Upgrade Beginner and coding command. Added check for suggestion.cpp

src/commands/beginner.cpp

@@ -5,8 +5,50 @@ void cmd::beginnerCommand(dpp::cluster& bot, const dpp::slashcommand_t& event)
 {
     const dpp::embed embed = dpp::embed()
         .set_color(globals::color::defaultColor)
-        .add_field("👋 New to C++? Start here!", "If you're learning C++, we recommend these resources:\n\n📘 **Learn C++ (Best beginner tutorial)**\n- https://www.learncpp.com/\n\n📖 **CPP Reference (Language & Standard library reference)**\n- https://en.cppreference.com/\n\n🛠️ **Practice**\n1. Build small projects\n2. Read and write lots of code\n\n**Common advice:**\n* ✅ Learn modern C++, not C with classes\n* ✅ Avoid outdated books, videos, and random blog posts that teach old C++ practices\n* ❌ Don't ask ChatGPT or other AI to write your code\n\nIf you're stuck on something specific, ask in the help channels: <#1130494190615265342>.\nBe sure to include your code, any error messages, what you've tried already, and what you expected to happen.");
+        .set_title("👋 New to C++? Start here!")
+        .set_url("https://www.learncpp.com/")
+        .set_description("Essential resources for C++ beginners")
+        .add_field("📘 **Best Beginner Tutorial**", 
+            "LearnCpp.com is widely considered the best free resource:\nhttps://www.learncpp.com/", false)
+        .add_field("📖 **CPP Reference**", 
+            "The definitive C++ language reference:\nhttps://en.cppreference.com/", false)
+        .add_field("🛠️ **Practice**", 
+            "Start with small projects:\n"
+            "- Calculator\n"
+            "- Guess game\n"
+            "- Dice game", false)
+        .add_field("✅ **Do this**", 
+            "- Learn Modern C++\n"
+            "- Use a great IDE\n"
+            "- Practice what you learn\n"
+            "- Learn OOP basics\n"
+            "- Write clean, readable code", true)
+        .add_field("❌ **Dont do this**", 
+            "- Don't learn from outdated C++ resources\n"
+            "- Don't let AI write code for you\n"
+            "- Don't use `using namespace std;` (it's bad practice)\n"
+            "- Don't ignore compiler warnings", true)
+        .set_footer(dpp::embed_footer()
+            .set_text("Need help? Ask in <#" + std::to_string(globals::channels::HELP_CHANNEL_ID) + ">"))
+        .set_timestamp(dpp::utility::time_f());
 
-    const dpp::message message(event.command.channel_id, embed);
+    dpp::message message(event.command.channel_id, embed);
+    message.add_component(
+        dpp::component()
+            .add_component(
+                dpp::component()
+                    .set_type(dpp::cot_button)
+                    .set_label("Learn C++")
+                    .set_url("https://www.learncpp.com/")
+                    .set_style(dpp::cos_link)
+            )
+            .add_component(
+                dpp::component()
+                    .set_type(dpp::cot_button)
+                    .set_label("CPP Reference")
+                    .set_url("https://en.cppreference.com/")
+                    .set_style(dpp::cos_link)
+            )
+    );
     event.reply(message);
 }

