<?php
/**
 * 🍳 菜谱API接口 - 静态接口（只读）
 * 
 * 独立API文件，直接访问: /api/api.php?act=xxx
 * 动态接口: /api/api_action.php?act=xxx
 * 管理页面: /api/
 * 
 * 性能优化：支持文件缓存，减少数据库查询
 * 格式支持：JSON、Gzip、MessagePack、CBOR
 */

$startTime = microtime(true);

require '../zb_system/function/c_system_base.php';
$zbp->Load();

require_once 'cache.php';
require_once 'response.php';

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
header('Cache-Control: public, max-age=300');
header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 300) . ' GMT');

$act = strtolower(trim($_GET['act'] ?? 'index'));
$type = strtolower(trim($_GET['type'] ?? 'recipe'));
$format = ApiResponse::getFormat();

$allowedTypes = array('recipe', 'ingredient');
if (!in_array($type, $allowedTypes)) {
    $type = 'recipe';
}

increment_api_request($act);

if (rand(1, 200) === 1) {
    ApiCache::cleanExpired();
}

function increment_api_request($api) {
    $cacheDir = dirname(__FILE__) . '/cache/stats/';
    if (!is_dir($cacheDir)) {
        @mkdir($cacheDir, 0755, true);
    }
    
    $file = $cacheDir . 'request_stats.json';
    $data = array(
        'total' => 0,
        'today' => 0,
        'today_date' => date('Y-m-d'),
        'apis' => array(),
        'hourly' => array(),
        'start_date' => date('Y-m-d')
    );
    
    if (file_exists($file)) {
        $content = file_get_contents($file);
        $loaded = json_decode($content, true);
        if (is_array($loaded)) {
            $data = $loaded;
        }
    }
    
    $today = date('Y-m-d');
    $hour = date('H');
    
    if ($data['today_date'] !== $today) {
        $data['today'] = 0;
        $data['today_date'] = $today;
        $data['hourly'] = array();
    }
    
    $data['total']++;
    $data['today']++;
    $data['apis'][$api] = isset($data['apis'][$api]) ? $data['apis'][$api] + 1 : 1;
    $data['hourly'][$hour] = isset($data['hourly'][$hour]) ? $data['hourly'][$hour] + 1 : 1;
    
    file_put_contents($file, json_encode($data, JSON_UNESCAPED_UNICODE));
}

$result = array();

$cacheableActs = array('list', 'detail', 'full', 'ingredients', 'ingredient_detail', 'search', 'categories', 'tags', 'stats', 'query', 'filter', 'unified_list', 'unified_detail', 'unified_search', 'unified_hot');

$forceRefresh = isset($_GET['_refresh']) && $_GET['_refresh'] === '1';
$staleMode = isset($_GET['_stale']) && $_GET['_stale'] === '1';

if (in_array($act, $cacheableActs) && !$forceRefresh) {
    $cacheParams = $_GET;
    unset($cacheParams['act']);
    unset($cacheParams['_refresh']);
    unset($cacheParams['_stale']);
    unset($cacheParams['_format']);
    unset($cacheParams['_pretty']);
    
    $cachedResult = ApiCache::get($act, $cacheParams);
    if ($cachedResult !== null) {
        header('X-Cache: HIT');
        header('X-Cache-TTL: ' . ApiCache::getTTL($act));
        $cachedResult['_cached'] = true;
        $cachedResult['_cache_age'] = ApiCache::getCacheAge($act, $cacheParams);
        $cachedResult['_query_time'] = round((microtime(true) - $startTime) * 1000, 2) . 'ms';
        ApiResponse::output($cachedResult, $format);
        exit;
    }
    
    if ($staleMode || isset($_SERVER['HTTP_X_STALE_CACHE'])) {
        $staleResult = ApiCache::getStale($act, $cacheParams);
        if ($staleResult !== null) {
            header('X-Cache: STALE');
            header('X-Cache-Expired: true');
            $staleResult['_cached'] = true;
            $staleResult['_stale'] = true;
            $staleResult['_cache_age'] = ApiCache::getCacheAge($act, $cacheParams);
            $staleResult['_query_time'] = round((microtime(true) - $startTime) * 1000, 2) . 'ms';
            ApiResponse::output($staleResult, $format);
            exit;
        }
    }
}

header('X-Cache: MISS');

switch ($act) {
    case 'list':
        $result = recipe_list();
        break;
    case 'detail':
        $result = recipe_detail();
        break;
    case 'full':
        $result = recipe_full();
        break;
    case 'ingredients':
        $result = ingredient_list();
        break;
    case 'ingredient_detail':
        $result = ingredient_detail();
        break;
    case 'search':
        $result = recipe_search();
        break;
    case 'categories':
        $result = category_list();
        break;
    case 'tags':
        $result = tag_list();
        break;
    case 'stats':
        $result = site_stats();
        break;
    case 'query':
        $result = advanced_query();
        break;
    case 'filter':
        $result = field_filter();
        break;
    case 'unified_list':
        $result = get_unified_list($type);
        break;
    case 'unified_detail':
        $result = get_unified_detail($type);
        break;
    case 'unified_search':
        $result = get_unified_search($type);
        break;
    case 'unified_hot':
        $result = get_unified_hot($type);
        break;
    case 'index':
    default:
        $result = array(
            'code' => 200,
            'message' => '🍳 菜谱API服务正常运行',
            'data' => array(
                'version' => '1.26.0',
                'endpoints' => array(
                    'list' => '?act=list',
                    'detail' => '?act=detail&id=1',
                    'full' => '?act=full&id=1',
                    'ingredients' => '?act=ingredients',
                    'ingredient_detail' => '?act=ingredient_detail&id=1',
                    'search' => '?act=search&keyword=苹果',
                    'categories' => '?act=categories',
                    'tags' => '?act=tags',
                    'stats' => '?act=stats'
                ),
                'related_apis' => array(
                    'what_to_eat' => 'api_what_to_eat.php',
                    'action' => 'api_action.php',
                    'feed' => 'api_feed.php',
                    'unified' => 'api_unified.php'
                ),
                'doc_url' => $zbp->host . 'api/'
            )
        );
        break;
}

if (in_array($act, $cacheableActs) && $result['code'] === 200) {
    $cacheParams = $_GET;
    unset($cacheParams['act']);
    unset($cacheParams['_format']);
    unset($cacheParams['_pretty']);
    ApiCache::set($act, $cacheParams, $result);
}

$result['_cached'] = false;
$result['_query_time'] = round((microtime(true) - $startTime) * 1000, 2) . 'ms';

ApiResponse::output($result, $format);
exit;

// ==================== API函数 ====================

/**
 * 获取菜谱列表
 */
function recipe_list() {
    global $zbp;
    
    $page = (int) ($_GET['page'] ?? 1);
    $limit = (int) ($_GET['limit'] ?? 20);
    $cateId = (int) ($_GET['cate_id'] ?? 0);
    $tagId = (int) ($_GET['tag_id'] ?? 0);
    $search = trim($_GET['search'] ?? '');
    $userId = trim($_GET['user_id'] ?? '');
    $usePreference = isset($_GET['use_preference']) && $_GET['use_preference'] === 'true';
    
    if ($limit > 100) $limit = 100;
    if ($limit < 1) $limit = 20;
    if ($page < 1) $page = 1;
    
    $preferredTags = array();
    $preferredCategories = array();
    $blockedAllergens = array();
    
    if ($usePreference && !empty($userId)) {
        $preference = load_user_preference_data($userId);
        $preferredTags = $preference['preferred_tags'] ?? array();
        $preferredCategories = $preference['preferred_categories'] ?? array();
        $blockedAllergens = $preference['blocked_allergens'] ?? array();
    }
    
    if (isset($_GET['preferred_tags'])) {
        $preferredTags = array_map('intval', explode(',', $_GET['preferred_tags']));
    }
    if (isset($_GET['preferred_categories'])) {
        $preferredCategories = array_map('intval', explode(',', $_GET['preferred_categories']));
    }
    
    $tablePost = $zbp->db->dbpre . 'post';
    $tableCategory = $zbp->db->dbpre . 'category';
    $offset = ($page - 1) * $limit;
    
