Implement appointment reading

rechner.go

@@ -5,6 +5,8 @@ import (
 	"encoding/binary"
 	"fmt"
 	"strconv"
+	"strings"
+	"time"
 )
 
 func Sauce(malid int64, username string) string {
@@ -24,3 +26,20 @@ func Int64ToByte(yes int64) []byte {
 	n := binary.PutVarint(buf, yes)
 	return buf[:n]
 }
+
+func BytesToInt64AndDate(bytes []byte) (int64, time.Time, error) {
+	split := strings.Split(string(bytes), AppointSplit)
+	if len(split) != 2 {
+		return 0, time.Time{}, fmt.Errorf("invalid appointment split %s", string(bytes))
+	}
+	num, err := strconv.ParseInt(split[0], 10, 64)
+	if err != nil {
+		return num, time.Time{}, err
+	}
+	appoint, err := time.Parse(time.RFC3339, split[1])
+	return num, appoint, err
+}
+
+func Int64AndDateToBytes(num int64, appoint time.Time) []byte {
+	return []byte(fmt.Sprintf("%d%s%s", num, AppointSplit, appoint.Format(time.RFC3339)))
+}