add ability to edit messages

discord/discord.cpp

@@ -172,6 +172,14 @@ void DiscordClient::DeleteMessage(Snowflake channel_id, Snowflake id) {
     m_http.MakeDELETE(path, [](auto) {});
 }
 
+void DiscordClient::EditMessage(Snowflake channel_id, Snowflake id, std::string content) {
+    std::string path = "/channels/" + std::to_string(channel_id) + "/messages/" + std::to_string(id);
+    MessageEditObject obj;
+    obj.Content = content;
+    nlohmann::json j = obj;
+    m_http.MakePATCH(path, j.dump(), [](auto) {});
+}
+
 void DiscordClient::UpdateToken(std::string token) {
     m_token = token;
     m_http.SetAuth(token);

discord/discord.hpp

@@ -70,6 +70,7 @@ public:
 
     void SendChatMessage(std::string content, Snowflake channel);
     void DeleteMessage(Snowflake channel_id, Snowflake id);
+    void EditMessage(Snowflake channel_id, Snowflake id, std::string content);
 
     void UpdateToken(std::string token);
 

discord/objects.cpp

@@ -295,6 +295,18 @@ void to_json(nlohmann::json &j, const CreateMessageObject &m) {
     j["content"] = m.Content;
 }
 
+void to_json(nlohmann::json &j, const MessageEditObject &m) {
+    if (m.Content.size() > 0)
+        j["content"] = m.Content;
+
+    // todo EmbedData to_json
+    // if (m.Embeds.size() > 0)
+    //    j["embeds"] = m.Embeds;
+
+    if (m.Flags != -1)
+        j["flags"] = m.Flags;
+}
+
 Snowflake::Snowflake()
     : m_num(Invalid) {}
 

discord/objects.hpp

@@ -424,3 +424,11 @@ struct CreateMessageObject {
 
     friend void to_json(nlohmann::json &j, const CreateMessageObject &m);
 };
+
+struct MessageEditObject {
+    std::string Content;           // opt, null
+    std::vector<EmbedData> Embeds; // opt, null
+    int Flags = -1;                // opt, null
+
+    friend void to_json(nlohmann::json &j, const MessageEditObject &m);
+};