<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;

/**
 * MyTrack 动作处理器
 *
 * @package MyTrack
 */
class MyTrack_Action extends Typecho_Widget implements Widget_Interface_Do
{
    /**
     * 数据库连接
     *
     * @access private
     * @var PDO
     */
    private $db;

    /**
     * 构造函数
     *
     * @access public
     * @param mixed $request request对象
     * @param mixed $response response对象
     * @param mixed $params 参数列表
     * @return void
     */
    public function __construct($request, $response, $params = NULL)
    {
        parent::__construct($request, $response, $params);
        $this->db = MyTrack_Plugin::getDbConnection();
    }

    /**
     * 动作入口
     *
     * @access public
     * @return void
     */
    public function action()
    {
        $this->widget('Widget_User')->pass('administrator');
        $this->on($this->request->is('do=add'))->add();
        $this->on($this->request->is('do=update'))->update();
        $this->on($this->request->is('do=delete'))->delete();
        $this->on($this->request->is('do=get'))->get();
        $this->on($this->request->is('do=getAll'))->getAll();
        $this->on($this->request->is('do=getOne'))->get();
        $this->on($this->request->is('do=list'))->list();
        $this->on($this->request->is('do=batchDelete'))->batchDelete();
        $this->on($this->request->is('do=import'))->import();
        $this->on($this->request->is('do=export'))->export();
        $this->on($this->request->is('do=exportSimple'))->exportSimple();
        $this->on($this->request->is('do=getArticleImages'))->getArticleImages();
        $this->on($this->request->is('do=getById'))->getById();
        $this->on($this->request->is('do=getRelatedArticlesInfo'))->getRelatedArticlesInfo();

        // 默认返回列表
        $this->response->throwJson(array(
            'success' => false,
            'message' => '无效的操作'
        ));
    }

    /**
     * 检测重复数据（基于经纬度）
     *
     * @access private
     * @param float $latitude 纬度
     * @param float $longitude 经度
     * @param int $excludeId 要排除的ID（更新时使用）
     * @return array|false 返回重复的数据信息，false表示无重复
     */
    private function checkDuplicate($latitude, $longitude, $excludeId = null)
    {
        try {
            // 根据经纬度进行检测，使用较高精度（0.000001度约等于0.1米）
            $sql = "SELECT id, name FROM plugin_track_footprint 
                    WHERE ABS(latitude - ?) < 0.000001 
                    AND ABS(longitude - ?) < 0.000001";
            
            $params = array($latitude, $longitude);
            
            if ($excludeId !== null) {
                $sql .= " AND id != ?";
                $params[] = $excludeId;
            }
            
            $sql .= " LIMIT 1";
            
            $stmt = $this->db->prepare($sql);
            $stmt->execute($params);
            $result = $stmt->fetch(PDO::FETCH_ASSOC);
            
            return $result ? $result : false;
        } catch (PDOException $e) {
            error_log('检测重复数据失败: ' . $e->getMessage());
            return false;
        }
    }

    public function add()
    {
        // 原有的参数获取
        $latitude = $this->request->get('latitude');
        $longitude = $this->request->get('longitude');
        $name = $this->request->get('name');
        $description = $this->request->get('description');
        $tags = $this->request->get('tags');
        $article_cid = $this->request->get('article_cid');
        $urlLabel = $this->request->get('urlLabel');
        $url = $this->request->get('url');
        $photos = $this->request->get('photos');
        $date = $this->request->get('date');
        
        // 新增字段
        $address = $this->request->get('address');
        $location_type = $this->request->get('location_type');
        $rating_level = $this->request->get('rating_level', 0);
        $categories = $this->request->get('categories');
        $review = $this->request->get('review');
        $markerColor = $this->request->get('markerColor');
        $related_articles = $this->request->get('related_articles');
        $highlights = $this->request->get('highlights');

        // 如果提供了日期，确保格式为 YYYY-MM-DD HH:MM:SS
        if (!empty($date)) {
            $date = date('Y-m-d H:i:s', strtotime($date));
        }

        // 验证必填字段
        if (empty($latitude) || empty($longitude) || empty($name)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '经纬度和地点名称不能为空'
            ));
        }

