<?php
namespace app\admin\addresmart;

class AppointmentParser
{
    public function parse(string $text): ?array
    {
        if ($this->isFormatA($text)) {
            return $this->extractFormatA($text);
        }

        if ($this->isFormatB($text)) {
            return $this->extractFormatB($text);
        }

        return null;
    }

    // --- Format A ---
    private function isFormatA(string $text): bool
    {
        $requiredFields = ['姓名：', '电话：', '地址：', '日期：', '时间：', '商品名称：'];
        foreach ($requiredFields as $field) {
            if (mb_strpos($text, $field) === false) {
                return false;
            }
        }
        return true;
    }

    private function extractFormatA(string $text): array
    {
        $date = $this->match('/日期：(\d{4}-\d{2}-\d{2})/', $text);
        $timeRange = $this->match('/时间：([\d:]+)~[\d:]+/', $text);
        $datetime = $date && $timeRange ? "$date $timeRange" : null;

        // 提取电话号码和分机号
        $phoneMatches = [];
        preg_match('/电话：.*?(\d{11})[^\d]{0,5}(\d{3,5})?/u', $text, $phoneMatches);
        $phone = $phoneMatches[1] ?? null;
        $ext = $phoneMatches[2] ?? null;

        return [
            'name'     => $this->match('/姓名：(.+)/u', $text),
            'phone'    => $phone,
            'ext'      => $ext,
            'address'  => $this->match('/地址：(.+)/u', $text),
            'date'     => $date,
            'time'     => $timeRange,
            'datetime' => $datetime,
            'project'  => $this->match('/商品名称：(.+)/u', $text),
        ];
    }


    // --- Format B ---
    private function isFormatB(string $text): bool
    {
        $requiredFields = ['预约项目：', '预约地址：', '联系人：', '联系电话：', '预约时间：'];
        foreach ($requiredFields as $field) {
            if (mb_strpos($text, $field) === false) {
                return false;
            }
        }
        return true;
    }

    private function extractFormatB(string $text): array
    {
        $date = $this->match('/预约时间：(\d{4}-\d{2}-\d{2})/', $text);
        $timeRange = $this->match('/预约时间：\d{4}-\d{2}-\d{2} ([\d:]+)-[\d:]+/', $text);
        $datetime = $date && $timeRange ? "$date $timeRange" : null;

        // 提取电话号码和分机号
        $phoneMatches = [];
        preg_match('/联系电话：.*?(\d{11})(?:\D{0,5}(\d{3,5}))?/u', $text, $phoneMatches);
        $phone = $phoneMatches[1] ?? null;
        $ext = $phoneMatches[2] ?? null;

        return [
            'name'     => $this->match('/联系人：([^\n]+)/u', $text),
            'phone'    => $phone,
            'ext'      => $ext,
            'address'  => $this->match('/预约地址：(.+)/u', $text),
            'date'     => $date,
            'time'     => $timeRange,
            'datetime' => $datetime,
            'project'  => $this->match('/预约项目：(.+)/u', $text),
        ];
    }

    // --- 通用正则匹配 ---
    private function match(string $pattern, string $text): ?string
    {
        if (preg_match($pattern, $text, $matches)) {
            return trim($matches[1]);
        }
        return null;
    }
}