# WinDbg dump analysis — finds kd.exe dynamically, runs !analyze -v
# Usage: powershell -ExecutionPolicy Bypass -File windbg-analyze.ps1 [-DumpFile path]
# Defaults to newest minidump if no path given

param(
    [string]$DumpFile
)

$ErrorActionPreference = 'Stop'

# Find kd.exe dynamically (version changes on updates)
$kd = (Get-ChildItem "C:\Program Files\WindowsApps\Microsoft.WinDbg_*_x64__8wekyb3d8bbwe\amd64\kd.exe" -ErrorAction SilentlyContinue | Select-Object -First 1).FullName
if (-not $kd) {
    Write-Error "WinDbg not found. Install: winget install Microsoft.WinDbg"
    exit 1
}
Write-Host "Using: $kd"

# Default to newest minidump
if (-not $DumpFile) {
    $DumpFile = (Get-ChildItem C:\Windows\Minidump\*.dmp -ErrorAction SilentlyContinue | Sort-Object LastWriteTime -Descending | Select-Object -First 1).FullName
    if (-not $DumpFile) {
        Write-Error "No minidumps found in C:\Windows\Minidump\"
        exit 1
    }
    Write-Host "Analyzing newest dump: $DumpFile"
}

if (-not (Test-Path $DumpFile)) {
    Write-Error "Dump file not found: $DumpFile"
    exit 1
}

& $kd -z $DumpFile -c "!analyze -v; q"