src/commands/coding_cmd.cpp

@@ -1,15 +1,96 @@
 #include "commands.h"
 #include "../globals/globals.h"
+#include <fstream>
+#include <random>
+#include <algorithm>
+#include <map>
+#include <vector>
+#include <string>
+
+namespace cmd
+    {
+    namespace coding
+        {
+        const std::map<std::string, std::string> difficultyFiles = {
+            {"Beginner", "src/res/coding/beginner.txt"},
+            {"Intermediate", "src/res/coding/intermediate.txt"},
+            {"Advanced", "src/res/coding/advanced.txt"},
+            {"Expert", "src/res/coding/expert.txt"},
+            {"Master", "src/res/coding/master.txt"}
+            };
+
+        std::map<std::string, std::vector<std::string>> questionCache;
+        bool loaded = false;
+
+        void loadQuestions() {
+            if (loaded) return;
+
+            for (const auto& [difficulty, filepath] : difficultyFiles) {
+                std::ifstream file(filepath);
+
+                if (!file.is_open()) {
+                    std::cerr << "Failed to open: " << filepath << std::endl;
+                    continue;
+                    }
+
+                std::vector<std::string> questions;
+                std::string line;
+
+                while (std::getline(file, line)) {
+                    if (!line.empty()) {
+                        questions.push_back(line);
+                        }
+                    }
+                file.close();
+
+                std::random_device rd;
+                std::mt19937 gen(rd());
+                std::shuffle(questions.begin(), questions.end(), gen);
+
+                questionCache[difficulty] = questions;
+                }
+            loaded = true;
+            }
+
+        std::string getRandomQuestion(const std::string& difficulty) {
+            auto it = questionCache.find(difficulty);
+            if (it == questionCache.end() || it->second.empty()) {
+                return "No questions available for " + difficulty + " difficulty.";
+                }
+
+            static std::map<std::string, int> indices;
+            int& index = indices[difficulty];
+            const std::vector<std::string>& questions = it->second;
+
+            std::string question = questions[index % questions.size()];
+            index++;
+
+            return question;
+            }
+        }
+    }
 
 void cmd::codingCommand(dpp::cluster& bot, const dpp::slashcommand_t& event)
-{
-    static int index;
-    const std::string question = cmd::utils::readFileLine("res/coding.txt", index);
+    {
+    coding::loadQuestions();
+    std::string difficulty = "Beginner";
+    try {
+        auto param = event.get_parameter("difficulty");
+        if (!std::holds_alternative<std::monostate>(param)) {
+            difficulty = std::get<std::string>(param);
+            }
+        }
+    catch (...) {}
 
-    const dpp::embed embed = dpp::embed()
+    std::string question = coding::getRandomQuestion(difficulty);
+    dpp::embed embed = dpp::embed()
         .set_color(globals::color::defaultColor)
-        .add_field(question, "");
+        .set_title("Coding Challenge - " + difficulty)
+        .set_description(question)
+        .add_field("Difficulty", difficulty, true)
+        .add_field("Need help?", "Ask in <#" + std::to_string(globals::channels::HELP_CHANNEL_ID) + ">", true)
+        .set_footer(dpp::embed_footer().set_text("Good luck! Share your solution in #code-review"))
+        .set_timestamp(time(0));
 
-    const dpp::message message(event.command.channel_id, embed);
-    event.reply(message);
-}
+    event.reply(embed);
+    }

src/commands/commands.h

@@ -7,10 +7,10 @@
 #include <dpp/dispatcher.h>
 
 namespace cmd
-{
+    {
     /**
-     * @brief Replies with a question in the chat to change the topic
-     * @param bot cluster
+         * @brief Replies with a question in the chat to change the topic
+         * @param bot cluster
      * @param event slash command event
      */
     void topicCommand(dpp::cluster& bot, const dpp::slashcommand_t& event);
@@ -63,7 +63,7 @@ namespace cmd
      * @param event slash command event
      */
     void ruleCommand(dpp::cluster& bot, const dpp::slashcommand_t& event);
-    
+
     /**
      * @brief Replies with a beginner's guide to C++
      * @param bot cluster
@@ -72,27 +72,27 @@ namespace cmd
     void beginnerCommand(dpp::cluster& bot, const dpp::slashcommand_t& event);
 
     namespace utils
-    {
+        {
         /**
          * @brief Read next line of file, jump to beginning if no next line
          * @param path to the file
          * @param index
          * @return content of next line
          */
         std::string readFileLine(const std::string& path, int& index);
+        }
     }
-}
 
 struct cmdStruct
-{
+    {
     std::string name;
     std::string desc;
 
     typedef std::function<void(dpp::cluster&, dpp::slashcommand_t)> cmdFunc;
     cmdFunc function;
 
