Registry.h

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#pragma once
 
#include <libultraship.h>
#include <string>
#include <unordered_map>
#include <functional>
#include <set>
 
struct TrackInfo {
    int32_t Id;
    std::string Path; // Path to the custom track
    std::string ResourceName;
    std::string Name;
    std::string DebugName;
    std::string Length;
    const char* MinimapTexture;
    // std::string PreviewTexture;
};
 
struct ActorInfo {
    int32_t Id;
    std::string ResourceName;
    std::string Name;
    std::set<std::string> Tags; // Category for filtering
};

 
template<typename TInfo, typename... TArgs>
// ^ Scary template key word
class Registry {
public:
    using Callback = std::function<void(TArgs...)>;
 
    void Add(TInfo& info, Callback func) {
        info.Id = mCounter++;
        // Needs to allow overwriting to support mod hot-reloading
        mMap[info.ResourceName] = Entry{info, std::move(func)};
    }
 
    const TInfo* GetInfo(const std::string& resourceName) const {
        auto it = mMap.find(resourceName);
        return (it != mMap.end()) ? &it->second.Info : nullptr;
    }
 
    void Invoke(const std::string& resourceName, TArgs... args) {
        auto it = mMap.find(resourceName);
        if (it != mMap.end() && it->second.Func) {
            // Using C++ variadic template expansion to call the function
            printf("[Registry] Invoking %s\n", resourceName.c_str());
            it->second.Func(std::forward<TArgs>(args)...);
        } else {
            printf("[Registry] Error: %s not found or function is null.\n", resourceName.c_str());
        }
    }
 
    bool Find(const std::string& resourceName) const {
        return mMap.find(resourceName) != mMap.end();
    }
 
    std::vector<const TInfo*> GetAllInfo() const {
        std::vector<const TInfo*> list;
        list.reserve(mMap.size());
        for (auto& pair : mMap) {
            list.push_back(&pair.second.Info);
        }
        return list;
    }
 
    // Returns true if item succesfully removed
    // Note that mCounter is not decremented on remove
    bool Remove(const std::string& resourceName) {
        auto it = mMap.find(resourceName);
        if (it != mMap.end()) {
            mMap.erase(it);
            return true;
        }
        return false;
    }
 
    void Clear() {
        mMap.clear();
        mCounter = 0;
    }
 
private:
    int32_t mCounter;
    struct Entry {
        TInfo Info;
        Callback Func;
    };
 
    // key: str, value: lambda function
    std::unordered_map<std::string, Registry::Entry> mMap;
};