        // 检查重复数据（基于经纬度）
        $duplicate = $this->checkDuplicate($latitude, $longitude);
        if ($duplicate !== false && isset($duplicate['name']) && isset($duplicate['id'])) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => "该位置已存在地点：{$duplicate['name']}（ID: {$duplicate['id']}），请勿重复添加"
            ));
        }

        try {
            // 如果提供了文章CID，获取文章信息和图片
            if (!empty($article_cid)) {
                $articleInfo = MyTrack_Plugin::getArticleInfo($article_cid);

                // 如果没有提供图片链接，尝试从文章中提取（限制4张）
                if (empty($photos) && !empty($articleInfo['images'])) {
                    $limitedImages = array_slice($articleInfo['images'], 0, 4);
                    $photos = implode(',', $limitedImages);
                }

                // 如果没有提供文章标题，尝试从文章中获取
                if (empty($urlLabel) && !empty($articleInfo['title'])) {
                    $urlLabel = $articleInfo['title'];
                }

                // 如果没有提供文章链接，尝试从文章中获取
                if (empty($url) && !empty($articleInfo['link'])) {
                    $url = $articleInfo['link'];
                }

                // 如果没有提供标签，尝试从文章中获取
                if (empty($tags) && !empty($articleInfo['tags'])) {
                    $tags = implode(',', $articleInfo['tags']);
                }
            }

            $stmt = $this->db->prepare("INSERT INTO plugin_track_footprint
                (latitude, longitude, name, address, location_type, rating_level, categories, review, description, tags, article_cid, urlLabel, url, photos, date, markerColor, related_articles, highlights)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");

            $stmt->execute(array(
                $latitude,
                $longitude,
                $name,
                $address,
                $location_type,
                $rating_level,
                $categories,
                $review,
                $description,
                $tags,
                $article_cid,
                $urlLabel,
                $url,
                $photos,
                $date,
                $markerColor,
                $related_articles,
                $highlights
            ));

            $id = $this->db->lastInsertId();

            // 清除足迹缓存
            $this->clearFootprintCache();

            $this->response->throwJson(array(
                'success' => true,
                'message' => '足迹添加成功',
                'data' => array(
                    'id' => $id
                )
            ));
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '添加失败: ' . $e->getMessage()
            ));
        }
    }

    public function update()
    {
        $id = $this->request->get('id');
        $latitude = $this->request->get('latitude');
        $longitude = $this->request->get('longitude');
        $name = $this->request->get('name');
        $description = $this->request->get('description');
        $tags = $this->request->get('tags');
        $article_cid = $this->request->get('article_cid');
        $urlLabel = $this->request->get('urlLabel');
        $url = $this->request->get('url');
        $photos = $this->request->get('photos');
        $date = $this->request->get('date');
        
        // 新增字段
        $address = $this->request->get('address');
        $location_type = $this->request->get('location_type');
        $rating_level = $this->request->get('rating_level', 0);
        $categories = $this->request->get('categories');
        $review = $this->request->get('review');
        $markerColor = $this->request->get('markerColor');
        $related_articles = $this->request->get('related_articles');
        $highlights = $this->request->get('highlights');

        // 验证必填字段
        if (empty($id) || empty($latitude) || empty($longitude) || empty($name)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => 'ID、经纬度和地点名称不能为空'
            ));
        }

        // 检查重复数据（基于经纬度，排除自身）
        $duplicate = $this->checkDuplicate($latitude, $longitude, $id);
        if ($duplicate !== false && isset($duplicate['name']) && isset($duplicate['id'])) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => "该位置已存在其他地点：{$duplicate['name']}（ID: {$duplicate['id']}），请修改经纬度"
            ));
        }

        try {
            // 如果提供了文章CID，获取文章信息和图片
            if (!empty($article_cid)) {
                $articleInfo = MyTrack_Plugin::getArticleInfo($article_cid);

                if (empty($photos) && !empty($articleInfo['images'])) {
                    $limitedImages = array_slice($articleInfo['images'], 0, 4);
                    $photos = implode(',', $limitedImages);
                }

                if (empty($urlLabel) && !empty($articleInfo['title'])) {
                    $urlLabel = $articleInfo['title'];
                }

                if (empty($url) && !empty($articleInfo['link'])) {
                    $url = $articleInfo['link'];
                }

                if (empty($tags) && !empty($articleInfo['tags'])) {
                    $tags = implode(',', $articleInfo['tags']);
                }
            }

