<?php
// api.php - V37.0 (内置环境自检 + 强力容错版)
session_start();
// 屏蔽错误回显，防止破坏JSON（生产环境必须加）
ini_set('display_errors', 0);
error_reporting(0);

header('Content-Type: application/json; charset=utf-8');
header("Access-Control-Allow-Origin: *");
date_default_timezone_set('PRC'); 

require 'config.php';

// ==========================================
// 🚀 快递100 配置 (检查是否有空格!)
// ==========================================
$kuaidi100_customer = trim('7C845E771504204C5666ECB4730FD89C'); 
$kuaidi100_key      = trim('GHvWZXGx4328');

// 文件路径
define('DATA_PATH', 'data.json');
define('SET_PATH', 'settings.json');

// 自动初始化文件
function initFile($f) {
    if(!file_exists($f)) {
        @file_put_contents($f, json_encode([]));
    }
}
initFile(DATA_PATH);
initFile(SET_PATH);

$action = $_GET['action'] ?? '';

// --- 🛠️ 0. 环境自检接口 (直接在浏览器访问 api.php?action=check_env) ---
if ($action == 'check_env') {
    $checks = [];
    $checks['php_version'] = phpversion();
    $checks['curl_installed'] = function_exists('curl_init') ? '✅ 正常' : '❌ 未安装 (无法查询物流)';
    $checks['data_writable'] = is_writable(DATA_PATH) ? '✅ 可写' : '❌ 不可写 (请设置权限777)';
    $checks['key_configured'] = ($kuaidi100_key == '你的Key' || empty($kuaidi100_key)) ? '❌ 未配置' : '✅ 已配置';
    
    // 测试连接快递100
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'http://www.kuaidi100.com/');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
    $res = curl_exec($ch);
    $checks['network_test'] = $res ? '✅ 连通' : '❌ 无法连接外部网络';
    curl_close($ch);

    echo json_encode(['code'=>200, 'msg'=>'环境自检报告', 'data'=>$checks], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
    exit;
}

// --- 1. 登录 ---
if ($action == 'login') {
    $u=$_POST['username']??''; $p=$_POST['password']??'';
    if ($u===$admin_username && $p===$admin_password) {
        $_SESSION['is_admin']=true; echo json_encode(['code'=>200,'msg'=>'ok']);
    } else { echo json_encode(['code'=>401,'msg'=>'error']); }
    exit;
}

// --- 2. 设置 ---
if ($action == 'get_settings') {
    $d=['shop_name'=>'极速达','logo_img'=>'https://via.placeholder.com/150','notice'=>'...','banner_img'=>'','jump_url'=>'#'];
    $s=json_decode(file_get_contents(SET_PATH),true); if(is_array($s))$d=array_merge($d,$s); echo json_encode(['code'=>200,'data'=>$d]); exit;
}

// --- 3. 搜索 ---
if ($action == 'search') {
    $phone = trim($_POST['phone'] ?? '');
    $page = intval($_POST['page']??1);
    $limit = 10;
    
    // 演示号
    if ($phone === '13800138000') {
        echo json_encode(['code'=>200, 'data'=>[[
            'phone'=>'13800138000','address'=>'演示地址','register_time'=>'11-30','tracking_number'=>'SF888','showAll'=>false,
            'logistics'=>[['time'=>date('Y-m-d H:i'), 'status'=>'【已签收】演示数据']]
        ]], 'total'=>1, 'hasMore'=>false]); exit;
    }

    $content = file_get_contents(DATA_PATH);
    // 移除BOM头，防止json解析失败
    $content = preg_replace('/^\xEF\xBB\xBF/', '', $content); 
    $all = json_decode($content, true);
    if (!is_array($all)) $all = [];
    
    $matched = [];
    foreach (array_reverse($all) as $item) {
        if ($item['phone'] == $phone) $matched[] = $item;
    }

    $total = count($matched);
    $list = array_slice($matched, ($page-1)*$limit, $limit);

    foreach ($list as &$item) {
        $item['logistics'] = getLogistics($item['tracking_number'], $item['phone'], $kuaidi100_customer, $kuaidi100_key);
    }

    echo json_encode(['code'=>200, 'data'=>$list, 'total'=>$total, 'hasMore'=>($page*$limit)<$total]);
    exit;
}

// --- 🚀 核心物流函数 (V37 修正版) ---
function getLogistics($num, $phone, $c, $k) {
    if (empty($num)) return [['time'=>'--', 'status'=>'无单号']];
    if (empty($c) || $c == '你的Customer') return [['time'=>date('Y-m-d H:i'), 'status'=>'【后台】API未配置']];

    // 1. 智能识别
    $autoUrl = "http://www.kuaidi100.com/autonumber/auto?num=$num&key=$k";
    $autoRes = httpRequest($autoUrl);
    
    // 容错处理：如果请求空，可能是网络问题
    if (!$autoRes) return [['time'=>date('Y-m-d H:i'), 'status'=>'网络请求失败，请检查服务器网络']];

    $autoData = json_decode($autoRes, true);

    // 容错处理：如果返回不是数组，或者含有returnCode错误码
    if (empty($autoData) || isset($autoData['returnCode']) || !isset($autoData[0]['comCode'])) {
        $msg = $autoData['message'] ?? '单号识别失败(请检查Key/单号)';
        return [['time'=>date('Y-m-d H:i'), 'status'=>"⚠️ $msg"]];
    }
    
    $comCode = $autoData[0]['comCode'];

    // 2. 查询
    $paramArr = ['com' => $comCode, 'num' => $num];
    if ($comCode == 'shunfeng') $paramArr['phone'] = $phone;

