param()

$ErrorActionPreference = "Stop"

$selfUrl = "https://gitea.qortal.link/crowetic/qortal-DevNet-scripts/raw/branch/main/start-windows.ps1"
$tmpDir = Join-Path (Split-Path -Parent $MyInvocation.MyCommand.Path) "tmp"
$targetName = "start.ps1"
$selfPath = $MyInvocation.MyCommand.Path
if ((Split-Path -Leaf $selfPath) -ne $targetName) {
    $selfPath = Join-Path (Split-Path -Parent $MyInvocation.MyCommand.Path) $targetName
}

New-Item -ItemType Directory -Force -Path $tmpDir | Out-Null

function Cleanup-Tmp {
    if (Test-Path $tmpDir) {
        Remove-Item -Recurse -Force $tmpDir
    }
}

$tmpSelf = Join-Path $tmpDir ("start-windows.{0}.ps1" -f $PID)
try {
    Invoke-WebRequest -Uri $selfUrl -OutFile $tmpSelf
} catch {
    $tmpSelf = $null
}

if ($tmpSelf -and (Test-Path $tmpSelf)) {
    $needsUpdate = $true
    if (Test-Path $selfPath) {
        $localHash = (Get-FileHash -Algorithm SHA256 -Path $selfPath).Hash
        $remoteHash = (Get-FileHash -Algorithm SHA256 -Path $tmpSelf).Hash
        if ($localHash -eq $remoteHash) {
            $needsUpdate = $false
        }
    }
    if ($needsUpdate) {
        Write-Host "Updating start-windows.ps1..."
        Copy-Item -Path $tmpSelf -Destination $selfPath -Force
        Unblock-File -Path $selfPath -ErrorAction SilentlyContinue
        Cleanup-Tmp
        & powershell -ExecutionPolicy Bypass -File $selfPath @args
        exit
    }
}

$principal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
if ($principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
    Write-Host "Please run as a non-administrator user before running"
    Cleanup-Tmp
    exit 1
}

$minJavaVer = 11
if (-not (Get-Command java -ErrorAction SilentlyContinue)) {
    Write-Host "Java is not available, please install Java $minJavaVer or greater"
    Cleanup-Tmp
    exit 1
}

$versionOutput = & cmd /c "java -version 2>&1"
$versionMatch = ($versionOutput | Select-String -Pattern 'version "([^"]+)"' | Select-Object -First 1)
if (-not $versionMatch) {
    Write-Host "Unable to determine Java version."
    Cleanup-Tmp
    exit 1
}

$versionStr = $versionMatch.Matches[0].Groups[1].Value
$parts = $versionStr.Split('.')
if ($parts[0] -eq "1" -and $parts.Length -ge 2) {
    $major = [int]$parts[1]
} else {
    $major = [int]$parts[0]
}

if ($major -lt $minJavaVer) {
    Write-Host "Please upgrade your Java to version $minJavaVer or greater"
    Cleanup-Tmp
    exit 1
}
Write-Host "Passed Java version check"

if (-not (Test-Path "qortal.jar")) {
    Write-Host "qortal.jar not found. Downloading latest version..."
    Invoke-WebRequest -Uri "https://cloud.qortal.org/s/QortalDevNetJarLatest/download/qortal.jar" -OutFile "qortal.jar"
}

$hashFile = Join-Path $tmpDir "hash.txt"
try {
    Write-Host "Downloading hash.txt for validation..."
    Invoke-WebRequest -Uri "https://cloud.qortal.org/s/QortalDevNetJarHashFile/download/hash.txt" -OutFile $hashFile
    $expectedHash = (Get-Content -Raw -Path $hashFile).Trim().ToLower()
    Write-Host "Generating MD5 checksum of local qortal.jar..."
    $localHash = (Get-FileHash -Algorithm MD5 -Path "qortal.jar").Hash.ToLower()
    Write-Host "Validating qortal.jar file..."
    if ($expectedHash -eq $localHash) {
        Write-Host "qortal.jar is up to date!"
    } else {
        Write-Host "qortal.jar is outdated. Downloading latest version..."
        Invoke-WebRequest -Uri "https://cloud.qortal.org/s/QortalDevNetJarLatest/download/qortal.jar" -OutFile "qortal.jar"
        Write-Host "qortal.jar has been updated to the latest version."
    }
} catch {
    Write-Host "Warning: failed to validate qortal.jar; skipping validation."
}

$localSettings = "settings.json"
if (Test-Path $localSettings) {
    try {
        $localData = Get-Content -Raw -Path $localSettings | ConvertFrom-Json
    } catch {
        Write-Host "Warning: settings.json is not valid JSON; skipping fixedNetwork removal."
        $localData = $null
    }

    if ($localData -and ($localData.PSObject.Properties.Name -contains "fixedNetwork")) {
        $null = $localData.PSObject.Properties.Remove("fixedNetwork")
        $localData | ConvertTo-Json -Depth 20 | Set-Content -Encoding UTF8 -Path $localSettings
        Write-Host "Removed fixedNetwork from settings.json."
    }
}

if (-not (Test-Path "qortal.jar")) {
    $candidate = Get-ChildItem -Path "target" -Filter "qortal*.jar" -ErrorAction SilentlyContinue | Select-Object -First 1
    if ($candidate) {
        Write-Host "Copying Maven-built Qortal JAR to correct pathname"
        Copy-Item -Path $candidate.FullName -Destination "qortal.jar" -Force
    }
}

$runPid = $null
if (Test-Path "run.pid") {
    $pidText = (Get-Content -Raw -Path "run.pid").Trim()
    if ($pidText -match '^\d+$') {
        $runPid = [int]$pidText
    }
}

if ($runPid) {
    $proc = Get-CimInstance Win32_Process -Filter "ProcessId=$runPid" -ErrorAction SilentlyContinue
    if ($proc -and $proc.CommandLine -match "qortal\.jar") {
        Write-Host "qortal appears to be running already (run.pid); skipping start."
        Cleanup-Tmp
        exit 0
    }
}

$jvmMemoryArgs = @("-XX:MaxRAMPercentage=80", "-Xss5m", "-XX:+UseSerialGC")
$javaArgs = @("-Djava.net.preferIPv4Stack=false") + $jvmMemoryArgs + @("-jar", "qortal.jar")
$proc = Start-Process -FilePath "java" -ArgumentList $javaArgs -RedirectStandardOutput "run.log" -RedirectStandardError "run.err" -PassThru -NoNewWindow

$proc.Id | Set-Content -Path "run.pid" -Encoding ASCII
Write-Host "qortal running as pid $($proc.Id)"

Cleanup-Tmp