fix: batch point sending problem

go.mod

@@ -1,6 +1,6 @@
 module git.paulbsd.com/paulbsd/weather
 
-go 1.19
+go 1.21
 
 require (
 	github.com/influxdata/influxdb1-client v0.0.0-20220302092344-a9ab5670611c

src/data/main.go

@@ -3,7 +3,7 @@ package data
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 
@@ -33,7 +33,7 @@ func FetchData(c *config.Config, city string) (Data, error) {
 
 	defer r.Body.Close()
 
-	b, err := ioutil.ReadAll(r.Body)
+	b, err := io.ReadAll(r.Body)
 	if err != nil {
 		return Data{}, err
 	}
@@ -84,10 +84,11 @@ func SendDataToInflux(c *config.Config, d Data) error {
 		}
 
 		bp.AddPoint(point)
-		err = httpClient.Write(bp)
-		if err != nil {
-			return err
-		}
+	}
+
+	err = httpClient.Write(bp)
+	if err != nil {
+		return err
 	}
 
 	return nil