substr(end + 1);
+    }
 
-      return std::nullopt;
+    std::vector<std::string> parts = utils::string::split_text(msg, ' ');
+
+    m.command = parts.front();
+    parts.erase(parts.begin());
+
+    for (int i = 0; i < parts.size(); i++) {
+      if (parts[i][0] == ':') {
+        parts = std::vector<std::string>(parts.begin() + i, parts.end());
+        m.params.push_back(utils::string::join_vector(parts, ' ').substr(1));
+        break;
+      }
+      if (!parts[i].empty()) {
+        m.params.push_back(parts[i]);
+      }
     }
+
+    return m;
   }
 }
diff --git a/bot/src/irc/message.hpp b/bot/src/irc/message.hpp
index 54b911b..ae903ba 100644
--- a/bot/src/irc/message.hpp
+++ b/bot/src/irc/message.hpp
@@ -14,6 +14,14 @@ namespace bot {
     enum MessageType { Privmsg, Ping, Notice };
     std::optional<MessageType> define_message_type(const std::string &msg);
 
+    struct IRCMessage {
+        std::map<std::string, std::string> tags;
+        std::string prefix, nick, command;
+        std::vector<std::string> params;
+
+        static std::optional<IRCMessage> from_string(std::string msg);
+    };
+
     struct MessageSender {
         std::string login;
         std::string display_name;
diff --git a/bot/src/utils/string.cpp b/bot/src/utils/string.cpp
index 38087dc..0dd79dd 100644
--- a/bot/src/utils/string.cpp
+++ b/bot/src/utils/string.cpp
@@ -113,6 +113,20 @@ namespace bot {
 
         return lines;
       }
+
+      std::vector<std::string> split_text_n(std::string value,
+                                            const std::string &separator,
+                                            const int &n) {
+        std::vector<std::string> v;
+        int fi, i = 0;
+        while ((fi = value.find(separator)) != std::string::npos && i < n) {
+          v.push_back(value.substr(0, fi));
+          value = value.substr(fi + separator.size());
+          i++;
+        }
+        v.push_back(value);
+        return v;
+      }
     }
   }
 }
diff --git a/bot/src/utils/string.hpp b/bot/src/utils/string.hpp
index 18d4f9a..f46b608 100644
--- a/bot/src/utils/string.hpp
+++ b/bot/src/utils/string.hpp
@@ -35,6 +35,10 @@ namespace bot {
           const std::string &base, const std::vector<std::string> &values,
           const std::string &prefix, const std::string &separator,
           const long long &max_length);
+
+      std::vector<std::string> split_text_n(std::string value,
+                                            const std::string &separator,
+                                            const int &n);
     }
   }
 }
-- 
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