<?php

use ScssPhp\ScssPhp\OutputStyle;

class Wp_Scss_Settings {
  /**
   * Holds the values to be used in the fields callbacks
   */
  private $options;

  /**
   * Start up
   */
  public function __construct() {
    add_action( 'admin_menu', array( $this, 'add_plugin_page' ) );
    add_action( 'admin_init', array( $this, 'page_init' ) );
  }

  /**
   * Add options page
   */
  public function add_plugin_page() {
    // This page will be under "Settings"
    add_options_page(
      'Settings Admin',
      'WP-SCSS',
      'manage_options',
      'wpscss_options',
      array( $this, 'create_admin_page' )
    );
  }

  /**
   * Options page callback
   */
  public function create_admin_page() {
    // Set class property
    $this->options = get_option( 'wpscss_options' );
    ?>
    <div class="wrap">
        <h2>WP-SCSS Settings</h2>
        <p>
          <span class="version">Version <em><?php echo wp_kses(get_option('wpscss_version'), array()); ?></em>
          <br/>
          <span class="author">By: <a href="http://connectthink.com" target="_blank">Connect Think</a></span>
          <br/>
          <span class="repo">Help & Issues: <a href="https://github.com/ConnectThink/WP-SCSS" target="_blank">Github</a></span>
        </p>
        <form method="post" action="options.php">
        <?php
            // This prints out all hidden setting fields
            settings_fields( 'wpscss_options_group' );
            do_settings_sections( 'wpscss_options' );
            submit_button();
        ?>
        </form>
    </div>
    <?php
  }

  /**
   * Register and add settings
   */
  public function page_init() {
    register_setting(
      'wpscss_options_group',    // Option group
      'wpscss_options',          // Option name
      array( $this, 'sanitize' ) // Sanitize
    );

    // Paths to Directories
    add_settings_section(
      'wpscss_paths_section',             // ID
      'Configure Paths',                  // Title
      array( $this, 'print_paths_info' ), // Callback
      'wpscss_options'                    // Page
    );

    $base_folder_options = array(
      'Uploads Directory' => 'Uploads Directory',
      'WP-SCSS Plugin' => 'WP-SCSS Plugin'
    );
    if(get_stylesheet_directory() === get_template_directory()){
      $base_folder_options['Current Theme'] = 'Current Theme';
    }else{
      $base_folder_options['Parent Theme'] = 'Parent Theme';
      $base_folder_options['Child Theme'] = 'Child Theme';
    }

    add_settings_field(
      'wpscss_base_folder',                    // ID
      'Base Location',                         // Title
      array( $this, 'input_select_callback' ), // Callback
      'wpscss_options',                        // Page
      'wpscss_paths_section',                  // Section
      array(                                   // args
        'name' => 'base_compiling_folder',
        'type' => apply_filters( 'wp_scss_base_compiling_modes',
          $base_folder_options
        )
      )
    );

    // #TODO see if this is ever warrented
    // add_settings_field(
    //   'Use Absolute Path',                       // ID
    //   'Use Absolute Path',                       // Title
    //   array( $this, 'input_checkbox_callback' ), // Callback
    //   'wpscss_options',                          // Page
    //   'wpscss_paths_section',                    // Section
    //   array(                                     // args
    //     'name' => 'use_absolute_paths'
    //   )
    // );


    add_settings_field(
      'wpscss_scss_dir',                     // ID
      'SCSS Location',                       // Title
      array( $this, 'input_text_callback' ), // Callback
      'wpscss_options',                      // Page
      'wpscss_paths_section',                // Section
      array(                                 // args
        'name' => 'scss_dir',
      )
    );

    add_settings_field(
      'wpscss_css_dir',                       // ID
      'CSS Location',                         // Title
      array( $this, 'input_text_callback' ),  // Callback
      'wpscss_options',                       // Page
      'wpscss_paths_section',                 // Section
      array(                                  // args
        'name' => 'css_dir',
      )
    );

    add_settings_field(
      'wpscss_cache_dir',                     // ID
      'Cache Location',                       // Title
      array( $this, 'input_text_callback' ),  // Callback
      'wpscss_options',                       // Page
      'wpscss_paths_section',                 // Section
      array(                                  // args
        'name' => 'cache_dir',
      )
    );

    // Compiling Options
    add_settings_section(
      'wpscss_compile_section',             // ID
      'Compiling Options',                  // Title
      array( $this, 'print_compile_info' ), // Callback
      'wpscss_options'                      // Page
    );

    add_settings_field(
      'Compiling Mode',                        // ID
      'Compiling Mode',                        // Title
      array( $this, 'input_select_callback' ), // Callback
      'wpscss_options',                        // Page
      'wpscss_compile_section',                // Section
      array(                                   // args
        'name' => 'compiling_options',
        'type' => apply_filters( 'wp_scss_compiling_modes',
          array(
            OutputStyle::COMPRESSED => ucfirst(OutputStyle::COMPRESSED),
            OutputStyle::EXPANDED   => ucfirst(OutputStyle::EXPANDED),
          )
        )
      )
    );

    add_settings_field(
      'Source Map Mode',                       // ID
      'Source Map Mode',                       // Title
      array( $this, 'input_select_callback' ), // Callback
      'wpscss_options',                        // Page
      'wpscss_compile_section',                // Section
      array(                                   // args
        'name' => 'sourcemap_options',
        'type' => apply_filters( 'wp_scss_sourcemap_modes',
          array(
            'SOURCE_MAP_NONE'   => 'None',
            'SOURCE_MAP_INLINE' => 'Inline',
            'SOURCE_MAP_FILE' => 'File'
          )
        )
      )
    );

    add_settings_field(
      'Error Display',                         // ID
      'Error Display',                         // Title
      array( $this, 'input_select_callback' ), // Callback
      'wpscss_options',                        // Page
      'wpscss_compile_section',                // Section
      array(                                   // args
        'name' => 'errors',
        'type' => apply_filters( 'wp_scss_error_diplay',
          array(
            'show'           => 'Show in Header',
            'show-logged-in' => 'Show to Logged In Users',
            'hide'           => 'Print to Log',
          )
        )
      )
    );

