<?php

use Never5\DownloadMonitor\Shop\Services\Services;

class DLM_Admin_Settings {

	/**
	 * Get settings URL
	 *
	 * @return string
	 */
	public static function get_url() {
		return admin_url( 'edit.php?post_type=dlm_download&page=download-monitor-settings' );
	}

	/**
	 * register_settings function.
	 *
	 * @access public
	 * @return void
	 */
	public function register_settings() {
		$settings = $this->get_settings();

		// register our options and settings
		foreach ( $settings as $tab_key => $tab ) {

			foreach ( $tab['sections'] as $section_key => $section ) {

				$option_group = 'dlm_' . $tab_key . '_' . $section_key;

				// Check to see if $section['fields'] is set, we could be using it for upsells
				if ( isset( $section['fields'] ) ) {
					foreach ( $section['fields'] as $field ) {

						if( $field['type']  == 'group' ){
							foreach( $field['options'] as $group_field ){

								if ( ! empty( $group_field['name'] )  ) {
									if ( isset( $group_field['std'] ) ) {
										add_option( $group_field['name'], $group_field['std'] );
									}
									register_setting( $option_group, $group_field['name'] );
								}

							}
							continue;
						}

						if ( ! empty( $field['name'] ) && ! in_array( $field['type'], apply_filters( 'dlm_settings_display_only_fields', array( 'action_button' ) ) ) ) {
							if ( isset( $field['std'] ) ) {
								add_option( $field['name'], $field['std'] );
							}
							register_setting( $option_group, $field['name'] );
						}
					}
				}

				// on the overview page, we also register the enabled setting for every gateway. This makes the checkboxes to enable gateways work.
				if ( 'overview' == $section_key ) {
					$gateways = Services::get()->service( 'payment_gateway' )->get_all_gateways();
					if ( ! empty( $gateways ) ) {
						foreach ( $gateways as $gateway ) {
							register_setting( $option_group, 'dlm_gateway_' . esc_attr( $gateway->get_id() ) . '_enabled' );
						}
					}
				}
			}
		}

	}

	/**
	 * Method that return all Download Monitor Settings
	 *
	 * @access public
	 * @return array
	 */
	public function get_settings() {

