package templates

import (
	"html/template"
	"log"
	"net/http"
)

var templates map[string]*template.Template

type Page struct {
	Title         string
	Login         *LoginPage
	FilterPresets map[string]interface{}
	Infos         map[string]interface{}
	Config        map[string]interface{}
}

type LoginPage struct {
	Error string
	Info  string
}

func init() {
	base := template.Must(template.ParseFiles("./templates/base.html"))
	templates = map[string]*template.Template{
		"home":                 template.Must(template.Must(base.Clone()).ParseFiles("./templates/home.html")),
		"404":                  template.Must(template.Must(base.Clone()).ParseFiles("./templates/404.html")),
		"login":                template.Must(template.Must(base.Clone()).ParseFiles("./templates/login.html")),
		"monitoring/jobs/":     template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/jobs.html")),
		"monitoring/job/":      template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/job.html")),
		"monitoring/users/":    template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/users.html")),
		"monitoring/user/":     template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/user.html")),
		"monitoring/analysis/": template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/analysis.html")),
		"monitoring/systems/":  template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/systems.html")),
		"monitoring/node/":     template.Must(template.Must(base.Clone()).ParseFiles("./templates/monitoring/node.html")),
	}
}

func Render(rw http.ResponseWriter, r *http.Request, name string, page *Page) {
	t, ok := templates[name]
	if !ok {
		panic("templates must be predefinied!")
	}

	if err := t.Execute(rw, page); err != nil {
		log.Printf("template error: %s\n", err.Error())
	}
}