param(
    [string]$ProjectDir = $PSScriptRoot
)

$versionFile = Join-Path $ProjectDir "version.txt"

if (-not (Test-Path $versionFile)) {
    "1.0.0.0" | Out-File -Encoding utf8 $versionFile
}

$version = Get-Content $versionFile -Raw
if ($null -eq $version) {
    $version = "1.0.0.0"
}
$version = $version.Trim()
$parts = $version.Split('.')

if ($parts.Length -lt 4) {
    $parts = @(1, 0, 0, 0)
}

# 递增最后一位 (Revision)
try {
    $parts[3] = [int]$parts[3] + 1
} catch {
    $parts[3] = 0
}

$newVersion = $parts -join "."
$newVersion | Out-File -Encoding utf8 $versionFile

Write-Output $newVersion