<?php
namespace app\api\controller;
use app\common\controller\Api;
use think\Db;
use think\File;
use think\Request;
use RecursiveIteratorIterator;
use RecursiveDirectoryIterator;
class Facility extends Api
{
    protected $noNeedLogin = ['*'];
    protected $noNeedRight = ['*'];

    public function getPreviewSubDirs()
    {
        $baseDir = rtrim(str_replace('\\', '/', ROOT_PATH), '/') . '/public/uploads/operate/ai/Preview';
        $baseRelativePath = 'uploads/operate/ai/Preview';

        if (!is_dir($baseDir)) {
            return json(['code' => 1, 'msg' => '目录不存在']);
        }

        // 包含 DB 时间戳扰动的缓存键
        $version = $this->generateFlexibleDirectoryHash($baseDir);
        $cacheKey = 'preview_flexible_dirs_' . $version;

        $dirList = cache($cacheKey);
        if (!$dirList) {
            $dirList = $this->scanFlexibleDirectories($baseDir, $baseRelativePath);
            cache($cacheKey, $dirList, 300); // 缓存 5 分钟（可调）
        } else {
            // 实时刷新 new_image_count（避免缓存值过期）
            foreach ($dirList as &$dir) {
                $dir['new_image_count'] = Db::name('text_to_image')
                    ->where('status', 1)
                    ->where('custom_image_url', '<>', '')
                    ->where('img_name', '<>', '')
                    ->whereLike('old_image_url', $dir['old_image_url'] . '/%')
                    ->count();
            }
        }

        return json([
            'code' => 0,
            'msg' => '获取成功',
            'data' => $dirList
        ]);
    }


    private function scanFlexibleDirectories($baseDir, $baseRelativePath)
    {
        $dirs = [];
        $index = 1;

        $firstLevelDirs = glob($baseDir . '/*', GLOB_ONLYDIR);
        foreach ($firstLevelDirs as $level1Path) {
            $secondLevelDirs = glob($level1Path . '/*', GLOB_ONLYDIR);

            if ($secondLevelDirs) {
                foreach ($secondLevelDirs as $level2Path) {
                    $dirs = array_merge($dirs, $this->processDir($level2Path, $baseDir, $baseRelativePath, $index));
                }
            } else {
                $dirs = array_merge($dirs, $this->processDir($level1Path, $baseDir, $baseRelativePath, $index));
            }
        }

        usort($dirs, function ($a, $b) {
            return $b['id'] - $a['id'];
        });

        return $dirs;
    }

    private function processDir($fullPath, $baseDir, $baseRelativePath, &$index)
    {
        $result = [];

        $relativeDir = ltrim(str_replace($baseDir, '', $fullPath), '/');
        $ctime = @filectime($fullPath) ?: time();

        $imageFiles = glob($fullPath . '/*.{jpg,jpeg,png}', GLOB_BRACE);
        $originalImageCount = $imageFiles ? count($imageFiles) : 0;

        $img_count = Db::name('text_to_image')
            ->where('status', 1)
            ->where('custom_image_url', '<>', '')
            ->where('img_name', '<>', '')
            ->whereLike('old_image_url', $baseRelativePath . '/' . $relativeDir . '/%')
            ->count();


        $queueLog = Db::name('image_task_log')
            ->whereLike('file_name', $baseRelativePath . '/' . $relativeDir . '/%')
            ->whereLike('log', '%处理中%')
            ->order('id', 'desc')
            ->find();


        if ($img_count === 0 && !$queueLog && $originalImageCount === 0) {
            return [];
        }

        $result[] = [
            'id' => $index++,
            'name' => basename($fullPath),
            'ctime' => $ctime,
            'ctime_text' => date('Y-m-d H:i:s', $ctime),
            'old_img_count' => $originalImageCount,
            'new_image_count' => $img_count,
            'old_image_url' => $baseRelativePath . '/' . $relativeDir,
            'new_image_url' => '/uploads/operate/ai/dall-e/',
            'queueLog_id' => $queueLog['id'] ?? '',
            'queueLog_task_id' => $queueLog['task_id'] ?? '',
            'queueLog_model_name' => $queueLog['model_name'] ?? '',
            'queueLog_model_name_status' => $queueLog ? 1 : 0,
        ];

        return $result;
    }


    private function generateFlexibleDirectoryHash($baseDir)
    {
        $hash = '';
        $dirPaths = [];

