<?php

/**

 * WordPress Administration Media API.

 *

 * @package WordPress

 * @subpackage Administration

 */

/**

 * Defines the default media upload tabs.

 *

 * @since 2.5.0

 *

 * @return string[] Default tabs.

 */

function media_upload_tabs() {

	$_default_tabs = array(

		'type'     => __( 'From Computer' ), // Handler action suffix => tab text.

		'type_url' => __( 'From URL' ),

		'gallery'  => __( 'Gallery' ),

		'library'  => __( 'Media Library' ),

	);

	/**

	 * Filters the available tabs in the legacy (pre-3.5.0) media popup.

	 *

	 * @since 2.5.0

	 *

	 * @param string[] $_default_tabs An array of media tabs.

	 */

	return apply_filters( 'media_upload_tabs', $_default_tabs );

}

/**

 * Adds the gallery tab back to the tabs array if post has image attachments.

 *

 * @since 2.5.0

 *

 * @global wpdb $wpdb WordPress database abstraction object.

 *

 * @param array $tabs

 * @return array $tabs with gallery if post has image attachment

 */

function update_gallery_tab( $tabs ) {

	global $wpdb;

	if ( ! isset( $_REQUEST['post_id'] ) ) {

		unset( $tabs['gallery'] );

		return $tabs;

	}

	$post_id = (int) $_REQUEST['post_id'];

	if ( $post_id ) {

		$attachments = (int) $wpdb->get_var( $wpdb->prepare( "SELECT count(*) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' AND post_parent = %d", $post_id ) );

	}

	if ( empty( $attachments ) ) {

		unset( $tabs['gallery'] );

		return $tabs;

	}

	/* translators: %s: Number of attachments. */

	$tabs['gallery'] = sprintf( __( 'Gallery (%s)' ), "<span id='attachments-count'>$attachments</span>" );

	return $tabs;

}

/**

 * Outputs the legacy media upload tabs UI.

 *

 * @since 2.5.0

 *

 * @global string $redir_tab

 */

function the_media_upload_tabs() {

	global $redir_tab;

	$tabs    = media_upload_tabs();

	$default = 'type';

	if ( ! empty( $tabs ) ) {

		echo "<ul id='sidemenu'>\n";

		if ( isset( $redir_tab ) && array_key_exists( $redir_tab, $tabs ) ) {

			$current = $redir_tab;

		} elseif ( isset( $_GET['tab'] ) && array_key_exists( $_GET['tab'], $tabs ) ) {

			$current = $_GET['tab'];

		} else {

			/** This filter is documented in wp-admin/media-upload.php */

			$current = apply_filters( 'media_upload_default_tab', $default );

		}

		foreach ( $tabs as $callback => $text ) {

			$class = '';

				$class = " class='current'";

			}

			$href = add_query_arg(

				array(

					'tab'            => $callback,

					's'              => false,

					'paged'          => false,

					'post_mime_type' => false,

					'm'              => false,

				)

			);

			$link = "<a href='" . esc_url( $href ) . "'$class>$text</a>";

			echo "\t<li id='" . esc_attr( "tab-$callback" ) . "'>$link</li>\n";

		}

		echo "</ul>\n";

	}

}

/**

 * Retrieves the image HTML to send to the editor.

 *

 * @since 2.5.0

 *

 * @param int          $id      Image attachment ID.

 * @param string       $caption Image caption.

 * @param string       $title   Image title attribute.

 * @param string       $align   Image CSS alignment property.

 * @param string       $url     Optional. Image src URL. Default empty.

 * @param bool|string  $rel     Optional. Value for rel attribute or whether to add a default value. Default false.

 * @param string|int[] $size    Optional. Image size. Accepts any registered image size name, or an array of

 *                              width and height values in pixels (in that order). Default 'medium'.

 * @param string       $alt     Optional. Image alt attribute. Default empty.

 * @return string The HTML output to insert into the editor.