		$settings = array(
			'general'              => array(
				'title'    => __( 'General', 'download-monitor' ),
				'sections' => array(
					'general' => array(
						'title'  => __( 'Download', 'download-monitor' ),
						'fields' => array(
							array(
								'name'    => 'dlm_default_template',
								'std'     => '',
								'label'   => __( 'Default Template', 'download-monitor' ),
								'desc'    => __( 'Choose which template is used for <code>[download]</code> shortcodes by default (this can be overridden by the <code>format</code> argument).', 'download-monitor' ),
								'type'    => 'select',
								'options' => download_monitor()->service( 'template_handler' )->get_available_templates(),
							),
							array(
								'name'  => 'dlm_custom_template',
								'type'  => 'text',
								'std'   => '',
								'label' => __( 'Custom Template', 'download-monitor' ),
								'desc'  => __( 'Leaving this blank will use the default <code>content-download.php</code> template file. If you enter, for example, <code>button</code>, the <code>content-download-button.php</code> template will be used instead. You can add custom templates inside your theme folder.', 'download-monitor' ),
							),
							array(
								'name'     => 'dlm_shop_enabled',
								'std'      => '',
								'label'    => __( 'Shop Enabled', 'download-monitor' ),
								'cb_label' => __( 'Enable Shop', 'download-monitor' ),
								'desc'     => __( 'If enabled, allows you to sell your downloads via Download Monitor.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_xsendfile_enabled',
								'std'      => '',
								'label'    => __( 'X-Accel-Redirect / X-Sendfile', 'download-monitor' ),
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'desc'     => __( 'If supported, <code>X-Accel-Redirect</code> / <code>X-Sendfile</code> can be used to serve downloads instead of PHP (server requires <code>mod_xsendfile</code>).', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_hotlink_protection_enabled',
								'std'      => '',
								'label'    => __( 'Prevent hotlinking', 'download-monitor' ),
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'desc'     => __( 'If enabled, the download handler will check the PHP referer to see if it originated from your site and if not, redirect them to the homepage.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_allow_x_forwarded_for',
								'std'      => '0',
								'label'    => __( 'Allow Proxy IP Override', 'download-monitor' ),
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'desc'     => __( 'If enabled, Download Monitor will use the X_FORWARDED_FOR HTTP header set by proxies as the IP address. Note that anyone can set this header, making it less secure.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_wp_search_enabled',
								'std'      => '',
								'label'    => __( 'Include in Search', 'download-monitor' ),
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'desc'     => __( "If enabled, downloads will be included in the site's internal search results.", 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_turn_off_file_browser',
								'std'      => '',
								'label'    => __( 'File browser', 'download-monitor' ),
								'cb_label' => __( 'Turn Off', 'download-monitor' ),
								'desc'     => __( 'Disables the directory file browser.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
						),
					),
				),
				'priority' => 10,
			),
			'advanced'             => array(
				'title'    => __( 'Advanced', 'download-monitor' ),
				'sections' => array(
					'page_setup' => array(
						'title'  => __( 'Pages Setup', 'download-monitor' ),
						'fields' => array(
							array(
								'name'        => 'dlm_download_endpoint',
								'type'        => 'text',
								'std'         => 'download',
								'placeholder' => __( 'download', 'download-monitor' ),
								'label'       => __( 'Download Endpoint', 'download-monitor' ),
								'desc'        => sprintf( __( 'Define what endpoint should be used for download links. By default this will be <code>%s</code>.', 'download-monitor' ), home_url( '/download/' ) ),
							),
							array(
								'name'    => 'dlm_download_endpoint_value',
								'std'     => 'ID',
								'label'   => __( 'Endpoint Value', 'download-monitor' ),
								'desc'    => sprintf( __( 'Define what unique value should be used on the end of your endpoint to identify the downloadable file. e.g. ID would give a link like <code>%s</code>', 'download-monitor' ), home_url( '/download/10/' ) ),
								'type'    => 'select',
								'options' => array(
									'ID'   => __( 'Download ID', 'download-monitor' ),
									'slug' => __( 'Download slug', 'download-monitor' ),
								),
							),
							array(
								'name'    => 'dlm_no_access_page',
								'std'     => '',
