<?php
namespace Ari_Stream_Quiz\Helpers;

define( 'ARISTREAMQUIZ_SETTINGS_GROUP', 'ari_stream_quiz' );
define( 'ARISTREAMQUIZ_SETTINGS_NAME', 'ari_stream_quiz_settings' );

define( 'ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE', 'ari-stream-quiz-settings-general' );
define( 'ARISTREAMQUIZ_SETTINGS_SHARING_PAGE', 'ari-stream-quiz-settings-sharing' );
define( 'ARISTREAMQUIZ_SETTINGS_ADVANCED_PAGE', 'ari-stream-quiz-settings-advanced' );

define( 'ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION', 'ari_stream_quiz_general_section' );
define( 'ARISTREAMQUIZ_SETTINGS_SHARING_SECTION', 'ari_stream_quiz_sharing_section' );
define( 'ARISTREAMQUIZ_SETTINGS_TRIVIAQUIZ_SECTION', 'ari_stream_quiz_triviaquiz_section' );
define( 'ARISTREAMQUIZ_SETTINGS_MAILCHIMP_SECTION', 'ari_stream_quiz_mailchimp_section' );
define( 'ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION', 'ari_stream_quiz_sharing_triviacontent_section' );
define( 'ARISTREAMQUIZ_SETTINGS_ADVANCED_SECTION', 'ari_stream_quiz_advanced_section' );

define( 'ARISTREAMQUIZ_SETTINGS_ARRAY_DELIMITER', ';' );

use Ari_Stream_Quiz\Helpers\Helper as Helper;

class Settings {
    static private $options = null;

    static private $default_settings = array(
        'theme' => ARISTREAMQUIZ_THEME_DEFAULT,

        'smart_scroll' => true,

        'scroll_duration' => 600,

        'scroll_offset' => 0,

        'custom_styles' => '',

        'show_results' => '', // empty, 'immediately', 'on_complete'

        'show_questions_oncomplete' => true,

        'share_trivia_title' => 'You got {{userScore}} out of {{maxScore}} correct',

        'share_trivia_facebook_title' => 'I got {{userScore}} out of {{maxScore}}. What about you?',

        'share_trivia_facebook_content' => '{{content}}',

        'share_trivia_twitter_content' => 'I got {{userScore}} out of {{maxScore}}. What about you?',

        'warning_on_exit' => false,

        'mailchimp_apikey' => '',

        'lazy_load' => true,

        'facebook_app_id' => '',

        'facebook_load_sdk' => true,

        'share_buttons' => array( 'facebook', 'twitter', 'gplus' ),
    );

    public static function init() {
        register_setting(
            ARISTREAMQUIZ_SETTINGS_GROUP,
            ARISTREAMQUIZ_SETTINGS_NAME,
            array( __CLASS__, 'sanitize' )
        );

        add_settings_section(
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION,
            '', // Title
            array( __CLASS__, 'render_general_section_info' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE
        );

        add_settings_section(
            ARISTREAMQUIZ_SETTINGS_MAILCHIMP_SECTION,
            '', // Title
            array( __CLASS__, 'render_mailchimp_section_info' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE
        );

        add_settings_section(
            ARISTREAMQUIZ_SETTINGS_SHARING_SECTION,
            '', // Title
            array( __CLASS__, 'render_sharing_section_info' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE
        );

        add_settings_section(
            ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION,
            '', // Title
            array( __CLASS__, 'render_sharing_triviacontent_section_info' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE
        );

        add_settings_section(
            ARISTREAMQUIZ_SETTINGS_ADVANCED_SECTION,
            '', // Title
            array( __CLASS__, 'render_advanced_section_info' ),
            ARISTREAMQUIZ_SETTINGS_ADVANCED_PAGE
        );

        add_settings_field(
            'theme',
            self::format_option_name(
                __( 'Default theme', 'ari-stream-quiz' ),

                __( 'The selected theme will be used for all quizzes by default if it is not overridden in quiz settings.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_general_theme' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        add_settings_field(
            'smart_scroll',
            self::format_option_name(
                __( 'Smart scroll', 'ari-stream-quiz' ),