    $whereSql = "WHERE p.log_Type = 0 AND p.log_Status = 0";
    
    if ($cateId > 0) {
        $whereSql .= " AND p.log_CateID = $cateId";
    } elseif (!empty($preferredCategories)) {
        $cateList = implode(',', $preferredCategories);
        $whereSql .= " AND p.log_CateID IN ($cateList)";
    }
    
    if ($tagId > 0) {
        $whereSql .= " AND p.log_Tag LIKE '%{$tagId}%'";
    } elseif (!empty($preferredTags)) {
        $tagConditions = array();
        foreach ($preferredTags as $pt) {
            $tagConditions[] = "p.log_Tag LIKE '%{$pt}%'";
        }
        $whereSql .= " AND (" . implode(' OR ', $tagConditions) . ")";
    }
    
    if (!empty($search)) {
        $search = htmlspecialchars($search);
        $whereSql .= " AND (p.log_Content LIKE '%$search%' OR p.log_Intro LIKE '%$search%' OR p.log_Title LIKE '%$search%')";
    }
    
    $countSql = "SELECT COUNT(*) as total FROM $tablePost p $whereSql";
    $countResult = $zbp->db->Query($countSql);
    $total = (int) ($countResult[0]['total'] ?? 0);
    
    $selectFields = "p.log_ID, p.log_Title, p.log_Intro, p.log_CateID, p.log_Tag, p.log_PostTime, p.log_ViewNums, p.log_CommNums, p.log_Meta, p.log_Content, c.cate_Name";
    $sql = "SELECT $selectFields FROM $tablePost p LEFT JOIN $tableCategory c ON p.log_CateID = c.cate_ID $whereSql ORDER BY p.log_PostTime DESC LIMIT $offset, $limit";
    $results = $zbp->db->Query($sql);
    
    $list = array();
    foreach ($results as $row) {
        $meta = json_decode($row['log_Meta'] ?? '', true) ?: array();
        
        $list[] = array(
            'id' => (int) $row['log_ID'],
            'title' => $row['log_Title'],
            'intro' => $row['log_Intro'] ?? '',
            'category_id' => (int) ($row['log_CateID'] ?? 0),
            'category_name' => $row['cate_Name'] ?? '',
            'tags' => parse_tags($row['log_Tag'] ?? ''),
            'create_time' => strtotime($row['log_PostTime'] ?? 'now'),
            'view_count' => (int) ($row['log_ViewNums'] ?? 0),
            'comment_count' => (int) ($row['log_CommNums'] ?? 0),
            'meta' => $meta,
            'url' => '?id=' . $row['log_ID'],
            'cover' => extract_cover_from_content($row['log_Content'] ?? '')
        );
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'list' => $list,
            'page' => $page,
            'limit' => $limit,
            'total' => $total,
            'filter' => array(
                'preferred_tags' => $preferredTags,
                'preferred_categories' => $preferredCategories
            )
        )
    );
}

function load_user_preference_data($userId) {
    $cacheDir = dirname(__FILE__) . '/cache/preference/';
    $file = $cacheDir . 'pref_' . md5($userId) . '.json';
    
    if (file_exists($file)) {
        $content = file_get_contents($file);
        $data = json_decode($content, true);
        return is_array($data) ? $data : array(
            'preferred_tags' => array(),
            'preferred_categories' => array(),
            'blocked_allergens' => array()
        );
    }
    return array(
        'preferred_tags' => array(),
        'preferred_categories' => array(),
        'blocked_allergens' => array()
    );
}

/**
 * 获取菜谱详情
 */
function recipe_detail() {
    global $zbp;
    
    $id = (int) ($_GET['id'] ?? 0);
    if ($id <= 0) {
        return array('code' => 400, 'message' => '❌ 缺少菜谱ID参数');
    }
    
    $post = $zbp->GetPostByID($id);
    if (!$post || $post->ID == 0) {
        return array('code' => 404, 'message' => '❌ 菜谱不存在');
    }
    
    // 增加浏览量
    if (isset($_GET['viewnums']) && $_GET['viewnums'] === 'true') {
        $post->ViewNums += 1;
        $sql = $zbp->db->sql->Update($zbp->table['Post'], array('log_ViewNums' => $post->ViewNums), array(array('=', 'log_ID', $post->ID)));
        $zbp->db->Update($sql);
    }
    
    $meta = json_decode($post->Meta, true) ?: array();
    $ingredients = get_recipe_ingredients($id);
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'id' => $post->ID,
            'title' => $post->Title,
            'content' => $post->Content,
            'intro' => $post->Intro,
            'category_id' => $post->CategoryID,
            'category_name' => $post->Category ? $post->Category->Name : '',
            'tags' => parse_tags($post->Tag),
            'create_time' => strtotime($post->PostTime),
            'update_time' => strtotime($post->UpdateTime),
            'view_count' => $post->ViewNums,
            'comment_count' => $post->CommNums,
            'meta' => $meta,
            'ingredients' => $ingredients,
            'url' => '?' . parse_url($post->Url, PHP_URL_QUERY),
            'cover' => extract_cover($post),
            'author' => $post->Author ? array(
                'id' => $post->Author->ID,
                'name' => $post->Author->Name,
                'avatar' => $post->Author->Avatar
            ) : null
        )
    );
}

/**
 * 获取菜谱完整信息
 * 包含：基本信息、食材详情、营养、统计、标签、分类层级等所有信息
 * @return array 完整菜谱信息
 */
function recipe_full() {
    global $zbp;
    
    $id = (int) ($_GET['id'] ?? 0);
    if ($id <= 0) {
        return array('code' => 400, 'message' => '缺少菜谱ID参数');
    }
    
    $tablePost = $zbp->db->dbpre . 'post';
    $tableCategory = $zbp->db->dbpre . 'category';
    $tableMember = $zbp->db->dbpre . 'member';
    $tablePostStat = $zbp->db->dbpre . 'post_stat';
    $tableRecipeIngredient = $zbp->db->dbpre . 'recipe_ingredient';
    $tableIngredientDetail = $zbp->db->dbpre . 'ingredient_detail';
    $tableRecipeNutrition = $zbp->db->dbpre . 'recipe_nutrition';
    $tableTag = $zbp->db->dbpre . 'tag';
    $tableRecipeIdMap = $zbp->db->dbpre . 'recipe_id_map';
    
    $sql = "SELECT 
                p.log_ID, p.log_Title, p.log_Content, p.log_Intro, p.log_Tag,
                p.log_CateID, p.log_AuthorID, p.log_PostTime, p.log_UpdateTime,
                p.log_ViewNums, p.log_CommNums, p.log_Meta, p.log_Status,
                c.cate_ID as cate_id, c.cate_Name as cate_name, c.cate_Alias as cate_alias,
                c.cate_ParentID as cate_parent_id,
                m.mem_ID as author_id, m.mem_Name as author_name, m.mem_Alias as author_alias,
                m.mem_Email as author_email, m.mem_HomePage as author_homepage,
                COALESCE(s.like_nums, 0) as like_nums,
                COALESCE(s.recommend_nums, 0) as recommend_nums,
                COALESCE(s.recommend_score, 0) as recommend_score
            FROM $tablePost p
            LEFT JOIN $tableCategory c ON p.log_CateID = c.cate_ID
            LEFT JOIN $tableMember m ON p.log_AuthorID = m.mem_ID
            LEFT JOIN $tablePostStat s ON p.log_ID = s.log_id
            WHERE p.log_ID = $id AND p.log_Type = 0";
    
    $result = $zbp->db->Query($sql);
    
    if (empty($result)) {
        return array('code' => 404, 'message' => '菜谱不存在');
    }
    
    $row = $result[0];
    
    $picId = null;
    $idMapSql = "SELECT old_id FROM $tableRecipeIdMap WHERE new_log_id = $id LIMIT 1";
    $idMapResult = $zbp->db->Query($idMapSql);
    if (!empty($idMapResult)) {
        $picId = (int) $idMapResult[0]['old_id'];
    }
    
    $meta = json_decode($row['log_Meta'] ?? '', true) ?: array();
    