								'label'   => __( 'No Access Page', 'download-monitor' ),
								'desc'    => __( "Choose what page is displayed when the user has no access to a file. Don't forget to add the <code>[dlm_no_access]</code> shortcode to the page.", 'download-monitor' ),
								'type'    => 'lazy_select',
								'options' => array(),
							),
						),
					),
					'access'     => array(
						'title'  => __( 'Access', 'download-monitor' ),
						'fields' => array(
							array(
								'name'        => 'dlm_no_access_error',
								'std'         => sprintf( __( 'You do not have permission to access this download. %1$sGo to homepage%2$s', 'download-monitor' ), '<a href="' . home_url() . '">', '</a>' ),
								'placeholder' => '',
								'label'       => __( 'No access message', 'download-monitor' ),
								'desc'        => __( "The message that will be displayed to visitors when they don't have access to a file.", 'download-monitor' ),
								'type'        => 'textarea',
							),
							array(
								'name'        => 'dlm_ip_blacklist',
								'std'         => '192.168.0.0/24',
								'label'       => __( 'Blacklist IPs', 'download-monitor' ),
								'desc'        => __( 'List IP Addresses to blacklist, 1 per line. Use IP/CIDR netmask format for ranges. IPv4 examples: <code>198.51.100.1</code> or <code>198.51.100.0/24</code>. IPv6 examples: <code>2001:db8::1</code> or <code>2001:db8::/32</code>.', 'download-monitor' ),
								'placeholder' => '',
								'type'        => 'textarea',
							),
							array(
								'name'        => 'dlm_user_agent_blacklist',
								'std'         => 'Googlebot',
								'label'       => __( 'Blacklist user agents', 'download-monitor' ),
								'desc'        => __( 'List browser user agents to blacklist, 1 per line.  Partial matches are sufficient. Regex matching is allowed by surrounding the pattern with forward slashes, e.g. <code>/^Mozilla.+Googlebot/</code>', 'download-monitor' ),
								'placeholder' => '',
								'type'        => 'textarea',
							),
						),
					),
					'hash'       => array(
						'title'  => __( 'Hashes', 'download-monitor' ),
						'fields' => array(
							array(
								'name' => 'dlm_hash_desc',
								'text' => sprintf( __( 'Hashes can optionally be output via shortcodes, but may cause performance issues with large files. %1$sYou can read more about hashes here%2$s', 'download-monitor' ), '<a href="https://www.download-monitor.com/kb/download-hashes/" target="_blank">', '</a>' ),
								'type' => 'desc',
							),
							array(
								'name'     => 'dlm_generate_hash_md5',
								'std'      => '0',
								'label'    => __( 'MD5 hashes', 'download-monitor' ),
								'cb_label' => __( 'Generate MD5 hash for uploaded files', 'download-monitor' ),
								'desc'     => '',
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_generate_hash_sha1',
								'std'      => '0',
								'label'    => __( 'SHA1 hashes', 'download-monitor' ),
								'cb_label' => __( 'Generate SHA1 hash for uploaded files', 'download-monitor' ),
								'desc'     => '',
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_generate_hash_sha256',
								'std'      => '0',
								'label'    => __( 'SHA256 hashes', 'download-monitor' ),
								'cb_label' => __( 'Generate SHA256 hash for uploaded files', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_generate_hash_crc32b',
								'std'      => '0',
								'label'    => __( 'CRC32B hashes', 'download-monitor' ),
								'cb_label' => __( 'Generate CRC32B hash for uploaded files', 'download-monitor' ),
								'type'     => 'checkbox',
							),
						),
					),
					'logging'    => array(
						'title'  => __( 'Logging', 'download-monitor' ),
						'fields' => array(
							array(
								'name'     => 'dlm_enable_logging',
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'std'      => '1',
								'label'    => __( 'Download Log', 'download-monitor' ),
								'desc'     => __( 'Log download attempts, IP addresses and more.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'    => 'dlm_logging_ip_type',
								'std'     => '',
								'label'   => __( 'IP Address Logging', 'download-monitor' ),
								'desc'    => __( 'Define if and how you like to store IP addresses of users that download your files in your logs.', 'download-monitor' ),
								'type'    => 'select',
								'options' => array(
									'full'       => __( 'Store full IP address', 'download-monitor' ),
									'anonymized' => __( 'Store anonymized IP address (remove last 3 digits)', 'download-monitor' ),
									'none'       => __( 'Store no IP address', 'download-monitor' ),
								),
							),
							array(
								'name'     => 'dlm_logging_ua',
								'std'      => '1',
								'label'    => __( 'User Agent Logging', 'download-monitor' ),
