feat: add sqlType

sqlType/slice.num.go

@@ -0,0 +1,71 @@
+package sqlType
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/spf13/cast"
+)
+
+type SliceNum[T ~int | ~int64 | ~uint | ~uint64 | ~uint32 | ~int32] []T
+
+func (n *SliceNum[T]) Scan(val interface{}) error {
+	str, ok := val.(string)
+	if !ok {
+		return ErrConvertScanVal
+	}
+
+	length := len(str)
+
+	if length <= 0 {
+		*n = make(SliceNum[T], 0)
+		return nil
+	}
+
+	if str[0] != '{' || str[length-1] != '}' {
+		return ErrInvalidScanVal
+	}
+
+	str = str[1 : length-1]
+	if len(str) == 0 {
+		*n = make(SliceNum[T], 0)
+		return nil
+	}
+
+	numStrs := strings.Split(str, ",")
+	nums := make([]T, len(numStrs))
+
+	for idx := range numStrs {
+		num, err := cast.ToInt64E(strings.TrimSpace(numStrs[idx]))
+		if err != nil {
+			return fmt.Errorf("%w: can't convert to %T", ErrConvertVal, T(0))
+		}
+
+		nums[idx] = T(num)
+	}
+
+	*n = nums
+
+	return nil
+}
+
+func (n SliceNum[T]) Value() (driver.Value, error) {
+	if n == nil {
+		return "{}", nil
+	}
+
+	if len(n) == 0 {
+		return "{}", nil
+	}
+
+	ss := make([]string, 0, len(n))
+	for idx := range n {
+		ss = append(ss, strconv.Itoa(int(n[idx])))
+	}
+
+	s := strings.Join(ss, ", ")
+
+	return fmt.Sprintf("{%s}", s), nil
+}