<?php

function awpcp_image_resizer() {
    return new AWPCP_ImageResizer( awpcp_filesystem(), awpcp()->settings );
}

class AWPCP_ImageResizer {

    private $filesystem;
    private $settings;

    public function __construct( $filesystem, $settings ) {
        $this->filesystem = $filesystem;
        $this->settings = $settings;
    }

    public function create_thumbnail( $source, $filename ) {
        $thumbnails_dir = $this->get_thumbnails_dir();

        $width = $this->settings->get_option( 'imgthumbwidth' );
        $height = $this->settings->get_option( 'imgthumbheight' );
        $crop = $this->settings->get_option( 'crop-thumbnails' );

        return $this->make_intermediate_image_size( $source, $filename, $thumbnails_dir, $width, $height, $crop );
    }

    public function get_thumbnails_dir() {
        return $this->filesystem->get_thumbnails_dir();
    }

    private function make_intermediate_image_size( $source, $filename, $dest_dir, $width, $height, $crop = false, $suffix='' ) {
        $pathinfo = awpcp_utf8_pathinfo( $source );

        $safe_suffix = empty( $suffix ) ? '.' : "-$suffix.";
        $extension = $pathinfo['extension'];
        $parent_directory = $pathinfo['dirname'];

        $generated_image_name = $filename . $safe_suffix . $extension;
        $generated_image_path = implode( DIRECTORY_SEPARATOR, array( $dest_dir, $generated_image_name ) );

        $generated_image = image_make_intermediate_size( $source, $width, $height, $crop );

        if ( is_array( $generated_image ) ) {
            $temporary_image_path = implode( DIRECTORY_SEPARATOR, array( $parent_directory, $generated_image['file'] ) );
            $result = rename( $temporary_image_path, $generated_image_path );
        }

        if ( ! isset( $result ) || $result === false ) {
            $result = copy( $source, $generated_image_path );
        }

        chmod( $generated_image_path, 0644 );

        return $result;
    }

    public function create_thumbnail_from_uploaded_file( $file ) {
        return $this->create_thumbnail( $file->get_path(), $file->get_file_name() );
    }

    public function create_thumbnail_for_media( $media, $source_image ) {
        $filename = sprintf( "%s-%d", awpcp_utf8_pathinfo( $media->name, PATHINFO_FILENAME ), $media->id );
        return $this->create_thumbnail( $source_image, $filename );
    }
}