<?php
header('Content-Type: application/json; charset=utf-8');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
header('Access-Control-Allow-Headers: Content-Type, charset');

// 引入工具类
require_once 'utils/FileManager.php';
require_once 'utils/ApiBase.php';

class FundAdminAPI extends ApiBase {
    private $configFile = 'data/fund_config.json';
    private $operationFile = 'data/operation_log.json';
    private $fundNamesFile = 'data/fund_names.json';
    private $recommendedFundsFile = 'data/recommended_funds.json';
    
    public function __construct() {
        // 确保数据目录存在
        FileManager::ensureDirExists('data');
        
        // 初始化配置文件（如果不存在）
        if (!FileManager::fileExists($this->configFile)) {
            $this->initConfig();
        }
        
        // 初始化操作日志文件（如果不存在）
        if (!FileManager::fileExists($this->operationFile)) {
            $this->initOperationLog();
        }
        
        // 初始化基金名称文件（如果不存在）
        if (!FileManager::fileExists($this->fundNamesFile)) {
            $this->initFundNames();
        }
        
        // 初始化推荐基金文件（如果不存在）
        if (!FileManager::fileExists($this->recommendedFundsFile)) {
            $this->initRecommendedFunds();
        }
    }

    /**
     * 初始化配置文件
     */
    private function initConfig() {
        $defaultConfig = [
            [
                "channel" => "0",
                "fund_code" => "003766",
                "investment" => 1000,
                "name" => "汇添富医疗服务混合"
            ],
            [
                "channel" => "0", 
                "fund_code" => "004206",
                "investment" => 1000,
                "name" => "基金004206"
            ],
            [
                "channel" => "0",
                "fund_code" => "019432", 
                "investment" => 1000,
                "name" => "基金019432"
            ],
            [
                "channel" => "1",
                "fund_code" => "003766",
                "investment" => 1000,
                "name" => "汇添富医疗服务混合"
            ],
            [
                "channel" => "1",
                "fund_code" => "008327",
                "investment" => 1000,
                "name" => "基金008327"
            ],
            [
                "channel" => "2",
                "fund_code" => "017811",
                "investment" => 1000,
                "name" => "基金017811"
            ]
        ];
        
        FileManager::saveJsonFile($this->configFile, $defaultConfig);
    }

    /**
     * 初始化操作日志
     */
    private function initOperationLog() {
        $initialLog = [
            'operations' => []
        ];
        
        FileManager::saveJsonFile($this->operationFile, $initialLog);
    }
    
    /**
     * 初始化推荐基金文件
     */
    private function initRecommendedFunds() {
        $initialData = [];
        FileManager::saveJsonFile($this->recommendedFundsFile, $initialData);
    }
    
    /**
     * 初始化基金名称文件
     */
    private function initFundNames() {
        // 从配置中提取已有的基金名称作为初始数据
        $defaultFundNames = [];
        $config = $this->loadConfig();
        
        foreach ($config as $fund) {
            if (isset($fund['fund_code']) && isset($fund['name']) && $fund['name'] !== "基金{$fund['fund_code']}") {
                $defaultFundNames[$fund['fund_code']] = $fund['name'];
            }
        }
        
        // 添加一些常用基金名称
        $commonFunds = [
            '003766' => '汇添富医疗服务混合',
            '110022' => '易方达消费行业股票',
            '001714' => '工银文体产业股票',
            '000241' => '中欧时代先锋股票',
            '001475' => '易方达国防军工混合',
            '161725' => '招商中证白酒指数',
            '000689' => '前海开源新经济混合',
            '001102' => '前海开源国家比较优势混合',
            '001593' => '天弘创业板ETF联接',
            '000971' => '高升沪深300指数增强'
        ];
        
        // 合并默认基金名称
        $fundNames = array_merge($defaultFundNames, $commonFunds);
        