            $stmt = $this->db->prepare("UPDATE plugin_track_footprint
                SET latitude = ?, longitude = ?, name = ?, address = ?, location_type = ?, rating_level = ?, categories = ?, review = ?, description = ?, tags = ?, article_cid = ?,
                    urlLabel = ?, url = ?, photos = ?, date = ?, markerColor = ?, related_articles = ?, highlights = ?
                WHERE id = ?");

            $result = $stmt->execute(array(
                $latitude,
                $longitude,
                $name,
                $address,
                $location_type,
                $rating_level,
                $categories,
                $review,
                $description,
                $tags,
                $article_cid,
                $urlLabel,
                $url,
                $photos,
                $date,
                $markerColor,
                $related_articles,
                $highlights,
                $id
            ));

            if ($result) {
                // 清除足迹缓存
                $this->clearFootprintCache();

                $this->response->throwJson(array(
                    'success' => true,
                    'message' => '足迹更新成功'
                ));
            } else {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '足迹不存在或更新失败'
                ));
            }
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '更新失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 获取关联文章信息
     *
     * @access public
     * @return void
     */
    public function getRelatedArticlesInfo()
    {
        $related_articles = $this->request->get('related_articles');
        
        if (empty($related_articles)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '关联文章不能为空'
            ));
        }

        try {
            $result = MyTrack_Plugin::getRelatedArticlesInfo($related_articles);
            
            $this->response->throwJson(array(
                'success' => true,
                'data' => $result
            ));
        } catch (Exception $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '获取关联文章信息失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 批量删除足迹
     *
     * @access public
     * @return void
     */
    public function batchDelete()
    {
        $ids = $this->request->filter('int')->getArray('footprint');

        if (empty($ids)) {
            $rawIds = $this->request->get('footprint');
            if (!empty($rawIds)) {
                $ids = is_array($rawIds) ? $rawIds : array($rawIds);
                $ids = array_map('intval', $ids);
            }
        }

        if (empty($ids) || !is_array($ids)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '请选择要删除的足迹'
            ));
        }

        $ids = array_filter($ids, function($id) {
            return is_numeric($id) && $id > 0;
        });

        if (empty($ids)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '无效的足迹ID'
            ));
        }

        try {
            $placeholders = implode(',', array_fill(0, count($ids), '?'));
            $stmt = $this->db->prepare("DELETE FROM plugin_track_footprint WHERE id IN ($placeholders)");
            $result = $stmt->execute($ids);

            if ($result) {
                $this->clearFootprintCache();

                $this->response->throwJson(array(
                    'success' => true,
                    'message' => '足迹删除成功'
                ));
            } else {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '删除失败，请检查足迹是否存在'
                ));
            }
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '删除失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 删除足迹
     *
     * @access public
     * @return void
     */
    public function delete()
    {
        $id = $this->request->get('id');

        if (empty($id)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => 'ID不能为空'
            ));
        }

        try {
            $stmt = $this->db->prepare("DELETE FROM plugin_track_footprint WHERE id = ?");
            $result = $stmt->execute(array($id));

            if ($result) {
                $this->clearFootprintCache();

                $this->response->throwJson(array(
                    'success' => true,
                    'message' => '足迹删除成功'
                ));
            } else {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '足迹不存在或删除失败'
                ));
            }
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '删除失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 获取单个足迹
     *
     * @access public
     * @return void
     */
    public function get()
    {
        $id = $this->request->get('id');

        if (empty($id)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => 'ID不能为空'
            ));
        }

        try {
            $stmt = $this->db->prepare("SELECT * FROM plugin_track_footprint WHERE id = ?");
            $stmt->execute(array($id));
            $footprint = $stmt->fetch(PDO::FETCH_ASSOC);

            if ($footprint) {
                if (!empty($footprint['related_articles'])) {
                    $footprint['related_articles_info'] = MyTrack_Plugin::getRelatedArticlesInfo($footprint['related_articles']);
                }
                