 */

function get_image_send_to_editor( $id, $caption, $title, $align, $url = '', $rel = false, $size = 'medium', $alt = '' ) {

	$html = get_image_tag( $id, $alt, '', $align, $size );

	if ( $rel ) {

		if ( is_string( $rel ) ) {

			$rel = ' rel="' . esc_attr( $rel ) . '"';

		} else {

			$rel = ' rel="attachment wp-att-' . (int) $id . '"';

		}

	} else {

		$rel = '';

	}

	if ( $url ) {

		$html = '<a href="' . esc_url( $url ) . '"' . $rel . '>' . $html . '</a>';

	}

	/**

	 * Filters the image HTML markup to send to the editor when inserting an image.

	 *

	 * @since 2.5.0

	 * @since 5.6.0 The `$rel` parameter was added.

	 *

	 * @param string       $html    The image HTML markup to send.

	 * @param int          $id      The attachment ID.

	 * @param string       $caption The image caption.

	 * @param string       $title   The image title.

	 * @param string       $align   The image alignment.

	 * @param string       $url     The image source URL.

	 * @param string|int[] $size    Requested image size. Can be any registered image size name, or

	 *                              an array of width and height values in pixels (in that order).

	 * @param string       $alt     The image alternative, or alt, text.

	 * @param string       $rel     The image rel attribute.

	 */

	$html = apply_filters( 'image_send_to_editor', $html, $id, $caption, $title, $align, $url, $size, $alt, $rel );

	return $html;

}

/**

 * Adds image shortcode with caption to editor.

 *

 * @since 2.6.0

 *

 * @param string  $html    The image HTML markup to send.

 * @param int     $id      Image attachment ID.

 * @param string  $caption Image caption.

 * @param string  $title   Image title attribute (not used).

 * @param string  $align   Image CSS alignment property.

 * @param string  $url     Image source URL (not used).

 * @param string  $size    Image size (not used).

 * @param string  $alt     Image `alt` attribute (not used).

 * @return string The image HTML markup with caption shortcode.

 */

function image_add_caption( $html, $id, $caption, $title, $align, $url, $size, $alt = '' ) {

	/**

	 * Filters the caption text.

	 *

	 * Note: If the caption text is empty, the caption shortcode will not be appended

	 * to the image HTML when inserted into the editor.

	 *

	 * Passing an empty value also prevents the {@see 'image_add_caption_shortcode'}

	 * Filters from being evaluated at the end of image_add_caption().

	 *

	 * @since 4.1.0

	 *

	 * @param string $caption The original caption text.

	 * @param int    $id      The attachment ID.

	 */

	$caption = apply_filters( 'image_add_caption_text', $caption, $id );

	/**

	 * Filters whether to disable captions.

	 *

	 * Prevents image captions from being appended to image HTML when inserted into the editor.

	 *

	 * @since 2.6.0

	 *

	 * @param bool $bool Whether to disable appending captions. Returning true from the filter

	 *                   will disable captions. Default empty string.

	 */

	if ( empty( $caption ) || apply_filters( 'disable_captions', '' ) ) {

		return $html;

	}

	$id = ( 0 < (int) $id ) ? 'attachment_' . $id : '';

	if ( ! preg_match( '/width=["\']([0-9]+)/', $html, $matches ) ) {

		return $html;

	}

	$width = $matches[1];

	$caption = str_replace( array( "\r\n", "\r" ), "\n", $caption );

	$caption = preg_replace_callback( '/<[a-zA-Z0-9]+(?: [^<>]+>)*/', '_cleanup_image_add_caption', $caption );

	// Convert any remaining line breaks to <br />.

	$caption = preg_replace( '/[ \n\t]*\n[ \t]*/', '<br />', $caption );

	$html = preg_replace( '/(class=["\'][^\'"]*)align(none|left|right|center)\s?/', '$1', $html );

	if ( empty( $align ) ) {

		$align = 'none';

	}

	$shcode = '[caption id="' . $id . '" align="align' . $align . '" width="' . $width . '"]' . $html . ' ' . $caption . '[/caption]';

	/**

	 * Filters the image HTML markup including the caption shortcode.

	 *

	 * @since 2.6.0

	 *

	 * @param string $shcode The image HTML markup with caption shortcode.

	 * @param string $html   The image HTML markup.

	 */

	return apply_filters( 'image_add_caption_shortcode', $shcode, $html );

}

/**

 * Private preg_replace callback used in image_add_caption().