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'desc'     => __( 'If enabled, the user agent (browser) the user uses to download the file will be stored in your logs.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_count_unique_ips',
								'std'      => '',
								'label'    => __( 'Count unique IPs only', 'download-monitor' ),
								'cb_label' => __( 'Enable', 'download-monitor' ),
								'desc'     => sprintf( __( 'If enabled, the counter for each download will only increment and create a log entry once per IP address. Note that this option only works if %1$s is set to %2$s.', 'download-monitor' ), '<strong>' . __( 'IP Address Logging', 'download-monitor' ) . '</strong>', '<strong>' . __( 'Store full IP address', 'download-monitor' ) . '</strong>' ),
								'type'     => 'checkbox',
							),
							array(
								'name'     => 'dlm_log_admin_download_count',
								'std'      => '1',
								'label'    => __( 'Admin count', 'download-monitor' ),
								'cb_label' => __( 'Disable', 'download-monitor' ),
								'desc'     => __( 'If disabled, the counter for each download will not increment when an administrator downloads a file.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
						),
					),
					'misc'       => array(
						'title'  => __( 'Miscellaneous', 'download-monitor' ),
						'fields' => array(
							array(
								'name'  => 'dlm_clear_transients',
								'std'   => '0',
								'label' => __( 'Clear all transients', 'download-monitor' ),
								'desc'  => __( 'Remove all Download Monitor transients, this can solve version caching issues.', 'download-monitor' ),
								'type'  => 'action_button',
								'link'  => self::get_url() . '&tab=advanced&section=misc',
								'priority' => 10
							),
							array(
								'name'     => 'dlm_downloads_path',
								'std'      => '',
								'label'    => __( 'Other downloads path', 'download-monitor' ),
								'desc'     => __( '<strong>!!ATTENTION!! ONLY</strong> modify this setting if you know and are certain of what you are doing. This can cause problems on the download/saving Downloads process if not specified correctly. Prior to modifying this it is advised to <strong>BACKUP YOU DATABASE</strong> in case something goes wrong.<br><br> By default, due to some security issues and restrictions, we only allow downloads from root folder and uploads folder, depending on how your WordPress installation in configured. To be able to download files from somewhere else please specify the path or a more higher path.<br><br>A full documentation can be seen <a href="https://www.download-monitor.com/kb/add-path/" target="_blank">here</a>.', 'download-monitor' ),
								'type'     => 'text',
								'priority' => 60
							),
						),
					),
				),
				'priority' => 20,
			),
			'lead_generation'      => array(
				'title'    => esc_html__( 'Content Locking', 'download-monitor' ),
				'badge'    => true,
				'sections' => array(
					'email_lock'    => array(
						'title'    => esc_html__( 'Email Lock', 'download-monitor' ),
						'fields'   => array(),
						'sections' => array(),
						'badge'    => true,
					),
					'ninja_forms'   => array(
						'title'    => esc_html__( 'Ninja Forms', 'download-monitor' ),
						'fields'   => array(),
						'sections' => array(),
						'badge'    => true,
					),
					'gravity_forms' => array(
						'title'    => esc_html__( 'Gravity Forms', 'download-monitor' ),
						'fields'   => array(),
						'sections' => array(),
						'badge'    => true,
					),
					'twitter_lock'  => array(
						'title'    => esc_html__( 'Twitter Lock', 'download-monitor' ),
						'fields'   => array(),
						'sections' => array(),
						'badge'    => true,
					),
				),
				'priority' => 30,
			),
			'external_hosting'     => array(
				'title'    => esc_html__( 'External Hosting', 'download-monitor' ),
				'badge'    => true,
				'sections' => array(
					'amazon_s3'    => array(
						'title'    => esc_html__( 'Amazon S3', 'download-monitor' ),
						'fields'   => array(),
						'sections' => array(),
						'badge'    => true,
					),
					'google_drive' => array(
						'title'    => esc_html__( 'Google Drive', 'download-monitor' ),
						'fields'   => array(),
						'sections' => array(),
						'badge'    => true,
					),
				),
				'priority' => 40,
			),
			'integration'          => array(
				'title'    => esc_html__( 'Integration', 'download-monitor' ),
				'badge'    => true,
				'sections' => array(),
				'priority' => 50,
			),
			'email_notification'   => array(
				'title'    => esc_html__( 'Emails', 'download-monitor' ),
				'badge'    => true,
				'sections' => array(),
				'priority' => 60,
			),
			'terns_and_conditions' => array(
				'title'    => esc_html__( 'Terms and Conditions', 'download-monitor' ),
				'badge'    => true,
				'sections' => array(),
				'priority' => 70,
			),
		);

