package UI

import (
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"strings"

	"net/url"
	gotime "time"

	"github.com/cuu/gogame/color"
	"github.com/cuu/gogame/draw"
	"github.com/cuu/gogame/event"
	"github.com/cuu/grab"
)

type DownloadProcessPage struct {
	Page

	URL     string
	DST_DIR string
	Value   int
	PngSize map[string][2]int
	Doing   bool

	FileNameLabel LabelInterface
	SizeLabel     LabelInterface

	Icons map[string]IconItemInterface

	URLColor  *color.Color
	TextColor *color.Color
	//TheTicker *gotime.Ticker

	Downloader *grab.Client
	resp       *grab.Response
	req        *grab.Request
}

func NewDownloadProcessPage() *DownloadProcessPage {

	p := &DownloadProcessPage{}

	p.FootMsg = [5]string{"Nav", "", "", "Back", ""}

	p.URLColor = &color.Color{51, 166, 255, 255} // URL
	p.TextColor = &color.Color{83, 83, 83, 255}  // Text

	p.PngSize = make(map[string][2]int, 0)

	p.Icons = make(map[string]IconItemInterface)

	return p
}

func (self *DownloadProcessPage) Init() {
	self.PosX = self.Index * self.Screen.Width
	self.Width = self.Screen.Width
	self.Height = self.Screen.Height

	self.CanvasHWND = self.Screen.CanvasHWND
	self.PngSize["bg"] = [2]int{48, 79}
	self.PngSize["needwifi_bg"] = [2]int{253, 132}

	bgpng := NewIconItem()
	bgpng.ImgSurf = MyIconPool.GetImgSurf("rom_download")
	bgpng.MyType = ICON_TYPES["STAT"]
	bgpng.Parent = self
	bgpng.Adjust(0, 0, self.PngSize["bg"][0], self.PngSize["bg"][1], 0)
	self.Icons["bg"] = bgpng

	needwifi_bg := NewIconItem()
	needwifi_bg.ImgSurf = MyIconPool.GetImgSurf("needwifi_bg")
	needwifi_bg.MyType = ICON_TYPES["STAT"]
	needwifi_bg.Parent = self
	needwifi_bg.Adjust(0, 0, self.PngSize["needwifi_bg"][0], self.PngSize["needwifi_bg"][1], 0)

	self.Icons["needwifi_bg"] = needwifi_bg

	self.FileNameLabel = NewLabel()
	self.FileNameLabel.SetCanvasHWND(self.CanvasHWND)
	self.FileNameLabel.Init("", Fonts["varela12"], nil)

	self.SizeLabel = NewLabel()
	self.SizeLabel.SetCanvasHWND(self.CanvasHWND)
	self.SizeLabel.Init("0/0Kb", Fonts["varela12"], nil)
	self.SizeLabel.SetColor(self.URLColor)

	self.Downloader = grab.NewClient()

}

func (self *DownloadProcessPage) OnExitCb() {

	//Stop Ticker and the Grab
	//if self.TheTicker != nil {
	//	self.TheTicker.Stop()
	//}

}

// should be in a gorotine
func (self *DownloadProcessPage) UpdateProcessInterval() {

	if self.Doing == true {
		return
	}
	self.Doing = true
	for {

		gotime.Sleep(150 * gotime.Millisecond)

		fmt.Printf("  transferred %v / %v bytes (%.2f%%)\n",
			self.resp.BytesComplete(),
			self.resp.Size,
			100*self.resp.Progress())

		self.Value = int(100.0 * self.resp.Progress())
		total := float64(self.resp.Size) / 1000.0 / 1000.0
		downloaded := float64(self.resp.BytesComplete()) / 1000.0 / 1000.0

		lb_str := fmt.Sprintf("%.2f/%.2fMb", downloaded, total)
		self.SizeLabel.SetText(lb_str)

		self.FileNameLabel.SetText(filepath.Base(self.resp.Filename))

		self.Screen.Draw()
		self.Screen.SwapAndShow()

		if self.resp.Progress() >= 1.0 {
			// download is complete
			fmt.Println("download is complete ", self.Value)
			self.Value = 0
			self.Doing = false
			break
		}

		if self.Doing == false {
			break
		}
	}

	self.Doing = false

	if err := self.resp.Err(); err != nil {
		self.DownloadErr()
		fmt.Fprintf(os.Stderr, "Download failed: %v\n", err)

		cmd := exec.Command("rm", "-rf", self.resp.Filename)
		cmd.Dir = self.DST_DIR
		cmd.Run()
	}

