<?php
namespace common\components;

use Yii;

class imgUtil
{

    //获取图片路径的前缀 ssh 2021.3.12
    public static function getPrefix()
    {
        //$style 1花店 2供货商 3商城
        $style = Yii::$app->params['ptStyle'];
        if ($style == 2) {
            return Yii::$app->params['ghsImgHost'];
        } elseif ($style == 1) {
            return Yii::$app->params['hdImgHost'];
        } elseif ($style == 3) {
            return Yii::$app->params['mallImgHost'];
        } else {
            return Yii::$app->params['hdImgHost'];
        }
    }

    //组合出图片路径 ssh 2021.4.9
    public static function groupImg($pic)
    {
        $prefix = self::getPrefix();
        if (empty($pic)) {
            return $prefix . 'hhb_small.png';
        }
        return $prefix . $pic;
    }

    /**
     * OSS 图片水印用的对象路径（桶内相对路径，不要带域名）
     * xhGoods.cover 常为 default-img.png，实际对象在 retail/default-img.png
     */
    public static function normalizeOssObjectPath($pic)
    {
        $pic = trim((string)$pic);
        if ($pic === '') {
            return 'retail/default-img.png';
        }
        if (strpos($pic, 'http://') === 0 || strpos($pic, 'https://') === 0) {
            $pic = ltrim(parse_url($pic, PHP_URL_PATH) ?? '', '/');
        }
        $pic = ltrim($pic, '/');
        if ($pic === 'default-img.png' || $pic === 'hhb_small.png') {
            return 'retail/default-img.png';
        }
        return $pic;
    }

    /**
     * 通过 OSS image/info 读取图片宽高（用于海报动态画布）
     *
     * @return array{0:int,1:int} [width, height]
     */
    public static function getOssImageSize($objectPath, $prefix = null)
    {
        $objectPath = self::normalizeOssObjectPath($objectPath);
        if ($prefix === null || $prefix === '') {
            $prefix = self::getPrefix();
        }
        $infoUrl = rtrim($prefix, '/') . '/' . $objectPath . '?x-oss-process=image/info';
        $context = stream_context_create([
            'http' => [
                'timeout' => 5,
                'ignore_errors' => true,
            ],
        ]);
        $json = @file_get_contents($infoUrl, false, $context);
        if ($json === false || $json === '') {
            return [0, 0];
        }
        $data = json_decode($json, true);
        if (!is_array($data)) {
            return [0, 0];
        }
        $w = (int)($data['ImageWidth']['value'] ?? 0);
        $h = (int)($data['ImageHeight']['value'] ?? 0);

        return [$w, $h];
    }

}