        FileManager::saveJsonFile($this->fundNamesFile, $fundNames);
    }
    
    /**
     * 加载基金名称映射
     */
    private function loadFundNames() {
        if (!FileManager::fileExists($this->fundNamesFile)) {
            $this->initFundNames();
        }
        
        return FileManager::loadJsonFile($this->fundNamesFile, []);
    }
    
    /**
     * 保存基金名称映射
     */
    private function saveFundNames($fundNames) {
        $result = FileManager::saveJsonFile($this->fundNamesFile, $fundNames);
        
        if ($result === false) {
            error_log('无法写入基金名称文件，请检查目录权限');
            return false;
        }
        
        return true;
    }

    /**
     * 记录操作日志
     */
    private function logOperation($type, $fundCode, $channel = null, $investment = null, $details = '') {
        $log = $this->loadOperationLog();
        
        $operation = [
            'id' => uniqid(),
            'type' => $type, // 'add', 'update', 'delete'
            'fund_code' => $fundCode,
            'channel' => $channel,
            'investment' => $investment,
            'details' => $details,
            'timestamp' => time(),
            'date' => date('Y-m-d H:i:s')
        ];
        
        $log['operations'][] = $operation;
        
        // 只保留最近100条操作记录
        if (count($log['operations']) > 100) {
            $log['operations'] = array_slice($log['operations'], -100);
        }
       // 记录操作日志
        FileManager::saveJsonFile($this->operationFile, $log);
        
        return $operation;
    }

    /**
     * 加载操作日志
     */
    private function loadOperationLog() {
        return FileManager::loadJsonFile($this->operationFile, ['operations' => []], [$this, 'initOperationLog']);
    }

    /**
     * 获取基金名称（优先从文件读取，不存在时从API获取并保存）
     */
    public function getFundName($fundCode) {
        try {
            // 优先从文件中查找
            $fundNames = $this->loadFundNames();
            if (isset($fundNames[$fundCode])) {
                return [
                    'success' => true,
                    'name' => $fundNames[$fundCode]
                ];
            } else {
                // 文件中没有，尝试从API获取
                $fundName = $this->fetchFundNameFromAPI($fundCode);
                if ($fundName) {
                    // 将新获取的基金名称保存到文件中
                    $fundNames[$fundCode] = $fundName;
                    $this->saveFundNames($fundNames);
                    
                    return [
                        'success' => true,
                        'name' => $fundName
                    ];
                } else {
                    // 如果API也获取失败，尝试从本地数据查找
                    $config = $this->loadConfig();
                    $fund = array_filter($config, function($item) use ($fundCode) {
                        return $item['fund_code'] == $fundCode;
                    });
                    
                    $fund = reset($fund);
                    if ($fund && isset($fund['name'])) {
                        // 保存到文件中供以后使用
                        $fundNames[$fundCode] = $fund['name'];
                        $this->saveFundNames($fundNames);
                        
                        return [
                            'success' => true,
                            'name' => $fund['name']
                        ];
                    } else {
                        // 如果都没有，返回默认名称
                        return [
                            'success' => true,
                            'name' => "基金$fundCode"
                        ];
                    }
                }
            }
        } catch (Exception $e) {
            return [
                'success' => false,
                'message' => '获取基金名称失败: ' . $e->getMessage()
            ];
        }
    }

    /**
     * 获取操作日志
     */
    public function getOperationLog($limit = 20) {
        try {
            $log = $this->loadOperationLog();
            $operations = $log['operations'];
            
            // 按时间倒序排列
            usort($operations, function($a, $b) {
                return $b['timestamp'] - $a['timestamp'];
            });
            
            // 限制返回数量
            $operations = array_slice($operations, 0, $limit);
            
            return [
                'success' => true,
                'data' => $operations
            ];
        } catch (Exception $e) {
            return [
                'success' => false,
                'message' => '获取操作日志失败: ' . $e->getMessage()
            ];
        }
    }

    /**
     * 加载基金配置
     */
    private function loadConfig() {
        return FileManager::loadJsonFile($this->configFile, [], [$this, 'initConfig']);
    }
    
    /**
     * 保存基金配置
     */
    private function saveConfig($config) {
        $result = FileManager::saveJsonFile($this->configFile, $config);
        
        if ($result === false) {
            throw new Exception('无法写入配置文件，请检查目录权限');
        }
        
        return true;
    }

    /**
     * 获取所有基金配置
     */
    public function getFunds() {
        try {
            $config = $this->loadConfig();
            
            return [
                'success' => true,
                'data' => $config
            ];
        } catch (Exception $e) {
            return [
                'success' => false,
                'message' => '获取基金配置失败: ' . $e->getMessage()
            ];
        }
    }

