<?php
/*
 * SOFTWARE LICENSE INFORMATION
 *
 * Copyright (c) 2017 Buttonizer, all rights reserved.
 *
 * This file is part of Buttonizer
 *
 * For detailed information regarding to the licensing of
 * this software, please review the license.txt or visit:
 * https://buttonizer.pro/license/
 */

namespace BZContactButton\Utils;

class Settings
{
    private static $settings = null;
    private static $hasChanges = false;

    /**
     * Initialize settings
     *
     * @return void
     */
    private static function initialize()
    {
        // Register options
        register_setting(BZ_CONTACT_BUTTON_NAME, BZ_CONTACT_BUTTON_NAME . "_settings");

        // Load settings
        self::$settings = get_option(BZ_CONTACT_BUTTON_NAME . "_settings", []);
    }

    /**
     * Load settings
     *
     * @return array
     */
    public static function getSettings(): array
    {
        // Initialize
        if (is_null(self::$settings)) {
            self::initialize();
        }

        return self::$settings;
    }

    /**
     * Reset all settings
     *
     * @return void
     */
    public static function empty()
    {
        self::$settings = [];
    }

    /**
     * Get a setting
     *
     * @param string $key Setting key
     * @param any $default Default setting value
     *
     * @return any
     */
    public static function getSetting(string $key, $default = null)
    {
        // Initialize
        if (is_null(self::$settings)) {
            self::initialize();
        }

        return self::isset($key) ? self::$settings[$key] : $default;
    }

    /**
     * Is a setting set?
     *
     * @param string $key Setting key
     *
     * @return bool Returns if the setting was set
     */
    public static function isset(string $key): bool
    {
        // Initialize
        if (is_null(self::$settings)) {
            self::initialize();
        }

        return isset(self::$settings[$key]);
    }

    /**
     * Set setting
     *
     * @param string $key
     * @param mixed $value
     * @param bool $save
     *
     * @return boolean
     */
    public static function setSetting(string $key, $value, bool $save = false): bool
    {
        // Initialize
        if (is_null(self::$settings)) {
            self::initialize();
        }

        self::$hasChanges = true;
        self::$settings[$key] = $value;

        // Save setting
        if ($save) {
            self::saveUpdatedSettings();
        }

        return true;
    }

    /**
     * Delete setting
     *
     * @param string $key Setting key
     *
     * @return void
     */
    public static function deleteSetting(string $key)
    {
        // Initialize
        if (is_null(self::$settings)) {
            self::initialize();
        }

        unset(self::$settings[$key]);
        self::$hasChanges = true;
    }

    /**
     * Save changes
     *
     * @return bool
     */
    public static function saveUpdatedSettings(): bool
    {
        // No changes
        if (is_null(self::$settings) || !self::$hasChanges) {
            return true;
        }

        // Save setting
        update_option(BZ_CONTACT_BUTTON_NAME . '_settings', self::$settings);

        return true;
    }
}