                __( 'If the parameter is enabled, the extension will automatically scroll to next element (question, quiz result and etc.) during quiz session.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_general_smart_scroll' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        add_settings_field(
            'scroll_duration',
            self::format_option_name(
                __( 'Scroll duration', 'ari-stream-quiz' ),

                __( 'The duration in milliseconds of scrolling animation.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_general_scroll_duration' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        add_settings_field(
            'scroll_offset',
            self::format_option_name(
                __( 'Scroll offset', 'ari-stream-quiz' ),

                __( 'The defined offset in pixels will be added to final top position, useful if template contains fixed elements. Possible to use negative values.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_general_scroll_offset' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        add_settings_field(
            'show_questions_oncomplete',
            self::format_option_name(
                __( 'Show questions at the end', 'ari-stream-quiz' ),

                __( 'If it is enabled, all questions will be shown on quiz final page otherwise questions will be hidden.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_general_show_questions_oncomplete' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        add_settings_field(
            'warning_on_exit',
            self::format_option_name(
                __( 'Warning on exit', 'ari-stream-quiz' ),

                __( 'Warning message will be shown if a user leaves non-completed quiz.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_general_warning_on_exit' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        // Trivia quiz parameters
        add_settings_field(
            'show_results',
            self::format_option_name(
                __( 'Show result per question', 'ari-stream-quiz' ),

                __( 'Specify should quiz takers see correct answers or not.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_triviaquiz_show_results' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_GENERAL_SECTION
        );

        // MailChimp parameters
        add_settings_field(
            'mailchimp_apikey',
            self::format_option_name(
                __( 'API key', 'ari-stream-quiz' ),

                __( 'API key is required for integration with MailChimp service. Login to your MailChimp account, generate API key, copy it and populate the parameter with it.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_mailchimp_api_key' ),
            ARISTREAMQUIZ_SETTINGS_GENERAL_PAGE,
            ARISTREAMQUIZ_SETTINGS_MAILCHIMP_SECTION
        );

        // Sharing parameters
        add_settings_field(
            'facebook_app_id',
            self::format_option_name(
                __( 'Facebook App ID', 'ari-stream-quiz' ),

                __( 'App ID is required to use "Facebook" share button. If App ID is not defined, it will not be possible to possible to title, description and image for sharing content.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_share_facebook_app_id' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_SECTION
        );

        add_settings_field(
            'share_buttons',
            self::format_option_name(
                __( 'Share buttons', 'ari-stream-quiz' ),

                __( 'The selected share buttons will be shown on quiz final page.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_share_share_buttons' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_SECTION
        );

        // Sharing content - trivia quiz
        add_settings_field(
            'share_trivia_description',
            '',
            array( __CLASS__, 'render_share_triviaquiz_description' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION
        );

        add_settings_field(
            'share_trivia_title',
            __( 'Title on result page', 'ari-stream-quiz' ),
            array( __CLASS__, 'render_share_triviaquiz_title' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION
        );

        add_settings_field(
            'share_trivia_facebook_title',
            __( 'Title of Facebook post', 'ari-stream-quiz' ),
            array( __CLASS__, 'render_share_triviaquiz_facebook_title' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION
        );

        add_settings_field(
            'share_trivia_facebook_content',
            __( 'Content of Facebook post', 'ari-stream-quiz' ),
            array( __CLASS__, 'render_share_triviaquiz_facebook_content' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION
        );

        add_settings_field(
            'share_trivia_twitter_content',
            __( 'Content of Twitter post', 'ari-stream-quiz' ),
            array( __CLASS__, 'render_share_triviaquiz_twitter_content' ),
            ARISTREAMQUIZ_SETTINGS_SHARING_PAGE,
            ARISTREAMQUIZ_SETTINGS_SHARING_TRIVIACONTENT_SECTION
        );

        // Advanced parameters
        add_settings_field(
            'facebook_load_sdk',
            self::format_option_name(
                __( 'Load Facebook SDK', 'ari-stream-quiz' ),

