package main

import (
	"fmt"
	"log"
	"strings"
	"time"

	"github.com/jroimartin/gocui"
)

var dcfg *DynmapConfig
var serverName, baseURL string
var close bool

const VIEW_KEY = "MAIN_VIEW_KEY"

func main() {
	serverName = "minecraft.br0xen.com"
	fmt.Println(serverName)
	baseURL = "http://minecraft.br0xen.com:8123/up/"
	dcfg = NewDynmapConfig(serverName, baseURL)
	dcfg.Update()

	g, err := gocui.NewGui(gocui.OutputNormal)
	if err != nil {
		log.Panicln(err)
	}
	defer g.Close()
	list := NewListWidget(VIEW_KEY, 1, 1, LeftPad(" ", 35)+"\n\n\n\n\n\n\n\n")
	g.SetManager(list)
	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
		log.Panicln(err)
	}
	go func() {
		for !close {
			dcfg.Update()
			g.Update(func(g *gocui.Gui) error {
				lst, _ := g.View(VIEW_KEY)
				lst.Clear()
				fmt.Fprintln(lst, Center(dcfg.Name, 35))
				fmt.Fprintln(lst, Center(fmt.Sprintf("~ %s ~", dcfg.GetServerTime()), 35))
				num := fmt.Sprintf("[ %d ]", dcfg.GetOnlinePlayerCount())
				for _, v := range dcfg.GetPlayerList() {
					fmt.Fprintln(lst, "* %s", v)
				}
				for i := dcfg.GetOnlinePlayerCount(); i < 6; i++ {
					fmt.Fprintln(lst, " ")
				}
				fmt.Fprintln(lst, LeftPad(num, 35))
				return nil
			})
			time.Sleep(time.Second * 5)
		}
	}()
	if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
		log.Panicln(err)
	}
	close = true
}

func quit(g *gocui.Gui, v *gocui.View) error {
	return gocui.ErrQuit
}

type ListWidget struct {
	name string
	x, y int
	w, h int
	body string
}

func NewListWidget(name string, x, y int, body string) *ListWidget {
	lines := strings.Split(body, "\n")
	w := 0
	for _, l := range lines {
		if len(l) > w {
			w = len(l)
		}
	}
	h := len(lines) + 1
	w = w + 1
	return &ListWidget{name: name, x: x, y: y, w: w, h: h, body: body}
}

func (w *ListWidget) Layout(g *gocui.Gui) error {
	v, err := g.SetView(w.name, w.x, w.y, w.x+w.w, w.y+w.h)
	if err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		fmt.Fprint(v, w.body)
	}
	return nil
}