#pragma once

#include <algorithm>   // Para max, clamp
#include <cstddef>     // Para size_t
#include <functional>  // Para function
#include <string>      // Para allocator, string, basic_string, to_string, operator==, char_traits
#include <utility>     // Para move
#include <vector>      // Para vector

#include "lang.h"             // Para getText
#include "text.h"             // Para Text
#include "ui/service_menu.h"  // Para ServiceMenu

// --- Clase MenuOption: interfaz base para todas las opciones del menú ---
class MenuOption {
    public:
        // --- Enums ---
        enum class Behavior {
            ADJUST,  // Solo puede ajustar valor (como IntOption, BoolOption, ListOption)
            SELECT,  // Solo puede ejecutar acción (como ActionOption, FolderOption)
            BOTH     // Puede tanto ajustar como ejecutar acción (como ActionListOption)
        };

        // --- Constructor y destructor ---
        MenuOption(std::string caption, ServiceMenu::SettingsGroup group, bool hidden = false)
            : caption_(std::move(caption)),
              group_(group),
              hidden_(hidden) {}
        virtual ~MenuOption() = default;

        // --- Getters ---
        [[nodiscard]] auto getCaption() const -> const std::string & { return caption_; }
        [[nodiscard]] auto getGroup() const -> ServiceMenu::SettingsGroup { return group_; }
        [[nodiscard]] auto isHidden() const -> bool { return hidden_; }
        void setHidden(bool hidden) { hidden_ = hidden; }

        [[nodiscard]] virtual auto getBehavior() const -> Behavior = 0;
        [[nodiscard]] virtual auto getValueAsString() const -> std::string { return ""; }
        virtual void adjustValue(bool adjust_up) {}
        [[nodiscard]] virtual auto getTargetGroup() const -> ServiceMenu::SettingsGroup { return ServiceMenu::SettingsGroup::MAIN; }
        virtual void executeAction() {}

        virtual auto getMaxValueWidth(Text *text_renderer) const -> int { return 0; }  // Método virtual para que cada opción calcule el ancho de su valor más largo

    protected:
        // --- Variables ---
        std::string caption_;
        ServiceMenu::SettingsGroup group_;
        bool hidden_;
};

// --- Clases Derivadas ---

class BoolOption : public MenuOption {
    public:
        BoolOption(const std::string &cap, ServiceMenu::SettingsGroup grp, bool *var)
            : MenuOption(cap, grp),
              linked_variable_(var) {}

        [[nodiscard]] auto getBehavior() const -> Behavior override { return Behavior::ADJUST; }
        [[nodiscard]] auto getValueAsString() const -> std::string override {
            return *linked_variable_ ? Lang::getText("[SERVICE_MENU] ON") : Lang::getText("[SERVICE_MENU] OFF");
        }
        void adjustValue(bool /*adjust_up*/) override {
            *linked_variable_ = !*linked_variable_;
        }
        auto getMaxValueWidth(Text *text_renderer) const -> int override {
            return std::max(
                text_renderer->length(Lang::getText("[SERVICE_MENU] ON"), -2),
                text_renderer->length(Lang::getText("[SERVICE_MENU] OFF"), -2));
        }

    private:
        bool *linked_variable_;
};

class IntOption : public MenuOption {
    public:
        IntOption(const std::string &cap, ServiceMenu::SettingsGroup grp, int *var, int min, int max, int step)
            : MenuOption(cap, grp),
              linked_variable_(var),
              min_value_(min),
              max_value_(max),
              step_value_(step) {}

        [[nodiscard]] auto getBehavior() const -> Behavior override { return Behavior::ADJUST; }
        [[nodiscard]] auto getValueAsString() const -> std::string override { return std::to_string(*linked_variable_); }
        void adjustValue(bool adjust_up) override {
            int new_value = *linked_variable_ + (adjust_up ? step_value_ : -step_value_);
            *linked_variable_ = std::clamp(new_value, min_value_, max_value_);
        }
        auto getMaxValueWidth(Text *text_renderer) const -> int override {
            int max_width = 0;

