mtb_dcatadmin_plus/app/Libraries/CommonHelper.php

<?php

// app/Libraries/CommonHelper.php
namespace App\Libraries;

use Dcat\Admin\Admin;

class CommonHelper
{

    /*
     * $images 格式：['image.jpg','image2.jpg']
     * $ossSource 1:本地 2:相册
     * 返回显示的HTML显示图片
     */
    public static function displayImage($images,$boxSize=60,$imgSize=1024,$ossSource=1,$hasLink=true)
    {
        if (empty($images) || empty($images[0])) {
            $html = "";
        } else {


            // 默认显示 100x100 的图片
            $thumbnailImages = array_map(function ($imageUrl) use ($boxSize,$ossSource) {
                if ($ossSource == 1) {
                    $imageUrl= CommonHelper::ossUrl($imageUrl);
                } else {
                    $imageUrl= CommonHelper::albumUrl($imageUrl);
                }
                $extension = pathinfo($imageUrl, PATHINFO_EXTENSION);
                if ($extension == 'svg') {
                    return $imageUrl;
                } else {
                    return $imageUrl . "?x-oss-process=image/resize,m_pad,h_{$boxSize},w_{$boxSize},color_ffffff";
                }

            }, $images);

            // 生成点击查看大图的链接
            $largeImages = array_map(function ($imageUrl) use ($imgSize,$ossSource) {
                if ($ossSource == 1) {
                    $imageUrl= CommonHelper::ossUrl($imageUrl);
                } else {
                    $imageUrl= CommonHelper::albumUrl($imageUrl);
                }
                $extension = pathinfo($imageUrl, PATHINFO_EXTENSION);
                if ($extension == 'svg') {
                    return $imageUrl;
                } else {
                    return $imageUrl . "?x-oss-process=image/resize,m_lfit,w_{$imgSize},h_{$imgSize}";
                }
            }, $images);

            // 显示缩略图，并添加点击查看大图的功能
            $html = '';
            foreach ($thumbnailImages as $index => $thumbnailUrl) {
                $largeUrl = $largeImages[$index];
                if ($hasLink) {
                    $html .= "<a href='$largeUrl' target='_blank'><img src='$thumbnailUrl' style='height:{$boxSize}px; margin-right:5px; border: 1px solid #ececf1;'></a>";
                } else {
                    $html .= "<img src='$thumbnailUrl' style='height:{$boxSize}px; margin-right:5px; border: 1px solid #ececf1;'>";
                }
            }

            return $html;
        }
        return $html;
    }

    /*
     * 返回oss的url
     */
    public static function ossUrl($imageUrl)
    {
        if (strpos($imageUrl, 'http:') === 0 || strpos($imageUrl, 'https:') === 0) {
            return  $imageUrl;
        }

        if (env('OSS_DOMAIN')) {
            return "http://".env('OSS_DOMAIN').'/'.$imageUrl;
        }
        return "http://".env('OSS_BUCKET').'.'.env('OSS_ENDPOINT').'/'.$imageUrl;
    }

    /*
     * 图库图片URL
     */
    public static function albumUrl($imageUrl)
    {
        if (strpos($imageUrl, 'http:') === 0 || strpos($imageUrl, 'https:') === 0) {
            return  $imageUrl;
        }

