// DragonX Wallet - ImGui Edition
// Copyright 2024-2026 The Hush Developers
// Released under the GPLv3

#pragma once

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

namespace dragonx {
namespace config {

/**
 * @brief Application settings manager
 * 
 * Handles loading and saving of user preferences.
 */
class Settings {
public:
    Settings();
    ~Settings();

    /**
     * @brief Load settings from default location
     * @return true if loaded successfully
     */
    bool load();

    /**
     * @brief Load settings from specific path
     * @param path Path to settings file
     * @return true if loaded successfully
     */
    bool load(const std::string& path);

    /**
     * @brief Save settings to default location
     * @return true if saved successfully
     */
    bool save();

    /**
     * @brief Save settings to specific path
     * @param path Path to settings file
     * @return true if saved successfully
     */
    bool save(const std::string& path);

    /**
     * @brief Get default settings file path
     */
    static std::string getDefaultPath();

    // Theme
    std::string getTheme() const { return theme_; }
    void setTheme(const std::string& theme) { theme_ = theme; }

    // Unified skin
    std::string getSkinId() const { return skin_id_; }
    void setSkinId(const std::string& id) { skin_id_ = id; }

    // Privacy
    bool getSaveZtxs() const { return save_ztxs_; }
    void setSaveZtxs(bool save) { save_ztxs_ = save; }

    bool getAutoShield() const { return auto_shield_; }
    void setAutoShield(bool shield) { auto_shield_ = shield; }

    bool getUseTor() const { return use_tor_; }
    void setUseTor(bool tor) { use_tor_ = tor; }

    // Fees
    bool getAllowCustomFees() const { return allow_custom_fees_; }
    void setAllowCustomFees(bool allow) { allow_custom_fees_ = allow; }

    double getDefaultFee() const { return default_fee_; }
    void setDefaultFee(double fee) { default_fee_ = fee; }

    // Price
    bool getFetchPrices() const { return fetch_prices_; }
    void setFetchPrices(bool fetch) { fetch_prices_ = fetch; }

    // Explorer URLs
    std::string getTxExplorerUrl() const { return tx_explorer_url_; }
    void setTxExplorerUrl(const std::string& url) { tx_explorer_url_ = url; }

    std::string getAddressExplorerUrl() const { return address_explorer_url_; }
    void setAddressExplorerUrl(const std::string& url) { address_explorer_url_ = url; }

    // Language
    std::string getLanguage() const { return language_; }
    void setLanguage(const std::string& lang) { language_ = lang; }

    // Visual effects
    bool getAcrylicEnabled() const { return acrylic_enabled_; }
    void setAcrylicEnabled(bool v) { acrylic_enabled_ = v; }

    int getAcrylicQuality() const { return acrylic_quality_; }
    void setAcrylicQuality(int v) { acrylic_quality_ = v; }

    float getBlurMultiplier() const { return blur_multiplier_; }
    void setBlurMultiplier(float v) { blur_multiplier_ = v; }

    bool getReducedTransparency() const { return ui_opacity_ >= 0.99f; }
    void setReducedTransparency(bool v) { if (v) ui_opacity_ = 1.0f; }

    float getUIOpacity() const { return ui_opacity_; }
    void setUIOpacity(float v) { ui_opacity_ = std::max(0.3f, std::min(1.0f, v)); }

    float getWindowOpacity() const { return window_opacity_; }
    void setWindowOpacity(float v) { window_opacity_ = std::max(0.3f, std::min(1.0f, v)); }

    float getNoiseOpacity() const { return noise_opacity_; }
    void setNoiseOpacity(float v) { noise_opacity_ = v; }

    // Gradient background mode (use gradient variant of theme background)
    bool getGradientBackground() const { return gradient_background_; }
    void setGradientBackground(bool v) { gradient_background_ = v; }

    // Balance layout (string ID, e.g. "classic", "donut")
    std::string getBalanceLayout() const { return balance_layout_; }
    void setBalanceLayout(const std::string& v) { balance_layout_ = v; }

    // Console scanline effect
    bool getScanlineEnabled() const { return scanline_enabled_; }
    void setScanlineEnabled(bool v) { scanline_enabled_ = v; }

    // Hidden addresses (addresses hidden from the UI by the user)
    const std::set<std::string>& getHiddenAddresses() const { return hidden_addresses_; }
    bool isAddressHidden(const std::string& addr) const { return hidden_addresses_.count(addr) > 0; }
    void hideAddress(const std::string& addr) { hidden_addresses_.insert(addr); }
    void unhideAddress(const std::string& addr) { hidden_addresses_.erase(addr); }
    int getHiddenAddressCount() const { return (int)hidden_addresses_.size(); }

