package builtins

import (
	"context"
	"time"
	"ucl.lmika.dev/ucl"
)

func Time() ucl.Module {
	return ucl.Module{
		Name: "time",
		Builtins: map[string]ucl.BuiltinHandler{
			"from-unix": timeFromUnix,
			"sleep":     timeSleep,
		},
	}
}

func timeFromUnix(ctx context.Context, args ucl.CallArgs) (any, error) {
	var ux int

	if err := args.Bind(&ux); err != nil {
		return nil, err
	}

	return time.Unix(int64(ux), 0).UTC(), nil
}

func timeSleep(ctx context.Context, args ucl.CallArgs) (any, error) {
	var secs int

	if err := args.Bind(&secs); err != nil {
		return nil, err
	}

	select {
	case <-time.After(time.Duration(secs) * time.Second):
		return nil, nil
	case <-ctx.Done():
		return nil, ctx.Err()
	}
}