    $tagIds = parse_tags($row['log_Tag'] ?? '');
    $tags = array();
    if (!empty($tagIds)) {
        $tagIdList = implode(',', array_filter($tagIds, 'is_numeric'));
        if (!empty($tagIdList)) {
            $tagSql = "SELECT tag_ID, tag_Name, tag_Alias, tag_Count FROM $tableTag WHERE tag_ID IN ($tagIdList)";
            $tagResults = $zbp->db->Query($tagSql);
            foreach ($tagResults as $tagRow) {
                $tags[] = array(
                    'id' => (int) $tagRow['tag_ID'],
                    'name' => $tagRow['tag_Name'],
                    'alias' => $tagRow['tag_Alias'] ?? '',
                    'count' => (int) ($tagRow['tag_Count'] ?? 0)
                );
            }
        }
    }
    
    $ingredientSql = "SELECT 
                        ri.ingredient_id, ri.log_id, ri.type, ri.name, ri.amount, ri.sort, ri.detail_id,
                        id.alias, id.usage_tip, id.introduction, id.nutrition, 
                        id.guidance, id.effect, id.other, id.allergen, id.allergen_type
                      FROM $tableRecipeIngredient ri
                      LEFT JOIN $tableIngredientDetail id ON ri.detail_id = id.ingredient_id
                      WHERE ri.log_id = $id
                      ORDER BY ri.sort ASC";
    $ingredientResults = $zbp->db->Query($ingredientSql);
    
    $ingredients = array(
        'main' => array(),
        'auxiliary' => array(),
        'seasoning' => array()
    );
    $allergens = array();
    
    foreach ($ingredientResults as $ingRow) {
        $ingType = $ingRow['type'] ?? 'main';
        $ingredientData = array(
            'ingredient_id' => (int) ($ingRow['ingredient_id'] ?? 0),
            'name' => $ingRow['name'],
            'amount' => $ingRow['amount'] ?? '',
            'sort' => (int) ($ingRow['sort'] ?? 0),
            'detail_id' => (int) ($ingRow['detail_id'] ?? 0),
            'detail' => null
        );
        
        if (!empty($ingRow['detail_id'])) {
            $ingredientData['detail'] = array(
                'alias' => json_decode($ingRow['alias'] ?? '[]', true),
                'usage_tip' => json_decode($ingRow['usage_tip'] ?? '[]', true),
                'introduction' => $ingRow['introduction'] ?? '',
                'nutrition' => $ingRow['nutrition'] ?? '',
                'guidance' => $ingRow['guidance'] ?? '',
                'effect' => $ingRow['effect'] ?? '',
                'other' => $ingRow['other'] ?? '',
                'allergen' => json_decode($ingRow['allergen'] ?? '[]', true),
                'allergen_type' => json_decode($ingRow['allergen_type'] ?? '[]', true)
            );
            
            if (!empty($ingRow['allergen'])) {
                $allergenList = json_decode($ingRow['allergen'], true);
                if (is_array($allergenList)) {
                    $allergens = array_merge($allergens, $allergenList);
                }
            }
        }
        
        if (isset($ingredients[$ingType])) {
            $ingredients[$ingType][] = $ingredientData;
        } else {
            $ingredients['main'][] = $ingredientData;
        }
    }
    $allergens = array_values(array_unique($allergens));
    
    $nutritionSql = "SELECT name, value, unit FROM $tableRecipeNutrition WHERE log_id = $id";
    $nutritionResults = $zbp->db->Query($nutritionSql);
    $nutrition = array();
    foreach ($nutritionResults as $nutRow) {
        $nutrition[] = array(
            'name' => $nutRow['name'],
            'value' => (float) $nutRow['value'],
            'unit' => $nutRow['unit']
        );
    }
    
    $categoryHierarchy = array();
    if (!empty($row['cate_id'])) {
        $categoryHierarchy[] = array(
            'id' => (int) $row['cate_id'],
            'name' => $row['cate_name'] ?? '',
            'alias' => $row['cate_alias'] ?? '',
            'level' => 1
        );
        
        if (!empty($row['cate_parent_id'])) {
            $parentSql = "SELECT cate_ID, cate_Name, cate_Alias, cate_ParentID FROM $tableCategory WHERE cate_ID = " . (int) $row['cate_parent_id'];
            $parentResult = $zbp->db->Query($parentSql);
            if (!empty($parentResult)) {
                $parent = $parentResult[0];
                $categoryHierarchy[] = array(
                    'id' => (int) $parent['cate_ID'],
                    'name' => $parent['cate_Name'] ?? '',
                    'alias' => $parent['cate_Alias'] ?? '',
                    'level' => 2
                );
                
                if (!empty($parent['cate_ParentID'])) {
                    $grandparentSql = "SELECT cate_ID, cate_Name, cate_Alias FROM $tableCategory WHERE cate_ID = " . (int) $parent['cate_ParentID'];
                    $grandparentResult = $zbp->db->Query($grandparentSql);
                    if (!empty($grandparentResult)) {
                        $grandparent = $grandparentResult[0];
                        $categoryHierarchy[] = array(
                            'id' => (int) $grandparent['cate_ID'],
                            'name' => $grandparent['cate_Name'] ?? '',
                            'alias' => $grandparent['cate_Alias'] ?? '',
                            'level' => 3
                        );
                    }
                }
            }
        }
    }
    
    $cover = '';
    if (preg_match('/<img[^>]+src=["\']([^"\']+)["\']/i', $row['log_Content'] ?? '', $matches)) {
        $cover = $matches[1];
    }
    
    if (isset($_GET['viewnums']) && $_GET['viewnums'] === 'true') {
        $newViews = ((int) $row['log_ViewNums']) + 1;
        $updateSql = "UPDATE $tablePost SET log_ViewNums = $newViews WHERE log_ID = $id";
        $zbp->db->Query($updateSql);
        $row['log_ViewNums'] = $newViews;
    }
    
    $recipeCode = 'CP' . str_pad($id, 6, '0', STR_PAD_LEFT);
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'id' => (int) $row['log_ID'],
            'code' => $recipeCode,
            'pic_id' => $picId,
            'title' => $row['log_Title'],
            'intro' => $row['log_Intro'] ?? '',
            'content' => $row['log_Content'],
            'cover' => $cover,
            'status' => (int) ($row['log_Status'] ?? 0),
            'create_time' => strtotime($row['log_PostTime']),
            'update_time' => strtotime($row['log_UpdateTime']),
            'category' => array(
                'id' => (int) ($row['cate_id'] ?? 0),
                'name' => $row['cate_name'] ?? '',
                'alias' => $row['cate_alias'] ?? '',
                'hierarchy' => array_reverse($categoryHierarchy)
            ),
            'author' => array(
                'id' => (int) ($row['author_id'] ?? 0),
                'name' => $row['author_name'] ?? '',
                'alias' => $row['author_alias'] ?? '',
                'email' => $row['author_email'] ?? '',
                'homepage' => $row['author_homepage'] ?? ''
            ),
            'tags' => $tags,
            'ingredients' => $ingredients,
            'allergens' => $allergens,
            'nutrition' => $nutrition,
            'statistics' => array(
                'view_count' => (int) ($row['log_ViewNums'] ?? 0),
                'comment_count' => (int) ($row['log_CommNums'] ?? 0),
                'like_count' => (int) ($row['like_nums'] ?? 0),
                'recommend_count' => (int) ($row['recommend_nums'] ?? 0),
                'recommend_score' => (float) ($row['recommend_score'] ?? 0)
            ),
            'meta' => array(
                'indices' => $meta['indices'] ?? array(),
                'process' => $meta['process'] ?? '',
                'taste' => $meta['taste'] ?? '',
                'eating_time' => $meta['eating_time'] ?? array()
            )
        )
    );
}

/**
 * 获取食材列表
 */
function ingredient_list() {
    global $zbp;
    
    $page = (int) ($_GET['page'] ?? 1);
    $limit = (int) ($_GET['limit'] ?? 20);
    $cateId = (int) ($_GET['cate_id'] ?? 0);
    $search = trim($_GET['search'] ?? '');
    $author = trim($_GET['author'] ?? '');
    $userId = trim($_GET['user_id'] ?? '');
    $usePreference = isset($_GET['use_preference']) && $_GET['use_preference'] === 'true';
    
    if ($limit > 100) $limit = 100;
    if ($limit < 1) $limit = 20;
    if ($page < 1) $page = 1;
    
