feat(installer) Windows powershell installer and uninstaller (#10)

* feat(installer) Windows powershell installer and uninstaller

* style(installer): Fix uninstaller file header

* feat(installer): Branch selection & Sanity checks

install.ps1

@@ -0,0 +1,90 @@
+# Vencord Windows Installer
+
+$patcher = "$PWD\dist\patcher.js"
+$patcher_safe = $patcher -replace '\\', '\\'
+
+$APP_PATCH = @"
+require("$patcher_safe");
+require("../app.asar");
+"@
+
+$PACKAGE_JSON = @"
+{
+  "main": "index.js",
+  "name": "discord"
+}
+"@
+
+$branch_paths = Get-ChildItem -Directory -Path $env:LOCALAPPDATA |
+	Select-String -Pattern "Discord\w*" -AllMatches |
+	Select-String -Pattern "DiscordGames" -NotMatch # Ignore DiscordGames folder
+
+$branches = @()
+
+foreach ($branch in $branch_paths) {
+	$branch = $branch.Line.Split("\")[-1]
+
+	if ($branch -eq "Discord") {
+		$branch = "Discord Stable"
+	} else {
+		$branch = $branch.Replace("Discord", "Discord ")
+	}
+
+	$branches = $branches + $branch
+}
+
+$branch_count = $branches.Count
+
+Write-Output "Found $branch_count Branches"
+Write-Output "====================================="
+Write-Output "===== Select a Branch to patch ======"
+
+$i = 0
+foreach ($branch in $branches) {
+	Write-Output "=== $i. $branch"
+	$i++
+}
+
+Write-Output "====================================="
+$pos = Read-Host "Enter a number"
+
+if ($null -eq $branches[$pos]) {
+	Write-Output "Invalid branch selection"
+	exit
+}
+
+$branch = $branches.Get($pos)
+$discord_root = $branch_paths.Get($pos)
+
+Write-Output "`nPatching $branch"
+
+$app_folders = Get-ChildItem -Directory -Path $discord_root |
+	Select-String -Pattern "app-"
+
+foreach ($folder in $app_folders)
+{
+	$version = [regex]::match($folder, 'app-([\d\.]+)').Groups[1].Value
+	Write-Output "Patching Version $version"
+
+	$resources = "$folder\resources"
+	if (-not(Test-Path -Path "$resources")) {
+		Write-Error "Resources folder does not exist. Outdated version?`n"
+		continue
+	}
+	if (-not(Test-Path -Path "$resources\app.asar")) {
+		Write-Error "Failed to find app.asar in $folder`n"
+		continue
+	}
+
+	$app = "$resources\app"
+	if (Test-Path -Path $app) {
+		Write-Error "Are you already patched? App folder already exists at $resources`n"
+		continue
+	}
+
+	$null = New-Item -Path $app -ItemType Directory
+	$null = Tee-Object -InputObject $APP_PATCH -FilePath "$app\index.js"
+	$null = Tee-Object -InputObject $PACKAGE_JSON -FilePath "$app\package.json"
+
+	Write-Output "Patched $branch (version $version) successfully"
+}

uninstall.ps1

@@ -0,0 +1,73 @@
+# Vencord Uninstaller
+
+$branch_paths = Get-ChildItem -Directory -Path $env:LOCALAPPDATA |
+	Select-String -Pattern "Discord\w*" -AllMatches |
+	Select-String -Pattern "DiscordGames" -NotMatch # Ignore DiscordGames folder
+
+$branches = @()
+
+foreach ($branch in $branch_paths) {
+	$branch = $branch.Line.Split("\")[-1]
+
+	if ($branch -eq "Discord") {
+		$branch = "Discord Stable"
+	} else {
+		$branch = $branch.Replace("Discord", "Discord ")
+	}
+
+	$branches = $branches + $branch
+}
+
+$branch_count = $branches.Count
+
+Write-Output "Found $branch_count Branches"
+Write-Output "====================================="
+Write-Output "===== Select a Branch to unpatch ======"
+
+$i = 0
+foreach ($branch in $branches) {
+	Write-Output "=== $i. $branch"
+	$i++
+}
+
+Write-Output "====================================="
+$pos = Read-Host "Enter a number"
+
+if ($null -eq $branches[$pos]) {
+	Write-Output "Invalid branch selection"
+	exit
+}
+
+$branch = $branches.Get($pos)
+$discord_root = $branch_paths.Get($pos)
+
+Write-Output "`nUnpatch $branch"
+
+$app_folders = Get-ChildItem -Directory -Path $discord_root |
+	Select-String -Pattern "app-"
+
+foreach ($folder in $app_folders)
+{
+	$version = [regex]::match($folder, 'app-([\d\.]+)').Groups[1].Value
+	Write-Output "Unpatching $branch Version $version"
+
+	$resources = "$folder\resources"
+	if (-not(Test-Path -Path "$resources")) {
+		Write-Output "Resources folder doesn't exist... Possibly an outdated copy and can be ignored.`n"
+		continue
+	}
+	if (-not(Test-Path -Path "$resources\app")) {
+		Write-Output "App folder doesn't exist... Already unpatched?`n"
+		continue
+	}
+
+	Remove-Item -Path "$folder\resources\app" -Recurse -Force -Confirm:$false
+
+	if (Test-Path "$folder\resources\app")
+	{
+		Write-Error "Failed to delete $folder\resources\app"
+	} else {
+		Write-Output "Successfully unpatched $branch (version $version)"
+	}
+
+}