    /**
     * 添加基金
     */
    public function addFund($fundData) {
        try {
            // 调试：记录接收到的数据
            error_log("addFund received: " . print_r($fundData, true));
            
            $config = $this->loadConfig();
            
            // 验证数据
            if (!isset($fundData['fund_code']) || trim($fundData['fund_code']) === '') {
                return [
                    'success' => false,
                    'message' => '基金代码不能为空'
                ];
            }
            
            if (!isset($fundData['channel']) || trim($fundData['channel']) === '') {
                return [
                    'success' => false,
                    'message' => '渠道不能为空'
                ];
            }
            
            $fundCode = trim($fundData['fund_code']);
            $channel = trim($fundData['channel']);
            
            // 验证基金代码格式
            if (!preg_match('/^\d{6}$/', $fundCode)) {
                return [
                    'success' => false,
                    'message' => '基金代码必须是6位数字'
                ];
            }
            
            // 检查是否已存在
            foreach ($config as $item) {
                if ($item['fund_code'] === $fundCode && $item['channel'] === $channel) {
                    return [
                        'success' => false,
                        'message' => '该渠道下已存在相同的基金代码'
                    ];
                }
            }
            
            // 添加新基金
            // 获取基金名称
            $fundName = "基金{$fundCode}";
            $fundNames = [
                '003766' => '汇添富医疗服务混合',
                '110022' => '易方达消费行业股票'
            ];
            if (isset($fundNames[$fundCode])) {
                $fundName = $fundNames[$fundCode];
            }
            
            $newFund = [
                'channel' => $channel,
                'fund_code' => $fundCode,
                'investment' => isset($fundData['investment']) ? floatval($fundData['investment']) : 1000,
                'name' => $fundName
            ];
            
            $config[] = $newFund;
            
            if ($this->saveConfig($config)) {
                // 记录操作日志
                $this->logOperation('add', $fundCode, $channel, $newFund['investment'], '添加基金');
                
                return [
                    'success' => true,
                    'message' => '基金添加成功'
                ];
            } else {
                return [
                    'success' => false,
                    'message' => '保存配置失败'
                ];
            }
        } catch (Exception $e) {
            return [
                'success' => false,
                'message' => '添加基金失败: ' . $e->getMessage()
            ];
        }
    }

    /**
     * 更新基金
     */
    public function updateFund($fundData) {
        try {
            // 调试：记录接收到的数据
            error_log("updateFund received: " . print_r($fundData, true));
            
            $config = $this->loadConfig();
            $index = isset($fundData['index']) ? intval($fundData['index']) : -1;
            
            // 验证索引
            if ($index < 0 || !isset($config[$index])) {
                return [
                    'success' => false,
                    'message' => '基金不存在'
                ];
            }
            
            // 验证数据
            if (!isset($fundData['fund_code']) || trim($fundData['fund_code']) === '') {
                return [
                    'success' => false,
                    'message' => '基金代码不能为空'
                ];
            }
            
            if (!isset($fundData['channel']) || trim($fundData['channel']) === '') {
                return [
                    'success' => false,
                    'message' => '渠道不能为空'
                ];
            }
            
            $fundCode = trim($fundData['fund_code']);
            $channel = trim($fundData['channel']);
            
            // 获取旧数据用于日志
            $oldFund = $config[$index];
            
            // 检查重复（排除自身）
            foreach ($config as $i => $item) {
                if ($i !== $index && $item['fund_code'] === $fundCode && $item['channel'] === $channel) {
                    return [
                        'success' => false,
                        'message' => '该渠道下已存在相同的基金代码'
                    ];
                }
            }
            
            // 更新基金信息
            $config[$index] = [
                'channel' => $channel,
                'fund_code' => $fundCode,
                'investment' => isset($fundData['investment']) ? floatval($fundData['investment']) : 1000,
                'name' => $oldFund['name'] ?? "基金{$fundCode}"
            ];
            
            if ($this->saveConfig($config)) {
                // 记录操作日志
                $details = sprintf('更新基金: 投资金额 %s -> %s', 
                    $oldFund['investment'], 
                    $config[$index]['investment']
                );
                $this->logOperation('update', $fundCode, $channel, $config[$index]['investment'], $details);
                
                return [
                    'success' => true,
                    'message' => '基金更新成功'
                ];
            } else {
                return [
                    'success' => false,
                    'message' => '保存配置失败'
                ];
            }
        } catch (Exception $e) {
            return [
                'success' => false,
                'message' => '更新基金失败: ' . $e->getMessage()
            ];
        }
    }

