package tpl

import (
	"html/template"
	"strings"
	"time"
)

func (r *render) Methods() map[string]any {
	res := make(map[string]any, 1)

	res["dateFormat"] = func(dt time.Time) template.HTML {
		return template.HTML(dt.Format(time.DateTime))
	}

	res["today"] = func() template.HTML {
		return template.HTML(time.Now().Format("2006-01-02"))
	}

	res["threeMonth"] = func() template.HTML {
		return template.HTML(time.Now().AddDate(0, 3, 0).Format("2006-01-02"))
	}

	res["yearBegin"] = func() template.HTML {
		dt := time.Now()
		t := dt.AddDate(0, -int(dt.Month())+1, -dt.Day()+1)
		return template.HTML(t.Format("2006-01-02") + " 00:00:00")
	}

	res["monthBegin"] = func() template.HTML {
		dt := time.Now()
		t := dt.AddDate(0, 0, -dt.Day()+1)
		return template.HTML(t.Format("2006-01-02") + " 00:00:00")
	}

	res["monthEnd"] = func() template.HTML {
		dt := time.Now()
		t := dt.AddDate(0, 0, -dt.Day()+1).AddDate(0, 1, -1)
		return template.HTML(t.Format("2006-01-02") + " 23:59:59")
	}

	res["trimSpace"] = func(s string) template.HTML {
		return template.HTML(strings.TrimSpace(s))
	}

	res["expandTags"] = func(s []string) template.HTML {
		if len(s) == 0 {
			return template.HTML("")
		}
		if len(s) == 1 && s[0] == "all" {
			return template.HTML("")
		}
		return template.HTML(strings.Join(s, ","))
	}

	res["toString"] = func(b []byte) string {
		return string(b)
	}

	return res
}