 *

 * @access private

 * @since 3.4.0

 *

 * @param array $matches Single regex match.

 * @return string Cleaned up HTML for caption.

 */

function _cleanup_image_add_caption( $matches ) {

	// Remove any line breaks from inside the tags.

	return preg_replace( '/[\r\n\t]+/', ' ', $matches[0] );

}

/**

 * Adds image HTML to editor.

 *

 * @since 2.5.0

 *

 * @param string $html

 */

function media_send_to_editor( $html ) {

	?>

	<script type="text/javascript">

	var win = window.dialogArguments || opener || parent || top;

	win.send_to_editor( <?php echo wp_json_encode( $html ); ?> );

	</script>

	<?php

	exit;

}

/**

 * Saves a file submitted from a POST request and create an attachment post for it.

 *

 * @since 2.5.0

 *

 * @param string $file_id   Index of the `$_FILES` array that the file was sent.

 * @param int    $post_id   The post ID of a post to attach the media item to. Required, but can

 *                          be set to 0, creating a media item that has no relationship to a post.

 * @param array  $post_data Optional. Overwrite some of the attachment.

 * @param array  $overrides Optional. Override the wp_handle_upload() behavior.

 * @return int|WP_Error ID of the attachment or a WP_Error object on failure.

 */

function media_handle_upload( $file_id, $post_id, $post_data = array(), $overrides = array( 'test_form' => false ) ) {

	$time = current_time( 'mysql' );

	$post = get_post( $post_id );

	if ( $post ) {

		// The post date doesn't usually matter for pages, so don't backdate this upload.

		if ( 'page' !== $post->post_type && substr( $post->post_date, 0, 4 ) > 0 ) {

			$time = $post->post_date;

		}

	}

	$file = wp_handle_upload( $_FILES[ $file_id ], $overrides, $time );

	if ( isset( $file['error'] ) ) {

		return new WP_Error( 'upload_error', $file['error'] );

	}

	$name = $_FILES[ $file_id ]['name'];

	$ext  = pathinfo( $name, PATHINFO_EXTENSION );

	$name = wp_basename( $name, ".$ext" );

	$url     = $file['url'];

	$type    = $file['type'];

	$file    = $file['file'];

	$title   = sanitize_text_field( $name );

	$content = '';

	$excerpt = '';

	if ( preg_match( '#^audio#', $type ) ) {

		$meta = wp_read_audio_metadata( $file );

		if ( ! empty( $meta['title'] ) ) {

			$title = $meta['title'];

		}

		if ( ! empty( $title ) ) {

			if ( ! empty( $meta['album'] ) && ! empty( $meta['artist'] ) ) {

				/* translators: 1: Audio track title, 2: Album title, 3: Artist name. */

				$content .= sprintf( __( '"%1$s" from %2$s by %3$s.' ), $title, $meta['album'], $meta['artist'] );

			} elseif ( ! empty( $meta['album'] ) ) {

				/* translators: 1: Audio track title, 2: Album title. */

				$content .= sprintf( __( '"%1$s" from %2$s.' ), $title, $meta['album'] );

			} elseif ( ! empty( $meta['artist'] ) ) {

				/* translators: 1: Audio track title, 2: Artist name. */

				$content .= sprintf( __( '"%1$s" by %2$s.' ), $title, $meta['artist'] );

			} else {

				/* translators: %s: Audio track title. */

				$content .= sprintf( __( '"%s".' ), $title );

			}

		} elseif ( ! empty( $meta['album'] ) ) {

			if ( ! empty( $meta['artist'] ) ) {

				/* translators: 1: Audio album title, 2: Artist name. */

				$content .= sprintf( __( '%1$s by %2$s.' ), $meta['album'], $meta['artist'] );

			} else {

				$content .= $meta['album'] . '.';

			}

		} elseif ( ! empty( $meta['artist'] ) ) {

			$content .= $meta['artist'] . '.';

		}

		if ( ! empty( $meta['year'] ) ) {

			/* translators: Audio file track information. %d: Year of audio track release. */

			$content .= ' ' . sprintf( __( 'Released: %d.' ), $meta['year'] );

