package datex

import (
	"fmt"
	"regexp"
	"strconv"
	"strings"
	"time"

	aw "github.com/deanishe/awgo"

	"gitea.micah.wiki/pandora/alfred/model"
	"gitea.micah.wiki/pandora/alfred/pkg/stringx"
)

var (
	regexpTimestamp      = regexp.MustCompile(`^[1-9]{1}\d+$`)
	yyyyMMddHHMMSSLayout = "2006-01-02 15:04:05"
	moreLayouts          = []string{
		"2006-01-02",
		"2006-01-02 15:04",
		"2006-01-02 15:04:05",
	}
)

func Do(args []string) []*model.Item {
	if len(args) == 0 {
		return nil
	}
	// 处理 now
	input := strings.Join(args, " ")
	if input == "now" || input == "" {
		input = fmt.Sprintf("%d", time.Now().Unix())
	}
	items := make([]*model.Item, 0)
	if regexpTimestamp.MatchString(input) {
		v, err := strconv.ParseInt(input, 10, 32)
		if err != nil {
			return nil
		}
		value := time.Unix(v, 0).Format(yyyyMMddHHMMSSLayout)
		items = append(items, &model.Item{
			Title:    value,
			Subtitle: stringx.NewStrPoint(yyyyMMddHHMMSSLayout),
			Arg:      []string{"copytext", value},
			Valid:    true,
			Icon:     aw.IconClock,
		})
	} else {
		for _, layout := range moreLayouts {
			v, err := time.Parse(layout, input)
			if err != nil {
				continue
			}
			value := fmt.Sprintf("%d", v.Unix())
			items = append(items, &model.Item{
				Title:    value,
				Subtitle: stringx.NewStrPoint(layout),
				Arg:      []string{"copytext", value},
				Valid:    true,
				Icon:     aw.IconClock,
			})
		}
	}
	if len(items) == 0 {
		return nil
	}
	return items
}