package acceleronix

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"encoding/json"
	"fwh-toolbox-server/utils/httpClient"
	"net/http"
	"strconv"
	"time"

	"go.uber.org/zap"
)

const (
	mainUrl                 = "https://cmp.acceleronix.io/gateway/openapi"
	appKey                  = "0cE57qK03qsA9158"
	appSecret               = "6051y5YS"
	timeout   time.Duration = 30 * time.Second // SmartHub请求超时30s
)

var acceleronixHttpClient = httpClient.HttpClient{}

func makeSignature(timestamp, requestBody string) string {
	message := appKey + timestamp + requestBody

	// 创建 HMAC-SHA256
	h := hmac.New(sha256.New, []byte(appSecret))

	// 写入数据
	h.Write([]byte(message))

	// 计算摘要
	signature := h.Sum(nil)

	// hex 编码
	return hex.EncodeToString(signature)
}

func bodyToStableString(body any) (string, error) {
	if body == nil {
		return "", nil
	}

	switch v := body.(type) {
	case string:
		return v, nil

	case []byte:
		return string(v), nil

	default:
		b, err := json.Marshal(v)
		if err != nil {
			return "", err
		}
		return string(b), nil
	}
}

func acceleronixHttpPost(url string, body any) (*httpClient.Response, error) {
	t := timeout
	timestamp := strconv.FormatInt(time.Now().Unix(), 10)

	bodyStr, err := bodyToStableString(body)
	if err != nil {
		zap.L().Error("body marshal failed.", zap.Any("body", body), zap.String("err", err.Error()))
		return nil, err
	}

	opt := httpClient.HttpClientOptions{
		Timeout: &t,
		Header: &http.Header{
			"APP-Key":   {appKey},
			"Signature": {makeSignature(timestamp, bodyStr)},
			"Timestamp": {timestamp},
			"Accept":    {"application/json", "text/plain", "*/*"},
		},
	}
	return acceleronixHttpClient.HttpPost(mainUrl+url, body, &opt)
}