# Builds the sandboxed pod installs for the podium-teardown repro.
# Assets are junctioned from dist, the exe comes from Release (build first).
# Use the SAME -PodCount you intend to pass to feeder.ps1.
param(
  [ValidateRange(2, 8)]
  [int]$PodCount = 2,
  [string]$Scratch = "$env:TEMP\rp412-podium-repro",
  [string]$Dist = 'C:\VWE\RP412\dist',
  [string]$ReleaseExe = 'C:\VWE\RP412\Release\rpl4opt.exe',
  # Drive the pods into things so the race contains damage, deaths and
  # respawns. Parked pods reach the podium and tear down clean; the fatal
  # playtest's pods did not. -Drive 0 restores the sterile run.
  [int]$Drive = 1
)
$ErrorActionPreference = 'Stop'
if (-not (Test-Path $ReleaseExe)) { throw "build Release first: $ReleaseExe missing" }
New-Item -ItemType Directory -Force $Scratch | Out-Null
for ($i = 0; $i -lt $PodCount; $i++) {
  $dir = "$Scratch\pod$([char](65 + $i))"
  New-Item -ItemType Directory -Force $dir | Out-Null
  foreach ($assets in 'AUDIO','GAUGE','VIDEO') {
    if (-not (Test-Path "$dir\$assets")) {
      New-Item -ItemType Junction -Path "$dir\$assets" -Target "$Dist\$assets" | Out-Null
    }
  }
  foreach ($file in 'environ.ini','JOYSTICK.INI','RPDPL.INI','RPL4.RES','libsndfile-1.dll','OpenAL32.dll') {
    Copy-Item "$Dist\$file" $dir -Force
  }
  Copy-Item $ReleaseExe $dir -Force

  #
  # dist ships RP412PODIUM=0 - the podium is OFF by default, and a rig that
  # copies environ.ini verbatim tests nothing (every pod just logs
  # "WinnersCircle: disabled" and goes straight to the results). Force it on.
  #
  # Appended, not edited: environ.ini takes the LAST value for a duplicate
  # key. Written as ASCII with no BOM - a BOM in this file has invalidated
  # test runs before.
  #
  $override = "`r`n# --- podium-repro overrides (setup.ps1) ---`r`nRP412PODIUM=1`r`n"
  if ($Drive -ne 0) {
    Copy-Item "$PSScriptRoot\crashlap.txt" $dir -Force
    $override += "RP412INPUTSCRIPT=crashlap.txt`r`n"
  }
  [IO.File]::AppendAllText("$dir\environ.ini", $override, [Text.Encoding]::ASCII)
}
#
# Retire evidence from pods this run will not use. A -PodCount 2 run after a
# -PodCount 6 run leaves podC..podF holding the SIX-pod logs and dumps, and
# a grep across the tree then reports results that belong to a different
# experiment - which has already caused one wrong reading.
#
# Files only, never the directories: they contain junctions to the dist
# asset folders, and a recursive delete through a junction can take the
# TARGET's contents with it.
#
for ($i = $PodCount; $i -lt 8; $i++) {
  $k = [char](65 + $i)
  $stale = @(
    "$Scratch\pod$k\rpl4.log"
    "$Scratch\pod$k\podbreak*.dmp"
    "$Scratch\pod$k-cdb.log"
  )
  Remove-Item $stale -Force -Confirm:$false -ErrorAction SilentlyContinue
}

foreach ($file in 'runpod.cmd','cdbrun.txt','cdbrun-gflags.txt','feeder.ps1') {
  Copy-Item "$PSScriptRoot\$file" $Scratch -Force
}
Write-Output "$PodCount pod sandboxes ready under $Scratch"