        $firstDirs = glob($baseDir . '/*', GLOB_ONLYDIR);
        foreach ($firstDirs as $dir1) {
            $subDirs = glob($dir1 . '/*', GLOB_ONLYDIR);
            if ($subDirs) {
                foreach ($subDirs as $sub) {
                    $dirPaths[] = $sub;
                    $hash .= basename($dir1) . '/' . basename($sub) . filemtime($sub);
                }
            } else {
                $dirPaths[] = $dir1;
                $hash .= basename($dir1) . filemtime($dir1);
            }
        }

        $baseRelativePath = 'uploads/operate/ai/Preview';
        $queueStatusBits = [];

        foreach ($dirPaths as $fullPath) {
            $relativeDir = ltrim(str_replace($baseDir, '', $fullPath), '/');
            $fileNameLike = $baseRelativePath . '/' . $relativeDir . '/%';

            // 查询是否存在任何“处理中”的记录
            $logs = Db::name('image_task_log')
                ->whereLike('file_name', $fileNameLike)
                ->whereLike('log', '%处理中%')
                ->select();

            // 转换为布尔状态再转成位标记（0 或 1）
            $queueStatusBits[] = count($logs) > 0 ? '1' : '0';

            // 可选：调试打印
            // echo "<pre>路径：{$fileNameLike} => 状态：" . (count($logs) > 0 ? '有处理中' : '无') . "</pre>";
        }

        // 队列状态位图拼接
        $queueStatusHash = implode('', $queueStatusBits); // 如：'01001'
        $hash .= '_QS_' . md5($queueStatusHash); // 状态稳定扰动，无需 time()

        return md5($hash);
    }


    /**
     * 获取指定目录所有图片（完全实时版本）
     */
    public function getPreviewimg()
    {
        $page = (int)$this->request->param('page', 1);
        $limit = (int)$this->request->param('limit', 50);
        $status = $this->request->param('status', '');
        $status_name = $this->request->param('status_name', '');
        $relativePath = $this->request->param('path', '');

        $basePath = ROOT_PATH . 'public/';
        $fullPath = $basePath . $relativePath;

        if (!is_dir($fullPath)) {
            return json(['code' => 1, 'msg' => '原图目录不存在']);
        }

        // 构建缓存键与构建锁键（仅缓存文件系统信息）
        $hash = md5($relativePath);
        $cacheKey = "previewimg_fileinfo_{$hash}";
        $lockKey = "previewimg_building_{$hash}";
        $cacheExpire = 600; // 10分钟

        $cachedFileInfo = cache($cacheKey);

        if (!$cachedFileInfo) {
            // 防止缓存"惊群效应"
            if (!cache($lockKey)) {
                cache($lockKey, 1, 60); // 1分钟构建锁

                // 获取所有图片文件信息
                $allImages = glob($fullPath . '/*.{jpg,jpeg,png}', GLOB_BRACE);
                $fileInfoMap = [];
                foreach ($allImages as $imgPath) {
                    $relative = str_replace('\\', '/', trim(str_replace($basePath, '', $imgPath), '/'));
                    $info = @getimagesize($imgPath);
                    $fileInfoMap[$relative] = [
                        'width' => $info[0] ?? 0,
                        'height' => $info[1] ?? 0,
                        'size_kb' => round(filesize($imgPath) / 1024, 2),
                        'created_time' => date('Y-m-d H:i:s', filectime($imgPath))
                    ];
                }

                // 构建缓存数据（仅文件系统信息）
                $cachedFileInfo = [];
                foreach (array_keys($fileInfoMap) as $path) {
                    $cachedFileInfo[] = [
                        'path' => $path,
                        'info' => $fileInfoMap[$path]
                    ];
                }

                // 设置缓存 + 删除构建锁
                cache($cacheKey, $cachedFileInfo, $cacheExpire);
                cache($lockKey, null);
            } else {
                // 等待缓存生成
                $waitTime = 0;
                while (!$cachedFileInfo && $waitTime < 10) {
                    sleep(1);
                    $waitTime++;
                    $cachedFileInfo = cache($cacheKey);
                }
                if (!$cachedFileInfo) {
                    return json(['code' => 2, 'msg' => '系统正忙，请稍后重试']);
                }
            }
        }

        // 获取所有需要实时查询的路径
        $paths = array_column($cachedFileInfo, 'path');

        // 实时查询数据库状态信息（单次批量查询）
        $dbRecords = Db::name('text_to_image')
            ->whereIn('old_image_url', $paths)
            ->field('id as img_id, old_image_url, new_image_url, custom_image_url, chinese_description, english_description, img_name, status, status_name')
            ->select();