    $blockedAllergens = array();
    if (isset($_GET['blocked_allergens'])) {
        $blockedAllergens = array_filter(explode(',', $_GET['blocked_allergens']));
    } elseif ($usePreference && !empty($userId)) {
        $preference = load_user_preference_data($userId);
        $blockedAllergens = $preference['blocked_allergens'] ?? array();
    }
    
    $table = $zbp->db->dbpre . 'ingredient_detail';
    $offset = ($page - 1) * $limit;
    
    $whereClauses = array();
    if (!empty($search)) {
        $search = htmlspecialchars($search);
        $whereClauses[] = "name LIKE '%$search%'";
    }
    if ($cateId > 0) {
        $whereClauses[] = "cate_ID = $cateId";
    }
    if (!empty($author)) {
        $author = htmlspecialchars($author);
        $whereClauses[] = "author = '$author'";
    }
    
    $whereSql = empty($whereClauses) ? '' : 'WHERE ' . implode(' AND ', $whereClauses);
    
    $countSql = "SELECT COUNT(*) as total FROM $table $whereSql";
    $countResult = $zbp->db->Query($countSql);
    $total = (int) ($countResult[0]['total'] ?? 0);
    
    $sql = "SELECT ingredient_id, name, view_count, allergen, allergen_type FROM $table $whereSql ORDER BY ingredient_id ASC LIMIT $offset, $limit";
    $results = $zbp->db->Query($sql);
    
    $list = array();
    $filtered = 0;
    foreach ($results as $row) {
        $allergenType = json_decode($row['allergen_type'] ?? '[]', true);
        
        if (!empty($blockedAllergens) && !empty($allergenType)) {
            $hasBlocked = false;
            foreach ($allergenType as $type) {
                if (in_array($type, $blockedAllergens)) {
                    $hasBlocked = true;
                    $filtered++;
                    break;
                }
            }
            if ($hasBlocked) {
                continue;
            }
        }
        
        $item = array(
            'id' => (int) $row['ingredient_id'],
            'name' => $row['name'],
            'view_count' => (int) ($row['view_count'] ?? 0),
            'create_time' => time()
        );
        
        $allergen = json_decode($row['allergen'] ?? '[]', true);
        if (!empty($allergen)) {
            $item['allergen'] = $allergen;
            $item['allergen_type'] = $allergenType;
        }
        
        $list[] = $item;
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'list' => $list,
            'page' => $page,
            'limit' => $limit,
            'total' => $total,
            'filtered' => $filtered,
            'blocked_allergens' => $blockedAllergens
        )
    );
}

/**
 * 获取食材详情
 */
function ingredient_detail() {
    global $zbp;
    
    $id = (int) ($_GET['id'] ?? 0);
    if ($id <= 0) {
        return array('code' => 400, 'message' => '❌ 缺少食材ID参数');
    }
    
    $table = $zbp->db->dbpre . 'ingredient_detail';
    $sql = "SELECT * FROM $table WHERE ingredient_id = $id LIMIT 1";
    $result = $zbp->db->Query($sql);
    
    if (empty($result)) {
        return array('code' => 404, 'message' => '❌ 食材不存在');
    }
    
    $row = $result[0];
    
    $statTable = $zbp->db->dbpre . 'ingredient_stat';
    $statSql = "SELECT * FROM $statTable WHERE ingredient_id = $id LIMIT 1";
    $statResult = $zbp->db->Query($statSql);
    $likeCount = 0;
    $recommendCount = 0;
    $recommendScore = 0;
    if (!empty($statResult)) {
        $likeCount = (int) ($statResult[0]['like_count'] ?? 0);
        $recommendCount = (int) ($statResult[0]['recommend_count'] ?? 0);
        $recommendScore = (float) ($statResult[0]['recommend_score'] ?? 0);
    }
    
    $relatedRecipes = array();
    $riTable = $zbp->db->dbpre . 'recipe_ingredient';
    $recipeSql = "SELECT DISTINCT log_id FROM $riTable WHERE detail_id = $id LIMIT 10";
    $recipeResults = $zbp->db->Query($recipeSql);
    foreach ($recipeResults as $recipeRow) {
        $logId = (int) $recipeRow['log_id'];
        $post = $zbp->GetPostByID($logId);
        if ($post && $post->ID > 0) {
            $relatedRecipes[] = array(
                'id' => $post->ID,
                'title' => $post->Title,
                'url' => '?' . parse_url($post->Url, PHP_URL_QUERY)
            );
        }
    }
    
    $allergen = json_decode($row['allergen'] ?? '[]', true);
    $allergenType = json_decode($row['allergen_type'] ?? '[]', true);
    
    $data = array(
        'id' => (int) $row['ingredient_id'],
        'name' => $row['name'],
        'alias' => json_decode($row['alias'] ?? '[]', true),
        'usage_tip' => json_decode($row['usage_tip'] ?? '[]', true),
        'introduction' => $row['introduction'] ?? '',
        'nutrition' => $row['nutrition'] ?? '',
        'guidance' => $row['guidance'] ?? '',
        'effect' => $row['effect'] ?? '',
        'other' => $row['other'] ?? '',
        'nutrients' => json_decode($row['nutrients'] ?? '[]', true),
        'view_count' => (int) ($row['view_count'] ?? 0),
        'like_count' => $likeCount,
        'recommend_count' => $recommendCount,
        'recommend_score' => $recommendScore,
        'author' => $row['author'] ?? '系统',
        'cate_id' => (int) ($row['cate_ID'] ?? 0),
        'create_time' => (int) ($row['create_time'] ?? 0),
        'update_time' => (int) ($row['update_time'] ?? 0),
        'related_recipes' => $relatedRecipes
    );
    
    if (!empty($allergen)) {
        $data['allergen'] = $allergen;
        $data['allergen_type'] = $allergenType;
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => $data
    );
}

/**
 * 搜索功能
 */
function recipe_search() {
    global $zbp;
    
    $keyword = trim($_GET['keyword'] ?? '');
    $type = $_GET['type'] ?? 'all';
    $page = (int) ($_GET['page'] ?? 1);
    $limit = (int) ($_GET['limit'] ?? 20);
    
    if (empty($keyword)) {
        return array('code' => 400, 'message' => '❌ 请输入搜索关键词');
    }
    
    if ($limit > 50) $limit = 50;
    if ($page < 1) $page = 1;
    
    $result = array('recipes' => array(), 'ingredients' => array());
    $offset = ($page - 1) * $limit;
    $keyword = htmlspecialchars($keyword);
    
    if ($type == 'all' || $type == 'recipe') {
        $tablePost = $zbp->db->dbpre . 'post';
        $searchSql = "SELECT * FROM $tablePost WHERE log_Type = 0 AND log_Status = 0 AND (log_Content LIKE '%$keyword%' OR log_Intro LIKE '%$keyword%' OR log_Title LIKE '%$keyword%') ORDER BY log_ViewNums DESC LIMIT $offset, $limit";
        $posts = $zbp->db->Query($searchSql);
        
        foreach ($posts as $row) {
            $meta = json_decode($row['log_Meta'] ?? '', true) ?: array();
            $categoryId = (int) ($row['log_CateID'] ?? 0);
            $categoryName = '';
            $cate = $zbp->GetCategoryByID($categoryId);
            if ($cate) {
                $categoryName = $cate->Name;
            }
            $result['recipes'][] = array(
                'id' => (int) $row['log_ID'],
                'title' => $row['log_Title'],
                'intro' => $row['log_Intro'] ?? '',
                'category_name' => $categoryName,
                'view_count' => (int) ($row['log_ViewNums'] ?? 0),
                'url' => '?id=' . $row['log_ID'],
                'cover' => extract_cover_from_content($row['log_Content'] ?? ''),
                'meta' => $meta
            );
        }
    }
    
    if ($type == 'all' || $type == 'ingredient') {
        $table = $zbp->db->dbpre . 'recipe_ingredient';
        $ingredientSql = "SELECT DISTINCT name, ingredient_id FROM $table WHERE name LIKE '%$keyword%' ORDER BY ingredient_id ASC LIMIT $offset, $limit";
        $ingredients = $zbp->db->Query($ingredientSql);
        
        foreach ($ingredients as $row) {
            $result['ingredients'][] = array(
                'id' => (int) $row['ingredient_id'],
                'name' => $row['name']
            );
        }
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'keyword' => $keyword,
            'type' => $type,
            'page' => $page,
            'result' => $result
        )
    );
}