    $param = json_encode($paramArr);
    $sign = strtoupper(md5($param . $k . $c));
    $postData = ['customer'=>$c, 'sign'=>$sign, 'param'=>$param];

    $res = httpRequest('https://poll.kuaidi100.com/poll/query.do', $postData);
    $data = json_decode($res, true);
    
    $logs = [];
    if (isset($data['message']) && $data['message'] == 'ok' && !empty($data['data'])) {
        foreach ($data['data'] as $t) {
            $logs[] = ['time' => $t['time'], 'status' => $t['context']];
        }
    } else {
        $msg = $data['message'] ?? '暂无轨迹';
        $logs[] = ['time'=>date('Y-m-d H:i'), 'status'=>"⚠️ $msg"];
    }
    return $logs;
}

// 增强版 CURL
function httpRequest($url, $postData = null) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // 允许重定向
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    
    if ($postData) {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
    }
    
    $res = curl_exec($ch);
    curl_close($ch);
    return $res;
}

function checkAdmin() { if(!isset($_SESSION['is_admin'])){echo json_encode(['code'=>403]);exit;} }

// --- 其他后台接口 ---
if($action=='admin_list'){checkAdmin();$p=max(1,intval($_GET['page']??1));$l=20;$all=json_decode(file_get_contents(DATA_PATH),true);if(!is_array($all))$all=[];$all=array_reverse($all);echo json_encode(['code'=>200,'data'=>['list'=>array_slice($all,($p-1)*$l,$l),'total'=>count($all),'page'=>$p,'limit'=>$l]]);exit;}
if($action=='import_data_json'){checkAdmin();$in=json_decode(file_get_contents('php://input'),true);$curr=json_decode(file_get_contents(DATA_PATH),true);if(!is_array($curr))$curr=[];$c=0;$pre=[];foreach($in as $row){if(!empty($row['phone'])){$t=trim($row['time']??'');if(is_numeric($t)&&$t>40000)$t=gmdate("m-d",($t-25569)*86400);elseif(!empty($t))$t=date('m-d',strtotime(str_replace(['.','/'],'-',$t)));else $t=date('m-d');$ni=['id'=>uniqid(),'phone'=>trim($row['phone']),'address'=>trim($row['address']??''),'register_time'=>$t,'tracking_number'=>trim($row['no']??''),'upload_time'=>date('Y-m-d H:i:s')];$curr[]=$ni;$c++;if($c<=50)$pre[]=$ni;}}file_put_contents(DATA_PATH,json_encode($curr,JSON_UNESCAPED_UNICODE));echo json_encode(['code'=>200,'msg'=>"导入{$c}条",'preview'=>$pre]);exit;}
if($action=='admin_stats'){checkAdmin();$all=json_decode(file_get_contents(DATA_PATH),true);$t=date('m-d');$tc=0;$m=[];if(is_array($all))foreach($all as $i){if(strpos($i['upload_time'],date('Y-m-d'))!==false)$tc++;$p=dp($i['address']);if($p){if(!isset($m[$p]))$m[$p]=0;$m[$p]++;}}$md=[];foreach($m as $k=>$v)$md[]=['name'=>$k,'value'=>$v];echo json_encode(['code'=>200,'data'=>['today'=>$tc,'total'=>is_array($all)?count($all):0,'mapData'=>$md]]);exit;}
function dp($s){$m=['北京'=>'北京','天津'=>'天津','上海'=>'上海','重庆'=>'重庆','河北'=>'河北','山西'=>'山西','辽宁'=>'辽宁','吉林'=>'吉林','黑龙江'=>'黑龙江','江苏'=>'江苏','浙江'=>'浙江','安徽'=>'安徽','福建'=>'福建','江西'=>'江西','山东'=>'山东','河南'=>'河南','湖北'=>'湖北','湖南'=>'湖南','广东'=>'广东','海南'=>'海南','四川'=>'四川','贵州'=>'贵州','云南'=>'云南','陕西'=>'陕西','甘肃'=>'甘肃','青海'=>'青海','台湾'=>'台湾','内蒙古'=>'内蒙古','广西'=>'广西','西藏'=>'西藏','宁夏'=>'宁夏','新疆'=>'新疆','香港'=>'香港','澳门'=>'澳门'];foreach($m as $k=>$v){if(mb_strpos($s,$k)!==false)return $v;}return null;}
if($action=='admin_delete'){checkAdmin();$id=$_POST['id'];$all=json_decode(file_get_contents(DATA_PATH),true);$n=[];foreach($all as $i)if($i['id']!==$id)$n[]=$i;file_put_contents(DATA_PATH,json_encode($n,JSON_UNESCAPED_UNICODE));echo json_encode(['code'=>200,'msg'=>'ok']);exit;}
if($action=='admin_clear_all'){checkAdmin();file_put_contents(DATA_PATH,json_encode([]));echo json_encode(['code'=>200,'msg'=>'ok']);exit;}
if($action=='save_settings'){checkAdmin();$c=json_decode(file_get_contents(SET_PATH),true);foreach($_POST as $k=>$v)$c[$k]=$v;file_put_contents(SET_PATH,json_encode($c,JSON_UNESCAPED_UNICODE));echo json_encode(['code'=>200,'msg'=>'ok']);exit;}
if($action=='upload_logo'){checkAdmin();if($_FILES['logo']['error']==0){$n='logo_'.time().'.png';move_uploaded_file($_FILES['logo']['tmp_name'],$n);$c=json_decode(file_get_contents(SET_PATH),true);$c['logo_img']=$n;file_put_contents(SET_PATH,json_encode($c,JSON_UNESCAPED_UNICODE));echo json_encode(['code'=>200,'msg'=>'ok','url'=>$n]);}exit;}
?>