    /**
     * 删除基金
     */
    public function deleteFund($index) {
        try {
            $config = $this->loadConfig();
            $index = intval($index);
            
            // 验证索引
            if (!isset($config[$index])) {
                return [
                    'success' => false,
                    'message' => '基金不存在'
                ];
            }
            
            // 获取要删除的基金信息用于日志
            $deletedFund = $config[$index];
            
            // 删除基金
            array_splice($config, $index, 1);
            
            if ($this->saveConfig($config)) {
                // 记录操作日志
                $this->logOperation('delete', $deletedFund['fund_code'], $deletedFund['channel'], $deletedFund['investment'], '删除基金');
                
                return [
                    'success' => true,
                    'message' => '基金删除成功'
                ];
            } else {
                return [
                    'success' => false,
                    'message' => '保存配置失败'
                ];
            }
        } catch (Exception $e) {
            return [
                'success' => false,
                'message' => '删除基金失败: ' . $e->getMessage()
            ];
        }
    }

    /**
     * 获取基金名称列表（优先从文件读取，不存在时从API获取并保存）
     */
    public function getFundNames() {
        $fundCodes = $_GET['fund_codes'] ?? '';
        
        if (empty($fundCodes)) {
            return [
                'success' => false,
                'message' => '基金代码不能为空'
            ];
        }
        
        $codes = explode(',', $fundCodes);
        $results = [];
        $fundNames = $this->loadFundNames();
        
        foreach ($codes as $code) {
            $code = trim($code);
            if (!empty($code)) {
                // 先从文件中查找
                if (isset($fundNames[$code])) {
                    $results[$code] = $fundNames[$code];
                } else {
                    // 文件中没有，则从API获取
                    $fundName = $this->fetchFundNameFromAPI($code);
                    if ($fundName) {
                        $results[$code] = $fundName;
                        // 将新获取的基金名称保存到文件中
                        $fundNames[$code] = $fundName;
                        $this->saveFundNames($fundNames);
                    } else {
                        // 如果API也获取失败，使用默认名称
                        $results[$code] = "基金$code";
                    }
                }
            }
        }
        
        return [
            'success' => true,
            'data' => $results,
            'message' => '获取基金名称成功'
        ];
    }
    
    /**
     * 获取推荐基金列表
     */
    private function getRecommendedFunds() {
        try {
            $recommendedFunds = FileManager::loadJsonFile($this->recommendedFundsFile, []);
            
            // 按时间倒序排序
            usort($recommendedFunds, function($a, $b) {
                return strtotime($b['timestamp']) - strtotime($a['timestamp']);
            });
            
            echo json_encode(['success' => true, 'data' => $recommendedFunds], JSON_UNESCAPED_UNICODE);
        } catch (Exception $e) {
            echo json_encode(['success' => false, 'message' => '获取推荐基金失败: ' . $e->getMessage()], JSON_UNESCAPED_UNICODE);
        }
    }
    
    /**
     * 批准推荐基金
     */
    private function approveRecommendedFund() {
        try {
            $fundCode = isset($_GET['fund_code']) ? $_GET['fund_code'] : '';
            
            if (empty($fundCode)) {
                echo json_encode(['success' => false, 'message' => '基金代码不能为空'], JSON_UNESCAPED_UNICODE);
                return;
            }
            
            // 加载推荐基金数据
            $recommendedFunds = FileManager::loadJsonFile($this->recommendedFundsFile, []);
            
            // 查找并更新基金状态
            $found = false;
            foreach ($recommendedFunds as &$fund) {
                if ($fund['fund_code'] == $fundCode) {
                    $fund['status'] = 'approved';
                    $found = true;
                    break;
                }
            }
            
            if (!$found) {
                echo json_encode(['success' => false, 'message' => '未找到该推荐基金'], JSON_UNESCAPED_UNICODE);
                return;
            }
            