                __( 'If template or another plugin also loads Facebook JS SDK, it is possible to disabled SDK loading by the plugin to avoid conflicts.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_advanced_facebook_load_sdk' ),
            ARISTREAMQUIZ_SETTINGS_ADVANCED_PAGE,
            ARISTREAMQUIZ_SETTINGS_ADVANCED_SECTION
        );

        add_settings_field(
            'lazy_load',
            self::format_option_name(
                __( 'Images lazy loading', 'ari-stream-quiz' ),

                __( 'If the parameter is enabled, images in questions and answers will be loaded only when quiz is started (if "Start quiz" button is used) to increase page speed and a loading icon will be shown until images are loaded.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_advanced_lazy_load' ),
            ARISTREAMQUIZ_SETTINGS_ADVANCED_PAGE,
            ARISTREAMQUIZ_SETTINGS_ADVANCED_SECTION
        );

        add_settings_field(
            'custom_styles',
            self::format_option_name(
                __( 'Custom CSS styles', 'ari-stream-quiz' ),

                __( 'The defined CSS rules will be added on frontend pages with quizzes. Can be used to resolve style conflicts or for customization.', 'ari-stream-quiz' )
            ),
            array( __CLASS__, 'render_advanced_custom_styles' ),
            ARISTREAMQUIZ_SETTINGS_ADVANCED_PAGE,
            ARISTREAMQUIZ_SETTINGS_ADVANCED_SECTION
        );
    }

    public static function options() {
        if ( ! is_null( self::$options ) )
            return self::$options;

        self::$options = get_option( ARISTREAMQUIZ_SETTINGS_NAME );

        return self::$options;
    }

    public static function get_option( $name, $default = null ) {
        $options = self::options();

        $val = $default;

        if ( isset( $options[$name] ) ) {
            $val = $options[$name];
        } else if ( is_null( $default) && isset( self::$default_settings[$name] ) ) {
            $val = self::$default_settings[$name];
        }

        return $val;
    }

    public static function format_option_name( $title, $tooltip = '' ) {
        $html = $title;

        if ( $tooltip ) {
            $html = sprintf(
                '<span class="tooltipped" data-position="top" data-tooltip="%2$s">%1$s</span>',
                $title,
                esc_attr( $tooltip )
            );
        }

        return $html;
    }

    public static function render_header( $message, $class = '' ) {
        printf(
            '<div class="section-header %2$s">%1$s</div>',
            $message,
            $class
        );
    }

    public static function render_general_section_info() {
        self::render_header( __( 'Contains global parameters for configuration quizzes look\'n\'feel.', 'ari-stream-quiz' ), 'top' );
    }

    public static function render_mailchimp_section_info() {
        self::render_header( __( 'The parameters are used for integration with MailChimp service', 'ari-stream-quiz' ) );
    }

    public static function render_sharing_section_info() {
        self::render_header( __( 'Contains parameters for configuration share buttons', 'ari-stream-quiz' ), 'top' );
    }

    public static function render_sharing_triviacontent_section_info() {
        self::render_header( __( 'This parameters section is used to configure content for quiz final page.', 'ari-stream-quiz' ), 'top' );
    }

    public static function render_share_triviaquiz_description() {
        printf(
            '<div class="settings-description">%s</div>',
            __( 'The following predefined variables are supported: <ul><li><b>{{userScore}}</b> contains number of correctly answered questions</li><li><b>{{maxScore}}</b> contains number of questions</li><li><b>{{title}}</b> contains title of result template</li><li><b>{{content}}</b> contains content of result template</li><li><b>{{quiz}}</b> contain quiz name</li></ul>', 'ari-stream-quiz' )
        );
    }

    public static function render_advanced_section_info() {
        self::render_header( __( 'This section contains advanced parameters for fine tuning of the plugin', 'ari-stream-quiz' ), 'top' );
    }

    public static function render_general_theme() {
        $val = Helper::resolve_theme_name( self::get_option( 'theme' ) );
        $themes = Helper::get_themes();

