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<?php 

/**
 * ProcessWire General site settings module
 *
 * Allows to set global site settings 
 *
 * by Piotr Markiewicz (pmarki)
 *
 * ProcessWire 2.8.x (development), Copyright 2016 by Ryan Cramer
 * https://processwire.com
 *
 *
 */

class ProcessGeneralSettings extends Process implements Module, ConfigurableModule {

  public static function getModuleInfo() {
    return array(
      'title' => __('General site settings', __FILE__),
      'summary' => __('Module that stores global site settings', __FILE__),
      'version' => 121,
      'permanent' => false, 
      'autoload' => true,
      'icon' => 'sliders', 
      'page' => array(
        'name' => 'general_settings',
        'parent' => 'setup',
        'title' => 'General settings',
        ),
      );
  }

  protected static $defaults = array(
    'global' => 'g_settings',
    'settings' => '{"0":{"api":"title","label":"Your site title","type":"Text","width":"100","description":"","select":""}}',
  );


  public function init() {
    //load styles for backend
    if ($this->wire('user')->isLoggedin() && $this->input->get('name') == __CLASS__) {
      $root = $this->config->urls->siteModules . __CLASS__;
          $this->config->styles->prepend($root . '/' . 'SettingsStyles.css');
          $this->config->scripts->add($root . '/' . 'SettingsJS.js');
        }
    //register wire 'global'
    if (isset($this->data['global'])) {
      $this->wire($this->data['global'], $this);
    }

    if (!isset($this->data['settings'])) {
      parent::init();
      return;
    }

    //set api as key with value as value
    //it makes it callable $settings->key
    $langData = array();
    $data = json_decode($this->data['settings'], true);
    foreach ($data as $key => $field) {
      if (!isset($field['api'])) continue;

      $value = (isset($field['value']) ? $field['value'] : '');
      if ($field['type'] == 'Textarea') {
        $value = nl2br($value);
      }

      if ($this->user->language) {
        //if api ends with language name: site_name_polish, add its value to langData array
        //so if user language is polish calling site_name will return its polish value
        if (strpos($field['api'], '_'.$this->user->language->name) !== false) {
          //$api without language suffix - site_title
          $api = str_replace('_'.$this->user->language->name, '', $field['api']);
          foreach ($data as $k => $f) {
            if ($f['api'] === $api) {
              $langData[$api] = $field['value'];
            }
          }
        }
      }
      $this->set($field['api'], $value);
    }
    foreach ($langData as $key => $value) {
      $this->set($key, $value);
    }
    parent::init();
  }

  public function ___execute() {
    if ($this->input->post('submit_save')) {
      return $this->renderForm($this->saveValues());
      //wire('session')->redirect(wire('page')->url);
    } else {
      return $this->renderForm();
    }
  }

  /**
   * Render all settings with basic markup
   * 
   * @return string markup
   *
   */
  public function render() {
    $out = '<p>';
    foreach (json_decode($this->data['settings'], true) as $key => $field) {
      if (isset($field['api']) && $field['type'] != 'Fieldset') {
        $v = (isset($field['value'])) ? $field['value'] : '';
        $out .= $this->wire('sanitizer')->entities($field['label'])
          . ' ('. $field['api'] . ') => ' 
          . nl2br($this->wire('sanitizer')->entities($v)) . '<br>';
      }
    }
    return $out .'</p>';
  }

  /**
   * Render form for admin page
   * 
   * @return string form markup
   *
   */
  protected function renderForm($settings=null) {
    //bd($this->data);
    if (!isset($this->data['settings'])) {
      return 'Create settings in module configuration first.';
    }

    $data = $this->data;

    $attrs = json_decode( $settings ?:$data['settings'], true);
    if ($attrs === null) {
      return 'Error decoding settings data.';
    }

    $form = $this->modules->get('InputfieldForm'); 
    $form->attr('id', 'SettingsModule');
    $form->attr('action', $this->wire('page')->url );

        $parent = $form;
    foreach ($attrs as $fset) {
          $field = $this->modules->get('Inputfield'.$fset['type']);
          $value = (isset($fset['value']) ? $fset['value'] : '');

          //------- NEW --------
          if($fset['type'] == 'FieldsetClose') {
        $parent = $form;
        continue;
      }
      //------- END NEW --------

          if (!$field) {
            $this->message('Unable to find field type ' .$fset['type']);
            continue;
          }
          //set attrbs for all type of fields
      $field->label = $fset['label'];
      $field->columnWidth = (intval($fset['width']) >=10) ? $fset['width'] : 100;
      $field->description = $fset['description'];

      //------- NEW --------

      // Placeholder
      $field->placeholder = isset($fset['placeholder']) ? $fset['placeholder'] : '';

      // Collapsed
      if(isset($fset['collapsed']) && $fset['collapsed'] != 'Default') {
        if($fset['collapsed'] == 'collapsedNever') $field->collapsed = Inputfield::collapsedNever;
        if($fset['collapsed'] == 'collapsedBlank') $field->collapsed = Inputfield::collapsedBlank;
        if($fset['collapsed'] == 'collapsedYes') $field->collapsed = Inputfield::collapsedYes;
      }

      // Markup
          if ($fset['type'] == 'Markup') {
        $field->markupText = '<p>' . $fset['description'] . '</p>';
        $field->description = '';
          }

          //------- END NEW --------

          if ($fset['type'] == 'Checkbox') {
        $field->uncheckedValue = '0';
            if($value === '1') {
              $field->setAttribute('checked', 'checked'); 
            }
          }
          if ($fset['type'] == 'URL') {
        $field->set('noRelative', 1);
      }
      if ($fset['type'] == 'Select' || $fset['type'] == 'Radios') {
        foreach (explode(',', trim($fset['select'], ',')) as $label) {
          //value, label, attr
          $v = $this->wire('sanitizer')->name($label);
          if ($value == $v) {
            $field->addOption($v, $label, array('selected' => 1));
          } else {
            $field->addOption($v, $label);
          }
        }
      }
      if ($fset['type'] == 'Integer') {
        $field->setAttribute('type', 'number');
      }

