gui.go

package main

import (
	"fmt"
	"log"
	"os"
	"path"
	"strconv"
	"strings"

	"github.com/AllenDang/giu"
)

type Proton struct {
	Widget  giu.Widget
	Checked bool
	Name    string
	Major   int
	Minor   int
	Used    bool
}

const (
	mainWindowWidth      int                   = 692
	mainWindowHeight     int                   = 325
	mainButtonWidth      float32               = 220
	mainButtonFullWidth  float32               = 676
	mainButtonHeight     float32               = 100
	pruneSubButtonWidth  float32               = 100
	pruneSubButtonHeight float32               = 50
	mainWindowFlags      giu.MasterWindowFlags = giu.MasterWindowFlagsNotResizable
	// mainWindowFlags      giu.MasterWindowFlags = giu.MasterWindowFlagsFloating + giu.MasterWindowFlagsNotResizable
)

var (
	protons         []Proton
	rows            []*giu.TableRowWidget
	gamesRows       []*giu.TableRowWidget
	showPruneWindow bool = false
)

func getInstalledProtons() (err error) {
	protons = []Proton{}
	fileNames, err := os.ReadDir(protonPath)
	if err != nil {
		return err
	}

	for _, fileName := range fileNames {
		if fileName.Type().IsDir() {

			name := fileName.Name() // simplify

			if !strings.Contains(name, "GE-Proton") {
				continue
			}

			trimmed := strings.TrimPrefix(name, "GE-Proton") // leaves 7-31, for example

			split := strings.Split(trimmed, "-") // should result in []string{"7", "31"}, for example
			if len(split) < 2 {                  // skip if we can't parse
				log.Println("couldn't determine version information from: " + name)
				continue
			}

			major, err := strconv.Atoi(split[0]) // convert major number to int
			if err != nil {
				log.Println("problem converting major: " + err.Error())
				continue
			}
			minor, err := strconv.Atoi(split[1]) // same with minor
			if err != nil {
				log.Println("problem converting minor: " + err.Error())
				continue
			}

			protons = append(protons, Proton{ // create Proton object
				Name:    name,
				Checked: false,
				Major:   major,
				Minor:   minor,
			})
		}

		for i, proton := range protons {
			proton.Widget = giu.Checkbox(proton.Name, &protons[i].Checked)
		}

	}

	return err
}

func getLatestInstalled() (latest Proton) {
	for _, proton := range protons {
		if latest.Major < proton.Major {
			latest = proton
			continue
		}
		if latest.Minor < proton.Minor {
			latest = proton
			continue
		}
	}

	return latest
}

func uncheckLatest() []Proton {
	latest := getLatestInstalled()
	for i, proton := range protons {
		if proton.Major == latest.Major && proton.Minor == latest.Minor {
			protons[i].Checked = false
		}
	}

	return protons
}

func uncheckUsed() []Proton {
	for i, proton := range protons {
		if proton.Used {
			protons[i].Checked = false
		}
	}

	return protons
}

func buildRows() {
	err := getInstalledProtons()
	if err != nil {
		return
	}

	games, err := getSteamGames()
	if err != nil {
		return
	}

	for i, proton := range protons {
		for _, game := range games {
			if game.CompatibilityTool == proton.Name {
				protons[i].Used = true
			}
		}
	}

	protons = uncheckLatest()
	protons = uncheckUsed()

	protonBoxes := []giu.Widget{}
	for i, proton := range protons {
		protonBoxes = append(protonBoxes, giu.Checkbox(proton.Name, &protons[i].Checked))
	}

	rows = make([]*giu.TableRowWidget, len(protonBoxes))
	for i := range rows {
		rows[i] = giu.TableRow(
			protonBoxes[i],
			giu.Label(strconv.FormatBool(protons[i].Used)),
		)
	}
}

func buildGamesRows() {
	games, err := getSteamGames()
	if err != nil {
		return
	}

