339 lines
9.0 KiB
Go
339 lines
9.0 KiB
Go
package em3395ty
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"rain_monitor/models"
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"strconv"
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"strings"
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"time"
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"github.com/google/uuid"
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)
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// 涂鸦API配置
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type TuyaConfig struct {
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ClientID string
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Secret string
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BaseURL string
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}
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var config TuyaConfig
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// InitConfig 初始化涂鸦API配置
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func InitConfig(clientID, secret, baseURL string) {
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config = TuyaConfig{
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ClientID: clientID,
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Secret: secret,
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BaseURL: baseURL,
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}
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log.Printf("EM3395TY API配置已初始化，ClientID: %s, BaseURL: %s", clientID, baseURL)
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}
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// 计算HMAC-SHA256签名
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func calculateSignature(secret, stringToSign string) string {
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h := hmac.New(sha256.New, []byte(secret))
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h.Write([]byte(stringToSign))
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return hex.EncodeToString(h.Sum(nil))
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}
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// GetAccessToken 获取访问令牌
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func GetAccessToken() (string, error) {
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t := strconv.FormatInt(time.Now().UnixNano()/1e6, 10) // 13位时间戳
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nonce := uuid.New().String() // 生成随机UUID
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url := "/v1.0/token?grant_type=1"
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// 构建stringToSign
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contentSHA256 := "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" // 空body的SHA256值
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stringToSign := fmt.Sprintf("GET\n%s\n\n%s", contentSHA256, url)
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// 构建待签名字符串
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strToHash := config.ClientID + t + nonce + stringToSign
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// 使用HMAC-SHA256计算签名
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signature := calculateSignature(config.Secret, strToHash)
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signatureUpper := strings.ToUpper(signature)
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// 构建请求头
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req, err := http.NewRequest("GET", config.BaseURL+url, nil)
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if err != nil {
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return "", err
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}
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req.Header.Set("client_id", config.ClientID)
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req.Header.Set("sign", signatureUpper)
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req.Header.Set("sign_method", "HMAC-SHA256")
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req.Header.Set("t", t)
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req.Header.Set("nonce", nonce)
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// 发起GET请求
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return "", err
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}
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// 解析响应
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var tokenResp models.EM3395TYTokenResponse
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if err := json.Unmarshal(body, &tokenResp); err != nil {
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return "", err
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}
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if !tokenResp.Success {
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return "", fmt.Errorf("获取token失败: %s", string(body))
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}
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return tokenResp.Result.AccessToken, nil
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}
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// GetDeviceInfo 获取设备信息
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func GetDeviceInfo(accessToken, deviceID string) (*models.EM3395TYDeviceInfo, error) {
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t := strconv.FormatInt(time.Now().UnixNano()/1e6, 10) // 13位时间戳
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nonce := uuid.New().String() // 生成随机UUID
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url := fmt.Sprintf("/v2.0/cloud/thing/%s", deviceID)
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// 构建stringToSign
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contentSHA256 := "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" // 空body的SHA256值
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stringToSign := fmt.Sprintf("GET\n%s\n\n%s", contentSHA256, url)
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// 构建待签名字符串
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strToHash := config.ClientID + accessToken + t + nonce + stringToSign
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// 使用HMAC-SHA256计算签名
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signature := calculateSignature(config.Secret, strToHash)
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signatureUpper := strings.ToUpper(signature)
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// 构建请求头
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req, err := http.NewRequest("GET", config.BaseURL+url, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("client_id", config.ClientID)
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req.Header.Set("access_token", accessToken)
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req.Header.Set("sign", signatureUpper)
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req.Header.Set("sign_method", "HMAC-SHA256")
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req.Header.Set("t", t)
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req.Header.Set("nonce", nonce)
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// 发起GET请求
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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// 解析响应
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var deviceInfo models.EM3395TYDeviceInfo
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if err := json.Unmarshal(body, &deviceInfo); err != nil {
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return nil, err
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}
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return &deviceInfo, nil
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}
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// GetDeviceStatus 获取设备状态
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func GetDeviceStatus(accessToken, deviceID string) (*models.EM3395TYDeviceStatus, error) {
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t := strconv.FormatInt(time.Now().UnixNano()/1e6, 10) // 13位时间戳
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nonce := uuid.New().String() // 生成随机UUID
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url := fmt.Sprintf("/v1.0/iot-03/devices/%s/status", deviceID)
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// 构建stringToSign
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contentSHA256 := "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" // 空body的SHA256值
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stringToSign := fmt.Sprintf("GET\n%s\n\n%s", contentSHA256, url)
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// 构建待签名字符串
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strToHash := config.ClientID + accessToken + t + nonce + stringToSign
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// 使用HMAC-SHA256计算签名
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signature := calculateSignature(config.Secret, strToHash)
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signatureUpper := strings.ToUpper(signature)
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// 构建请求头
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req, err := http.NewRequest("GET", config.BaseURL+url, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("client_id", config.ClientID)
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req.Header.Set("access_token", accessToken)
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req.Header.Set("sign", signatureUpper)
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req.Header.Set("sign_method", "HMAC-SHA256")
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req.Header.Set("t", t)
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req.Header.Set("nonce", nonce)
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// 发起GET请求
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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// 首先解析为临时结构
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var tempResponse struct {
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Result []models.EM3395TYStatusItem `json:"result"`
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Success bool `json:"success"`
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T int64 `json:"t"`