-    std::list<dpp::command_option> args;
+    std::vector<dpp::command_option> args;
     dpp::permissions permissions;
-};
+    };
 
 #endif // COMMANDS_H

src/globals/globals.h

@@ -11,6 +11,11 @@ namespace globals
         static constexpr int defaultColor = 0x004482;
     }
 
+    namespace channels 
+    {
+        constexpr dpp::snowflake HELP_CHANNEL_ID = 1130466207431135394ULL;
+    }
+
     /**
      * @brief Load configured IDs used by the bot.
      * @param config Parsed config JSON object.

src/main.cpp

@@ -13,25 +13,34 @@ using json = nlohmann::json;
 std::vector<cmdStruct> cmdList = {
     { "topic", "Get a topic question", cmd::topicCommand },
     { "beginner", "Get a beginner's guide to C++", cmd::beginnerCommand },
-    { "coding", "Get a coding question", cmd::codingCommand },
+    { "coding", "Get a coding question", cmd::codingCommand,
+    {
+        dpp::command_option(dpp::co_string, "difficulty", "Select difficulty", false)
+            .add_choice(dpp::command_option_choice("Beginner", "Beginner"))
+            .add_choice(dpp::command_option_choice("Intermediate", "Intermediate"))
+            .add_choice(dpp::command_option_choice("Advanced", "Advanced"))
+            .add_choice(dpp::command_option_choice("Expert", "Expert"))
+            .add_choice(dpp::command_option_choice("Master", "Master"))
+    }
+},
     { "close", "Close a ticket or forum post", cmd::closeCommand },
     { "ticket", "Open a ticket", cmd::ticketCommand, { dpp::command_option(dpp::command_option_type::co_user, "participant", "Add participant", false) }},
     { "code", "Formatting code on Discord", cmd::codeCommand },
     { "project", "Get a project idea", cmd::projectCommand },
     { "rule", "Get the server rules", cmd::ruleCommand, { dpp::command_option(dpp::command_option_type::co_integer, "number", "Rule to mention", false) }}
-};
+    };
 
 int main()
-{
+    {
     std::ifstream configFile("config.json");
     json config = json::parse(configFile);
 
     std::string globalsConfigError;
     if (!globals::loadFromConfig(config, globalsConfigError))
-    {
+        {
         std::cerr << "[!] Invalid configuration: " << globalsConfigError << std::endl;
         return 1;
-    }
+        }
 
     dpp::cluster bot(config["token"], dpp::i_default_intents | dpp::i_message_content);
     ModerationService moderationService(bot);
@@ -41,10 +50,10 @@ int main()
         bot.set_presence(dpp::presence(dpp::presence_status::ps_online, dpp::activity_type::at_watching, "cppdiscord.com"));
 
         if (dpp::run_once<struct bulkRegister>())
-        {
+            {
             std::vector<dpp::slashcommand> slashcommands;
             for (const auto& item : cmdList)
-            {
+                {
                 dpp::slashcommand slashCommand;
                 slashCommand.set_name(item.name);
                 slashCommand.set_description(item.desc);
@@ -57,21 +66,21 @@ int main()
                     slashCommand.set_default_permissions(dpp::permission(item.permissions));
 
                 slashcommands.push_back(slashCommand);
-            }
+                }
             bot.global_bulk_command_create(slashcommands);
-        }
-    });
+            }
+        });
 
     bot.on_slashcommand([&bot](const dpp::slashcommand_t& event) {
         for (const auto& item : cmdList)
-        {
-            if (item.name == event.command.get_command_name())
             {
+            if (item.name == event.command.get_command_name())
+                {
                 item.function(bot, event);
                 return;
+                }
             }
-        }
-    });
+        });
 
     bot.on_message_create([&bot, &moderationService](const dpp::message_create_t& event) {
         if (moderationService.handleMessage(event))
@@ -81,7 +90,7 @@ int main()
 
