#pragma once

#include <set>
#include <string>
#include <vector>

#include "cfg/analog.h"
#include "cfg/button.h"

namespace overlay::windows {

    // single button binding entry (primary or alternative)
    struct TemplateButtonEntry {
        unsigned short vKey = INVALID_VKEY;
        ButtonAnalogType analog_type = BAT_NONE;
        std::string device_identifier;
        bool invert = false;
        double debounce_up = 0.0;
        double debounce_down = 0.0;
        int bat_threshold = 0;
        unsigned short velocity_threshold = 0;

        bool is_naive() const { return device_identifier.empty() && vKey != INVALID_VKEY; }
        bool is_device() const { return !device_identifier.empty(); }
        bool is_unbound() const { return device_identifier.empty() && vKey == INVALID_VKEY; }

        static TemplateButtonEntry FromButton(const Button &btn) {
            TemplateButtonEntry e;
            e.vKey = btn.getVKey();
            e.analog_type = btn.getAnalogType();
            e.device_identifier = btn.getDeviceIdentifier();
            e.invert = btn.getInvert();
            e.debounce_up = btn.getDebounceUp();
            e.debounce_down = btn.getDebounceDown();
            e.bat_threshold = btn.getBatThreshold();
            e.velocity_threshold = btn.getVelocityThreshold();
            return e;
        }
    };

    // button binding with primary + alternatives
    struct TemplateButtonBinding {
        std::string name;
        TemplateButtonEntry primary;
        std::vector<TemplateButtonEntry> alternatives;

        TemplateButtonBinding() = default;

        TemplateButtonBinding(std::string name, TemplateButtonEntry primary,
                              std::vector<TemplateButtonEntry> alternatives)
            : name(std::move(name)), primary(std::move(primary)),
              alternatives(std::move(alternatives)) {}

        explicit TemplateButtonBinding(Button &btn) {
            name = btn.getName();
            primary = TemplateButtonEntry::FromButton(btn);
            for (auto &alt : btn.getAlternatives()) {
                alternatives.push_back(TemplateButtonEntry::FromButton(alt));
            }
        }
    };

    // analog binding
    struct TemplateAnalogBinding {
        std::string name;
        std::string device_identifier;
        unsigned short index = 0xFF;
        float sensitivity = 1.f;
        float deadzone = 0.f;
        bool deadzone_mirror = false;
        bool invert = false;
        bool smoothing = false;
        int multiplier = 1;
        bool relative_mode = false;
        uint32_t delay_ms = 0;

        bool is_device() const { return !device_identifier.empty(); }
        bool is_unbound() const { return device_identifier.empty() && index == 0xFF; }

        TemplateAnalogBinding() = default;

        explicit TemplateAnalogBinding(Analog &a) {
            name = a.getName();
            device_identifier = a.getDeviceIdentifier();
            index = a.getIndex();
            sensitivity = a.getSensitivity();
            deadzone = a.getDeadzone();
            deadzone_mirror = a.getDeadzoneMirror();
            invert = a.getInvert();
            smoothing = a.getSmoothing();
            multiplier = a.getMultiplier();
            relative_mode = a.isRelativeMode();
            delay_ms = a.getDelayMs();
        }
    };

    // single light binding entry (primary or alternative)
    struct TemplateLightEntry {
        std::string device_identifier;
        unsigned int index = 0;

        bool is_device() const { return !device_identifier.empty(); }
        bool is_unbound() const { return device_identifier.empty(); }
    };

    // light binding with primary + alternatives
    struct TemplateLightBinding {
        std::string name;
        TemplateLightEntry primary;
        std::vector<TemplateLightEntry> alternatives;

        TemplateLightBinding() = default;

        TemplateLightBinding(std::string name, TemplateLightEntry primary,
                             std::vector<TemplateLightEntry> alternatives)
            : name(std::move(name)), primary(std::move(primary)),
              alternatives(std::move(alternatives)) {}
    };

    // controller preset
    struct ControllerTemplate {
        std::string name;
        std::string game_name;
        bool is_builtin = false;
        std::vector<TemplateButtonBinding> buttons;
        std::vector<TemplateButtonBinding> keypad_buttons;
        std::vector<TemplateAnalogBinding> analogs;
        std::vector<TemplateLightBinding> lights;

        // helpers
        int count_naive_buttons() const;
        int count_device_buttons() const;
        int count_device_analogs() const;
        int count_device_lights() const;
        std::set<std::string> get_used_devices() const;

        // get all binding sources (device_identifier strings used in this preset)
        std::vector<std::string> get_binding_sources() const;

        // get summary of bindings for a specific source (for tooltip display)
        std::string get_source_summary(const std::string &source) const;

        // replace all occurrences of a source device_identifier with a new one
        void rename_source(const std::string &old_id, const std::string &new_id);
    };

    // template management API
    std::vector<ControllerTemplate> get_templates_for_game(const std::string &game_name);
    std::vector<ControllerTemplate> load_user_templates();
    bool save_user_template(
        const ControllerTemplate &tmpl,
        const bool save_buttons,
        const bool save_keypads,
        const bool save_analogs,
        const bool save_lights);

    bool delete_user_template(const std::string &game_name, const std::string &template_name);
    bool rename_user_template(const std::string &game_name,
                              const std::string &old_name, const std::string &new_name);
}