      //fieldset or normal field
      if ($fset['type'] == 'Fieldset') {
        $field->addClass('fset_red');
        $parent = $field;
        $form->append($field);
      } else {
            $field->attr('name', $fset['api']);
            $field->attr('value', $value); 
            $parent->append($field);
          }

    }

    // $f = $this->modules->get('InputfieldTextarea'); 
    // $f->label = __('Export/Backup These Settings'); 
    // $f->attr('name+id', 'export_settings'); 
    // $f->attr('value', $this->data['settings']); 
    // $f->collapsed = Inputfield::collapsedYes;
    // $form->add($f);

    // $f = $this->modules->get('InputfieldTextarea'); 
    // $f->label = __('Import/Restore Settings'); 
    // $f->attr('name', 'import_settings'); 
    // $f->attr('value', isset($this->data['import_settings']) ? $this->data['import_settings'] : '' );
    // $f->collapsed = Inputfield::collapsedYes;
    // $form->add($f);

    $f = $this->modules->get('InputfieldSubmit'); 
    $f->attr('name', 'submit_save'); 
    $f->attr('value', $this->_('Save')); 
    $f->addClass('head_button_clone');
    $f->icon = 'save';

    $form->add($f);

    return $form->render();
  }

  /**
   * Save values provided by user to module config data
   * 
   */
  protected function saveValues() {

    // if($this->wire('input')->post->import_settings != '') {
    //  $this->message('Site settings restored');
    //  return $this->wire('input')->post->import_settings;
    // }

    $old = $this->data;
    $data = json_decode($old['settings'], true);
    $new = array();
    foreach ($data as $key => $field) {
      $new[$key] = $field;
      $new[$key]['value'] = $this->wire('input')->{$field['api']};
    }
    $old['settings'] = json_encode($new);
    wire('modules')->saveModuleConfigData($this, $old); 
    $this->message('Site settings saved');  
    return $old['settings'];
  }

  static public function getModuleConfigInputfields(array $data) {
    $data = array_merge(self::$defaults, $data);
    $options = array();
    $values = array();
    $json = (isset( $data['settings'] )) ? json_decode($data['settings'], true) : '';

    // if(isset($data['settings_import']) && $data['settings_import'] != '') {
    //  $json = json_decode($data['settings_import'], true);
    //  $data['settings'] = $data['settings_import'];
    //  $data['settings_import'] = '';
    // }

    foreach ($json as $key => $value) {
      if ($value['type'] == 'Fieldset' || $value['type'] == 'FieldsetClose') {
        $options[$value['api']] ='-- '. $value['label'] . ' -- ' . $value['width'] . '%';
      } else {
        $options[$value['api']] = $value['label'] . ' ('. $value['api'] .') - ' . $value['width'] . '%';
      }
      $values[] = $value['api'];
    }

    $order = array();
        $fields = new InputfieldWrapper();
        $modules = wire('modules');

        //------------------------------------------
        $field = $modules->get("InputfieldMarkup");
        $field->label = __("Help", __FILE__);
        $help = ('<b>API variable</b> - Any combination of letters (a-z), numbers (0-9) and underscores (no spaces). 
            You can call it in template files to output a value ($settings->site_name will return "My site").
            <br>IMPORTANT: take care to not overload ProcessWire properties ($page, $user, etc.). It must be unique across all settings.<br>
            <b>Label</b> - descriptive name for a backend user<br>
            <b>Description</b> - longer explanation shown as notes in ProcessWire backend<br>
            <b>Width</b> - field width in %, set between 10 and 100<br>
            <b>Options for select or radios</b> - this will be used as names and labels, the best one word only');
        $field->entityEncodeText = false;
        $field->entityEncodeLabel = false;
        $field->attr('value', $help); 
        $field->collapsed = Inputfield::collapsedYes;
        $fields->append($field);

        //------------------------------------------
        $field = $modules->get("InputfieldText");
        $field->attr('name', 'global');
        $field->label = __("Global name", __FILE__);
        $field->attr('value', $data['global']); 
        $field->description = __('Use to call settings property in frontend ($settings->property).', __FILE__);
        $field->notes = __("After changing make sure to change it in your template files.", __FILE__);
        $field->collapsed = Inputfield::collapsedYes;
        $fields->append($field);

        //------------------------------------------
        $field = wire('modules')->get("InputfieldTextarea");
        $field->attr('name', 'settings');
        $field->attr('id', 'settings');
        $field->label = __("Json data", __FILE__);
        $field->attr('value', $data['settings']); 
        $field->columnWidth = 34;
        $field->collapsed = Inputfield::collapsedYes;
        $fields->append($field);

        //------------------------------------------
        // $field = wire('modules')->get("InputfieldTextarea");
        // $field->attr('name', 'settings_import');
        // $field->attr('id', 'settings_import');
        // $field->label = __("Import Settings Config", __FILE__);
        // $field->attr('value', $data['settings_import']); 
        // $field->collapsed = Inputfield::collapsedYes;
        // $fields->append($field);

        //------------------------------------------
      $field = $modules->get("InputfieldAsmSelect");
        $field->attr('name', 'order');
        $field->attr('id', 'ASMOrder');
        $field->label = __("Settings", __FILE__);
        $field->addOptions($options);
        $field->attr('value', $values); 
        $fields->append($field);


        return $fields;
    }
}