        $html = sprintf(
            '<select id="ddlTheme" name="%1$s[theme]" class="browser-default">',
            ARISTREAMQUIZ_SETTINGS_NAME
        );

        foreach ( $themes as $theme ) {
            $html .= sprintf(
                '<option value="%1$s"%2$s>%1$s</option>',
                $theme,
                $theme == $val ? ' selected="selected"' : ''
            );
        }

        $html .= '</select>';

        echo $html;
    }

    public static function render_general_scroll_offset() {
        $val = self::get_option( 'scroll_offset' );

        printf(
            '<input type="number" class="input-small center-align" id="tbxScrollOffset" name="%1$s[scroll_offset]" value="%2$s" /> %3$s',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val ),
            __( 'pixels', 'ari-stream-quiz' )
        );
    }

    public static function render_general_scroll_duration() {
        $val = self::get_option( 'scroll_duration' );

        printf(
            '<input type="number" class="input-small center-align" id="tbxScrollDuration" min="0" name="%1$s[scroll_duration]" value="%2$s" /> %3$s',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val ),
            __( 'milliseconds', 'ari-stream-quiz' )
        );
    }

    public static function render_general_smart_scroll() {
        $val = self::get_option( 'smart_scroll' );

        printf(
            '<input type="checkbox" class="filled-in" id="chkSmartScroll" name="%1$s[smart_scroll]" value="1"%2$s /><label for="chkSmartScroll"> </label>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            $val ? ' checked="checked"' : ''
        );
    }

    public static function render_general_show_questions_oncomplete() {
        $val = self::get_option( 'show_questions_oncomplete' );

        printf(
            '<input type="checkbox" class="filled-in" id="chkShowQuestionsOnComplete" name="%1$s[show_questions_oncomplete]" value="1"%2$s /><label for="chkShowQuestionsOnComplete"> </label>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            $val ? ' checked="checked"' : ''
        );
    }

    public static function render_general_warning_on_exit() {
        $val = self::get_option( 'warning_on_exit' );

        printf(
            '<input type="checkbox" class="filled-in" id="chkWarningOnExit" name="%1$s[warning_on_exit]" value="1"%2$s /><label for="chkWarningOnExit"> </label>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            $val ? ' checked="checked"' : ''
        );
    }

    public static function render_triviaquiz_show_results() {
        $val = self::get_option( 'show_results' );

        $html = sprintf(
            '<select id="ddlTriviaShowResults" name="%1$s[show_results]" class="browser-default">',
            ARISTREAMQUIZ_SETTINGS_NAME
        );

        $options = array(
            '' => __( 'No', 'ari-stream-quiz' ),

            'immediately' => __( 'Immediately after user answer', 'ari-stream-quiz' ),

            'on_complete' => __( 'When quiz is completed', 'ari-stream-quiz' ),
        );

        foreach ( $options as $key => $label ) {
            $html .= sprintf(
                '<option value="%1$s"%3$s>%2$s</option>',
                $key,
                $label,
                $key == $val ? ' selected="selected"' : ''
            );
        }

        $html .= '</select>';

        echo $html;
    }

    public static function render_mailchimp_api_key() {
        $val = self::get_option( 'mailchimp_apikey' );

        printf(
            '<div><input type="text" id="tbxMailchimpKey" name="%1$s[mailchimp_apikey]" value="%2$s" /></div><div class="right-align"><a href="http://kb.mailchimp.com/integrations/api-integrations/about-api-keys" target="_blank">%3$s</a></div>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val ),
            __( 'Where get API key?', 'ari-stream-quiz' )
        );
    }

    public static function render_share_facebook_app_id() {
        $val = self::get_option( 'facebook_app_id' );

        printf(
            '<input type="text" id="tbxFacebookAppId" name="%1$s[facebook_app_id]" value="%2$s" />',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val )
        );
    }

    public static function render_share_share_buttons() {
        $val = self::get_option( 'share_buttons' );

        $html = '';