                $this->response->throwJson(array(
                    'success' => true,
                    'data' => $footprint
                ));
            } else {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '足迹不存在'
                ));
            }
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '查询失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 通过ID获取单个足迹（公开接口）
     *
     * @access public
     * @return void
     */
    public function getById()
    {
        $id = $this->request->get('id');

        if (empty($id)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => 'ID不能为空'
            ));
        }

        try {
            $stmt = $this->db->prepare("SELECT * FROM plugin_track_footprint WHERE id = ?");
            $stmt->execute(array($id));
            $footprint = $stmt->fetch(PDO::FETCH_ASSOC);

            if ($footprint) {
                if (!empty($footprint['categories'])) {
                    $footprint['categories'] = explode(',', $footprint['categories']);
                } else {
                    $footprint['categories'] = array();
                }

                if (!empty($footprint['highlights'])) {
                    $footprint['highlights'] = explode(',', $footprint['highlights']);
                } else {
                    $footprint['highlights'] = array();
                }

                if (!empty($footprint['article_cid'])) {
                    $articleInfo = MyTrack_Plugin::getArticleInfo($footprint['article_cid']);
                    if (!empty($articleInfo['title']) && empty($footprint['urlLabel'])) {
                        $footprint['urlLabel'] = $articleInfo['title'];
                    }
                    if (!empty($articleInfo['link']) && empty($footprint['url'])) {
                        $footprint['url'] = $articleInfo['link'];
                    }
                }
                
                if (!empty($footprint['related_articles'])) {
                    $footprint['related_articles_info'] = MyTrack_Plugin::getRelatedArticlesInfo($footprint['related_articles']);
                }

                $this->response->throwJson(array(
                    'success' => true,
                    'data' => $footprint
                ));
            } else {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '足迹不存在'
                ));
            }
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '查询失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 获取足迹列表
     *
     * @access public
     * @return void
     */
    public function list()
    {
        $page = $this->request->get('page', 1);
        $size = $this->request->get('size', 10);
        $offset = ($page - 1) * $size;

        try {
            $countStmt = $this->db->query("SELECT COUNT(*) FROM plugin_track_footprint");
            $total = $countStmt->fetchColumn();

            $stmt = $this->db->prepare("SELECT * FROM plugin_track_footprint
                ORDER BY date DESC, created_at DESC
                LIMIT ? OFFSET ?");
            $stmt->execute(array($size, $offset));
            $footprints = $stmt->fetchAll(PDO::FETCH_ASSOC);
            
            foreach ($footprints as &$footprint) {
                if (!empty($footprint['related_articles'])) {
                    $footprint['related_articles_info'] = MyTrack_Plugin::getRelatedArticlesInfo($footprint['related_articles']);
                }
            }

            $this->response->throwJson(array(
                'success' => true,
                'data' => array(
                    'total' => $total,
                    'page' => $page,
                    'size' => $size,
                    'pages' => ceil($total / $size),
                    'items' => $footprints
                )
            ));
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '查询失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 导入足迹
     *
     * @access public
     * @return void
     */
    public function import()
    {
        if (!isset($_FILES['file']) || $_FILES['file']['error'] !== UPLOAD_ERR_OK) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '请上传有效的文件'
            ));
        }

        $file = $_FILES['file'];
        $fileType = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));

        if (!in_array($fileType, array('json'))) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '只支持JSON格式的文件'
            ));
        }

        try {
            $content = file_get_contents($file['tmp_name']);

            $encoding = mb_detect_encoding($content, array('UTF-8', 'GBK', 'GB2312', 'ASCII'), true);
            if ($encoding !== 'UTF-8' && $encoding !== false) {
                $content = mb_convert_encoding($content, 'UTF-8', $encoding);
            }

            $data = json_decode($content, true);
            if (json_last_error() !== JSON_ERROR_NONE) {
                throw new Exception('JSON格式错误: ' . json_last_error_msg());
            }

            if (!is_array($data)) {
                throw new Exception('JSON格式不正确，应该是一个数组');
            }