         if (channel && channel->name == "suggestions")
             utils::suggestion::createSuggestion(bot, event);
-    });
+        });
 
     bot.on_button_click([&bot](const dpp::button_click_t& event) {
         if (event.custom_id == "delSuggestion")
@@ -90,13 +99,13 @@ int main()
             utils::suggestion::editSuggestion(bot, event);
         else if (event.custom_id.starts_with("hint_button_"))
             cmd::handleProjectHintButton(bot, event);
-    });
+        });
 
     bot.on_form_submit([&bot](const dpp::form_submit_t& event) {
         if (event.custom_id == "editModal")
             utils::suggestion::showSuggestionEditModal(bot, event);
-    });
+        });
 
     bot.start(dpp::st_wait);
     return 0;
-}
+    }

src/res/coding/advanced.txt

@@ -0,0 +1,60 @@
+What is the difference between std::list and std::vector?
+What is the difference between std::endl and '\n'?
+How does the static keyword affect a class member?
+What is the purpose of the decltype keyword?
+What is move semantics in C++?
+What is perfect forwarding?
+What are variadic templates?
+What is SFINAE?
+What is the difference between lvalue and rvalue?
+What are smart pointers and why use them?
+What is the rule of three/five/zero?
+What is CRTP (Curiously Recurring Template Pattern)?
+What is type erasure in C++?
+What is the difference between std::function and a function pointer?
+What is the difference between std::shared_ptr and std::unique_ptr?
+What is the difference between std::weak_ptr and std::shared_ptr?
+What is the difference between std::move and std::forward?
+What is the difference between std::vector and std::deque?
+What is the difference between std::map and std::unordered_map?
+What is the difference between std::set and std::unordered_set?
+What is the difference between std::multiset and std::set?
+What is the difference between std::multimap and std::map?
+What is the difference between std::array and std::vector?
+What is the difference between std::string and std::string_view?
+What is the difference between std::tuple and std::pair?
+What is the difference between std::variant and std::any?
+What is the difference between std::optional and std::variant?
+What is the difference between std::async and std::thread?
+What is the difference between std::mutex and std::recursive_mutex?
+What is the difference between std::lock_guard and std::unique_lock?
+What is the difference between std::atomic and std::mutex?
+What is the difference between std::condition_variable and std::atomic?
+What is the difference between std::future and std::promise?
+What is the difference between std::packaged_task and std::async?
+What is the difference between std::chrono::system_clock and std::chrono::steady_clock?
+What is the difference between std::istream and std::ostream?
+What is the difference between std::ifstream and std::ofstream?
+What is the difference between std::stringstream and std::fstream?
+What is the difference between std::ios::in and std::ios::out?
+What is the difference between std::ios::app and std::ios::ate?
+What is the difference between std::ios::binary and std::ios::text?
+What is the difference between std::exception and std::logic_error?
+What is the difference between std::runtime_error and std::logic_error?
+What is the difference between std::bad_alloc and std::bad_cast?
+What is the difference between std::bad_typeid and std::bad_exception?
+What is the difference between std::uncaught_exception and std::uncaught_exceptions?
+What is the difference between std::terminate and std::abort?
+What is the difference between std::set_terminate and std::set_unexpected?
+What is the difference between std::nothrow and std::terminate?
+What is the difference between std::make_shared and std::shared_ptr?
+What is the difference between std::make_unique and std::unique_ptr?
+What is the difference between std::allocator and std::pmr::polymorphic_allocator?
+What is the difference between std::vector<bool> and std::vector<char>?
+What is the difference between std::initializer_list and std::array?
+What is the difference between std::span and std::array_view?
+What is the difference between std::byte and char?
+What is the difference between std::error_code and std::error_condition?
+What is the difference between std::system_error and std::logic_error?
+What is the difference between std::filesystem::path and std::string?
+What is the difference between std::filesystem::directory_iterator and std::filesystem::recursive_directory_iterator?