        $share_buttons = array(
            'facebook' => __( 'Facebook', 'ari-stream-quiz' ),
            'twitter' => __( 'Twitter', 'ari-stream-quiz' ),
            'gplus' => __( 'Google+', 'ari-stream-quiz' ),
        );

        foreach ( $share_buttons as $share_button => $label ) {
            $html .= sprintf(
                '<div class="left checkbox-group-item"><input type="checkbox" class="filled-in" id="chkShareButton_%2$s" name="%1$s[share_buttons][]" value="%2$s"%3$s /><label class="label" for="chkShareButton_%2$s">%4$s</label></div>',
                ARISTREAMQUIZ_SETTINGS_NAME,
                $share_button,
                in_array( $share_button, $val ) ? ' checked="checked"' : '',
                $label
            );
        }

        echo '<div class="clearfix">' . $html . '</div>';
    }

    public static function render_share_triviaquiz_title() {
        $val = self::get_option( 'share_trivia_title' );

        printf(
            '<input type="text" id="tbxShareTriviaTitle" name="%1$s[share_trivia_title]" value="%2$s" />',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val )
        );
    }

    public static function render_share_triviaquiz_facebook_title() {
        $val = self::get_option( 'share_trivia_facebook_title' );

        printf(
            '<input type="text" id="tbxShareTriviaFacebookTitle" name="%1$s[share_trivia_facebook_title]" value="%2$s" />',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val )
        );
    }

    public static function render_share_triviaquiz_facebook_content() {
        $val = self::get_option( 'share_trivia_facebook_content' );

        printf(
            '<input type="text" id="tbxShareTriviaFacebookContent" name="%1$s[share_trivia_facebook_content]" value="%2$s" />',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val )
        );
    }

    public static function render_share_triviaquiz_twitter_content() {
        $val = self::get_option( 'share_trivia_twitter_content' );

        printf(
            '<input type="text" id="tbxShareTriviaTwitterContent" name="%1$s[share_trivia_twitter_content]" value="%2$s" />',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val )
        );
    }

    public static function render_advanced_facebook_load_sdk() {
        $val = self::get_option( 'facebook_load_sdk' );

        printf(
            '<input type="checkbox" class="filled-in" id="chkFacebookLoadSDK" name="%1$s[facebook_load_sdk]" value="1"%2$s /><label for="chkFacebookLoadSDK"> </label>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            $val ? ' checked="checked"' : ''
        );
    }

    public static function render_advanced_lazy_load() {
        $val = self::get_option( 'lazy_load' );

        printf(
            '<input type="checkbox" class="filled-in" id="chkLazyLoad" name="%1$s[lazy_load]" value="1"%2$s /><label for="chkLazyLoad"> </label>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            $val ? ' checked="checked"' : ''
        );
    }

    public static function render_advanced_custom_styles() {
        $val = self::get_option( 'custom_styles' );

        printf(
            '<textarea id="tbxCustomStyles" name="%1$s[custom_styles]">%2$s</textarea>',
            ARISTREAMQUIZ_SETTINGS_NAME,
            esc_attr( $val )
        );
    }

    public static function sanitize( $input ) {
        $new_input = array();

        foreach ( self::$default_settings as $key => $val ) {
            $type = gettype( $val );

            if ( 'boolean' == $type && ! isset( $input[$key] ) ) {
                $new_input[$key] = false;
            } else if ( 'array' == $type && ! isset( $input[$key] ) ) {
                $new_input[$key] = array();
            } else if ( isset( $input[$key] ) ) {
                $input_val = $input[$key];
                $filtered_val = null;
                switch ( $type ) {
                    case 'boolean':
                        $filtered_val = (bool) $input_val;
                        break;

                    case 'integer':
                        $filtered_val = intval( $input_val, 10 );
                        break;

                    case 'double':
                        $filtered_val = floatval( $input_val );
                        break;

                    case 'array':
                        $filtered_val = $input_val;
                        break;

                    case 'string':
                        $filtered_val = trim( $input_val );
                        break;
                }

                if ( ! is_null( $filtered_val) ) {
                    $new_input[$key] = $filtered_val;
                }
            }
        }

        return $new_input;
    }
}