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TID string `json:"tid"`
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}
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if err := json.Unmarshal(body, &tempResponse); err != nil {
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return nil, err
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}
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// 创建最终响应
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deviceStatus := &models.EM3395TYDeviceStatus{
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Success: tempResponse.Success,
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T: tempResponse.T,
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TID: tempResponse.TID,
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}
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// 将临时结构中的数据转换为我们的结构化数据
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statusData := models.EM3395TYStatusData{}
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// 遍历状态项并填充结构体
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for _, item := range tempResponse.Result {
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switch item.Code {
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case "temp_current":
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if val, ok := item.Value.(float64); ok {
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statusData.TempCurrent = int(val)
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}
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case "humidity_value":
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if val, ok := item.Value.(float64); ok {
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statusData.HumidityValue = int(val)
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}
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case "battery_percentage":
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if val, ok := item.Value.(float64); ok {
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statusData.BatteryPercentage = int(val)
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}
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case "temp_unit_convert":
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if val, ok := item.Value.(string); ok {
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statusData.TempUnitConvert = val
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}
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case "windspeed_unit_convert":
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if val, ok := item.Value.(string); ok {
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statusData.WindspeedUnitConvert = val
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}
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case "pressure_unit_convert":
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if val, ok := item.Value.(string); ok {
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statusData.PressureUnitConvert = val
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}
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case "rain_unit_convert":
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if val, ok := item.Value.(string); ok {
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statusData.RainUnitConvert = val
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}
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case "bright_unit_convert":
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if val, ok := item.Value.(string); ok {
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statusData.BrightUnitConvert = val
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}
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case "temp_current_external":
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if val, ok := item.Value.(float64); ok {
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statusData.TempCurrentExternal = int(val)
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}
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case "humidity_outdoor":
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if val, ok := item.Value.(float64); ok {
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statusData.HumidityOutdoor = int(val)
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}
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case "temp_current_external_1":
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if val, ok := item.Value.(float64); ok {
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statusData.TempCurrentExternal1 = int(val)
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}
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case "humidity_outdoor_1":
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if val, ok := item.Value.(float64); ok {
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statusData.HumidityOutdoor1 = int(val)
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}
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case "temp_current_external_2":
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if val, ok := item.Value.(float64); ok {
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statusData.TempCurrentExternal2 = int(val)
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}
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case "humidity_outdoor_2":
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if val, ok := item.Value.(float64); ok {
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statusData.HumidityOutdoor2 = int(val)
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}
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case "temp_current_external_3":
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if val, ok := item.Value.(float64); ok {
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statusData.TempCurrentExternal3 = int(val)
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}
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case "humidity_outdoor_3":
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if val, ok := item.Value.(float64); ok {
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statusData.HumidityOutdoor3 = int(val)
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}
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case "atmospheric_pressture":
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if val, ok := item.Value.(float64); ok {
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statusData.AtmosphericPressure = int(val)
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}
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case "pressure_drop":
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if val, ok := item.Value.(float64); ok {
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statusData.PressureDrop = int(val)
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}
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case "windspeed_avg":
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if val, ok := item.Value.(float64); ok {
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statusData.WindspeedAvg = int(val)
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}
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case "windspeed_gust":
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if val, ok := item.Value.(float64); ok {
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statusData.WindspeedGust = int(val)
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}
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case "rain_1h":
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if val, ok := item.Value.(float64); ok {
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statusData.Rain1h = int(val)
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}
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case "rain_24h":
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if val, ok := item.Value.(float64); ok {
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statusData.Rain24h = int(val)
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}
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case "rain_rate":
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if val, ok := item.Value.(float64); ok {
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statusData.RainRate = int(val)
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}
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case "uv_index":
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if val, ok := item.Value.(float64); ok {
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statusData.UVIndex = int(val)
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}
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case "dew_point_temp":
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if val, ok := item.Value.(float64); ok {
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statusData.DewPointTemp = int(val)
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}
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case "feellike_temp":
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if val, ok := item.Value.(float64); ok {
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statusData.FeellikeTemp = int(val)
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}
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case "heat_index":
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if val, ok := item.Value.(float64); ok {
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statusData.HeatIndex = int(val)
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}
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case "windchill_index":
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if val, ok := item.Value.(float64); ok {
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statusData.WindchillIndex = int(val)
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}
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}
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}
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deviceStatus.Result = statusData
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return deviceStatus, nil
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}
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