Lumacs/include/lumacs/config.hpp

#pragma once

#include <string>
#include <unordered_map>
#include <variant>
#include <vector>

namespace lumacs {

/// Configuration value type
using ConfigValue = std::variant<bool, int, std::string>;

/// Global configuration manager
class Config {
public:
    Config();

    /// Set a configuration value
    void set(const std::string& key, const ConfigValue& value);

    /// Get a configuration value
    template<typename T>
    T get(const std::string& key, const T& default_value = T{}) const {
        auto it = values_.find(key);
        if (it == values_.end()) {
            return default_value;
        }

        try {
            return std::get<T>(it->second);
        } catch (const std::bad_variant_access&) {
            return default_value;
        }
    }

    /// Check if a key exists
    bool has(const std::string& key) const;

    /// Get all keys
    std::vector<std::string> keys() const;

private:
    std::unordered_map<std::string, ConfigValue> values_;
    void set_defaults();
};

} // namespace lumacs