<?php

namespace MailPoet\Form\Util;

use MailPoet\DI\ContainerWrapper;
use MailPoet\Features\FeaturesController;
use MailPoetVendor\Sabberworm\CSS\Parser as CSSParser;

class Styles {
  private $defaultStyles = <<<EOL
/* form */
.mailpoet_form {

}

/* paragraphs (label + input) */
.mailpoet_paragraph {
  line-height:20px;
}

/* labels */
.mailpoet_segment_label,
.mailpoet_text_label,
.mailpoet_textarea_label,
.mailpoet_select_label,
.mailpoet_radio_label,
.mailpoet_checkbox_label,
.mailpoet_list_label,
.mailpoet_date_label {
  display:block;
  [LABELS_FONT_WEIGHT_RULE]
}

/* inputs */
.mailpoet_text,
.mailpoet_textarea,
.mailpoet_select,
.mailpoet_date_month,
.mailpoet_date_day,
.mailpoet_date_year,
.mailpoet_date {
  display:block;
}

.mailpoet_text,
.mailpoet_textarea {
  [TEXT_INPUTS_WIDTH_RULE]
}

.mailpoet_checkbox {
}

.mailpoet_submit input {
}

.mailpoet_divider {
}

.mailpoet_message {
}

.mailpoet_validate_success {
  font-weight: 600;
  color:#468847;
}

.mailpoet_validate_error {
  color:#B94A48;
}

.mailpoet_form_loading {
  width: 30px;
  text-align: center;
  line-height: normal;
}

.mailpoet_form_loading > span {
  width: 5px;
  height: 5px;
  background-color: #5b5b5b;
}
EOL;

  /** @var FeaturesController */
  private $featuresController;

  /**
   * @param FeaturesController $featuresController
   */
  public function __construct(
    FeaturesController $featuresController = null
  ) {
    if ($featuresController === null) {
      $featuresController = ContainerWrapper::getInstance()->get(FeaturesController::class);
    }
    $this->featuresController = $featuresController;
  }

  public function getDefaultStyles() {
    if ($this->featuresController->isSupported(FeaturesController::NEW_FORM_EDITOR)) {
      $textInputWidth = 'width: 100%;';
      $labelFontWeight = 'font-weight: normal;';
    } else {
      $textInputWidth = 'width: 200px;';
      $labelFontWeight = 'font-weight: bold;';
    }
    $styles = str_replace('[TEXT_INPUTS_WIDTH_RULE]', $textInputWidth, $this->defaultStyles);
    $styles = str_replace('[LABELS_FONT_WEIGHT_RULE]', $labelFontWeight, $styles);
    return $styles;
  }

  public function render($stylesheet, $prefix = '') {
    if (!$stylesheet) return;
    $styles = new CSSParser($stylesheet);
    $styles = $styles->parse();
    $formattedStyles = [];
    foreach ($styles->getAllDeclarationBlocks() as $styleDeclaration) {
      $selectors = array_map(function($selector) use ($prefix) {
        return sprintf('%s %s', $prefix, $selector->__toString());
      }, $styleDeclaration->getSelectors());
      $selectors = implode(', ', $selectors);
      $rules = array_map(function($rule) {
        return $rule->__toString();
      }, $styleDeclaration->getRules());
      $rules = sprintf('{ %s }', implode(' ', $rules));
      $formattedStyles[] = sprintf('%s %s', $selectors, $rules);
    }
    return implode(PHP_EOL, $formattedStyles);
  }
}