<?php
// 文案代理：随机或指定来源（yiyan/dujitang/renjian），返回 { text }
header('Content-Type: application/json; charset=utf-8');

$type = strtolower($_GET['type'] ?? '');
$map = [
    'dujitang'=> 'https://api.iyuns.com/api/dujitang',
    'renjian' => 'https://api.iyuns.com/api/renjian',
    'ktff'=> 'https://v.api.aa1.cn/api/api-wenan-ktff/index.php?type=5', // 新增文艺文案
    'yiyan'=> 'https://v.api.aa1.cn/api/yiyan/index.php?type=json', // 新增纯文本一言
    'wenan_anwei'=> 'https://v.api.aa1.cn/api/api-wenan-anwei/index.php?type=json', // 新增文艺文案
    'wenan_gaoxiao'=> 'https://v.api.aa1.cn/api/api-wenan-gaoxiao/index.php?aa1=json', // 新增文艺文案
    'wenan_shenhuifu'=> 'https://v.api.aa1.cn/api/api-wenan-shenhuifu/index.php?aa1=json', // 新增文艺文案
];
if (!$type || !isset($map[$type])) {
    $keys = array_keys($map);
    $type = $keys[array_rand($keys)];
}
$endpoint = $map[$type];

function fetch_json($url) {
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_CONNECTTIMEOUT => 8,
        CURLOPT_TIMEOUT => 12,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_SSL_VERIFYHOST => false,
        CURLOPT_USERAGENT => 'DiscussionProxy/1.0',
    ]);
    $body = curl_exec($ch);
    $err  = curl_error($ch);
    curl_close($ch);
    if ($err) { return null; }
    $json = json_decode($body, true);
    return is_array($json) ? $json : null;
}

$resp = fetch_json($endpoint);
$text = '';
if ($resp && ($resp['code'] ?? 0) == 200) {
    $fields = ['yiyan','data','text','anwei','gaoxiao','shenhuifu'];
    foreach ($fields as $k) {
        $t = trim((string)($resp[$k] ?? ''));
        if ($t !== '') { $text = $t; break; }
        if (is_array($resp['data'] ?? null)) {
            $t = trim((string)($resp['data'][$k] ?? ''));
            if ($t !== '') { $text = $t; break; }
        }
    }
    $text = preg_replace('/[`]/', '', $text);
}
if (!$text) {
    // 远程失败时，回退到本地随机文案
    $root = __DIR__ . '/../texts';
    $pool = [];
    if (is_dir($root)) {
        $rii = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($root));
        foreach ($rii as $file) {
            if ($file->isFile() && strtolower($file->getFilename()) === 'all.json') {
                $json = @file_get_contents($file->getPathname());
                if ($json) {
                    $arr = json_decode($json, true);
                    if (is_array($arr)) {
                        foreach ($arr as $it) {
                            $t = trim((string)($it['text'] ?? ''));
                            if ($t !== '') { $pool[] = $t; }
                        }
                    }
                }
            }
        }
    }
    if (!empty($pool)) {
        $text = $pool[array_rand($pool)];
        $type = 'local';
    } else {
        // 如果本地也没有，则使用一个默认文案
        $text = '今天也要元气满满！';
    }
}

echo json_encode(['text' => $text, 'source' => $type], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);