	gamesRows = make([]*giu.TableRowWidget, len(games))
	for i, game := range games {
		installed := "Not currently installed"
		if len(game.Path) > 0 {
			if strings.Contains(game.Path, "/run/media") {
				installed = "microSD card"
			}
			if strings.Contains(game.Path, ".local/share") {
				installed = "internal SSD"
			}
		}
		gamesRows[i] = giu.TableRow(
			giu.Label(strconv.Itoa(game.Id)),
			giu.Label(game.Name),
			giu.Label(game.CompatibilityTool),
			giu.Label(installed),
		)
	}
}

func prune() {
	for _, proton := range protons {
		if !proton.Checked {
			continue
		}

		fmt.Println("Pruning " + proton.Name + "...")
		err := os.RemoveAll(path.Join(protonPath, proton.Name))
		if err != nil {
			log.Println("error removing " + proton.Name + ": " + err.Error())
			continue
		}
	}

	buildRows()
}

func uncheckAll() {
	for i := range protons {
		protons[i].Checked = false
	}
}

func checkAllExceptLatest() {
	latest := getLatestInstalled()
	for i, proton := range protons {
		if proton == latest {
			protons[i].Checked = false
		} else {
			protons[i].Checked = true
		}
	}
}

func stub() {}

func togglePruneWindow() {
	giu.OpenPopup("prune")
}

func toggleGamesWindow() {
	giu.OpenPopup("games")
}

func popupError(err error) {
	giu.Msgbox("Error", err.Error())
}

func doInstall() {
	err := install()
	if err != nil {
		popupError(err)
		return
	}

	giu.Msgbox("Info", "Steam Deck GE-Proton Updater successfully installed! It will run when this Steam Deck reboots. See About for more information.")

	installed, err = isInstalled()
	if err != nil {
		popupError(err)
		return
	}
}

func userMustRelaunch(result giu.DialogResult) {
	os.Exit(0)
}

func doUpdate() {
	res, err := doSelfUpdate()
	if err != nil {
		popupError(err)
		return
	}

	if res {
		giu.Msgbox("Info", "Update successful! You MUST close Steam Deck GE-Proton Updater and run it again to get the benefits.").ResultCallback(userMustRelaunch)
	} else {
		giu.Msgbox("Info", "Already on the latest release of Steam Deck GE-Proton Updater.")
	}
}

func doUninstall(result giu.DialogResult) {
	if result == false {
		return
	}

	err := uninstall()
	if err != nil {
		popupError(err)
		return
	}

	installed, err = isInstalled()
	if err != nil {
		popupError(err)
		return
	}
}

func promptUninstall() {
	giu.Msgbox("Info", "Are you positive you want to remove Steam Deck GE-Proton Updater? This will not remove GE-Proton from your Steam Deck.").Buttons(giu.MsgboxButtonsYesNo).ResultCallback(doUninstall)
}

func popupVersion() {
	giu.Msgbox("About", "Steam Deck GE-Proton Updater will run at every boot. In order, it will...\n\t1. try to update itself to the latest version,\n\t2. ensure it is configured correctly,\n\t3. attempt to get information about the latest GE-Proton release,\n\t4. install the latest release if you don't already have it.\n\n"+
		"Version: "+version+"\n"+
		"Commit: "+commit+"\n"+
		"Date: "+date+"\n"+
		"Built By: "+builtBy+"\n",
	)
}

func buildGamesPopup() *giu.PopupModalWidget {
	gamesTable := giu.Table().Size(
		float32(mainWindowWidth-26),   // fit scrollbar
		float32(mainWindowHeight-102), // fit other widgets
	).Flags(
		giu.TableFlagsSortable,
	).Columns(
		giu.TableColumn("App ID").Flags(
			giu.TableColumnFlagsNoDirectResize+giu.TableColumnFlagsNoResize+giu.TableColumnFlagsNoSort,
		),
		giu.TableColumn("App Name").Flags(
			giu.TableColumnFlagsWidthStretch+giu.TableColumnFlagsNoDirectResize+giu.TableColumnFlagsNoResize+giu.TableColumnFlagsNoSort,
		),
		giu.TableColumn("Compatibility Tool").Flags(
			giu.TableColumnFlagsNoDirectResize+giu.TableColumnFlagsNoResize+giu.TableColumnFlagsNoSort,
		),
		giu.TableColumn("Installed").Flags(
			giu.TableColumnFlagsNoDirectResize+giu.TableColumnFlagsNoResize+giu.TableColumnFlagsNoSort,
		),
	).Rows(
		gamesRows...,
	)