    // Favorite addresses (pinned to top of address list)
    const std::set<std::string>& getFavoriteAddresses() const { return favorite_addresses_; }
    bool isAddressFavorite(const std::string& addr) const { return favorite_addresses_.count(addr) > 0; }
    void favoriteAddress(const std::string& addr) { favorite_addresses_.insert(addr); }
    void unfavoriteAddress(const std::string& addr) { favorite_addresses_.erase(addr); }
    int getFavoriteAddressCount() const { return (int)favorite_addresses_.size(); }

    // First-run wizard
    bool getWizardCompleted() const { return wizard_completed_; }
    void setWizardCompleted(bool v) { wizard_completed_ = v; }

    // Security — auto-lock timeout (seconds; 0 = disabled)
    int getAutoLockTimeout() const { return auto_lock_timeout_; }
    void setAutoLockTimeout(int seconds) { auto_lock_timeout_ = seconds; }

    // Security — unlock duration (seconds) for walletpassphrase
    int getUnlockDuration() const { return unlock_duration_; }
    void setUnlockDuration(int seconds) { unlock_duration_ = seconds; }

    // Security — PIN unlock enabled
    bool getPinEnabled() const { return pin_enabled_; }
    void setPinEnabled(bool v) { pin_enabled_ = v; }

    // Daemon — keep running in background when closing the app
    bool getKeepDaemonRunning() const { return keep_daemon_running_; }
    void setKeepDaemonRunning(bool v) { keep_daemon_running_ = v; }

    // Daemon — stop externally-started daemons on exit (default: false)
    bool getStopExternalDaemon() const { return stop_external_daemon_; }
    void setStopExternalDaemon(bool v) { stop_external_daemon_ = v; }

    // Verbose diagnostic logging (connection attempts, daemon state, port owner, etc.)
    bool getVerboseLogging() const { return verbose_logging_; }
    void setVerboseLogging(bool v) { verbose_logging_ = v; }

    // Daemon — debug logging categories
    const std::set<std::string>& getDebugCategories() const { return debug_categories_; }
    void setDebugCategories(const std::set<std::string>& cats) { debug_categories_ = cats; }
    bool hasDebugCategory(const std::string& cat) const { return debug_categories_.count(cat) > 0; }
    void toggleDebugCategory(const std::string& cat) {
        if (debug_categories_.count(cat)) debug_categories_.erase(cat);
        else debug_categories_.insert(cat);
    }

    // Visual effects — animated theme effects (hue cycling, shimmer, glow, etc.)
    bool getThemeEffectsEnabled() const { return theme_effects_enabled_; }
    void setThemeEffectsEnabled(bool v) { theme_effects_enabled_ = v; }

    // Low-spec mode — disables heavy visual effects for better performance
    bool getLowSpecMode() const { return low_spec_mode_; }
    void setLowSpecMode(bool v) { low_spec_mode_ = v; }

    // Market — last selected exchange + pair
    std::string getSelectedExchange() const { return selected_exchange_; }
    void setSelectedExchange(const std::string& v) { selected_exchange_ = v; }
    std::string getSelectedPair() const { return selected_pair_; }
    void setSelectedPair(const std::string& v) { selected_pair_ = v; }

    // Pool mining
    std::string getPoolUrl() const { return pool_url_; }
    void setPoolUrl(const std::string& v) { pool_url_ = v; }
    std::string getPoolAlgo() const { return pool_algo_; }
    void setPoolAlgo(const std::string& v) { pool_algo_ = v; }
    std::string getPoolWorker() const { return pool_worker_; }
    void setPoolWorker(const std::string& v) { pool_worker_ = v; }
    int getPoolThreads() const { return pool_threads_; }
    void setPoolThreads(int v) { pool_threads_ = v; }
    bool getPoolTls() const { return pool_tls_; }
    void setPoolTls(bool v) { pool_tls_ = v; }
    bool getPoolHugepages() const { return pool_hugepages_; }
    void setPoolHugepages(bool v) { pool_hugepages_ = v; }
    bool getPoolMode() const { return pool_mode_; }
    void setPoolMode(bool v) { pool_mode_ = v; }

    // Mine when idle (auto-start mining when system is idle)
    bool getMineWhenIdle() const { return mine_when_idle_; }
    void setMineWhenIdle(bool v) { mine_when_idle_ = v; }
    int getMineIdleDelay() const { return mine_idle_delay_; }
    void setMineIdleDelay(int seconds) { mine_idle_delay_ = std::max(30, seconds); }