/**
 * 获取分类列表
 */
function category_list() {
    global $zbp;
    
    $type = $_GET['type'] ?? 'recipe';
    $list = array();
    
    if ($type == 'recipe') {
        foreach ($zbp->categories as $cate) {
            if ($cate->ParentID == 0) {
                $children = array();
                foreach ($cate->ChildrenCategories as $child) {
                    $children[] = array(
                        'id' => $child->ID,
                        'name' => $child->Name,
                        'alias' => $child->Alias,
                        'count' => $child->Count
                    );
                }
                $list[] = array(
                    'id' => $cate->ID,
                    'name' => $cate->Name,
                    'alias' => $cate->Alias,
                    'count' => $cate->AllCount,
                    'children' => $children
                );
            }
        }
    } else {
        $table = $zbp->db->dbpre . 'ingredient_detail';
        $sql = "SELECT cate_ID, COUNT(*) as count FROM $table WHERE cate_ID > 0 GROUP BY cate_ID";
        $results = $zbp->db->Query($sql);
        
        foreach ($results as $row) {
            $cate = $zbp->GetCategoryByID($row['cate_ID']);
            if ($cate) {
                $list[] = array(
                    'id' => $cate->ID,
                    'name' => $cate->Name,
                    'alias' => $cate->Alias,
                    'count' => (int) $row['count']
                );
            }
        }
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => $list
    );
}

/**
 * 获取标签列表
 */
function tag_list() {
    global $zbp;
    
    $limit = (int) ($_GET['limit'] ?? 50);
    $list = array();
    
    $tags = $zbp->GetTagList('*', array(array('>', 'tag_Count', 0)), array('tag_Count' => 'DESC'), $limit);
    
    foreach ($tags as $tag) {
        $list[] = array(
            'id' => $tag->ID,
            'name' => $tag->Name,
            'count' => $tag->Count,
            'url' => '?' . parse_url($tag->Url, PHP_URL_QUERY)
        );
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => $list
    );
}

/**
 * 获取统计数据
 */
function site_stats() {
    global $zbp;
    
    $tablePost = $zbp->db->dbpre . 'post';
    $tableRecipeIngredient = $zbp->db->dbpre . 'recipe_ingredient';
    $tableTag = $zbp->db->dbpre . 'tag';
    $tableIngredientDetail = $zbp->db->dbpre . 'ingredient_detail';
    
    $recipeCountResult = $zbp->db->Query("SELECT COUNT(*) as total FROM $tablePost WHERE log_Type = 0 AND log_Status = 0");
    $recipeCount = (int) ($recipeCountResult[0]['total'] ?? 0);
    
    $ingredientCountResult = $zbp->db->Query("SELECT COUNT(*) as total FROM $tableIngredientDetail");
    $ingredientCount = (int) ($ingredientCountResult[0]['total'] ?? 0);
    
    $relationCountResult = $zbp->db->Query("SELECT COUNT(*) as total FROM $tableRecipeIngredient");
    $relationCount = (int) ($relationCountResult[0]['total'] ?? 0);
    
    $categoryCount = count($zbp->categories);
    
    $tagCountResult = $zbp->db->Query("SELECT COUNT(*) as total FROM $tableTag");
    $tagCount = (int) ($tagCountResult[0]['total'] ?? 0);
    
    $recipeViewsResult = $zbp->db->Query("SELECT SUM(log_ViewNums) as total FROM $tablePost WHERE log_Type = 0");
    $recipeViews = (int) ($recipeViewsResult[0]['total'] ?? 0);
    
    $ingredientViewsResult = $zbp->db->Query("SELECT SUM(view_count) as total FROM $tableIngredientDetail");
    $ingredientViews = (int) ($ingredientViewsResult[0]['total'] ?? 0);
    $totalViews = $recipeViews + $ingredientViews;
    
    $hotRecipes = array();
    $hotRecipesSql = "SELECT log_ID, log_Title, log_ViewNums FROM $tablePost WHERE log_Type = 0 AND log_Status = 0 ORDER BY log_ViewNums DESC LIMIT 5";
    $hotRecipesResults = $zbp->db->Query($hotRecipesSql);
    foreach ($hotRecipesResults as $row) {
        $hotRecipes[] = array(
            'id' => (int) $row['log_ID'],
            'title' => $row['log_Title'],
            'view_count' => (int) $row['log_ViewNums'],
            'url' => '?id=' . $row['log_ID']
        );
    }
    
    $hotIngredients = array();
    $hotIngredientsSql = "SELECT ingredient_id, name, view_count FROM $tableIngredientDetail ORDER BY view_count DESC LIMIT 5";
    $ingredients = $zbp->db->Query($hotIngredientsSql);
    foreach ($ingredients as $row) {
        $hotIngredients[] = array(
            'id' => (int) $row['ingredient_id'],
            'name' => $row['name'],
            'view_count' => (int) ($row['view_count'] ?? 0)
        );
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'recipe_count' => $recipeCount,
            'ingredient_count' => $ingredientCount,
            'relation_count' => $relationCount,
            'category_count' => $categoryCount,
            'tag_count' => $tagCount,
            'total_views' => $totalViews,
            'recipe_views' => $recipeViews,
            'ingredient_views' => $ingredientViews,
            'hot_recipes' => $hotRecipes,
            'hot_ingredients' => $hotIngredients
        )
    );
}

// ==================== 辅助函数 ====================

function parse_tags($tagString) {
    global $zbp;
    $tags = array();
    if (preg_match_all('/\{(\d+)\}/', $tagString, $matches)) {
        foreach ($matches[1] as $tagId) {
            $tag = $zbp->GetTagByID($tagId);
            if ($tag && $tag->ID > 0) {
                $tags[] = array('id' => $tag->ID, 'name' => $tag->Name);
            }
        }
    }
    return $tags;
}

function get_recipe_ingredients($recipeId) {
    global $zbp;
    $table = $zbp->db->dbpre . 'recipe_ingredient';
    $sql = "SELECT * FROM $table WHERE log_id = $recipeId";
    $results = $zbp->db->Query($sql);
    
    $ingredients = array();
    foreach ($results as $row) {
        $ingredients[] = array(
            'name' => $row['name'],
            'amount' => $row['amount'] ?? '',
            'unit' => $row['unit'] ?? '',
            'type' => $row['type'] ?? '',
            'detail_id' => (int) ($row['detail_id'] ?? 0)
        );
    }
    return $ingredients;
}

function extract_cover($post) {
    $content = '';
    if (is_object($post)) {
        $content = $post->Content ?? '';
    }
    if (preg_match('/<img[^>]+src=["\']([^"\']+)["\']/i', $content, $matches)) {
        return $matches[1];
    }
    return '';
}

function extract_cover_from_content($content) {
    if (preg_match('/<img[^>]+src=["\']([^"\']+)["\']/i', $content, $matches)) {
        return $matches[1];
    }
    return '';
}

/**
 * 高级查询 - 精确查询和模糊查询
 * 
 * 参数:
 * - module: recipe(菜谱) / ingredient(食材) / category(分类) / tag(标签)
 * - field: 查询字段名
 * - value: 查询值
 * - operator: eq(等于) / like(模糊) / gt(大于) / lt(小于) / gte(大于等于) / lte(小于等于) / in(包含)
 * - fields: 返回字段(逗号分隔)，如 id,title,views
 * - page: 页码
 * - limit: 每页数量
 * - order: 排序字段
 * - sort: asc/desc
 * 
 * 示例:
 * - ?act=query&module=recipe&field=process&value=炒
 * - ?act=query&module=recipe&field=title&value=鸡蛋&operator=like
 * - ?act=query&module=ingredient&field=name&value=番茄&operator=like&fields=id,name
 */
function advanced_query() {
    global $zbp;
    
