<?php
header('Content-Type: application/json');

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['birthdate'])) {
    $birthdate = new DateTime($_POST['birthdate']);
    
    // 计算西方星座
    $month = $birthdate->format('n');
    $day = $birthdate->format('j');
    
    $westernZodiac = '';
    if (($month == 3 && $day >= 21) || ($month == 4 && $day <= 19)) {
        $westernZodiac = '白羊座';
    } elseif (($month == 4 && $day >= 20) || ($month == 5 && $day <= 20)) {
        $westernZodiac = '金牛座';
    } elseif (($month == 5 && $day >= 21) || ($month == 6 && $day <= 20)) {
        $westernZodiac = '双子座';
    } elseif (($month == 6 && $day >= 21) || ($month == 7 && $day <= 22)) {
        $westernZodiac = '巨蟹座';
    } elseif (($month == 7 && $day >= 23) || ($month == 8 && $day <= 22)) {
        $westernZodiac = '狮子座';
    } elseif (($month == 8 && $day >= 23) || ($month == 9 && $day <= 22)) {
        $westernZodiac = '处女座';
    } elseif (($month == 9 && $day >= 23) || ($month == 10 && $day <= 22)) {
        $westernZodiac = '天秤座';
    } elseif (($month == 10 && $day >= 23) || ($month == 11 && $day <= 21)) {
        $westernZodiac = '天蝎座';
    } elseif (($month == 11 && $day >= 22) || ($month == 12 && $day <= 21)) {
        $westernZodiac = '射手座';
    } elseif (($month == 12 && $day >= 22) || ($month == 1 && $day <= 19)) {
        $westernZodiac = '摩羯座';
    } elseif (($month == 1 && $day >= 20) || ($month == 2 && $day <= 18)) {
        $westernZodiac = '水瓶座';
    } else {
        $westernZodiac = '双鱼座';
    }
    
    // 计算中国生肖
    $year = $birthdate->format('Y');
    $chineseZodiac = '';
    $zodiacAnimals = ['鼠', '牛', '虎', '兔', '龙', '蛇', '马', '羊', '猴', '鸡', '狗', '猪'];
    $chineseZodiac = $zodiacAnimals[($year - 1900) % 12];
    
    echo json_encode([
        'westernZodiac' => $westernZodiac,
        'chineseZodiac' => $chineseZodiac
    ]);
} else {
    echo json_encode(['error' => '无效的请求']);
}