        return env('ALBUM_OSS_URL').'/'.$imageUrl;
    }



    /*
     * 显示视频
     */
    public static function displayVideo($items,$videoCover,$videoSrc,$boxSize=150,$ossSource=1)
    {
        $html = '';
        if (is_array($items)) {
            foreach ($items as $item) {
                $item = (array) $item;
                $cover = $item[$videoCover];
                $src = $item[$videoSrc];
                if ($ossSource == 1) {
                    $videoUrl = CommonHelper::ossUrl($src);
                } else {
                    $videoUrl = CommonHelper::albumUrl($src);
                }
                if ($ossSource == 1) {
                    $thumbnailUrl = CommonHelper::ossUrl($cover) . "?x-oss-process=image/resize,m_pad,h_{$boxSize},w_{$boxSize},color_ffffff";
                } else {
                    $thumbnailUrl = CommonHelper::albumUrl($cover) . "?x-oss-process=image/resize,m_pad,h_{$boxSize},w_{$boxSize},color_ffffff";
                }
                $html .= '<div class="video-container"><img src="'.$thumbnailUrl.'" alt="Video Thumbnail" class="video-thumbnail"><a href="#" class="downloadVideo" videoUrl="'.$videoUrl.'")"><div class="video-download-button"></div></a> <a href="#" class="playVideo" videoUrl="'.$videoUrl.'")"><div class="play-button"></div></a></div>';
            }
            $html .= '<div class="video-popup" id="videoPopup"><span class="close-btn">&times;</span> <iframe src="" frameborder="0" allowfullscreen></iframe></div>';
        }
        //视频播放CSS
        Admin::style("
        .video-container {
            position: relative;
            display: inline-block;
        }
        .video-container img {
            height: 200px;
            margin-right: 5px;
            border: 1px solid #ececf1;
        }
        .video-download-button {
            position: absolute;
            top: 50%;
            left: 35%;
            transform: translate(-50%, -50%);
            width: 35px;
            height: 35px;
            background-color: rgba(0, 0, 0, 0.5);
            border-radius: 50%;
            cursor: pointer;
        }
        .video-download-button::after {
            content: '↓';
            font-size: 15px;
            color: white;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .play-button {
            position: absolute;
            top: 50%;
            left: 58%;
            transform: translate(-50%, -50%);
            width: 35px;
            height: 35px;
            background-color: rgba(0, 0, 0, 0.5);
            border-radius: 50%;
            cursor: pointer;
        }
        .play-button::after {
            content: '▶';
            font-size: 15px;
            color: white;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .video-popup {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            padding: 25px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
            z-index: 1000;
        }
        .video-popup iframe {
            width: 800px;
            height: 450px;
        }
        .close-btn {
            position: absolute;
            top: 0px;
            right: 5px;
            font-size: 24px;
            color: #000;
            cursor: pointer;
        }
        .close-btn:hover {
            color: #f00;
        }
        ");

        Admin::script("
        $('.playVideo').on('click', function(e) {
            e.preventDefault(); // 阻止默认跳转行为
            var videoUrl = $(this).attr('videoUrl'); // 获取 videoUrl 属性
            $('#videoPopup').css('display', 'block');
            $('#videoPopup iframe').attr('src', videoUrl); // 设置 iframe 的 src
        });

$('.downloadVideo').on('click', function(e) {
    e.preventDefault();
    const button = $(this);
    const videoUrl = button.attr('videoUrl');

    // 使用 Dcat Admin 内置 loading 组件
    const loading = Dcat.loading({
    });

    fetch(videoUrl, {
        headers: new Headers({
            'Origin': location.origin,
            'X-CSRF-TOKEN': Dcat.token // 集成 CSRF 保护[7](@ref)
        }),
        mode: 'cors'
    }).then(response => {
        if (!response.ok) throw new Error(`HTTP \${response.status}`);

        // 动态创建进度条组件
        const progress = new Dcat.Progress({
            title: '下载进度',
            showCancel: true,
            onCancel: () => controller.abort()
        });

        const reader = response.body.getReader();
        const controller = new AbortController();
        const contentLength = +response.headers.get('Content-Length');
        let receivedLength = 0;
        const chunks = [];

        // 流式处理优化
        const processChunk = ({ done, value }) => {
            if (done || progress.canceled) {
                if (!progress.canceled) {
                    const blob = new Blob(chunks);
                    const filename = videoUrl.split('/').pop() || 'video.mp4';
                    const link = document.createElement('a');

