package main

import (
	"fmt"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/data/binding"
	"fyne.io/fyne/v2/dialog"
	"fyne.io/fyne/v2/driver/desktop"
	"fyne.io/fyne/v2/storage"
	"fyne.io/fyne/v2/widget"
)

var APP fyne.App
var HOME fyne.Window
var NEED_SAVEDIR bool
var SAVEDIR string
var SAVEBIND binding.String

func SetupApp() {
	APP = app.NewWithID("apollox.endless-edit")
	HOME = APP.NewWindow("Endless Edit")
	HOME.CenterOnScreen()
	HOME.Resize(fyne.NewSize(1200, 900))

	pref := APP.Preferences()
	SAVEDIR = pref.StringWithFallback("save_dir", "")
	SAVEBIND = binding.BindString(&SAVEDIR)
	if SAVEDIR == "" {
		NEED_SAVEDIR = true
		SetSaveDir()
	}
}

func SetSaveDir() {
	pref := APP.Preferences()
	d := dialog.NewFolderOpen(func(lu fyne.ListableURI, err error) {
		if err != nil {
			d1 := dialog.NewError(fmt.Errorf("newfolderopen.err %v", err), HOME)
			d1.Show()
			return
		}
		if lu == nil {
			return
		}
		pref.SetString("save_dir", lu.Path())
		SAVEBIND.Set(lu.Path())
		if NEED_SAVEDIR {
			NEED_SAVEDIR = false
		}
	}, HOME)
	if !NEED_SAVEDIR {
		uri, err := storage.ParseURI("file://" + pref.String("save_dir"))
		if err != nil {
			d1 := dialog.NewError(fmt.Errorf("parseuri.err %v", err), HOME)
			d1.Show()
			return
		}
		dir, err := storage.ListerForURI(uri)
		if err != nil {
			d1 := dialog.NewError(fmt.Errorf("listerforuri.err %v", err), HOME)
			d1.Show()
			return
		}
		d.SetLocation(dir)
	}
	d.Show()
}

func SetupHome() {
	if HOME == nil {
		return
	}
	meta := APP.Metadata()
	pref := APP.Preferences()

	// Assign short cuts
	new_short := &desktop.CustomShortcut{
		fyne.KeyN,
		fyne.KeyModifierControl,
	}
	open_short := &desktop.CustomShortcut{
		fyne.KeyO,
		fyne.KeyModifierControl,
	}
	save_short := &desktop.CustomShortcut{
		fyne.KeyS,
		fyne.KeyModifierControl,
	}
	about_short := &desktop.CustomShortcut{
		fyne.KeyH,
		fyne.KeyModifierControl,
	}
	quit_short := &desktop.CustomShortcut{
		fyne.KeyQ,
		fyne.KeyModifierControl,
	}
	var about_save_btn *widget.Button

	// For now most stuff just prints out into the terminal/console what we clicked (except about and quit)
	file_new := fyne.NewMenuItem("New", func() { // CTRL + N
		fmt.Println("File>New")
		if NEED_SAVEDIR {
			SetSaveDir()
		}
	})
	file_new.Shortcut = new_short
	file_open := fyne.NewMenuItem("Open", func() { // CTRL + O
		fmt.Println("File>Open")
		if NEED_SAVEDIR {
			SetSaveDir()
		}
	})
	file_open.Shortcut = open_short
	file_save := fyne.NewMenuItem("Save", func() { // CTRL + S
		fmt.Println("File>Save")
		if NEED_SAVEDIR {
			SetSaveDir()
		}
	})
	file_save.Shortcut = save_short

	about_save_btn = widget.NewButton(pref.StringWithFallback("save_dir", "Needs to be set"), func() {
		SetSaveDir()
	})
	SAVEBIND.AddListener(binding.NewDataListener(func() { // Use a binding to update based on the preference change (More of a signal/slot to say hey update)
		val, err := SAVEBIND.Get()
		if err != nil {
			d1 := dialog.NewError(fmt.Errorf("savebind.err %v", err), HOME)
			d1.Show()
			return
		}
		about_save_btn.Text = val
		about_save_btn.Refresh()
	}))

	showing_about := false
	about := func() {
		d := dialog.NewCustom("About - Endless Edit", "Close", container.NewVBox(
			container.NewGridWithColumns(2,
				widget.NewLabel("Endless Edit"), widget.NewLabel(meta.Version),
				widget.NewLabel("Save Directory"), about_save_btn,
				widget.NewLabel("Apollo"), widget.NewLabel("© 2022"),
			),
		), HOME)
		d.SetOnClosed(func() {
			if showing_about {
				showing_about = false
			}
			about_save_btn.Text = pref.StringWithFallback("save_dir", "Needs to be set")
			about_save_btn.Refresh()
		})
		if !showing_about {
			showing_about = true
			d.Show()
		}
	}
	file_about := fyne.NewMenuItem("About", about) // CTRL + H
	file_about.Shortcut = about_short
	file_quit := fyne.NewMenuItem("Quit", func() { // CTRL + Q
		APP.Quit()
	})
	file_quit.Shortcut = quit_short

	file := fyne.NewMenu("File",
		file_new,
		file_open,
		file_save,
		fyne.NewMenuItemSeparator(),
		file_about,
		file_quit,
	)

	HOME.Canvas().AddShortcut(new_short, func(shortcut fyne.Shortcut) {
		fmt.Println("File>New (Via Shortcut)")
		if NEED_SAVEDIR {
			SetSaveDir()
			about_save_btn.Text = pref.StringWithFallback("save_dir", "Needs to be set")
			about_save_btn.Refresh()
		}
	})
	HOME.Canvas().AddShortcut(quit_short, func(shortcut fyne.Shortcut) {
		APP.Quit()
	})
	HOME.Canvas().AddShortcut(open_short, func(shortcut fyne.Shortcut) {
		fmt.Println("File>Open (Via Shortcut)")
		if NEED_SAVEDIR {
			SetSaveDir()
			about_save_btn.Text = pref.StringWithFallback("save_dir", "Needs to be set")
			about_save_btn.Refresh()
		}
	})
	HOME.Canvas().AddShortcut(save_short, func(shortcut fyne.Shortcut) {
		fmt.Println("File>Save (Via Shortcut)")
		if NEED_SAVEDIR {
			SetSaveDir()
			about_save_btn.Text = pref.StringWithFallback("save_dir", "Needs to be set")
			about_save_btn.Refresh()
		}
	})
	HOME.Canvas().AddShortcut(about_short, func(shortcut fyne.Shortcut) {
		about()
	})

	HOME.SetMainMenu(fyne.NewMainMenu(
		file,
		fyne.NewMenu("Edit", // This will most likely become AppTabs instead (as we'll be editing Profile, Account, Conditions and Ships)
			fyne.NewMenuItem("Profile", func() {
				fmt.Println("Edit>Profile")
			}),
			fyne.NewMenuItem("Ships", func() {
				fmt.Println("Edit>Ships")
			}),
			fyne.NewMenuItem("Account", func() {
				fmt.Println("Edit>Account")
			}),
		),
	))
}