package main

import (
	"os"

	"github.com/nsf/termbox-go"
)

func main() {
	//battPct = getBatteryPct()
	//fmt.Printf("Battery: %d\n", getBatteryPct())
	var err error

	err = termbox.Init()
	if err != nil {
		panic(err)
	}
	defer termbox.Close()

	style := defaultStyle()
	termbox.SetOutputMode(termbox.Output256)
	mainLoop(style)
}

func mainLoop(style style) {
	screens := defaultScreens()
	displayScreen := screens[mainScreenIndex]
	layoutAndDrawScreen(displayScreen, style)

	for {
		event := termbox.PollEvent()
		if event.Type == termbox.EventKey {
			if event.Key == termbox.KeyCtrlC {
				break
			}
			newScreenIndex := displayScreen.handleKeyEvent(event)
			if newScreenIndex < len(screens) {
				displayScreen = screens[newScreenIndex]
				layoutAndDrawScreen(displayScreen, style)
			} else if newScreenIndex == exitScreenIndex {
				break
			}
		}
		if event.Type == termbox.EventResize || event.Type == termbox.EventNone {
			layoutAndDrawScreen(displayScreen, style)
		}
	}
}

// Screens Setup
const (
	mainScreenIndex = iota
	//aboutScreenIndex
	exitScreenIndex
)

func defaultScreens() []Screen {
	//var view_port ViewPort
	mainScreen := mainScreen{}
	//aboutScreen := aboutScreen{}
	screens := [...]Screen{
		&mainScreen,
		//	&aboutScreen,
	}
	return screens[:]
}

// WriteToLog Writes to the Log
func WriteToLog(d string) {
	f, err := os.OpenFile("system-status.log", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0664)
	if err != nil {
		panic(err)
	}
	f.WriteString(d)
	f.Close()
}