    $module = strtolower(trim($_GET['module'] ?? 'recipe'));
    $field = trim($_GET['field'] ?? '');
    $value = $_GET['value'] ?? '';
    $operator = strtolower(trim($_GET['operator'] ?? 'eq'));
    $fields = trim($_GET['fields'] ?? '');
    $page = (int) ($_GET['page'] ?? 1);
    $limit = (int) ($_GET['limit'] ?? 20);
    $order = trim($_GET['order'] ?? '');
    $sort = strtolower(trim($_GET['sort'] ?? 'desc'));
    
    if ($limit > 100) $limit = 100;
    if ($limit < 1) $limit = 20;
    if ($page < 1) $page = 1;
    
    $allowedModules = ['recipe', 'ingredient', 'category', 'tag'];
    if (!in_array($module, $allowedModules)) {
        return array('code' => 400, 'message' => '❌ module参数必须是: ' . implode(', ', $allowedModules));
    }
    
    if (empty($field)) {
        return array('code' => 400, 'message' => '❌ 缺少field参数');
    }
    
    $allowedOperators = ['eq', 'like', 'gt', 'lt', 'gte', 'lte', 'in', 'neq'];
    if (!in_array($operator, $allowedOperators)) {
        return array('code' => 400, 'message' => '❌ operator参数必须是: ' . implode(', ', $allowedOperators));
    }
    
    $tableConfig = get_table_config($module);
    if (!$tableConfig) {
        return array('code' => 400, 'message' => '❌ 不支持的模块');
    }
    
    $table = $tableConfig['table'];
    $primaryKey = $tableConfig['primary_key'];
    $allowedFields = $tableConfig['fields'];
    
    if (!in_array($field, $allowedFields)) {
        return array('code' => 400, 'message' => '❌ 不允许查询的字段: ' . $field . '，允许的字段: ' . implode(', ', $allowedFields));
    }
    
    $selectFields = '*';
    if (!empty($fields)) {
        $fieldArray = array_map('trim', explode(',', $fields));
        $validFields = array_intersect($fieldArray, $allowedFields);
        if (!empty($validFields)) {
            if (!in_array($primaryKey, $validFields)) {
                array_unshift($validFields, $primaryKey);
            }
            $selectFields = implode(', ', $validFields);
        }
    }
    
    $whereClause = build_where_clause($field, $value, $operator);
    
    $offset = ($page - 1) * $limit;
    
    $countSql = "SELECT COUNT(*) as total FROM $table WHERE $whereClause";
    $countResult = $zbp->db->Query($countSql);
    $total = (int) ($countResult[0]['total'] ?? 0);
    
    $orderClause = '';
    if (!empty($order) && in_array($order, $allowedFields)) {
        $sortDir = ($sort === 'asc') ? 'ASC' : 'DESC';
        $orderClause = "ORDER BY $order $sortDir";
    } else {
        $orderClause = $tableConfig['default_order'];
    }
    
    $sql = "SELECT $selectFields FROM $table WHERE $whereClause $orderClause LIMIT $offset, $limit";
    $results = $zbp->db->Query($sql);
    
    $list = format_results($results, $module, $fields);
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'module' => $module,
            'query' => array(
                'field' => $field,
                'value' => $value,
                'operator' => $operator
            ),
            'list' => $list,
            'page' => $page,
            'limit' => $limit,
            'total' => $total,
            'total_pages' => ceil($total / $limit)
        )
    );
}

/**
 * 字段筛选 - 获取指定字段的所有值
 * 
 * 参数:
 * - module: recipe(菜谱) / ingredient(食材)
 * - field: 要筛选的字段
 * - distinct: 是否去重(默认true)
 * 
 * 示例:
 * - ?act=filter&module=recipe&field=process
 * - ?act=filter&module=recipe&field=taste
 */
function field_filter() {
    global $zbp;
    
    $module = strtolower(trim($_GET['module'] ?? 'recipe'));
    $field = trim($_GET['field'] ?? '');
    $distinct = ($_GET['distinct'] ?? 'true') === 'true';
    
    $allowedModules = ['recipe', 'ingredient'];
    if (!in_array($module, $allowedModules)) {
        return array('code' => 400, 'message' => '❌ module参数必须是: ' . implode(', ', $allowedModules));
    }
    
    if (empty($field)) {
        return array('code' => 400, 'message' => '❌ 缺少field参数');
    }
    
    $tableConfig = get_table_config($module);
    if (!$tableConfig) {
        return array('code' => 400, 'message' => '❌ 不支持的模块');
    }
    
    $table = $tableConfig['table'];
    $allowedFields = $tableConfig['fields'];
    
    if (!in_array($field, $allowedFields)) {
        return array('code' => 400, 'message' => '❌ 不允许筛选的字段: ' . $field);
    }
    
    if ($distinct) {
        $sql = "SELECT DISTINCT $field FROM $table WHERE $field IS NOT NULL AND $field != '' ORDER BY $field ASC";
    } else {
        $sql = "SELECT $field, COUNT(*) as count FROM $table WHERE $field IS NOT NULL AND $field != '' GROUP BY $field ORDER BY count DESC LIMIT 100";
    }
    
    $results = $zbp->db->Query($sql);
    
    $list = array();
    foreach ($results as $row) {
        if ($distinct) {
            $list[] = $row[$field];
        } else {
            $list[] = array(
                'value' => $row[$field],
                'count' => (int) $row['count']
            );
        }
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'module' => $module,
            'field' => $field,
            'distinct' => $distinct,
            'list' => $list,
            'total' => count($list)
        )
    );
}

/**
 * 获取表配置
 */
function get_table_config($module) {
    global $zbp;
    
    $configs = array(
        'recipe' => array(
            'table' => $zbp->db->dbpre . 'post',
            'primary_key' => 'log_ID',
            'fields' => ['log_ID', 'log_Title', 'log_CateID', 'log_AuthorID', 'log_Tag', 'log_Status', 'log_Type', 'log_IsTop', 'log_Intro', 'log_Content', 'log_CreateTime', 'log_PostTime', 'log_UpdateTime', 'log_CommNums', 'log_ViewNums'],
            'default_order' => 'ORDER BY log_PostTime DESC'
        ),
        'ingredient' => array(
            'table' => $zbp->db->dbpre . 'ingredient_detail',
            'primary_key' => 'ingredient_id',
            'fields' => ['ingredient_id', 'name', 'alias', 'usage_tip', 'introduction', 'nutrition', 'guidance', 'effect', 'other', 'nutrients', 'create_time', 'update_time', 'author', 'view_count', 'cate_ID', 'allergen', 'allergen_type'],
            'default_order' => 'ORDER BY ingredient_id ASC'
        ),
        'category' => array(
            'table' => $zbp->db->dbpre . 'category',
            'primary_key' => 'cate_ID',
            'fields' => ['cate_ID', 'cate_Name', 'cate_Order', 'cate_Type', 'cate_Count', 'cate_Alias', 'cate_ParentID', 'cate_RootID'],
            'default_order' => 'ORDER BY cate_Order ASC'
        ),
        'tag' => array(
            'table' => $zbp->db->dbpre . 'tag',
            'primary_key' => 'tag_ID',
            'fields' => ['tag_ID', 'tag_Name', 'tag_Order', 'tag_Type', 'tag_Count', 'tag_Alias'],
            'default_order' => 'ORDER BY tag_Count DESC'
        )
    );
    
    return $configs[$module] ?? null;
}

/**
 * 构建WHERE子句
 */
function build_where_clause($field, $value, $operator) {
    $value = addslashes($value);
    
    switch ($operator) {
        case 'eq':
            return "$field = '$value'";
        case 'neq':
            return "$field != '$value'";
        case 'like':
            return "$field LIKE '%$value%'";
        case 'gt':
            return "$field > '$value'";
        case 'lt':
            return "$field < '$value'";
        case 'gte':
            return "$field >= '$value'";
        case 'lte':
            return "$field <= '$value'";
        case 'in':
            $values = array_map(function($v) { return "'" . addslashes(trim($v)) . "'"; }, explode(',', $value));
            return "$field IN (" . implode(',', $values) . ")";
        default:
            return "$field = '$value'";
    }
}

