package change

import (
	"sort"
	"strings"

	"github.com/gogf/gf/v2/os/gtime"
)

func uniqueStrings(list []string) []string {
	if len(list) == 0 {
		return nil
	}
	seen := make(map[string]struct{}, len(list))
	result := make([]string, 0, len(list))
	for _, item := range list {
		item = strings.TrimSpace(item)
		if item == "" {
			continue
		}
		if _, ok := seen[item]; ok {
			continue
		}
		seen[item] = struct{}{}
		result = append(result, item)
	}
	sort.Strings(result)
	return result
}

func rowsToIccids(rows []*Row) []string {
	iccids := make([]string, 0, len(rows))
	for _, row := range rows {
		if row == nil {
			continue
		}
		iccid := strings.TrimSpace(row.Iccid)
		if iccid != "" {
			iccids = append(iccids, iccid)
		}
	}
	return uniqueStrings(iccids)
}

func formatTime(t *gtime.Time) string {
	if t == nil {
		return ""
	}
	return t.Format("Y-m-d H:i:s")
}