		if ( dlm_is_shop_enabled() ) {

			$settings['shop'] = array(
				'title'    => __( 'Shop', 'download-monitor' ),
				'sections' => array(
					'shop' => array(
						'title'  => __( 'Settings', 'download-monitor' ),
						'fields' => array(
							array(
								'name'    => 'dlm_base_country',
								'std'     => 'US',
								'label'   => __( 'Base Country', 'download-monitor' ),
								'desc'    => __( 'Where is your store located?', 'download-monitor' ),
								'type'    => 'select',
								'options' => Services::get()->service( 'country' )->get_countries(),
							),
							array(
								'name'    => 'dlm_currency',
								'std'     => 'USD',
								'label'   => __( 'Currency', 'download-monitor' ),
								'desc'    => __( 'In what currency are you selling?', 'download-monitor' ),
								'type'    => 'select',
								'options' => $this->get_currency_list_with_symbols(),
							),
							array(
								'name'    => 'dlm_currency_pos',
								'std'     => 'left',
								'label'   => __( 'Currency Position', 'download-monitor' ),
								'desc'    => __( 'The position of the currency symbol.', 'download-monitor' ),
								'type'    => 'select',
								'options' => array(
									'left'        => sprintf( __( 'Left (%s)', 'download-monitor' ), Services::get()->service( 'format' )->money( 9.99, array( 'currency_position' => 'left' ) ) ),
									'right'       => sprintf( __( 'Right (%s)', 'download-monitor' ), Services::get()->service( 'format' )->money( 9.99, array( 'currency_position' => 'right' ) ) ),
									'left_space'  => sprintf( __( 'Left with space (%s)', 'download-monitor' ), Services::get()->service( 'format' )->money( 9.99, array( 'currency_position' => 'left_space' ) ) ),
									'right_space' => sprintf( __( 'Right with space (%s)', 'download-monitor' ), Services::get()->service( 'format' )->money( 9.99, array( 'currency_position' => 'right_space' ) ) ),
								),
							),
							array(
								'name'  => 'dlm_decimal_separator',
								'type'  => 'text',
								'std'   => '.',
								'label' => __( 'Decimal Separator', 'download-monitor' ),
								'desc'  => __( 'The decimal separator of displayed prices.', 'download-monitor' ),
							),
							array(
								'name'  => 'dlm_thousand_separator',
								'type'  => 'text',
								'std'   => ',',
								'label' => __( 'Thousand Separator', 'download-monitor' ),
								'desc'  => __( 'The thousand separator of displayed prices.', 'download-monitor' ),
							),
							array(
								'name'     => 'dlm_disable_cart',
								'std'      => '',
								'label'    => __( 'Disable Cart', 'download-monitor' ),
								'cb_label' => __( 'Disable', 'download-monitor' ),
								'desc'     => __( 'If checked, your customers will be sent to your checkout page directly.', 'download-monitor' ),
								'type'     => 'checkbox',
							),
						),
					),
				),
				'priority' => 15,
			);

			$settings['shop']['sections']['page_setup'] = array(
				'title'    => __( 'Pages', 'download-monitor' ),
				'fields'   => array(
					array(
						'name'    => 'dlm_page_cart',
						'std'     => '',
						'label'   => __( 'Cart page', 'download-monitor' ),
						'desc'    => __( 'Your cart page, make sure it has the <code>[dlm_cart]</code> shortcode.', 'download-monitor' ),
						'type'    => 'lazy_select',
						'options' => array(),
					),
					array(
						'name'    => 'dlm_page_checkout',
						'std'     => '',
						'label'   => __( 'Checkout page', 'download-monitor' ),
						'desc'    => __( 'Your checkout page, make sure it has the <code>[dlm_checkout]</code> shortcode.', 'download-monitor' ),
						'type'    => 'lazy_select',
						'options' => array(),
					),
				),
			);

			$settings['shop']['sections'] = array_merge( $settings['shop']['sections'], $this->get_payment_methods_sections() );

		}

		// this is here to maintain backwards compatibility, use 'dlm_settings' instead
		$old_settings = apply_filters( 'download_monitor_settings', array() );

		// This is the correct filter
		$settings = apply_filters( 'dlm_settings', $settings );

		// Backwards compatibility for 4.3 and 4.4.4
		$settings = $this->backwards_compatibility_settings( $old_settings, $settings );

		uasort( $settings, array( 'DLM_Admin_Helper', 'sort_data_by_priority' ) );
		uasort( $settings['advanced']['sections']['misc']['fields'], array( 'DLM_Admin_Helper', 'sort_data_by_priority' ) );
		return $settings;
	}