/**
 * 格式化查询结果
 */
function format_results($results, $module, $fields) {
    global $zbp;
    $list = array();
    
    foreach ($results as $row) {
        $item = array();
        
        if ($module === 'recipe') {
            $item = array(
                'id' => (int) $row['log_ID'],
                'title' => $row['log_Title'] ?? '',
                'intro' => $row['log_Intro'] ?? '',
                'category_id' => (int) ($row['log_CateID'] ?? 0),
                'author_id' => (int) ($row['log_AuthorID'] ?? 0),
                'view_count' => (int) ($row['log_ViewNums'] ?? 0),
                'comment_count' => (int) ($row['log_CommNums'] ?? 0),
                'post_time' => (int) ($row['log_PostTime'] ?? 0),
                'status' => (int) ($row['log_Status'] ?? 0),
                'url' => '?act=detail&id=' . $row['log_ID']
            );
            
            $cate = $zbp->GetCategoryByID($item['category_id']);
            $item['category_name'] = $cate ? $cate->Name : '';
            
        } elseif ($module === 'ingredient') {
            $item = array(
                'id' => (int) $row['ingredient_id'],
                'name' => $row['name'] ?? '',
                'view_count' => (int) ($row['view_count'] ?? 0),
                'author' => $row['author'] ?? '',
                'cate_id' => (int) ($row['cate_ID'] ?? 0),
                'create_time' => (int) ($row['create_time'] ?? 0),
                'url' => '?act=ingredient_detail&id=' . $row['ingredient_id']
            );
            
        } elseif ($module === 'category') {
            $item = array(
                'id' => (int) $row['cate_ID'],
                'name' => $row['cate_Name'] ?? '',
                'alias' => $row['cate_Alias'] ?? '',
                'parent_id' => (int) ($row['cate_ParentID'] ?? 0),
                'count' => (int) ($row['cate_Count'] ?? 0),
                'order' => (int) ($row['cate_Order'] ?? 0)
            );
            
        } elseif ($module === 'tag') {
            $item = array(
                'id' => (int) $row['tag_ID'],
                'name' => $row['tag_Name'] ?? '',
                'alias' => $row['tag_Alias'] ?? '',
                'count' => (int) ($row['tag_Count'] ?? 0),
                'order' => (int) ($row['tag_Order'] ?? 0)
            );
        }
        
        $list[] = $item;
    }
    
    return $list;
}

// ==================== 统一格式输出函数 ====================

/**
 * 统一列表输出
 * @param string $type recipe/ingredient
 * @return array
 */
function get_unified_list($type) {
    global $zbp;
    
    $page = (int) ($_GET['page'] ?? 1);
    $limit = (int) ($_GET['limit'] ?? 20);
    $cateId = (int) ($_GET['cate_id'] ?? 0);
    $search = trim($_GET['search'] ?? '');
    
    if ($limit > 100) $limit = 100;
    if ($limit < 1) $limit = 20;
    if ($page < 1) $page = 1;
    
    $offset = ($page - 1) * $limit;
    
    if ($type === 'recipe') {
        return get_recipe_list_unified($page, $limit, $offset, $cateId, $search);
    } else {
        return get_ingredient_list_unified($page, $limit, $offset, $cateId, $search);
    }
}

/**
 * 食谱列表（统一格式）
 */
function get_recipe_list_unified($page, $limit, $offset, $cateId, $search) {
    global $zbp;
    
    $tablePost = $zbp->db->dbpre . 'post';
    $tableCategory = $zbp->db->dbpre . 'category';
    $tablePostStat = $zbp->db->dbpre . 'post_stat';
    
    $whereSql = "WHERE p.log_Type = 0 AND p.log_Status = 0";
    
    if ($cateId > 0) {
        $whereSql .= " AND p.log_CateID = $cateId";
    }
    
    if (!empty($search)) {
        $search = $zbp->db->EscapeString($search);
        $whereSql .= " AND (p.log_Title LIKE '%$search%' OR p.log_Intro LIKE '%$search%')";
    }
    
    $countSql = "SELECT COUNT(*) as total FROM $tablePost p $whereSql";
    $countResult = $zbp->db->Query($countSql);
    $total = (int) ($countResult[0]['total'] ?? 0);
    
    $sql = "SELECT p.log_ID, p.log_Title, p.log_Intro, p.log_CateID, p.log_PostTime, 
                   p.log_ViewNums, p.log_Tag, c.cate_Name,
                   COALESCE(s.like_nums, 0) as like_nums,
                   COALESCE(s.recommend_nums, 0) as recommend_nums
            FROM $tablePost p
            LEFT JOIN $tableCategory c ON p.log_CateID = c.cate_ID
            LEFT JOIN $tablePostStat s ON p.log_ID = s.log_id
            $whereSql
            ORDER BY p.log_PostTime DESC
            LIMIT $offset, $limit";
    
    $results = $zbp->db->Query($sql);
    
    $list = array();
    foreach ($results as $row) {
        $list[] = format_unified_item($row, 'recipe');
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'type' => 'recipe',
            'type_name' => '食谱',
            'list' => $list,
            'page' => $page,
            'limit' => $limit,
            'total' => $total,
            'has_more' => ($page * $limit) < $total
        )
    );
}

/**
 * 食材列表（统一格式）
 */
function get_ingredient_list_unified($page, $limit, $offset, $cateId, $search) {
    global $zbp;
    
    $table = $zbp->db->dbpre . 'ingredient_detail';
    
    $whereClauses = array();
    
    if ($cateId > 0) {
        $whereClauses[] = "cate_ID = $cateId";
    }
    
    if (!empty($search)) {
        $search = $zbp->db->EscapeString($search);
        $whereClauses[] = "name LIKE '%$search%'";
    }
    
    $whereSql = empty($whereClauses) ? '' : 'WHERE ' . implode(' AND ', $whereClauses);
    
    $countSql = "SELECT COUNT(*) as total FROM $table $whereSql";
    $countResult = $zbp->db->Query($countSql);
    $total = (int) ($countResult[0]['total'] ?? 0);
    
    $sql = "SELECT ingredient_id, name, view_count, allergen, allergen_type, 
                   introduction, cate_ID, create_time
            FROM $table 
            $whereSql
            ORDER BY ingredient_id ASC
            LIMIT $offset, $limit";
    
    $results = $zbp->db->Query($sql);
    
    $list = array();
    foreach ($results as $row) {
        $list[] = format_unified_item($row, 'ingredient');
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'type' => 'ingredient',
            'type_name' => '食材',
            'list' => $list,
            'page' => $page,
            'limit' => $limit,
            'total' => $total,
            'has_more' => ($page * $limit) < $total
        )
    );
}

/**
 * 统一详情输出
 */
function get_unified_detail($type) {
    global $zbp;
    
    $id = (int) ($_GET['id'] ?? 0);
    
    if ($id <= 0) {
        return array('code' => 400, 'message' => '缺少ID参数');
    }
    
    if ($type === 'recipe') {
        return get_recipe_detail_unified($id);
    } else {
        return get_ingredient_detail_unified($id);
    }
}

/**
 * 食谱详情（统一格式）
 */
function get_recipe_detail_unified($id) {
    global $zbp;
    
    $tablePost = $zbp->db->dbpre . 'post';
    $tableCategory = $zbp->db->dbpre . 'category';
    $tablePostStat = $zbp->db->dbpre . 'post_stat';
    $tableRecipeIngredient = $zbp->db->dbpre . 'recipe_ingredient';
    
    $sql = "SELECT p.log_ID, p.log_Title, p.log_Content, p.log_Intro, p.log_CateID, 
                   p.log_PostTime, p.log_ViewNums, p.log_Tag, c.cate_Name,
                   COALESCE(s.like_nums, 0) as like_nums,
                   COALESCE(s.recommend_nums, 0) as recommend_nums
            FROM $tablePost p
            LEFT JOIN $tableCategory c ON p.log_CateID = c.cate_ID
            LEFT JOIN $tablePostStat s ON p.log_ID = s.log_id
            WHERE p.log_ID = $id AND p.log_Type = 0 AND p.log_Status = 0
            LIMIT 1";
    
    $results = $zbp->db->Query($sql);
    
    if (empty($results)) {
        return array('code' => 404, 'message' => '食谱不存在');
    }
    
    $row = $results[0];
    $item = format_unified_item($row, 'recipe', true);
    
