// RSS region helpers for resolving feeds, items, and nested values.

var registry = window.pulsePlayerRegionTypes;
var placeholderUtils = window.placeholderUtils || {};

function getDefaultStyle() {
  return {
    font_family: 'Arial',
    font_size: 32,
    font_color: '#000000'
  };
}

function normalizeRenderableValue(value) {
  if (value && typeof value === 'object') {
    if (value.value !== undefined) {
      return value.value;
    }
    if (value.text !== undefined) {
      return value.text;
    }
    if (value.html !== undefined) {
      return value.html;
    }
    try {
      return JSON.stringify(value);
    } catch (_error) {
      return '';
    }
  }
  return value;
}

function getRssFeedById(feedId) {
  var feeds = Array.isArray(initialData && initialData.rssFeeds) ? initialData.rssFeeds : [];
  var normalizedId = Number(feedId || 0);
  return feeds.find(function (feed) {
    return Number(feed.id) === normalizedId;
  }) || null;
}

function getRssFeedItem(feedId, itemNumber) {
  var feed = getRssFeedById(feedId);
  var items = feed && Array.isArray(feed.items) ? feed.items : [];
  var parsedItemNumber = Math.max(1, Number(itemNumber || 1));
  var index = Number.isFinite(parsedItemNumber) && parsedItemNumber > 0 ? parsedItemNumber - 1 : 0;
  return items[index] || null;
}

function resolveRssPath(value, path) {
  var current = value;
  if (!path) {
    return current;
  }

  String(path).split('.').forEach(function (segment) {
    if (current === undefined || current === null) {
      current = '';
      return;
    }
    current = current[segment];
  });

  return current === undefined || current === null ? '' : current;
}

function substituteRssVariables(html, item, feedId) {
  var source = String(html || '');
  return source.replace(/\{\{\s*([^{}]+?)\s*\}\}/g, function (_match, expression) {
    if (!item || typeof item !== 'object') {
      return '';
    }
    if (typeof placeholderUtils.resolvePlaceholderExpression !== 'function' || typeof placeholderUtils.formatPlaceholderValue !== 'function') {
      return '';
    }
    var resolved = placeholderUtils.resolvePlaceholderExpression(item, expression);
    if (typeof placeholderUtils.isImagePlaceholderExpression === 'function' && placeholderUtils.isImagePlaceholderExpression(expression)) {
      var imageSource = placeholderUtils.formatPlaceholderValue(resolved);
      var feed = getRssFeedById(feedId);
      imageSource = feed && feed.imageCache && feed.imageCache[imageSource] ? feed.imageCache[imageSource] : imageSource;
      if (!/^(?:https?:\/\/|\/media\/|\/assets\/|\/[^/])/i.test(imageSource)) {
        return '';
      }
      var imageConfig = typeof placeholderUtils.getImagePlaceholderConfig === 'function' ? placeholderUtils.getImagePlaceholderConfig(expression) : {};
      var hasImageBounds = imageConfig.width && imageConfig.height;
      var imageStyle = hasImageBounds
        ? 'display:block;width:100%;height:100%;object-fit:contain;'
        : 'display:block;width:auto;height:auto;' + (imageConfig.width ? 'max-width:' + imageConfig.width + 'px;' : '') + (imageConfig.height ? 'max-height:' + imageConfig.height + 'px;' : '');
      var image = '<img src="' + escapeHtml(imageSource) + '" alt="" style="' + imageStyle + '" />';
      return hasImageBounds
        ? '<span style="display:inline-flex;align-items:center;justify-content:center;box-sizing:border-box;width:' + imageConfig.width + 'px;height:' + imageConfig.height + 'px;">' + image + '</span>'
        : image;
    }
    return escapeHtml(placeholderUtils.formatPlaceholderValue(resolved));
  });
}

function renderRssRegion(region, regionContent) {
  var content = normalizeRenderableValue(regionContent && regionContent.value !== undefined ? regionContent.value : '');
  var feedId = regionContent && regionContent.feed_id !== undefined ? regionContent.feed_id : null;
  var itemNumber = regionContent && regionContent.item_number !== undefined ? regionContent.item_number : 1;
  var defaultStyle = getDefaultStyle();
  var fontFamily = sanitizeFontFamily(regionContent.font_family || region.fontFamily || defaultStyle.font_family);
  var fontSize = sanitizeFontSize(regionContent.font_size || region.fontSize || defaultStyle.font_size);
  var fontColor = sanitizeTextColor(regionContent.font_color || region.fontColor || defaultStyle.font_color);
  var item = getRssFeedItem(feedId, itemNumber);
  var hasFeed = String(feedId === undefined || feedId === null ? '' : feedId).trim() !== '';
  var body = hasFeed ? (item ? substituteRssVariables(content, item, feedId) : '') : content;
  var contentStyle = 'width:' + region.pixelWidth + 'px;height:' + region.pixelHeight + 'px;transform:scale(' + region.canvasScale + ');transform-origin:top left;' + (fontFamily ? 'font-family:' + escapeHtml(fontFamily) + ';' : '') + 'font-size:' + fontSize + 'px;color:' + escapeHtml(fontColor) + ';';
  if (!body) {
    return '';
  }
  var renderedBody = renderEditorJsContent(body);
  return renderedBody ? '<div class="template-region rss" style="' + region.baseStyle + '"><div class="template-region-text-scale" style="' + contentStyle + '">' + renderedBody + '</div></div>' : '';
}

registry.register('rss', {
  getDefaultStyle: getDefaultStyle,
  renderRegion: renderRssRegion
});