	fmt.Printf("Download saved to %s/%v \n", self.DST_DIR, self.resp.Filename)

	filename := filepath.Base(self.resp.Filename)

	if strings.HasSuffix(filename, ".zip") {
		cmd := exec.Command("unzip", filename)
		cmd.Dir = self.DST_DIR
		cmd.Run()
	} else if strings.HasSuffix(filename, ".zsync") {
		cmd := exec.Command("rm", "-rf", filename)
		cmd.Dir = self.DST_DIR
		cmd.Run()
	} else if strings.HasSuffix(filename, ".tar.gz") {
		cmd := exec.Command("tar", "xf", filename)
		cmd.Dir = self.DST_DIR
		cmd.Run()
	}

	cmd := exec.Command("rm", "-rf", filename)
	cmd.Dir = self.DST_DIR
	cmd.Run()

	self.DoneAndReturnUpLevel()

}

func (self *DownloadProcessPage) DownloadErr() {
	self.Screen.MsgBox.SetText("Download Failed")
	self.Screen.MsgBox.Draw()
	self.Screen.SwapAndShow()
}

func (self *DownloadProcessPage) DoneAndReturnUpLevel() {
	self.ReturnToUpLevelPage()
	self.Screen.Draw()
	self.Screen.SwapAndShow()
}

func (self *DownloadProcessPage) StartDownload(_url, dst_dir string) {

	if self.Screen.IsWifiConnectedNow() == false {
		return
	}

	_, err := url.ParseRequestURI(_url)
	if err == nil && IsDirectory(dst_dir) {
		self.URL = _url
		self.DST_DIR = dst_dir
	} else {

		self.Screen.MsgBox.SetText("Invaid")
		self.Screen.MsgBox.Draw()
		self.Screen.SwapAndShow()
		fmt.Println("DownloadProcessPage StartDownload Invalid ", err)
		return
	}

	if self.Doing == false {
		self.req, _ = grab.NewRequest(self.DST_DIR, _url)
		fmt.Printf("Downloading %v...\n", self.req.URL())
		self.resp = self.Downloader.Do(self.req)
		fmt.Printf("  %v\n", self.resp.HTTPResponse.Status)
		self.UpdateProcessInterval()
	}
}

func (self *DownloadProcessPage) StopDownload() {

	self.Doing = false
}
func (self *DownloadProcessPage) KeyDown(ev *event.Event) {

	if ev.Data["Key"] == CurKeys["A"] || ev.Data["Key"] == CurKeys["Menu"] {
		self.StopDownload()

		self.ReturnToUpLevelPage()
		self.Screen.Draw()
		self.Screen.SwapAndShow()
	}

}

func (self *DownloadProcessPage) Draw() {

	self.ClearCanvas()

	if self.Screen.IsWifiConnectedNow() == false {
		self.Icons["needwifi_bg"].NewCoord(self.Width/2, self.Height/2)
		self.Icons["needwifi_bg"].Draw()
		return

	}

	self.Icons["bg"].NewCoord(self.Width/2, self.Height/2-20)
	self.Icons["bg"].Draw()

	percent := self.Value
	if percent < 10 {
		percent = 10
	}

	rect_ := draw.MidRect(self.Width/2, self.Height/2+33, 170, 17, Width, Height)

	draw.AARoundRect(self.CanvasHWND, rect_,
		&color.Color{228, 228, 228, 255}, 5, 0, &color.Color{228, 228, 228, 255})

	rect2_ := draw.MidRect(self.Width/2, self.Height/2+33, int(170.0*(float64(percent)/100.0)), 17, Width, Height)

	rect2_.X = rect_.X
	rect2_.Y = rect_.Y

	draw.AARoundRect(self.CanvasHWND, rect2_,
		&color.Color{131, 199, 219, 255}, 5, 0, &color.Color{131, 199, 219, 255})

	w, h := self.FileNameLabel.Size()

	rect3_ := draw.MidRect(self.Width/2, self.Height/2+53, w, h, Width, Height)

	w, h = self.SizeLabel.Size()

	rect4_ := draw.MidRect(self.Width/2, self.Height/2+70, w, h, Width, Height)

	self.FileNameLabel.NewCoord(int(rect3_.X), int(rect3_.Y))
	self.FileNameLabel.Draw()

	self.SizeLabel.NewCoord(int(rect4_.X), int(rect4_.Y))
	self.SizeLabel.Draw()

}