    $ingredientSql = "SELECT name, amount, unit FROM $tableRecipeIngredient WHERE log_id = $id";
    $ingredientResults = $zbp->db->Query($ingredientSql);
    $item['ingredients'] = array();
    foreach ($ingredientResults as $ing) {
        $item['ingredients'][] = array(
            'name' => $ing['name'],
            'amount' => $ing['amount'],
            'unit' => $ing['unit']
        );
    }
    
    return array('code' => 200, 'message' => 'success', 'data' => $item);
}

/**
 * 食材详情（统一格式）
 */
function get_ingredient_detail_unified($id) {
    global $zbp;
    
    $table = $zbp->db->dbpre . 'ingredient_detail';
    $tableStat = $zbp->db->dbpre . 'ingredient_stat';
    
    $sql = "SELECT * FROM $table WHERE ingredient_id = $id LIMIT 1";
    $results = $zbp->db->Query($sql);
    
    if (empty($results)) {
        return array('code' => 404, 'message' => '食材不存在');
    }
    
    $row = $results[0];
    $item = format_unified_item($row, 'ingredient', true);
    
    $statSql = "SELECT * FROM $tableStat WHERE ingredient_id = $id LIMIT 1";
    $statResults = $zbp->db->Query($statSql);
    if (!empty($statResults)) {
        $stat = $statResults[0];
        $item['statistics']['like_count'] = (int) ($stat['like_nums'] ?? 0);
        $item['statistics']['recommend_count'] = (int) ($stat['recommend_nums'] ?? 0);
    }
    
    return array('code' => 200, 'message' => 'success', 'data' => $item);
}

/**
 * 统一搜索
 */
function get_unified_search($type) {
    global $zbp;
    
    $keyword = trim($_GET['keyword'] ?? '');
    $page = (int) ($_GET['page'] ?? 1);
    $limit = (int) ($_GET['limit'] ?? 20);
    
    if (empty($keyword)) {
        return array('code' => 400, 'message' => '缺少搜索关键词');
    }
    
    if ($limit > 100) $limit = 100;
    $offset = ($page - 1) * $limit;
    
    $keyword = $zbp->db->EscapeString($keyword);
    
    if ($type === 'recipe') {
        $tablePost = $zbp->db->dbpre . 'post';
        $tableCategory = $zbp->db->dbpre . 'category';
        
        $countSql = "SELECT COUNT(*) as total FROM $tablePost 
                     WHERE log_Type = 0 AND log_Status = 0 
                     AND (log_Title LIKE '%$keyword%' OR log_Intro LIKE '%$keyword%')";
        $countResult = $zbp->db->Query($countSql);
        $total = (int) ($countResult[0]['total'] ?? 0);
        
        $sql = "SELECT p.log_ID, p.log_Title, p.log_Intro, p.log_CateID, p.log_PostTime, 
                       p.log_ViewNums, c.cate_Name
                FROM $tablePost p
                LEFT JOIN $tableCategory c ON p.log_CateID = c.cate_ID
                WHERE p.log_Type = 0 AND p.log_Status = 0 
                AND (p.log_Title LIKE '%$keyword%' OR p.log_Intro LIKE '%$keyword%')
                ORDER BY p.log_PostTime DESC
                LIMIT $offset, $limit";
        
        $results = $zbp->db->Query($sql);
        $list = array();
        foreach ($results as $row) {
            $list[] = format_unified_item($row, 'recipe');
        }
    } else {
        $table = $zbp->db->dbpre . 'ingredient_detail';
        
        $countSql = "SELECT COUNT(*) as total FROM $table WHERE name LIKE '%$keyword%'";
        $countResult = $zbp->db->Query($countSql);
        $total = (int) ($countResult[0]['total'] ?? 0);
        
        $sql = "SELECT ingredient_id, name, view_count, allergen, allergen_type
                FROM $table 
                WHERE name LIKE '%$keyword%'
                ORDER BY ingredient_id ASC
                LIMIT $offset, $limit";
        
        $results = $zbp->db->Query($sql);
        $list = array();
        foreach ($results as $row) {
            $list[] = format_unified_item($row, 'ingredient');
        }
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'type' => $type,
            'type_name' => $type === 'recipe' ? '食谱' : '食材',
            'keyword' => $keyword,
            'list' => $list,
            'page' => $page,
            'limit' => $limit,
            'total' => $total,
            'has_more' => ($page * $limit) < $total
        )
    );
}

/**
 * 统一热门
 */
function get_unified_hot($type) {
    global $zbp;
    
    $limit = (int) ($_GET['limit'] ?? 20);
    if ($limit > 50) $limit = 50;
    
    if ($type === 'recipe') {
        $tablePost = $zbp->db->dbpre . 'post';
        $tableCategory = $zbp->db->dbpre . 'category';
        
        $sql = "SELECT p.log_ID, p.log_Title, p.log_Intro, p.log_CateID, p.log_PostTime, 
                       p.log_ViewNums, c.cate_Name
                FROM $tablePost p
                LEFT JOIN $tableCategory c ON p.log_CateID = c.cate_ID
                WHERE p.log_Type = 0 AND p.log_Status = 0
                ORDER BY p.log_ViewNums DESC
                LIMIT $limit";
        
        $results = $zbp->db->Query($sql);
        $list = array();
        foreach ($results as $row) {
            $list[] = format_unified_item($row, 'recipe');
        }
    } else {
        $table = $zbp->db->dbpre . 'ingredient_detail';
        
        $sql = "SELECT ingredient_id, name, view_count, allergen, allergen_type
                FROM $table 
                ORDER BY view_count DESC
                LIMIT $limit";
        
        $results = $zbp->db->Query($sql);
        $list = array();
        foreach ($results as $row) {
            $list[] = format_unified_item($row, 'ingredient');
        }
    }
    
    return array(
        'code' => 200,
        'message' => 'success',
        'data' => array(
            'type' => $type,
            'type_name' => $type === 'recipe' ? '食谱' : '食材',
            'list' => $list,
            'limit' => $limit
        )
    );
}

/**
 * 格式化统一输出项
 */
function format_unified_item($row, $type, $isDetail = false) {
    if ($type === 'recipe') {
        $item = array(
            'id' => (int) $row['log_ID'],
            'type' => 'recipe',
            'type_name' => '食谱',
            'title' => $row['log_Title'],
            'intro' => mb_substr(strip_tags($row['log_Intro'] ?? ''), 0, 100),
            'category' => array(
                'id' => (int) ($row['log_CateID'] ?? 0),
                'name' => $row['cate_Name'] ?? ''
            ),
            'statistics' => array(
                'view_count' => (int) ($row['log_ViewNums'] ?? 0),
                'like_count' => (int) ($row['like_nums'] ?? 0),
                'recommend_count' => (int) ($row['recommend_nums'] ?? 0)
            ),
            'publish_time' => strtotime($row['log_PostTime']),
            'url' => '?act=unified_detail&type=recipe&id=' . $row['log_ID']
        );
        
        if ($isDetail) {
            $item['content'] = $row['log_Content'] ?? '';
            $item['tags'] = parse_tags($row['log_Tag'] ?? '');
        }
    } else {
        $allergenType = json_decode($row['allergen_type'] ?? '[]', true);
        $allergen = json_decode($row['allergen'] ?? '[]', true);
        
        $item = array(
            'id' => (int) $row['ingredient_id'],
            'type' => 'ingredient',
            'type_name' => '食材',
            'title' => $row['name'],
            'intro' => mb_substr(strip_tags($row['introduction'] ?? ''), 0, 100),
            'category' => array(
                'id' => (int) ($row['cate_ID'] ?? 0),
                'name' => ''
            ),
            'statistics' => array(
                'view_count' => (int) ($row['view_count'] ?? 0),
                'like_count' => 0,
                'recommend_count' => 0
            ),
            'publish_time' => strtotime($row['create_time'] ?? 'now'),
            'url' => '?act=unified_detail&type=ingredient&id=' . $row['ingredient_id']
        );
        
        if (!empty($allergenType)) {
            $item['allergen_type'] = $allergenType;
        }
        if (!empty($allergen)) {
            $item['allergen'] = $allergen;
        }
        
        if ($isDetail) {
            $item['content'] = $row['introduction'] ?? '';
            $item['usage_tip'] = $row['usage_tip'] ?? '';
            $item['nutrition'] = json_decode($row['nutrition'] ?? '[]', true);
            $item['effect'] = $row['effect'] ?? '';
        }
    }
    
    return $item;
}