243 lines
7.5 KiB
PHP
243 lines
7.5 KiB
PHP
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<?php
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class Post_Formatter {
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private $api;
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private $max_length = 300;
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public function __construct($access_token, $did) {
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$this->api = new Bluesky_API($access_token, $did);
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}
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public function format_and_post($post) {
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$content = $this->get_formatted_content($post);
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$post_data = array(
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'$type' => 'app.bsky.feed.post',
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'text' => $content,
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'createdAt' => gmdate('c', strtotime($post->post_date_gmt)),
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'langs' => array('en')
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);
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// Add facets for the URL
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$post_data['facets'] = $this->parse_facets($post);
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// Handle image embed separately from text content
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if (has_post_thumbnail($post->ID)) {
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$image_data = $this->handle_featured_image($post->ID);
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if (!empty($image_data) && !isset($image_data['error'])) {
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$post_data['embed'] = $image_data;
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}
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}
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return $this->api->create_post($post_data);
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}
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private function get_formatted_content($post) {
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$format = get_option('bluesky_post_format', 'image-title-excerpt-link');
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$include_title = get_option('bluesky_include_title', true);
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// Get individual components
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$title = $include_title ? $post->post_title : '';
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$excerpt = $this->get_excerpt($post);
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$url = wp_get_shortlink($post->ID);
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// Start building content with explicit line breaks
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$content = '';
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// Add title with line break if it exists
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if (!empty($title)) {
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$content .= $title . "\n\n";
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}
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// Add excerpt if it exists
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if (!empty($excerpt)) {
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$content .= $excerpt . "\n\n"; // Add double line break after excerpt
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}
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// Add URL on its own line
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if (!empty($url)) {
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$content .= $url; // URL starts on new line due to previous \n\n
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}
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return $content;
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}
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private function get_excerpt($post) {
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$text = wp_strip_all_tags($post->post_excerpt);
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if (empty($text)) {
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$text = wp_strip_all_tags($post->post_content);
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}
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$url = wp_get_shortlink($post->ID);
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$include_title = get_option('bluesky_include_title', true);
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// Calculate available length accounting for spacing and new lines
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$available_length = $this->max_length;
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$available_length -= strlen($url);
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$available_length -= 2; // Account for \n\n after excerpt
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if ($include_title) {
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$available_length -= strlen($post->post_title);
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$available_length -= 2; // Account for \n\n after title
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}
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if (mb_strlen($text) > $available_length) {
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$text = mb_substr($text, 0, $available_length - 3) . '...';
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}
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return $text;
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}
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private function parse_facets($post) {
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$facets = array();
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$content = $this->get_formatted_content($post);
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// Add link facet for the post URL
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$url = wp_get_shortlink($post->ID);
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$text_bytes = mb_convert_encoding($content, 'UTF-8');
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$url_position = mb_strrpos($text_bytes, $url);
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if ($url_position !== false) {
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$facets[] = array(
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'index' => array(
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'byteStart' => $url_position,
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'byteEnd' => $url_position + strlen($url),
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),
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'features' => array(
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array(
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'$type' => 'app.bsky.richtext.facet#link',
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'uri' => $url,
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),
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),
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);
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}
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return $facets;
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}
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private function handle_featured_image($post_id) {
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$image_id = get_post_thumbnail_id($post_id);
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$image_path = get_attached_file($image_id);
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if (!$image_path) {
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return array('error' => 'Image file not found');
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}
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$mime_type = get_post_mime_type($image_id);
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// Get image data
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$image_data = file_get_contents($image_path);
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if ($image_data === false) {
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return array('error' => 'Failed to read image file');
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}
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// Check file size (1MB limit for Bluesky)
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if (strlen($image_data) > 1000000) {
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// If image is too large, attempt to resize it
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$resized = $this->resize_image($image_path);
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if ($resized) {
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$image_data = file_get_contents($resized);
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unlink($resized); // Clean up temporary file
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} else {
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return array('error' => 'Image file size exceeds 1MB limit and resize failed');
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}
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}
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// Upload image blob
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$response = $this->api->upload_blob($image_path, $mime_type);
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if (isset($response['error'])) {
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return $response;
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}
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// Get the alt text
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$alt_text = get_post_meta($image_id, '_wp_attachment_image_alt', true) ?: '';
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return array(
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'$type' => 'app.bsky.embed.images',
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'images' => array(
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array(
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'alt' => $alt_text,
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'image' => $response['blob'],
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),
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),
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);
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}
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private function resize_image($image_path) {
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// Only proceed if GD is available
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if (!function_exists('imagecreatefrompng')) {
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return false;
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}
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$mime_type = mime_content_type($image_path);
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list($width, $height) = getimagesize($image_path);
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// Calculate new dimensions while maintaining aspect ratio
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$max_dimension = 1000; // Reasonable size that should result in < 1MB file
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if ($width > $height) {
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$new_width = $max_dimension;
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$new_height = floor($height * ($max_dimension / $width));
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} else {
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$new_height = $max_dimension;
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$new_width = floor($width * ($max_dimension / $height));
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}
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// Create new image
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$new_image = imagecreatetruecolor($new_width, $new_height);
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// Handle different image types
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switch ($mime_type) {
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case 'image/jpeg':
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$source = imagecreatefromjpeg($image_path);
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break;
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case 'image/png':
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$source = imagecreatefrompng($image_path);
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// Preserve transparency
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imagealphablending($new_image, false);
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imagesavealpha($new_image, true);
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break;
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case 'image/gif':
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$source = imagecreatefromgif($image_path);
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break;
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default:
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return false;
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}
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if (!$source) {
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return false;
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}
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// Resize
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imagecopyresampled(
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$new_image,
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$source,
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0, 0, 0, 0,
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$new_width,
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$new_height,
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$width,
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$height
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);
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// Create temporary file
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$temp_file = tempnam(sys_get_temp_dir(), 'bluesky_img_');
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// Save resized image
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switch ($mime_type) {
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case 'image/jpeg':
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imagejpeg($new_image, $temp_file, 85);
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break;
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case 'image/png':
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imagepng($new_image, $temp_file, 8);
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break;
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case 'image/gif':
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imagegif($new_image, $temp_file);
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break;
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}
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// Clean up
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imagedestroy($source);
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imagedestroy($new_image);
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return $temp_file;
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}
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}
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