package ali_cloud_tool

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/pkg/errors"
	"io"
	"log"
	"net/http"
	"net/url"
	"strings"
	"time"
)

type AliCloudRealNameClient struct {
	AppCode string
	Host    string
}

func NewAliCloudRealNameClient(appCode string) *AliCloudRealNameClient {
	return &AliCloudRealNameClient{
		AppCode: appCode,
		Host:    "https://zidv2.market.alicloudapi.com/idcheck/Post",
	}
}

// 调用实名认证API
func (s *AliCloudRealNameClient) CallRealNameAuthAPI(ctx context.Context, name, idCard string) (*RealNameAuthData, error) {
	// 验证输入
	if strings.TrimSpace(name) == "" || strings.TrimSpace(idCard) == "" {
		return nil, errors.New("姓名和身份证号不能为空")
	}

	// 设置参数
	params := url.Values{}
	params.Add("realName", name)
	params.Add("cardNo", idCard)

	// 构建完整URL
	fullURL, err := url.JoinPath(s.Host)
	if err != nil {
		return nil, fmt.Errorf("构建实名认证URL失败: %w, 姓名:%s, 身份证号:%s", err, name, idCard)
	}

	// 创建HTTP客户端
	client := &http.Client{
		Timeout: 2 * time.Second,
	}

	// 创建POST请求
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, fullURL, strings.NewReader(params.Encode()))
	if err != nil {
		return nil, fmt.Errorf("创建实名认证请求失败: %w, 姓名:%s, 身份证号:%s", err, name, idCard)
	}

	// 设置请求头
	req.Header.Set("Authorization", "APPCODE "+s.AppCode)
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8")

	// 发送请求
	resp, err := client.Do(req)
	if err != nil {
		return nil, fmt.Errorf("发送实名认证请求失败: %w, 姓名:%s, 身份证号:%s", err, name, idCard)
	}
	defer func() {
		if closeErr := resp.Body.Close(); closeErr != nil {
			log.Printf("关闭实名认证响应体失败: %v, 姓名:%s, 身份证号:%s", closeErr, name, idCard)
		}
	}()

	// 读取响应体
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("读取实名认证响应失败: %w, 姓名:%s, 身份证号:%s", err, name, idCard)
	}

	// 解析JSON响应
	var result RealNameAuthData
	if err = json.Unmarshal(body, &result); err != nil {
		return nil, fmt.Errorf("解析实名认证响应失败: %w, 响应内容:%s, 姓名:%s, 身份证号:%s", err, string(body), name, idCard)
	}

	// 检查API返回的错误码
	if result.ErrorCode != 0 {
		return &result, fmt.Errorf("实名认证接口返回错误, 错误码:%d, 原因:%s, 姓名:%s, 身份证号:%s",
			result.ErrorCode, result.Reason, name, idCard)
	}

	// 检查认证结果
	if !result.Result.Isok {
		return &result, fmt.Errorf("实名认证不通过, 原因:%s, 姓名:%s, 身份证号:%s",
			result.Reason, name, idCard)
	}

	return &result, nil
}

type RealNameAuthData struct {
	ErrorCode int    `json:"error_code"`
	Reason    string `json:"reason"`
	Result    struct {
		Realname    string `json:"realname"`
		Idcard      string `json:"idcard"`
		Isok        bool   `json:"isok"`
		IdCardInfor struct {
			Province string `json:"province"`
			City     string `json:"city"`
			District string `json:"district"`
			Area     string `json:"area"`
			Sex      string `json:"sex"`
			Birthday string `json:"birthday"`
		} `json:"IdCardInfor"`
	} `json:"result"`
	Sn string `json:"sn"`
}