package helpers

import (
	"time"

	"github.com/flosch/pongo2/v6"
)

func TemplTimeDiff(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, *pongo2.Error) {
	if !in.IsTime() {
		return pongo2.AsSafeValue("invalid time"), nil
	}

	start := in.Time()
	now := time.Now()
	diff := now.Sub(start)

	return pongo2.AsSafeValue(diff.Milliseconds()), nil
}