// labstack/echo requires a custom TemplateRenderer.
// This module implements it.

package http

import (
	"io"
	"text/template"

	"github.com/labstack/echo"
)

// Template is a data-container for a template.
type Template struct {
	Templates *template.Template
}

// Render injects the echo.Context into the template renderer.
func (t *Template) Render(w io.Writer, name string, data interface{}, c echo.Context) error {
	return t.Templates.ExecuteTemplate(w, name, data)
}

// NewTemplateRenderer returns an initialized Template and injects the patched Renderer.
func NewTemplateRenderer(e *echo.Echo, paths ...string) {
	tmpl := &template.Template{}
	for i := range paths {
		template.Must(tmpl.ParseGlob(paths[i]))
	}
	t := newTemplate(tmpl)
	e.Renderer = t
}

func newTemplate(templates *template.Template) echo.Renderer {
	return &Template{
		Templates: templates,
	}
}