<?php

namespace App\Service\Weixin;

use Exception;

class WxTemplateMessageService extends WeixinService
{
    /**
     * 发送微信模板消息
     *
     * @param string      $templateKey 模板配置key（对应 config 中的 template_map）
     * @param array       $dataData 模板参数（key 对应 config 中定义）
     * @param array       $options [
     *                                'pagepath' => '',  // 小程序路径
     *                                'url' => '',       // 网页路径
     *                                'openid' => '',    // 可选，优先使用
     *                             ]
     * @return array [bool, string]
     */
    public function sendTemplateMessage(string $templateKey, array $dataData, array $options = []): array
    {
        try {
            $config = config("wx_msg.template_map.$templateKey");
            if (!$config) return [false, "微信消息模板键值不存在: {$templateKey}"];

            $openid = $options['openid'] ?? "";
            if (empty($openid)) return [false, "openid 不能为空"];

            list($tokenOk, $token) = $this->getTokenSTABLE();
            if (! $tokenOk) return [false, $token];

            $jumpType = $config['jump_type'] ?? '';
            $payload = [
                'touser' => $openid,
                'template_id' => $config['tmp_id'],
                'data' => $this->buildTemplateData($config, $dataData, $options),
            ];

            // 动态跳转处理
            if ($jumpType === 'h5') {
                $payload['url'] = $options['url'] ?? '';
            } elseif ($jumpType === 'mp') {
                if(empty($options['pagepath'])){
                    $payload['url'] = '';
                }else{
                    $payload['miniprogram'] = [
                        'appid' => config('wx_msg.appid'),
                        'pagepath' => $options['pagepath'] ?? '',
                    ];
                }
            }

            $url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token={$token}";
            $res = $this->curlOpen($url, ['post' => json_encode($payload, JSON_UNESCAPED_UNICODE)]);
            $res = json_decode($res, true);

            if (isset($res['errcode']) && $res['errcode'] === 0) return [true, ''];

            return [false , $res['errmsg']];
        } catch (Exception $e) {
            return [false, $e->getMessage()];
        }
    }

    /**
     * 构建模板数据结构
     */
    protected function buildTemplateData(array $config, array $dataData, array $options = []): array
    {
        $result = [];

        foreach ($config['params'] as $key => $field) {
            $value = $dataData[$key] ?? '';
            $maxLen = $this->getWxFieldMaxLength($field);
            $value_f = $this->safeWxValue((string)$value, $maxLen);
            $result[$field] = ['value' => $value_f, 'color' => '#173177'];
        }

        return $result;
    }

    /**
     * 微信字段类型最大长度映射
     */
    protected function getWxFieldMaxLength(string $type): int
    {
        $map = [
            'thing' => 20,
            'thing1' => 20,
            'thing2' => 20,
            'thing3' => 20,
            'thing4' => 20,
            'thing5' => 20,
            'character_string' => 32,
            'character_string1' => 32,
            'character_string2' => 32,
            'character_string3' => 32,
            'number' => 10,
            'amount' => 10,
            'time' => 20,
            'date' => 20,
            'phone_number' => 11,
            'car_number' => 10,
        ];

        // 截取字段类型前缀（比如 thing5 → thing）
        $prefix = preg_replace('/\d+$/', '', $type);
        return $map[$type] ?? $map[$prefix] ?? 30;
    }

    /**
     * 安全处理微信模板值（截断 + 清理）
     */
    protected function safeWxValue(string $value, int $maxLen): string
    {
        $value = trim(strip_tags($value)); // 去除HTML标签
        $value = preg_replace('/\s+/', ' ', $value); // 合并空白字符

        // 多字节安全截断（支持中文）
        if (mb_strlen($value, 'UTF-8') > $maxLen) {
            $value = mb_substr($value, 0, $maxLen - 1, 'UTF-8') . '…';
        }

        return $value;
    }
}