            // 保存更新后的数据
            FileManager::saveJsonFile($this->recommendedFundsFile, $recommendedFunds);
            
            // 添加到基金配置中
            $config = $this->loadConfig();
            $fundExists = false;
            foreach ($config as $existingFund) {
                if ($existingFund['fund_code'] == $fundCode && $existingFund['channel'] == '0') {
                    $fundExists = true;
                    break;
                }
            }
            
            if (!$fundExists) {
                $newFund = [
                    'channel' => '2', // 2表示支付宝渠道
                    'fund_code' => $fundCode,
                    'investment' => 1000,
                    'name' => '基金' . $fundCode
                ];
                $config[] = $newFund;
                $this->saveConfig($config);
            }
            
            // 记录操作日志
            $this->logOperation('approve_recommended_fund', ['fund_code' => $fundCode]);
            
            echo json_encode(['success' => true, 'message' => '基金批准成功'], JSON_UNESCAPED_UNICODE);
        } catch (Exception $e) {
            echo json_encode(['success' => false, 'message' => '批准基金失败: ' . $e->getMessage()], JSON_UNESCAPED_UNICODE);
        }
    }
    
    /**
     * 删除推荐基金
     */
    private function deleteRecommendedFund() {
        try {
            $fundCode = isset($_GET['fund_code']) ? $_GET['fund_code'] : '';
            
            if (empty($fundCode)) {
                echo json_encode(['success' => false, 'message' => '基金代码不能为空'], JSON_UNESCAPED_UNICODE);
                return;
            }
            
            // 加载推荐基金数据
            $recommendedFunds = FileManager::loadJsonFile($this->recommendedFundsFile, []);
            
            // 过滤掉要删除的基金
            $filteredFunds = array_filter($recommendedFunds, function($fund) use ($fundCode) {
                return $fund['fund_code'] != $fundCode;
            });
            
            // 保存过滤后的数据
            FileManager::saveJsonFile($this->recommendedFundsFile, array_values($filteredFunds));
            
            // 记录操作日志
            $this->logOperation('delete_recommended_fund', ['fund_code' => $fundCode]);
            
            echo json_encode(['success' => true, 'message' => '基金删除成功'], JSON_UNESCAPED_UNICODE);
        } catch (Exception $e) {
            echo json_encode(['success' => false, 'message' => '删除基金失败: ' . $e->getMessage()], JSON_UNESCAPED_UNICODE);
        }
    }
    
    /**
     * 从API获取基金名称（只在文件中不存在时调用）
     */
    private function fetchFundNameFromAPI($fundCode) {
        // 尝试多个API源
        $apiSources = [
            "https://fundgz.1234567.com.cn/js/{$fundCode}.js?rt=" . time(),
            "https://api.doctorxiong.club/v1/fund/detail?code={$fundCode}"
        ];
        
        foreach ($apiSources as $apiUrl) {
            try {
                // 设置超时时间
                $context = stream_context_create([
                    'http' => [
                        'timeout' => 5,
                        'header' => 'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
                    ]
                ]);
                
                $response = FileManager::loadFile($apiUrl);
                
                if ($response) {
                    // 处理不同API的响应格式
                    if (strpos($apiUrl, 'fundgz.1234567.com.cn') !== false) {
                        // 处理JSONP格式
                        if (preg_match('/jsonpgz\((.*)\)/', $response, $matches)) {
                            $data = json_decode($matches[1], true);
                            if (isset($data['name']) && !empty($data['name'])) {
                                return $data['name'];
                            }
                        }
                    } else if (strpos($apiUrl, 'doctorxiong.club') !== false) {
                        // 处理JSON格式
                        $data = json_decode($response, true);
                        if (isset($data['data']['name']) && !empty($data['data']['name'])) {
                            return $data['data']['name'];
                        }
                    }
                }
            } catch (Exception $e) {
                // 记录错误但继续尝试下一个API源
                error_log("获取基金{$fundCode}名称失败: " . $e->getMessage());
                continue;
            }
        }
        
        // 所有API都失败，返回false
        return false;
    }

    /**
     * 处理API请求
     */
    public function handleRequest() {
        // 处理OPTIONS请求
        $this->handleOptionsRequest();
        
