//
// pages.go
// Copyright (C) 2017 kevin <kevin@ie.suberic.net>
//
// Distributed under terms of the MIT license.
//

//go:generate go get -u github.com/mjibson/esc
//go:generate esc -o static.go -pkg pages static templates

package pages

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

	"gitlab.com/lyda/gqgmc/devices/geiger"
)

// Pages where data for pages goes
type Pages struct {
	gc    geiger.Counter
	gcErr error
}

type indexPage struct {
	Model   string
	Version string
	Serial  string
	Volts   int16
	CPM     uint16
}

// New create new Pages.
func New(gc geiger.Counter, gcErr error) Pages {
	return Pages{gc: gc, gcErr: gcErr}
}

// Register pages.
func (p Pages) Register() {
	http.HandleFunc("/", p.indexHandler)
	http.Handle("/favicon.ico", http.FileServer(Dir(false, "/static/")))
	http.Handle("/robots.txt", http.FileServer(Dir(false, "/static/")))
	http.Handle("/humans.txt", http.FileServer(Dir(false, "/static/")))
}

func (p Pages) indexHandler(w http.ResponseWriter, r *http.Request) {
	var indexPg indexPage

	if p.gcErr == nil {
		indexPg.CPM, _ = p.gc.GetCPM()
		indexPg.Volts, _ = p.gc.Volts()
		indexPg.Model = p.gc.Model()
		indexPg.Version = p.gc.Version()
		indexPg.Serial = p.gc.Serial()
	} else {
		indexPg.CPM = 0
		indexPg.Volts = 0
		indexPg.Model = "ERROR"
		indexPg.Version = "ERROR"
		indexPg.Serial = "ERROR"
	}

	index, _ := FSString(false, "index.html")
	t, err := template.New("index.html").Parse(index)
	if err != nil {
		log.Printf("Template error: %s\n", err)
		return // TODO: 404
	}
	t.Execute(w, &indexPg)
}