        // 实时查询队列状态（单次批量查询）
        $queueRecords = Db::name('image_task_log')
            ->where('mod_rq', null)
            ->whereIn('file_name', $paths)
            ->field('file_name, log')
            ->select();

        // 实时查询same_count（稍后按需查询）

        // 构建映射关系
        $processedMap = [];
        foreach ($dbRecords as $item) {
            $key = str_replace('\\', '/', trim($item['old_image_url'], '/'));
            $processedMap[$key] = $item;
        }

        $queueMap = [];
        foreach ($queueRecords as $q) {
            $key = str_replace('\\', '/', trim($q['file_name'], '/'));
            $queueMap[$key] = $q['log'];
        }

        // 合并数据
        $mergedData = [];
        foreach ($cachedFileInfo as $data) {
            $path = $data['path'];
            $item = $processedMap[$path] ?? [];

            $mergedData[] = [
                'path' => $path,
                'item' => $item,
                'info' => $data['info'],
                'dbStatus' => isset($item['status']) ? (int)$item['status'] : 0,
                'dbStatusName' => $item['status_name'] ?? '',
                'isProcessed' => !empty($item['img_name']) && !empty($item['custom_image_url']),
                'queueStatus' => $queueMap[$path] ?? ''
            ];
        }

        // 筛选状态字段
        $filtered = array_filter($mergedData, function ($data) use ($status, $status_name) {
            if ($status !== '' && (int)$status !== $data['dbStatus']) return false;
            if ($status_name !== '' && $status_name !== $data['dbStatusName']) return false;
            return true;
        });

        // 分页处理
        $total = count($filtered);
        $paged = array_slice(array_values($filtered), ($page - 1) * $limit, $limit);

        // 实时查询当前页的same_count（优化性能）
        $pagedPaths = array_column($paged, 'path');
        $sameCountMap = [];
        if ($pagedPaths) {
            $sameCountMap = Db::name('text_to_image')
                ->whereIn('old_image_url', $pagedPaths)
                ->where('new_image_url', '<>', '')
                ->group('old_image_url')
                ->column('count(*) as cnt', 'old_image_url');
        }

        // 构建最终结果
        $result = [];
        foreach ($paged as $i => $data) {
            $path = $data['path'];
            $item = $data['item'];
            $info = $data['info'];

            $result[] = [
                'id' => ($page - 1) * $limit + $i + 1,
                'path' => $path,
                // 实时数据
                'status' => $data['dbStatus'],
                'status_name' => $data['dbStatusName'],
                'same_count' => $sameCountMap[$path] ?? 0,
                'is_processed' => $data['isProcessed'] ? 1 : 0,
                'queue_status' => $data['queueStatus'],
                'new_image_url' => $item['new_image_url'] ?? '',
                'custom_image_url' => $item['custom_image_url'] ?? '',
                'chinese_description' => $item['chinese_description'] ?? '',
                'english_description' => $item['english_description'] ?? '',
                'img_name' => $item['img_name'] ?? '',
                // 来自缓存
                'width' => $info['width'],
                'height' => $info['height'],
                'created_time' => $info['created_time']
            ];
        }

        return json([
            'code' => 0,
            'msg' => '获取成功',
            'data' => $result,
            'total' => $total,
            'page' => $page,
            'limit' => $limit
        ]);
    }

    /**
     * 通过服务器中目录获取对应数据
     */
    public function getlsit()
    {
        // 获取前端传入的图片路径参数
        $params = $this->request->param('path', '');
        // 查询数据库
        $res = Db::name('text_to_image')
            ->field('id,chinese_description,english_description,new_image_url,custom_image_url,size,old_image_url,img_name,model,imgtoimg_url')
            ->where('old_image_url', $params)
            ->where('img_name', '<>', '')
            ->order('id desc')
            ->select();
        return json(['code' => 0, 'msg' => '查询成功', 'data' => $res,'count'=>count($res)]);
    }

    /**
     * 图片上传
     */
    public function ImgUpload()
    {
        // 处理 CORS OPTIONS 预检请求
        if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
            header('Access-Control-Allow-Origin: *');
            header('Access-Control-Allow-Methods: POST, OPTIONS');
            header('Access-Control-Allow-Headers: Content-Type, Authorization');
            header('Access-Control-Max-Age: 86400');
            exit(204);
        }

        // 实际请求必须返回 CORS 头
        header('Access-Control-Allow-Origin: *');