	/**
	 * Register lazy load setting fields callbacks
	 */
	public function register_lazy_load_callbacks() {
		add_filter( 'dlm_settings_lazy_select_dlm_page_cart', array( $this, 'lazy_select_dlm_no_access_page' ) );
		add_filter( 'dlm_settings_lazy_select_dlm_page_checkout', array( $this, 'lazy_select_dlm_no_access_page' ) );
		add_filter( 'dlm_settings_lazy_select_dlm_no_access_page', array( $this, 'lazy_select_dlm_no_access_page' ) );
	}

	/**
	 * Fetch and returns pages on lazy select for dlm_no_access_page option
	 *
	 * @param array $options
	 *
	 * @return array
	 */
	public function lazy_select_dlm_no_access_page( $options ) {
		return $this->get_pages();
	}

	/**
	 * Backwards compatibility for settings
	 *
	 * @param $old_settings
	 * @param $settings
	 *
	 * @return mixed
	 * @since 4.4.5
	 */
	public function backwards_compatibility_settings( $old_settings, $settings ) {

		// First we check if there is info in $old_settings
		if ( empty( $old_settings ) ) {

			return $settings;
		}

		$compatibility_tabs = array(
			'access',
			'amazon_s3',
			'captcha',
			'downloading_page',
			'email_lock',
			'email_notification',
			'gravity_forms',
			'ninja_forms',
			'terns_and_conditions',
			'twitter_lock',
			'page_addon',
		);

		foreach ( $old_settings as $tab_key => $tab ) {
			// $tab[1] contains the fields inside the setting, not being set means it doesn't have any fields
			if ( ! empty( $tab[1] ) ) {

				if ( in_array( $tab_key, $compatibility_tabs ) ) {

					$tab_title   = false;
					$tab_section = $tab_key;

					if ( 'access' == $tab_key ) {
						$tab_parent = 'advanced';
					}

					if ( 'amazon_s3' == $tab_key ) {
						$tab_parent = 'external_hosting';
					}

					if ( 'captcha' == $tab_key ) {
						$tab_parent = 'integration';
					}

					if ( 'downloading_page' == $tab_key || 'page_addon' == $tab_key ) {
						$tab_parent  = 'advanced';
						$tab_section = 'page_setup';
						$tab_title   = true;
					}

					if ( 'email_lock' == $tab_key || 'twitter_lock' == $tab_key || 'gravity_forms' == $tab_key || 'ninja_forms' == $tab_key ) {
						$tab_parent = 'lead_generation';
					}

					if ( 'email_notification' == $tab_key ) {
						$tab_parent = 'email_notification';
						$tab_title  = true;

						// Reassign the title because the extension overwrittens it
						$settings['email_notification'] = array(
							'title' => esc_html__( 'Emails', 'download-monitor' ),
						);

					}

					if ( 'terns_and_conditions' == $tab_key ) {
						$tab_parent = 'terns_and_conditions';
						$tab_title  = true;
					}

					if ( isset( $tab[0] ) && ! $tab_title ) {

						$settings[ $tab_parent ]['sections'][ $tab_section ] = array(
							'title'    => $tab[0],
							'sections' => array(),
						);
					}

					// Let's check if there are sections or fields so we can add other fields and not overwrite them
					if ( isset( $settings[ $tab_parent ]['sections'] ) && isset( $settings[ $tab_parent ]['sections'][ $tab_section ]['fields'] ) ) {

						$settings[ $tab_parent ]['sections'][ $tab_section ]['fields'] = array_merge( $settings[ $tab_parent ]['sections'][ $tab_section ]['fields'], $tab[1] );
					} else {
						$settings[ $tab_parent ]['sections'][ $tab_section ]['fields'] = $tab[1];
					}

					// Unset the previous used tab - new tabs are already provided thanks to upsells
					if ( 'email_notification' != $tab_key && 'terns_and_conditions' != $tab_key ) {
						unset( $settings[ $tab_key ] );
					}
				} else {

					foreach ( $tab[1] as $other_tab_fields ) {

						$settings['other']['sections']['other']['fields'][] = $other_tab_fields;
					}
				}
			}
		}

