/*
 * Copyright (C) 2024 Jonni Liljamo <jonni@liljamo.com>
 *
 * This file is licensed under AGPL-3.0-or-later, see NOTICE and LICENSE for
 * more information.
 */

// Package renderer implements templ rendering.
package renderer

import (
	"context"
	"net/http"

	"github.com/a-h/templ"
	"github.com/gin-gonic/gin/render"
)

// TemplRender holds the required info for rendering templ components.
type TemplRender struct {
	Code int
	Data templ.Component
}

// Render renders templ templates to HTML (and friends).
func (t TemplRender) Render(w http.ResponseWriter) error {
	w.WriteHeader(t.Code)
	if t.Data != nil {
		return t.Data.Render(context.Background(), w)
	}

	return nil
}

// WriteContentType sets the Content-Type header.
func (t TemplRender) WriteContentType(w http.ResponseWriter) {
	w.Header().Set("Content-Type", "text/html; charset=utf-8")
}

// Instance returns an instance of the templ renderer.
func (t *TemplRender) Instance( /* name */ _ string, data interface{}) render.Render {
	if templData, ok := data.(templ.Component); ok {
		return &TemplRender{
			Code: http.StatusOK,
			Data: templData,
		}
	}
	return nil
}