package timex

import (
	"fmt"
	"time"
)

func ParseTimeFlexible(value string) (*time.Time, error) {
	if value == "" {
		return nil, nil // ⭐ 空字符串 → 不限时间
	}

	layouts := []string{
		"2006-01-02 15:04:05",
		"2006-01-02 15:04",
		"2006-01-02",
		"2006-01",
		time.RFC3339,
	}

	for _, layout := range layouts {
		t, err := time.Parse(layout, value)
		if err == nil {
			return &t, nil
		}
	}

	return nil, fmt.Errorf("unsupported time format: %s", value)
}