		// Check to see if there is any info in Other tab
		if ( isset( $settings['other'] ) ) {
			$settings['other']['title'] = esc_html__( 'Other', 'download-monitor' );
		}

		return $settings;
	}


	/**
	 * Return pages with ID => Page title format
	 *
	 * @return array
	 */
	private function get_pages() {

		// pages
		$pages = array(
			array(
				'key' => 0,
				'lbl' => __( 'Select Page', 'download-monitor' ),
			),
		);

		// get pages from db
		$db_pages = get_pages();

		// check and loop
		if ( count( $db_pages ) > 0 ) {
			foreach ( $db_pages as $db_page ) {
				$pages[] = array(
					'key' => $db_page->ID,
					'lbl' => $db_page->post_title,
				);
			}
		}

		// return pages
		return $pages;
	}

	/**
	 * Returns the list of all available currencies and add the symbol to the label
	 *
	 * @return array
	 */
	private function get_currency_list_with_symbols() {

		/** @var \Never5\DownloadMonitor\Shop\Helper\Currency $currency_helper */
		$currency_helper = Services::get()->service( 'currency' );

		$currencies = $currency_helper->get_available_currencies();

		// get_currency_symbol

		if ( ! empty( $currencies ) ) {
			foreach ( $currencies as $k => $v ) {
				$currencies[ $k ] = $v . ' (' . $currency_helper->get_currency_symbol( $k ) . ')';
			}
		}

		return $currencies;
	}

	/**
	 * Generate payment method sections for settings
	 *
	 * @return array
	 */
	private function get_payment_methods_sections() {

		$gateways = Services::get()->service( 'payment_gateway' )->get_all_gateways();

		// formatted array of gateways with id=>title map (used in select fields)
		$gateways_formatted = array();
		if ( ! empty( $gateways ) ) {
			foreach ( $gateways as $gateway ) {
				$gateways_formatted[ $gateway->get_id() ] = $gateway->get_title();
			}
		}

		/** Generate the overview sections */
		$sections = array(
			'overview' => array(
				'title'  => __( 'Payment overview', 'download-monitor' ),
				'fields' => array(
					array(
						'name'     => '',
						'std'      => 'USD',
						'label'    => __( 'Enabled Gateways', 'download-monitor' ),
						'desc'     => __( 'Check all payment methods you want to enable on your webshop.', 'download-monitor' ),
						'type'     => 'gateway_overview',
						'gateways' => $gateways,
					),
					array(
						'name'    => 'dlm_default_gateway',
						'std'     => 'paypal',
						'label'   => __( 'Default Gateway', 'download-monitor' ),
						'desc'    => __( 'This payment method will be pre-selected on your checkout page.', 'download-monitor' ),
						'type'    => 'select',
						'options' => $gateways_formatted,
					),
				),
			),
		);

		/** Generate sections for all gateways */
		if ( ! empty( $gateways ) ) {
			/** @var \Never5\DownloadMonitor\Shop\Checkout\PaymentGateway\PaymentGateway $gateway */
			foreach ( $gateways as $gateway ) {

				// all gateways have an 'enabled' option by default
				$fields = array(
					array(
						'name'     => 'dlm_gateway_' . esc_attr( $gateway->get_id() ) . '_enabled',
						'std'      => '0',
						'label'    => __( 'Enabled', 'download-monitor' ),
						'cb_label' => __( 'Enable Gateway', 'download-monitor' ),
						'desc'     => __( 'Check this to allow your customers to use this payment method to pay at your checkout page.', 'download-monitor' ),
						'type'     => 'checkbox',
					),
				);

				$gateway_settings = $gateway->get_settings();
				if ( ! empty( $gateway_settings ) ) {
					$escaped_id = esc_attr( $gateway->get_id() );
					foreach ( $gateway_settings as $gw ) {
						$prefixed_field = $gw;

						$prefixed_field['name'] = 'dlm_gateway_' . $escaped_id . '_' . $prefixed_field['name'];

						$fields[] = $prefixed_field;
					}
				}

				// dlm_gateway_paypal_

				$sections[ $gateway->get_id() ] = array(
					'title'  => $gateway->get_title(),
					'fields' => $fields,
				);
			}
		}

		return $sections;
	}

}