        // 解析请求参数
        $request = $this->parseRequest();
        $method = $request['method'];
        $action = $request['action'];
        $params = $request['params'];
        
        if ($method === 'GET') {
            switch ($action) {
                case 'get_funds':
                    $result = $this->getFunds();
                    echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    break;
                    
                case 'get_operation_log':
                    $limit = isset($params['limit']) ? intval($params['limit']) : 20;
                    $result = $this->getOperationLog($limit);
                    echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    break;
                    
                case 'get_fund_name':
                    $fundCode = $params['fund_code'] ?? '';
                    if ($fundCode) {
                        $result = $this->getFundName($fundCode);
                        echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    } else {
                        echo json_encode(['success' => false, 'message' => '基金代码不能为空']);
                    }
                    break;
                    
                case 'get_fund_names':
                    $result = $this->getFundNames();
                    echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    break;
                case 'get_recommended_funds':
                    $this->getRecommendedFunds();
                    break;
                case 'approve_recommended_fund':
                    $this->approveRecommendedFund();
                    break;
                case 'delete_recommended_fund':
                    $this->deleteRecommendedFund();
                    break;
                case 'get_email_config':
                    $this->getEmailConfig();
                    break;
                    
                default:
                    http_response_code(404);
                    echo json_encode(['success' => false, 'message' => 'Endpoint not found']);
            }
        } elseif ($method === 'POST') {
            // 如果之前没有成功解析POST数据，则再次尝试
            if (!isset($postData) || json_last_error() !== JSON_ERROR_NONE) {
                // 获取POST数据
                $input = file_get_contents('php://input');
                $postData = json_decode($input, true);
                
                if (json_last_error() !== JSON_ERROR_NONE) {
                    http_response_code(400);
                    echo json_encode([
                        'success' => false, 
                        'message' => '无效的JSON数据: ' . json_last_error_msg(),
                        'debug_input' => $input
                    ]);
                    return;
                }
            }
            
            switch ($action) {
                case 'add_fund':
                    $result = $this->addFund($postData);
                    echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    break;
                    
                case 'update_fund':
                    $result = $this->updateFund($postData);
                    echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    break;
                    
                case 'delete_fund':
                    $result = $this->deleteFund($postData['index']);
                    echo json_encode($result, JSON_UNESCAPED_UNICODE);
                    break;
                case 'update_email_config':
                    $this->updateEmailConfig($postData);
                    break;
                case 'add_email_recipient':
                    $this->addEmailRecipient($postData);
                    break;
                case 'delete_email_recipient':
                    $this->deleteEmailRecipient($postData);
                    break;
                    
                default:
                    http_response_code(404);
                    echo json_encode(['success' => false, 'message' => 'Endpoint not found']);
            }
        } else {
            http_response_code(405);
            echo json_encode(['success' => false, 'message' => 'Method not allowed']);
        }
    }
    
    /**
     * 获取邮箱配置
     */
    private function getEmailConfig() {
        $emailConfigFile = 'data/email_config.json';
        
        $emailConfig = FileManager::loadJsonFile($emailConfigFile, null);
        if ($emailConfig !== null) {
            echo json_encode([
                'success' => true,
                'data' => $emailConfig
            ]);
        } else {
            echo json_encode([
                'success' => false,
                'message' => '邮箱配置文件不存在'
            ]);
        }
    }
    
    /**
     * 更新邮箱配置
     */
    private function updateEmailConfig($postData) {
        $emailConfigFile = 'data/email_config.json';
        
        // 验证必要参数
        $requiredParams = ['smtp_server', 'smtp_port', 'smtp_secure', 'username', 'password', 'from_email', 'from_name'];
        foreach ($requiredParams as $param) {
            if (!isset($postData[$param]) || empty(trim($postData[$param]))) {
                echo json_encode([
                    'success' => false,
                    'message' => "参数 {$param} 不能为空"
                ]);
                return;
            }
        }
        
        // 构建新的配置
        $newConfig = [
            'smtp_server' => trim($postData['smtp_server']),
            'smtp_port' => intval($postData['smtp_port']),
            'smtp_secure' => trim($postData['smtp_secure']),
            'username' => trim($postData['username']),
            'password' => trim($postData['password']),
            'from_email' => trim($postData['from_email']),
            'from_name' => trim($postData['from_name']),
            'to_emails' => isset($postData['to_emails']) && is_array($postData['to_emails']) ? $postData['to_emails'] : []
        ];
        