                    // 集成 Dcat 文件管理器[6](@ref)
                    Dcat.handleFileDownload(blob, filename);
                }
                progress.close();
                loading.close();
                return;
            }

            chunks.push(value);
            receivedLength += value.length;
            progress.update({
                percent: Math.round((receivedLength / contentLength) * 100),
                statusText: `\${formatBytes(receivedLength)} / \${formatBytes(contentLength)}`
            });

            return reader.read().then(processChunk);
        };

        return reader.read().then(processChunk);
    }).catch(error => {
        loading.close();
        Dcat.error(`下载失败: \${error.message}`);
        console.error('Download Error:', error);
    });
});

// 字节单位转换工具函数
function formatBytes(bytes) {
    const units = ['B', 'KB', 'MB', 'GB'];
    let i = 0;
    while (bytes >= 1024 && i < units.length - 1) {
        bytes /= 1024;
        i++;
    }
    return `\${bytes.toFixed(1)} \${units[i]}`;
}


        // 点击关闭按钮关闭视频
        $('.close-btn').on('click', function() {
            $('#videoPopup').css('display', 'none');
            $('#videoPopup iframe').attr('src', ''); // 停止播放视频
        });
        ");
        return $html; // 当没有数组数据时
    }

    /*
     * 替换新增与编辑的url，在后边加上指定的参数 (适用于弹出框的新增与编辑)
     * $addButton = '.tree-quick-create';
     * $editButton = '.tree-quick-edit';
     * $paramsUrl = 'location=0';
     */
    public static function replaceAddEditerUrl($addButton,$editButton,$paramsUrl) {

        Admin::script(
            <<<JS
var button = $('{$addButton}');
var currentUrl = button.attr('data-url');
if (currentUrl.indexOf('?') === -1) {
    button.attr('data-url', currentUrl + '?{$paramsUrl}');
} else {
    button.attr('data-url', currentUrl + '&{$paramsUrl}');
}

$('{$editButton}').each(function() {
    var currentUrl = $(this).attr('data-url');
    if (currentUrl.indexOf('?') === -1) {
        $(this).attr('data-url', currentUrl + '?{$paramsUrl}');
    } else {
        // 如果已经有查询参数，添加 &id=123
        $(this).attr('data-url', currentUrl + '&{$paramsUrl}');
    }
});
JS
        );
    }


    public static function seoReplace($titleName = 'title',$modelName = 'pages')
    {
        if ($titleName) {
            Admin::script(
<<<JS
    $('input[name="{$titleName}"]').on('input', function() {
        // 将 title 的值赋给 seo_title
        $('input[name="seo_title"]').val($(this).val());
    });
JS
            );
        }
        //ajax 生成slug
        if ($modelName) {
            Admin::script(
<<<JS
    $('input[name="{$titleName}"]').on('blur', function() {
        //通过ajax请求修改slug
        title = $(this).val();
        $.ajax({
            url: '/dist/api/generate-slug',
            type: 'GET',
            data: {
                model:'{$modelName}',
                title: title,
            },
            success: function(response) {
                $('input[name="slug"]').val(response.slug);
            }
        });
    });
JS
            );
        }

    }


    public  static function slug_fix($slug)
    {
        if ($slug == '') {
            return '';
        } else {
            $slug = preg_replace('/\s+/', '-', $slug);
            $slug = strtolower($slug);
            return $slug;
        }
    }



    /*
     * 用于详情页，图片下载与放大
     */
    public static function viewDownloadEnlarge() {
//css
Admin::style(
<<<CSS
.download-wrapper::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(58, 54, 54, 0.34); /* 浅灰色半透明 */
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: 8px;
}

.download-wrapper {
    position: relative;
    display: inline-block;
    margin: 15px;
    overflow: hidden;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.download-hover {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    gap: 12px;
    z-index: 1; /* 确保按钮在遮罩层上方 */
}

