package node

import (
	"html/template"
	"net/http"
	"os"

	"gitea.difrex.ru/Umbrella/fetcher/i2es"
	log "github.com/sirupsen/logrus"
)

type ssr struct {
	es           ESConf
	templatesDir string
}

func newSSR(templatesDir string, es ESConf) *ssr {
	return &ssr{
		es:           es,
		templatesDir: templatesDir,
	}
}

func (s *ssr) templatePath(name string) string {
	return s.templatesDir + string(os.PathSeparator) + name
}

func (s *ssr) getTemplate(name string) (*template.Template, error) {
	t := template.New("root.html")

	tpl, err := t.ParseFiles(
		s.templatePath(name+".html"),
		s.templatePath("style.html"),
		s.templatePath("echoes.html"),
		s.templatePath("post.html"),
		s.templatePath("latest_posts.html"),
		s.templatePath("header.html"),
		s.templatePath("footer.html"),
	)
	if err != nil {
		return nil, err
	}

	return tpl, nil
}

func (s *ssr) ssrRootHandler(w http.ResponseWriter, r *http.Request) {
	LogRequest(r)

	tpl, err := s.getTemplate("root")
	if err != nil {
		log.Error(err)
		return
	}

	var root struct {
		Echoes      []echo
		CurrentPage string
		Posts       []i2es.ESDoc
	}
	root.Echoes = s.es.GetEchoesList()
	root.Posts = s.es.GetLatestPosts(100)

	if err := tpl.Execute(w, root); err != nil {
		log.Error(err)
	}
}