		}

		if ( ! empty( $meta['track_number'] ) ) {

			$track_number = explode( '/', $meta['track_number'] );

			if ( is_numeric( $track_number[0] ) ) {

				if ( isset( $track_number[1] ) && is_numeric( $track_number[1] ) ) {

					$content .= ' ' . sprintf(

						/* translators: Audio file track information. 1: Audio track number, 2: Total audio tracks. */

						__( 'Track %1$s of %2$s.' ),

						number_format_i18n( $track_number[0] ),

						number_format_i18n( $track_number[1] )

					);

				} else {

					$content .= ' ' . sprintf(

						/* translators: Audio file track information. %s: Audio track number. */

						__( 'Track %s.' ),

						number_format_i18n( $track_number[0] )

					);

				}

			}

		}

		if ( ! empty( $meta['genre'] ) ) {

			/* translators: Audio file genre information. %s: Audio genre name. */

			$content .= ' ' . sprintf( __( 'Genre: %s.' ), $meta['genre'] );

		}

		// Use image exif/iptc data for title and caption defaults if possible.

	} elseif ( str_starts_with( $type, 'image/' ) ) {

		$image_meta = wp_read_image_metadata( $file );

		if ( $image_meta ) {

			if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {

				$title = $image_meta['title'];

			}

			if ( trim( $image_meta['caption'] ) ) {

				$excerpt = $image_meta['caption'];

			}

		}

	}

	// Construct the attachment array.

	$attachment = array_merge(

		array(

			'post_mime_type' => $type,

			'guid'           => $url,

			'post_parent'    => $post_id,

			'post_title'     => $title,

			'post_content'   => $content,

			'post_excerpt'   => $excerpt,

		),

		$post_data

	);

	// This should never be set as it would then overwrite an existing attachment.

	unset( $attachment['ID'] );

	// Save the data.

	$attachment_id = wp_insert_attachment( $attachment, $file, $post_id, true );

	if ( ! is_wp_error( $attachment_id ) ) {

		/*

		 * Set a custom header with the attachment_id.

		 * Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.

		 */

		if ( ! headers_sent() ) {

			header( 'X-WP-Upload-Attachment-ID: ' . $attachment_id );

		}

		/*

		 * The image sub-sizes are created during wp_generate_attachment_metadata().

		 * This is generally slow and may cause timeouts or out of memory errors.

		 */

		wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );

	}

	return $attachment_id;

}

/**

 * Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().

 *

 * @since 2.6.0

 * @since 5.3.0 The `$post_id` parameter was made optional.

 *

 * @param string[] $file_array Array that represents a `$_FILES` upload array.

 * @param int      $post_id    Optional. The post ID the media is associated with.

 * @param string   $desc       Optional. Description of the side-loaded file. Default null.

 * @param array    $post_data  Optional. Post data to override. Default empty array.

 * @return int|WP_Error The ID of the attachment or a WP_Error on failure.

 */

function media_handle_sideload( $file_array, $post_id = 0, $desc = null, $post_data = array() ) {

	$overrides = array( 'test_form' => false );

	if ( isset( $post_data['post_date'] ) && substr( $post_data['post_date'], 0, 4 ) > 0 ) {

		$time = $post_data['post_date'];

	} else {

		$post = get_post( $post_id );

		if ( $post && substr( $post->post_date, 0, 4 ) > 0 ) {

			$time = $post->post_date;

		} else {

			$time = current_time( 'mysql' );

		}

	}

	$file = wp_handle_sideload( $file_array, $overrides, $time );

	if ( isset( $file['error'] ) ) {

		return new WP_Error( 'upload_error', $file['error'] );

	}

	$url     = $file['url'];

	$type    = $file['type'];

	$file    = $file['file'];

	$title   = preg_replace( '/\.[^.]+$/', '', wp_basename( $file ) );

	$content = '';

	// Use image exif/iptc data for title and caption defaults if possible.

	$image_meta = wp_read_image_metadata( $file );

	if ( $image_meta ) {

		if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {

			$title = $image_meta['title'];

		}

		if ( trim( $image_meta['caption'] ) ) {

			$content = $image_meta['caption'];

		}

	}