            $successCount = 0;
            $errorCount = 0;
            $errors = array();

            $this->db->beginTransaction();

            foreach ($data as $index => $item) {
                try {
                    if (empty($item['latitude']) || empty($item['longitude']) || empty($item['name'])) {
                        $errors[] = "第" . ($index + 1) . "行: 缺少经纬度或地点名称";
                        $errorCount++;
                        continue;
                    }

                    // 导入时检查重复数据（基于经纬度）
                    $duplicate = $this->checkDuplicate($item['latitude'], $item['longitude']);
                    if ($duplicate !== false && isset($duplicate['name']) && isset($duplicate['id'])) {
                        $errors[] = "第" . ($index + 1) . "行: 该位置已存在地点：{$duplicate['name']}（ID: {$duplicate['id']}），跳过导入";
                        $errorCount++;
                        continue;
                    }

                    $categories = '';
                    if (isset($item['categories'])) {
                        if (is_array($item['categories'])) {
                            $categories = implode(',', $item['categories']);
                        } else {
                            $categories = $item['categories'];
                        }
                    }
                    
                    $highlights = '';
                    if (isset($item['highlights'])) {
                        if (is_array($item['highlights'])) {
                            $highlights = implode(',', $item['highlights']);
                        } else {
                            $highlights = $item['highlights'];
                        }
                    }

                    $photos = '';
                    if (isset($item['photos'])) {
                        if (is_array($item['photos'])) {
                            $photos = implode(',', $item['photos']);
                        } else {
                            $photos = $item['photos'];
                        }
                    }
                    
                    $related_articles = '';
                    if (isset($item['related_articles'])) {
                        if (is_array($item['related_articles'])) {
                            $related_articles = implode(',', $item['related_articles']);
                        } else {
                            $related_articles = $item['related_articles'];
                        }
                    }

                    $stmt = $this->db->prepare("INSERT INTO plugin_track_footprint
                        (latitude, longitude, name, address, location_type, rating_level, categories, review, 
                         description, tags, article_cid, urlLabel, url, photos, date, markerColor, 
                         related_articles, highlights, created_at, updated_at)
                        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");

                    $result = $stmt->execute(array(
                        $item['latitude'] ?? null,
                        $item['longitude'] ?? null,
                        $item['name'] ?? '',
                        $item['address'] ?? null,
                        $item['location_type'] ?? null,
                        $item['rating_level'] ?? 0,
                        $categories,
                        $item['review'] ?? null,
                        $item['description'] ?? null,
                        $item['tags'] ?? null,
                        $item['article_cid'] ?? null,
                        $item['urlLabel'] ?? null,
                        $item['url'] ?? null,
                        $photos,
                        $item['date'] ?? null,
                        $item['markerColor'] ?? null,
                        $related_articles,
                        $highlights,
                        $item['created_at'] ?? date('Y-m-d H:i:s'),
                        $item['updated_at'] ?? date('Y-m-d H:i:s')
                    ));

                    if ($result) {
                        $successCount++;
                    } else {
                        $errors[] = "第" . ($index + 1) . "行: 插入失败";
                        $errorCount++;
                    }
                } catch (PDOException $e) {
                    $errorCount++;
                    $errors[] = "第" . ($index + 1) . "行: " . $e->getMessage();
                }
            }

            $this->db->commit();

            $this->clearFootprintCache();

            $this->response->throwJson(array(
                'success' => true,
                'message' => "导入完成，成功: {$successCount}，失败: {$errorCount}",
                'data' => array(
                    'success' => $successCount,
                    'error' => $errorCount,
                    'errors' => $errors
                )
            ));
        } catch (Exception $e) {
            $this->db->rollBack();
            