.download-btn {
    background: rgba(255, 255, 255, 0.95);
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 3px 6px rgba(0,0,0,0.16);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.download-btn.disabled {
    background: rgba(189, 189, 189, 0.95);
    cursor: not-allowed;
}

.download-btn i {
    font-size: 18px;
    color: #2196F3;
}

.download-wrapper:hover::after {
    opacity: 1;
}

.download-wrapper:hover .download-hover {
    opacity: 1;
}

.auto-download-image {
    display: block;
    transition: transform 0.3s ease;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.download-wrapper:hover img {
    transform: scale(1.04);
}


   /* 新增全屏样式 */
        .fullscreen-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.95);
            display: none;
            z-index: 1000;
            cursor: zoom-out;
        }

        .fullscreen-image {
            position: absolute;
            max-width: 90%;
            max-height: 90%;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            border-radius: 8px;
            animation: zoomIn 0.3s ease;
        }

        @keyframes zoomIn {
            from { transform: translate(-50%, -50%) scale(0.8); }
            to { transform: translate(-50%, -50%) scale(1); }
        }

        .download-wrapper:hover .download-hover {
            opacity: 1;
        }
CSS );
//js
Admin::script(
<<<JS
      const fullscreenOverlay = $('.fullscreen-overlay');
        const fullscreenImage = $('.fullscreen-image');

   function initDownloadButtons() {
    $('.box-body').find("img").each(function() {
        // 新增判断：如果父元素是<a>或已有download-wrapper则跳过
        if ($(this).parent().hasClass('download-wrapper') || $(this).parent().is('a')) return;
        if ($(this).hasClass('fullscreen-image') || $(this).hasClass('video-thumbnail')) {
            return;
        }
        const fileName = this.src.split('/').pop().split('?')[0];

        $(this).wrap('<div class="download-wrapper"></div>')
            .after(`<div class="download-hover">
                                 <button class="download-btn" title="下载">
                                   <i class="feather icon-download"></i>
                                 </button>
                                 <button class="download-btn zoom-btn" title="放大">
                                   <i class="feather icon-zoom-in"></i>
                                 </button>
                               </div>`);

        const \$btn = $(this).parent().find('.download-btn').first();
        \$btn.click(function() {
            const btn = $(this);
            btn.addClass('disabled');

            downloadImage(
                btn.closest('.download-wrapper').find('img')[0].src,
                fileName
            ).finally(() => btn.removeClass('disabled'));
        });

                        // 全屏放大功能
                $(this).next().find('.zoom-btn').click(function() {
                    let imgSrc = $(this).closest('.download-wrapper').find('img').attr('src');
                    imgSrc = imgSrc.replace(/\?.*$/, '');
                    fullscreenImage.attr('src', imgSrc);
                    fullscreenOverlay.fadeIn(200);
                });

    });
}

        // 关闭全屏
        fullscreenOverlay.click(function(e) {
            if (e.target === this) $(this).fadeOut(200);
        });

function downloadImage(url, filename) {
    url = url.replace(/\?.*$/, '');
    return new Promise((resolve, reject) => {
        fetch(url)
            .then(response => {
                if (!response.ok) throw new Error('网络异常');
                return response.blob()
            })
            .then(blob => {
                const blobUrl = URL.createObjectURL(blob);
                console.log(blobUrl);
                const link = document.createElement('a');
                link.href = blobUrl;
                link.download = filename || 'image.jpg';
                document.body.appendChild(link);
                link.click();
                setTimeout(() => {
                    document.body.removeChild(link);
                    URL.revokeObjectURL(blobUrl);
                }, 100);
                resolve();
            })
            .catch(error => {
                console.error(error);
                alert('下载失败');
                reject(error);
            });
    });
}

initDownloadButtons();

JS);
    }

    /*
     * 用于详情页，图片下载与放大 HTML
     */
    public static function viewDownloadEnlargeHtml() {
        return '<div class="fullscreen-overlay"><img src="" class="fullscreen-image"></div>';
    }

}