156 lines
4 KiB
PowerShell
156 lines
4 KiB
PowerShell
param(
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[switch]$Headless,
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[switch]$NoInitialLaunch,
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[switch]$Once,
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[int]$IntervalMilliseconds = 1000,
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[int]$DebounceMilliseconds = 350,
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[int]$RetainSlots = 12
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)
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$ErrorActionPreference = "Stop"
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Set-StrictMode -Version Latest
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$repoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
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$reloadScript = Join-Path $PSScriptRoot "dev-reload.ps1"
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$watchLogPath = Join-Path $repoRoot "artifacts\dev-reload\watch.log"
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New-Item -ItemType Directory -Force -Path (Split-Path $watchLogPath) | Out-Null
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function Write-WatchLog([string]$message) {
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$line = "$(Get-Date -Format o) $message"
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Write-Host $line
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Add-Content -Path $watchLogPath -Value $line
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}
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function Get-WatchedFiles {
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$roots = @(
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(Join-Path $repoRoot "src"),
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(Join-Path $repoRoot "Aquarium.Engine.slnx"),
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(Join-Path $repoRoot "global.json")
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)
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foreach ($root in $roots) {
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if (-not (Test-Path $root)) {
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continue
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}
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$item = Get-Item -LiteralPath $root
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if (-not $item.PSIsContainer) {
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$item
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continue
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}
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Get-ChildItem -LiteralPath $item.FullName -Recurse -File |
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Where-Object {
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$_.FullName -notmatch "\\bin\\" -and
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$_.FullName -notmatch "\\obj\\" -and
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$_.Extension -in @(".cs", ".csproj", ".json", ".slnx")
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}
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}
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}
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function Get-SourceFingerprint {
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$fingerprintInput = Get-WatchedFiles |
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Sort-Object FullName |
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ForEach-Object {
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"$($_.FullName)|$($_.Length)|$($_.LastWriteTimeUtc.Ticks)"
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}
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$text = [string]::Join("`n", $fingerprintInput)
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$bytes = [System.Text.Encoding]::UTF8.GetBytes($text)
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$sha = [System.Security.Cryptography.SHA256]::Create()
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try {
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$hashBytes = $sha.ComputeHash($bytes)
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return -join ($hashBytes | ForEach-Object { $_.ToString("x2") })
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}
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finally {
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$sha.Dispose()
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}
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}
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function Wait-StableFingerprint {
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$first = Get-SourceFingerprint
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Start-Sleep -Milliseconds $DebounceMilliseconds
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$second = Get-SourceFingerprint
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while ($first -ne $second) {
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$first = $second
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Start-Sleep -Milliseconds $DebounceMilliseconds
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$second = Get-SourceFingerprint
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}
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return $second
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}
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function Invoke-Reload {
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param([string]$reason)
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Write-WatchLog "Reload requested: $reason"
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$arguments = @(
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"-NoProfile",
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"-ExecutionPolicy", "Bypass",
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"-File", $reloadScript,
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"-RetainSlots", "$RetainSlots"
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)
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if ($Headless) {
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$arguments += "-Headless"
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}
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$process = Start-Process `
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-FilePath "powershell" `
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-ArgumentList $arguments `
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-WorkingDirectory $repoRoot `
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-Wait `
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-PassThru `
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-NoNewWindow
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if ($process.ExitCode -ne 0) {
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throw "dev-reload failed with exit code $($process.ExitCode)."
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}
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}
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$lastGoodFingerprint = Wait-StableFingerprint
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$lastFailedFingerprint = $null
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if (-not $NoInitialLaunch) {
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try {
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Invoke-Reload "initial launch"
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$lastGoodFingerprint = Wait-StableFingerprint
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$lastFailedFingerprint = $null
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}
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catch {
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$lastFailedFingerprint = $lastGoodFingerprint
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Write-WatchLog "Initial launch failed; keeping any previous good process alive. $($_.Exception.Message)"
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}
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}
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Write-WatchLog "Watching Aquarium sources. Press Ctrl+C to stop."
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do {
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Start-Sleep -Milliseconds $IntervalMilliseconds
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$currentFingerprint = Wait-StableFingerprint
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if ($currentFingerprint -eq $lastGoodFingerprint -or $currentFingerprint -eq $lastFailedFingerprint) {
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if ($Once) {
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break
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}
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continue
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}
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try {
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Invoke-Reload "source change"
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$lastGoodFingerprint = $currentFingerprint
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$lastFailedFingerprint = $null
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}
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catch {
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$lastFailedFingerprint = $currentFingerprint
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Write-WatchLog "Reload failed; previous good process stays alive. $($_.Exception.Message)"
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}
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if ($Once) {
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break
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}
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} while ($true)
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