        // 保存配置
        if (FileManager::saveJsonFile($emailConfigFile, $newConfig)) {
            // 记录操作日志
            $this->logOperation('更新邮箱配置', ['smtp_server' => $newConfig['smtp_server'], 'username' => $newConfig['username']]);
            
            echo json_encode([
                'success' => true,
                'message' => '邮箱配置更新成功'
            ]);
        } else {
            echo json_encode([
                'success' => false,
                'message' => '邮箱配置更新失败'
            ]);
        }
    }
    
    /**
     * 添加邮箱收件人
     */
    private function addEmailRecipient($postData) {
        $emailConfigFile = 'data/email_config.json';
        
        if (!isset($postData['email']) || empty(trim($postData['email']))) {
            echo json_encode([
                'success' => false,
                'message' => '邮箱地址不能为空'
            ]);
            return;
        }
        
        $newEmail = trim($postData['email']);
        
        // 验证邮箱格式
        if (!filter_var($newEmail, FILTER_VALIDATE_EMAIL)) {
            echo json_encode([
                'success' => false,
                'message' => '邮箱地址格式无效'
            ]);
            return;
        }
        
        $emailConfig = FileManager::loadJsonFile($emailConfigFile, null);
        if ($emailConfig !== null) {
            // 检查邮箱是否已经存在
            if (in_array($newEmail, $emailConfig['to_emails'])) {
                echo json_encode([
                    'success' => false,
                    'message' => '邮箱地址已经存在'
                ]);
                return;
            }
            
            // 添加新邮箱
            $emailConfig['to_emails'][] = $newEmail;
            
            // 保存配置
            if (FileManager::saveJsonFile($emailConfigFile, $emailConfig)) {
                // 记录操作日志
                $this->logOperation('添加邮箱收件人', ['email' => $newEmail]);
                
                echo json_encode([
                    'success' => true,
                    'message' => '邮箱收件人添加成功',
                    'data' => $emailConfig['to_emails']
                ]);
            } else {
                echo json_encode([
                    'success' => false,
                    'message' => '邮箱收件人添加失败'
                ]);
            }
        } else {
            echo json_encode([
                'success' => false,
                'message' => '邮箱配置文件不存在'
            ]);
        }
    }
    
    /**
     * 删除邮箱收件人
     */
    private function deleteEmailRecipient($postData) {
        $emailConfigFile = 'data/email_config.json';
        
        if (!isset($postData['email']) || empty(trim($postData['email']))) {
            echo json_encode([
                'success' => false,
                'message' => '邮箱地址不能为空'
            ]);
            return;
        }
        
        $deleteEmail = trim($postData['email']);
        
        $emailConfig = FileManager::loadJsonFile($emailConfigFile, null);
        if ($emailConfig !== null) {
            // 查找邮箱在数组中的位置
            $index = array_search($deleteEmail, $emailConfig['to_emails']);
            if ($index === false) {
                echo json_encode([
                    'success' => false,
                    'message' => '未找到该邮箱地址'
                ]);
                return;
            }
            
            // 删除邮箱
            unset($emailConfig['to_emails'][$index]);
            // 重新索引数组
            $emailConfig['to_emails'] = array_values($emailConfig['to_emails']);
            
            // 保存配置
            if (FileManager::saveJsonFile($emailConfigFile, $emailConfig)) {
                // 记录操作日志
                $this->logOperation('删除邮箱收件人', ['email' => $deleteEmail]);
                
                echo json_encode([
                    'success' => true,
                    'message' => '邮箱收件人删除成功',
                    'data' => $emailConfig['to_emails']
                ]);
            } else {
                echo json_encode([
                    'success' => false,
                    'message' => '邮箱收件人删除失败'
                ]);
            }
        } else {
            echo json_encode([
                'success' => false,
                'message' => '邮箱配置文件不存在'
            ]);
        }
    }
}

// 错误处理
try {
    $api = new FundAdminAPI();
    $api->handleRequest();
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode([
        'success' => false,
        'message' => '服务器内部错误: ' . $e->getMessage()
    ]);
}
?>