    // Enqueuing Options
    add_settings_section(
      'wpscss_enqueue_section',             // ID
      'Enqueuing Options',                  // Title
      array( $this, 'print_enqueue_info' ), // Callback
      'wpscss_options'                      // Page
    );

    add_settings_field(
      'Enqueue Stylesheets',                     // ID
      'Enqueue Stylesheets',                     // Title
      array( $this, 'input_checkbox_callback' ), // Callback
      'wpscss_options',                          // Page
      'wpscss_enqueue_section',                  // Section
      array(                                     // args
        'name' => 'enqueue'
      )
    );

    //  Development options
    add_settings_section(
      'wpscss_development_section', // ID
      'Development Settings',       // Title
      '',                         // Callback
      'wpscss_options'            // Page
    );

    add_settings_field(
      'wpscss_scss_always_recompile',            // ID
      'Always Recompile',                        // Title
      array( $this, 'input_checkbox_callback' ), // Callback
      'wpscss_options',                          // Page
      'wpscss_development_section',                // Section
      array(                                     // args
        'name' => 'always_recompile',
      )
    );
  }

  /**
   * Sanitize each setting field as needed
   *
   * @param array $input Contains all settings fields as array keys
   */
  public function sanitize( $input ) {
    foreach( ['scss_dir', 'css_dir', 'cache_dir'] as $dir ){
      if( !empty( $input[$dir] ) ) {
        $input[$dir] = sanitize_text_field( $input[$dir] );

        // Add a trailing slash if not already present
        if(substr($input[$dir], -1) != '/'){
          $input[$dir] .= '/';
        }
      }
    }

    return $input;
  }

  /**
   * Print the Section text
   */
  public function print_paths_info() {
    print 'Location of your SCSS, CSS, and cache directories relative to the <b>Base Location</b> setting.  Values must start with <code>/</code> ' .
      '(e.g. <code>/custom-scss/</code> and <code>/custom-css/</code>).' .
      '</br>Exceptionally, the cache location defaults to the <code>plugins/wp-scss/cache</code> directory if left empty.'.
      '</br><b>Caution</b> updating some themes or plugins will delete the custom WP-SCSS Base Location when nested.';
  }
  public function print_compile_info() {
    print 'Choose how you would like SCSS and source maps to be compiled and how you would like the plugin to handle errors';
  }
  public function print_enqueue_info() {
    print 'WP-SCSS can enqueue your css stylesheets in the header automatically.';
  }

  /**
   * Text Fields' Callback
   */
  public function input_text_callback( $args ) {
    printf(
      '<input type="text" id="%s" name="wpscss_options[%s]" value="%s" />',
      esc_attr( $args['name'] ), esc_attr( $args['name'] ), esc_attr( isset($this->options[$args['name']]) ? $this->options[$args['name']] : '' )
    );
  }

  /**
   * Select Boxes' Callbacks
   */
  public function input_select_callback( $args ) {
    $this->options = get_option( 'wpscss_options' );

    $html = sprintf( '<select id="%s" name="wpscss_options[%s]">', esc_attr( $args['name'] ), esc_attr( $args['name'] ) );
    foreach( $args['type'] as $value => $title ) {
      $html .= '<option value="' . esc_attr( $value ) . '"' . selected( isset($this->options[esc_attr( $args['name'] )]) ? $this->options[esc_attr( $args['name'] )] : '', esc_attr( $value ), false) . '>' . esc_attr( $title ) . '</option>';
    }
    $html .= '</select>';

    echo wp_kses($html, array( 'select' => array('id' => array(), 'name' => array()), 'option' => array('value' => array(), 'selected' => array())));
  }

  /**
   * Checkboxes' Callbacks
   */
  public function input_checkbox_callback( $args ) {
    $this->options = get_option( 'wpscss_options' );
    $html = "";
    $option_name = esc_attr( $args['name']);
    if($option_name == 'always_recompile' && defined('WP_SCSS_ALWAYS_RECOMPILE') && WP_SCSS_ALWAYS_RECOMPILE){
      $html .= '<input type="checkbox" id="' . $option_name . '" name="wpscss_options[' . $option_name . ']" value="1"' . checked( 1, isset( $this->options[$option_name] ) ? $this->options[$option_name] : 1, false ) . ' disabled=disabled/>';
      $html .= '<label for="' . $option_name . '">Currently overwritten by constant <code>WP_SCSS_ALWAYS_RECOMPILE</code></label>';
    }else{
      $html .= '<input type="checkbox" id="' . $option_name . '" name="wpscss_options[' . $option_name . ']" value="1"' . checked( 1, isset( $this->options[$option_name] ) ? $this->options[$option_name] : 0, false ) . '/>';
      $html .= '<label for="' . $option_name . '"></label>';
    }

    echo wp_kses($html, array('input' => array('type' => array(), 'id' => array(), 'name' => array(), 'value' => array(), 'checked' => array(), 'disabled' => array()), 'label' => array('for' => array()) ));
  }
}
