package engine

import (
	"context"
	"fmt"
	"io"

	"gitoa.ru/go-4devs/mime"
	"gitoa.ru/go-4devs/templating/render"
)

func NewEncode(name string, encode func(w io.Writer, data interface{}) error, ext ...mime.Ext) Encode {
	return Encode{
		name:    name,
		encode:  encode,
		formats: ext,
	}
}

type Encode struct {
	encode  func(w io.Writer, data interface{}) error
	name    string
	formats []mime.Ext
}

func (e Encode) Support(_ context.Context, reference render.Reference) bool {
	return Support(reference, e.name, e.formats...)
}

func (e Encode) Load(context.Context, render.Reference) (render.Execute, error) {
	return func(_ context.Context, wr io.Writer, data interface{}, _ render.Params) error {
		if err := e.encode(wr, data); err != nil {
			return fmt.Errorf("%s engine:%w", e.name, err)
		}

		return nil
	}, nil
}