        // 获取上传的文件
        $file = request()->file('image');

        if ($file) {
            // 指定目标目录（你想上传到的目录）
            $targetPath = ROOT_PATH . 'public' . DS . 'uploads' . DS . 'operate' . DS . 'ai' . DS . 'Preview';

            // 若目录不存在则创建
            if (!is_dir($targetPath)) {
                mkdir($targetPath, 0755, true);
            }

            // 移动文件到指定目录，并验证大小/格式
            $info = $file->validate([
                'size' => 10485760, // 最大10MB
                'ext' => 'jpg,png'
            ])->move($targetPath);

            if ($info) {
                $fileName = $info->getSaveName();
                $imageUrl = '/uploads/operate/ai/Preview/' . str_replace('\\', '/', $fileName);
                return json(['code' => 0, 'msg' => '成功', 'data' => ['url' => $imageUrl]]);
            } else {
                $res = $file->getError();
                return json(['code' => 1, 'msg' => '失败', 'data' => $res]);
            }
        }

        return json(['code' => 1, 'msg' => '没有文件上传', 'data' => null]);
    }


    /**
     * 查询模版
     */
    public function Template(){
        $Template = Db::name("template")->where('ids',1)->find();
        return json([
            'code' => 0,
            'msg' => '模版',
            'data' => $Template
        ]);
    }

    /**
     * 更新模版
     */
    public function updatetemplate(){
        if (Request::instance()->isPost() == false){
            $this->error('非法请求');
        }
        $params = Request::instance()->post();
        if (empty($params['textareaContent']) || empty($params['width']) || empty($params['height'])) {
            return json(['code' => 1, 'msg' => '参数缺失']);
        }
        $Template = Db::name("template")
            ->where('ids', 1)
            ->update([
                'english_content' => $params['english_content'],  // 更新文生文模版内容
                'content' => $params['textareaContent'],  // 更新图生文模版内容
                'width' => $params['width'],  // 更新宽度
                'height' => $params['height'],  // 更新宽度
            ]);
        if ($Template){
            return json(['code' => 0, 'msg' => '成功']);
        }else{
            return json(['code' => 1, 'msg' => '失败']);
        }
    }

    /**
     * 打包图片（支持对象结构中的 path 字段）
     */
    public function packImagess()
    {
        try {
            $params = $this->request->post();
            $paths = $params['paths'] ?? [];

            if (empty($paths) || !is_array($paths)) {
                return json(['code' => 1, 'msg' => '路径参数不能为空或格式不正确']);
            }

            // 提取所有合法的路径（支持字符串或对象中带 path 字段）
            $validPaths = [];

            foreach ($paths as $item) {
                if (is_string($item)) {
                    $validPaths[] = $item;
                } elseif (is_array($item) && isset($item['path']) && is_string($item['path'])) {
                    $validPaths[] = $item['path'];
                }
            }

            if (empty($validPaths)) {
                return json(['code' => 1, 'msg' => '没有有效的图片路径']);
            }

            // 设置基本路径和 zip 目录
            $basePath = ROOT_PATH . 'public/';
            $zipDir = $basePath . 'uploads/operate/ai/zip/';

            if (!is_dir($zipDir)) {
                mkdir($zipDir, 0755, true);
            }

            // 生成压缩文件路径
            $fileName = 'images_' . date('Ymd_His') . '.zip';
            $zipPath = $zipDir . $fileName;

            $zip = new \ZipArchive();
            if ($zip->open($zipPath, \ZipArchive::CREATE) !== TRUE) {
                return json(['code' => 1, 'msg' => '无法创建压缩包']);
            }

            $addCount = 0;
            foreach ($validPaths as $relativePath) {
                $relativePath = ltrim($relativePath, '/');  // 去除前导斜杠
                $fullPath = $basePath . $relativePath;

                if (file_exists($fullPath)) {
                    // 使用 basename 作为压缩包内的文件名（不保留路径结构）
                    $zip->addFile($fullPath, basename($fullPath));
                    $addCount++;
                }
            }

            $zip->close();

            if ($addCount === 0) {
                @unlink($zipPath);
                return json(['code' => 1, 'msg' => '未找到有效图片文件，未生成压缩包']);
            }

            $downloadUrl = request()->domain() . '/uploads/operate/ai/zip/' . $fileName;

            return json([
                'code' => 0,
                'msg' => '打包成功',
                'download_url' => $downloadUrl
            ]);
        } catch (\Exception $e) {
            return json([
                'code' => 1,
                'msg' => '异常错误：' . $e->getMessage()
            ]);
        }
    }

}