package util

import (
	"fmt"
	"reflect"
	"strconv"
)

const TIME_PARSE_LAYOUT = "2/1/2006"
const NilIntVal = int8(0)

func StringToIntPtr[T int8 | int32 | int64](s string) *T {
	var val T
	switch any(val).(type) {
	case int8, int32, int64:
		num, err := strconv.ParseInt(s, 10, 64)
		if err != nil {
			return nil
		}
		switch any(val).(type) {
		case int8:
			val := int8(num)
			return any(&val).(*T)
		case int32:
			val := int32(num)
			return any(&val).(*T)
		case int64:
			val := int64(num)
			return any(&val).(*T)
		default:
			return nil
		}
	default:
		fmt.Printf("Unsupported type: %s\n", reflect.TypeOf(val).Name())
		return nil
	}
}

func StringToStringPtr(s string) *string {
	if s == "" {
		return nil
	}

	return &s
}

func Pad(numStr string, size int32) string {
	for int32(len(numStr)) < size {
		numStr = "0" + numStr
	}

	return numStr
}