            $this->response->throwJson(array(
                'success' => false,
                'message' => '导入失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 导出足迹
     *
     * @access public
     * @return void
     */
    public function export()
    {
        $format = $this->request->get('format', 'json');

        if (!in_array($format, array('json'))) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '不支持的导出格式'
            ));
        }

        try {
            $stmt = $this->db->query("SELECT 
                id,
                latitude, 
                longitude, 
                name, 
                address, 
                location_type, 
                rating_level, 
                categories, 
                review, 
                description, 
                tags,
                article_cid, 
                urlLabel, 
                url, 
                photos,
                date, 
                markerColor,
                related_articles,
                highlights,
                created_at, 
                updated_at
                FROM plugin_track_footprint 
                ORDER BY date DESC, created_at DESC");
            
            $footprints = $stmt->fetchAll(PDO::FETCH_ASSOC);

            if (empty($footprints)) {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '没有数据可导出'
                ));
            }

            $filename = 'mytrack_footprints_' . date('Ymd_His') . '.json';
            $content = json_encode($footprints, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

            header('Content-Type: application/json');
            header('Content-Disposition: attachment; filename="' . $filename . '"');
            header('Content-Length: ' . strlen($content));
            header('Cache-Control: no-cache, no-store, must-revalidate');
            header('Pragma: no-cache');
            header('Expires: 0');

            echo $content;
            exit;

        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '导出失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 精简导出足迹
     *
     * @access public
     * @return void
     */
    public function exportSimple()
    {
        $format = $this->request->get('format', 'json');

        if (!in_array($format, array('json'))) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '不支持的导出格式'
            ));
        }

        try {
            $stmt = $this->db->query("SELECT 
                name, 
                latitude, 
                longitude, 
                date, 
                url, 
                urlLabel, 
                categories, 
                markerColor, 
                photos,
                related_articles,
                highlights
                FROM plugin_track_footprint 
                ORDER BY date DESC");
            
            $footprints = $stmt->fetchAll(PDO::FETCH_ASSOC);

            if (empty($footprints)) {
                $this->response->throwJson(array(
                    'success' => false,
                    'message' => '没有数据可导出'
                ));
            }

            $locations = array();
            foreach ($footprints as $footprint) {
                $coordinates = $footprint['longitude'] . ',' . $footprint['latitude'];
                
                $categories = array();
                if (!empty($footprint['categories'])) {
                    $categoryArray = explode(',', $footprint['categories']);
                    foreach ($categoryArray as $category) {
                        $category = trim($category);
                        switch($category) {
                            case 'visited':
                                $categories[] = '去过';
                                break;
                            case 'want':
                                $categories[] = '想去';
                                break;
                            case 'plan':
                                $categories[] = '计划';
                                break;
                            default:
                                $categories[] = $category;
                        }
                    }
                }
                
                $highlights = !empty($footprint['highlights']) ? explode(',', $footprint['highlights']) : array();
                $photos = !empty($footprint['photos']) ? explode(',', $footprint['photos']) : array();
                $relatedArticles = !empty($footprint['related_articles']) ? explode(',', $footprint['related_articles']) : array();
                
                $locations[] = array(
                    'name' => $footprint['name'] ?? '',
                    'coordinates' => $coordinates,
                    'date' => $footprint['date'] ?? '',
                    'url' => $footprint['url'] ?? '',
                    'urlLabel' => $footprint['urlLabel'] ?? '',
                    'categories' => $categories,
                    'highlights' => $highlights,
                    'markerColor' => $footprint['markerColor'] ?? '',
                    'photos' => $photos,
                    'relatedArticles' => $relatedArticles
                );
            }

            $exportData = array('locations' => $locations);
            $filename = 'mytrack_simple_' . date('Ymd_His') . '.json';
            $content = json_encode($exportData, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

            header('Content-Type: application/json');
            header('Content-Disposition: attachment; filename="' . $filename . '"');
            header('Content-Length: ' . strlen($content));
            header('Cache-Control: no-cache, no-store, must-revalidate');
            header('Pragma: no-cache');
            header('Expires: 0');

            echo $content;
            exit;

        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '导出失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 获取所有足迹（用于前台地图显示）
     *
     * @access public
     * @return void
     */
    public function getAll()
    {
        try {
            $options = Typecho_Widget::widget('Widget_Options')->plugin('MyTrack');
            $cacheExpire = isset($options->cacheExpire) && is_numeric($options->cacheExpire) && $options->cacheExpire >= 0
                ? intval($options->cacheExpire) * 24 * 60 * 60
                : 7 * 24 * 60 * 60;

