<?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_TRIVIAQUIZ_SECTION', 'ari_stream_quiz_triviaquiz_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',

        'warning_on_exit' => false,
    );

    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_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
        );

        // 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
        );

        // Advanced parameters
        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_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_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_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;
    }
}