            // Iterar por todos los valores posibles en el rango
            for (int value = min_value_; value <= max_value_; value += step_value_) {
                int width = text_renderer->length(std::to_string(value), -2);
                max_width = std::max(max_width, width);
            }

            return max_width;
        }

    private:
        int *linked_variable_;
        int min_value_, max_value_, step_value_;
};

class ListOption : public MenuOption {
    public:
        ListOption(const std::string &cap, ServiceMenu::SettingsGroup grp, std::vector<std::string> values, std::function<std::string()> current_value_getter, std::function<void(const std::string &)> new_value_setter)
            : MenuOption(cap, grp),
              value_list_(std::move(values)),
              getter_(std::move(current_value_getter)),
              setter_(std::move(new_value_setter)) {
            sync();
        }

        void sync() {
            std::string current_value = getter_();
            for (size_t i = 0; i < value_list_.size(); ++i) {
                if (value_list_[i] == current_value) {
                    list_index_ = i;
                    return;
                }
            }
        }

        [[nodiscard]] auto getBehavior() const -> Behavior override { return Behavior::ADJUST; }
        [[nodiscard]] auto getValueAsString() const -> std::string override {
            return value_list_.empty() ? "" : value_list_[list_index_];
        }
        void adjustValue(bool adjust_up) override {
            if (value_list_.empty()) {
                return;
            }
            size_t size = value_list_.size();
            list_index_ = (adjust_up) ? (list_index_ + 1) % size
                                      : (list_index_ + size - 1) % size;
            setter_(value_list_[list_index_]);
        }
        auto getMaxValueWidth(Text *text_renderer) const -> int override {
            int max_w = 0;
            for (const auto &val : value_list_) {
                max_w = std::max(max_w, text_renderer->length(val, -2));
            }
            return max_w;
        }

    private:
        std::vector<std::string> value_list_;
        std::function<std::string()> getter_;
        std::function<void(const std::string &)> setter_;
        size_t list_index_{0};
};

class FolderOption : public MenuOption {
    public:
        FolderOption(const std::string &cap, ServiceMenu::SettingsGroup grp, ServiceMenu::SettingsGroup target)
            : MenuOption(cap, grp),
              target_group_(target) {}

        [[nodiscard]] auto getBehavior() const -> Behavior override { return Behavior::SELECT; }
        [[nodiscard]] auto getTargetGroup() const -> ServiceMenu::SettingsGroup override { return target_group_; }

    private:
        ServiceMenu::SettingsGroup target_group_;
};

class ActionOption : public MenuOption {
    public:
        ActionOption(const std::string &cap, ServiceMenu::SettingsGroup grp, std::function<void()> action, bool hidden = false)
            : MenuOption(cap, grp, hidden),
              action_(std::move(action)) {}

        [[nodiscard]] auto getBehavior() const -> Behavior override { return Behavior::SELECT; }
        void executeAction() override {
            if (action_) {
                action_();
            }
        }

    private:
        std::function<void()> action_;
};

// Opción de lista con acción
class ActionListOption : public MenuOption {
    public:
        using ValueGetter = std::function<std::string()>;
        using ValueSetter = std::function<void(const std::string &)>;
        using ActionExecutor = std::function<void()>;

        ActionListOption(const std::string &caption, ServiceMenu::SettingsGroup group, std::vector<std::string> options, ValueGetter getter, ValueSetter setter, ActionExecutor action_executor, bool hidden = false)
            : MenuOption(caption, group, hidden),
              options_(std::move(options)),
              value_getter_(std::move(getter)),
              value_setter_(std::move(setter)),
              action_executor_(std::move(action_executor)) {
            updateCurrentIndex();
        }

        [[nodiscard]] auto getBehavior() const -> Behavior override { return Behavior::BOTH; }
        [[nodiscard]] auto getValueAsString() const -> std::string override;
        [[nodiscard]] auto getMaxValueWidth(Text *text) const -> int override;
        void adjustValue(bool up) override;
        void executeAction() override;
        void sync();  // Sincroniza con el valor actual

    private:
        std::vector<std::string> options_;
        ValueGetter value_getter_;
        ValueSetter value_setter_;
        ActionExecutor action_executor_;
        size_t current_index_{0};

        void updateCurrentIndex();
        [[nodiscard]] auto findCurrentIndex() const -> size_t;
};