package templating

import (
	"context"
	"fmt"
	"io"
	"sync"

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

var (
	exec = render.New(parser.Name)
	mu   = sync.Mutex{}
)

func SetParser(parser render.Parser) {
	mu.Lock()
	defer mu.Unlock()

	exec = exec.WithParser(parser)
}

func AddEngine(engine ...render.Engine) {
	mu.Lock()
	defer mu.Unlock()

	exec.Add(engine...)
}

func Execute(ctx context.Context, wr io.Writer, name string, data interface{}, opts ...render.Option) error {
	if err := exec.Execute(ctx, wr, name, data, opts...); err != nil {
		return fmt.Errorf("templating engine:%w", err)
	}

	return nil
}