    // Saved pool URLs (user-managed favorites dropdown)
    const std::vector<std::string>& getSavedPoolUrls() const { return saved_pool_urls_; }
    void addSavedPoolUrl(const std::string& url) {
        // Don't add duplicates
        for (const auto& u : saved_pool_urls_) if (u == url) return;
        saved_pool_urls_.push_back(url);
    }
    void removeSavedPoolUrl(const std::string& url) {
        saved_pool_urls_.erase(
            std::remove(saved_pool_urls_.begin(), saved_pool_urls_.end(), url),
            saved_pool_urls_.end());
    }

    // Saved pool worker addresses (user-managed favorites dropdown)
    const std::vector<std::string>& getSavedPoolWorkers() const { return saved_pool_workers_; }
    void addSavedPoolWorker(const std::string& addr) {
        for (const auto& a : saved_pool_workers_) if (a == addr) return;
        saved_pool_workers_.push_back(addr);
    }
    void removeSavedPoolWorker(const std::string& addr) {
        saved_pool_workers_.erase(
            std::remove(saved_pool_workers_.begin(), saved_pool_workers_.end(), addr),
            saved_pool_workers_.end());
    }

    // Font scale (user accessibility setting, 1.0–1.5)
    float getFontScale() const { return font_scale_; }
    void setFontScale(float v) { font_scale_ = std::max(1.0f, std::min(1.5f, v)); }

    // Window size persistence (logical pixels at 1x scale)
    int getWindowWidth()  const { return window_width_; }
    int getWindowHeight() const { return window_height_; }
    void setWindowSize(int w, int h) { window_width_ = w; window_height_ = h; }

private:
    std::string settings_path_;

    // Settings values
    std::string theme_ = "dragonx";
    std::string skin_id_ = "dragonx";
    bool save_ztxs_ = true;
    bool auto_shield_ = true;
    bool use_tor_ = false;
    bool allow_custom_fees_ = false;
    double default_fee_ = 0.0001;
    bool fetch_prices_ = true;
    std::string tx_explorer_url_ = "https://explorer.dragonx.is/tx/";
    std::string address_explorer_url_ = "https://explorer.dragonx.is/address/";
    std::string language_ = "en";
    bool acrylic_enabled_ = true;
    int acrylic_quality_ = 2;
    float blur_multiplier_ = 0.10f;
    float noise_opacity_ = 0.5f;
    bool gradient_background_ = false;
    float ui_opacity_ = 0.50f;          // Card/sidebar opacity (0.3–1.0, 1.0 = opaque)
    float window_opacity_ = 0.75f;      // Background alpha (0.3–1.0, <1 = desktop visible)
    std::string balance_layout_ = "classic";
    bool scanline_enabled_ = true;
    std::set<std::string> hidden_addresses_;
    std::set<std::string> favorite_addresses_;
    bool wizard_completed_ = false;
    int auto_lock_timeout_ = 900;   // 15 minutes
    int unlock_duration_ = 600;     // 10 minutes
    bool pin_enabled_ = false;
    bool keep_daemon_running_ = false;
    bool stop_external_daemon_ = false;
    bool verbose_logging_ = false;
    std::set<std::string> debug_categories_;
    bool theme_effects_enabled_ = true;
    bool low_spec_mode_ = false;
    std::string selected_exchange_ = "TradeOgre";
    std::string selected_pair_ = "DRGX/BTC";

    // Pool mining
    std::string pool_url_       = "pool.dragonx.is:3433";
    std::string pool_algo_      = "rx/hush";
    std::string pool_worker_    = "x";
    int         pool_threads_   = 0;
    bool        pool_tls_       = false;
    bool        pool_hugepages_ = true;
    bool        pool_mode_      = false;   // false=solo, true=pool
    bool        mine_when_idle_ = false;   // auto-start mining when system idle
    int         mine_idle_delay_= 120;     // seconds of idle before mining starts
    std::vector<std::string> saved_pool_urls_; // user-saved pool URL favorites
    std::vector<std::string> saved_pool_workers_; // user-saved worker address favorites

    // Font scale (user accessibility, 1.0–3.0; 1.0 = default)
    float       font_scale_     = 1.0f;

    // Window size (logical pixels at 1x scale; 0 = use default 1200×775)
    int         window_width_   = 0;
    int         window_height_  = 0;
};

} // namespace config
} // namespace dragonx