	return giu.PopupModal(
		"games",
	).Flags(
		giu.WindowFlagsAlwaysAutoResize+giu.WindowFlagsNoMove+giu.WindowFlagsNoTitleBar,
	).Layout(
		giu.Row(
			giu.Button("Refresh").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(buildGamesRows),
			giu.Button("Close").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(giu.CloseCurrentPopup),
		),
		giu.Row(
			giu.Label("Games using Proton, and what version of Proton each is set to use:"),
		),
		gamesTable,
	)
}

func buildPrunePopup() *giu.PopupModalWidget {
	pruneTable := giu.Table().Size(
		float32(mainWindowWidth-36),   // fit scrollbar
		float32(mainWindowHeight-152), // fit other widgets
	).Columns(
		giu.TableColumn("Installed GE-Proton version").Flags(
			giu.TableColumnFlagsWidthStretch+giu.TableColumnFlagsNoDirectResize+giu.TableColumnFlagsNoResize,
		),
		giu.TableColumn("In-use").Flags(
			giu.TableColumnFlagsNoDirectResize+giu.TableColumnFlagsNoResize,
		),
	).Rows(
		rows...,
	)

	return giu.PopupModal(
		"prune",
	).Flags(
		giu.WindowFlagsAlwaysAutoResize+giu.WindowFlagsNoMove+giu.WindowFlagsNoTitleBar,
	).Layout(
		giu.Row(
			giu.Button("Refresh").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(buildRows),
			giu.Button("Uncheck All").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(uncheckAll),
			giu.Button("Check All").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(checkAllExceptLatest),
			giu.Label("                                     "),
			giu.Button("Prune").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(prune),
		),
		giu.Label("Please click the Prune button to PERMANENTLY DELETE the installations checked below."),
		pruneTable,
		giu.Button("Close").Size(pruneSubButtonWidth, pruneSubButtonHeight).OnClick(giu.CloseCurrentPopup),
	)
}

func getLatestGeProtonRelease() {
	err := get()
	if err != nil {
		popupError(err)
		return
	}
}

func loop() {
	aboutButton := giu.Button("About Steam Deck GE-Proton Updater").Size(mainButtonFullWidth, mainButtonHeight).OnClick(popupVersion)
	updateButton := giu.Button("Update Steam Deck\nGE-Proton Updater").Size(mainButtonWidth, mainButtonHeight).OnClick(doUpdate)
	installButton := giu.Button("Install Steam Deck\nGE-Proton Updater").Size(mainButtonWidth, mainButtonHeight).OnClick(doInstall)
	uninstallButton := giu.Button("Uninstall Steam Deck\nGE-Proton Updater").Size(mainButtonWidth, mainButtonHeight).OnClick(promptUninstall)
	getProtonButton := giu.Button("Get latest GE-Proton release").Size(mainButtonWidth, mainButtonHeight).OnClick(getLatestGeProtonRelease)
	pruneProtonButton := giu.Button("Prune chosen GE-Proton releases").Size(mainButtonWidth, mainButtonHeight).OnClick(togglePruneWindow)
	listGamesButton := giu.Button("Show list of games").Size(mainButtonWidth, mainButtonHeight).OnClick(toggleGamesWindow)

	// buttons we want disabled when we aren't running the real deal
	if !installed {
		uninstallButton.Disabled(true)
	}

	giu.SingleWindow().Layout(
		giu.PrepareMsgbox(),
		buildPrunePopup(),
		buildGamesPopup(),
		giu.Row(
			aboutButton,
		),
		giu.Row(
			installButton,
			uninstallButton,
			updateButton,
		),
		giu.Row(
			getProtonButton,
			pruneProtonButton,
			listGamesButton,
		),
	)
}

func gui() {
	mainWindow := giu.NewMasterWindow("Steam Deck GE-Proton Updater "+version+" "+commit, mainWindowWidth, mainWindowHeight, mainWindowFlags)

	buildRows()
	buildGamesRows()

	mainWindow.Run(loop)
}