            $cacheKey = 'mytrack_footprints_data';

            if ($cacheExpire > 0) {
                $cacheFile = __DIR__ . '/cache/' . md5($cacheKey) . '.cache';

                if (file_exists($cacheFile) && filemtime($cacheFile) + $cacheExpire > time()) {
                    $cachedData = unserialize(file_get_contents($cacheFile));
                    if ($cachedData !== false) {
                        $this->response->throwJson(array(
                            'success' => true,
                            'data' => $cachedData,
                            'from_cache' => true
                        ));
                        return;
                    }
                }
            }

            $stmt = $this->db->query("SELECT * FROM plugin_track_footprint ORDER BY date ASC, created_at ASC");
            $footprints = $stmt->fetchAll(PDO::FETCH_ASSOC);

            $validFootprints = array_filter($footprints, function($footprint) {
                $longitude = is_numeric($footprint['longitude']) ? floatval($footprint['longitude']) : null;
                $latitude = is_numeric($footprint['latitude']) ? floatval($footprint['latitude']) : null;

                return $longitude !== null && $latitude !== null &&
                       !is_nan($longitude) && !is_nan($latitude) &&
                       $longitude >= -180 && $longitude <= 180 &&
                       $latitude >= -90 && $latitude <= 90;
            });

            $validFootprints = array_values($validFootprints);
            
            foreach ($validFootprints as &$footprint) {
                if (!empty($footprint['related_articles'])) {
                    $footprint['related_articles_info'] = MyTrack_Plugin::getRelatedArticlesInfo($footprint['related_articles']);
                }
            }

            if ($cacheExpire > 0) {
                $cacheDir = __DIR__ . '/cache';
                if (!is_dir($cacheDir)) {
                    mkdir($cacheDir, 0755, true);
                }

                $cacheFile = $cacheDir . '/' . md5($cacheKey) . '.cache';
                file_put_contents($cacheFile, serialize($validFootprints));
            }

            $this->response->throwJson(array(
                'success' => true,
                'data' => $validFootprints,
                'from_cache' => false
            ));
        } catch (PDOException $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '查询失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 获取文章图片
     *
     * @access public
     * @return void
     */
    public function getArticleImages()
    {
        $article_cid = $this->request->get('article_cid');

        if (empty($article_cid)) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '文章CID不能为空'
            ));
        }

        try {
            $articleInfo = MyTrack_Plugin::getArticleInfo($article_cid);

            if (!empty($articleInfo)) {
                $response = array(
                    'success' => true,
                    'message' => '获取文章信息成功',
                    'images' => $articleInfo['images'] ?? array(),
                    'text' => $articleInfo['text'] ?? ''
                );

                if (!empty($articleInfo['title'])) {
                    $response['title'] = $articleInfo['title'];
                }

                if (!empty($articleInfo['link'])) {
                    $response['link'] = $articleInfo['link'];
                }

                if (!empty($articleInfo['tags'])) {
                    $response['tags'] = $articleInfo['tags'];
                }

                if (!empty($articleInfo['created'])) {
                    $response['created'] = $articleInfo['created'];
                }

                $this->response->throwJson($response);
            } else {
                $this->response->throwJson(array(
                    'success' => true,
                    'message' => '该文章中没有找到内容',
                    'images' => array(),
                    'text' => ''
                ));
            }
        } catch (Exception $e) {
            $this->response->throwJson(array(
                'success' => false,
                'message' => '获取文章信息失败: ' . $e->getMessage()
            ));
        }
    }

    /**
     * 清除足迹缓存
     *
     * @access private
     * @return void
     */
    private function clearFootprintCache()
    {
        try {
            $cacheDir = __DIR__ . '/cache';

            if (!is_dir($cacheDir)) {
                return;
            }

            $files = glob($cacheDir . '/*.cache');
            foreach ($files as $file) {
                if (is_file($file)) {
                    unlink($file);
                }
            }
        } catch (Exception $e) {
            error_log('清除MyTrack缓存失败: ' . $e->getMessage());
        }
    }
}