package common

import (
	"net/http"
)

//WriteContentType set the content-type header
func WriteContentType(w http.ResponseWriter, value []string) {
	header := w.Header()
	if val := header["Content-Type"]; len(val) == 0 {
		header["Content-Type"] = value
	}
}

// Render interface is to be implemented by JSON, XML, HTML, YAML and so on.
type Render interface {
	// Render writes data with custom ContentType.
	Render(http.ResponseWriter) error
	// WriteContentType writes custom ContentType.
	WriteContentType(w http.ResponseWriter)
}

//List hold the defined render (obj, options)
var List = map[string]func(interface{}, map[string]string) Render{}