# ============================================================================
#  build-res.ps1 - rebuild RPL4.RES from the 4.10 content sources
# ============================================================================
#
#  Assembles a build tree from three places and runs the original resource
#  compiler (Release\RPL4TOOL.exe -b). See README.md in this folder for what
#  each piece is and why it is needed.
#
#    1. TeslaRel410\CONTENT\RP    the authored content: models, solids,
#                                 audio scripts, gauge art, the .bld script
#    2. recovered\                three audio scripts missing from (1),
#                                 recovered from the sda4 developer drive.
#                                 Without STATIC.SCP nothing builds at all.
#    3. assets\RP411\             the soundbanks and the .SKL skeletons that
#                                 (1) is missing - RP412 ships complete sets
#
#  Usage: powershell -ExecutionPolicy Bypass -File tools\resbuild\build-res.ps1
#             [-Content <path>] [-Out <dir>] [-RestoreCutVehicles]
#
param(
    [string]$Content = 'C:\VWE\TeslaRel410\CONTENT\RP',
    [string]$Out     = "$env:TEMP\rp412-resbuild",
    # Uncomment dark / blkspk / blktrn in the .bld before building. They were
    # commented out after 4.10 shipped; their sources are all still here.
    [switch]$RestoreCutVehicles
)

$ErrorActionPreference = 'Stop'
$root = Split-Path -Parent (Split-Path -Parent $PSScriptRoot)
$tool = Join-Path $root 'Release\RPL4TOOL.exe'
$assets = Join-Path $root 'assets\RP411'
$recovered = Join-Path $PSScriptRoot 'recovered'

if (-not (Test-Path $tool))    { throw "$tool not found - build the solution first (BUILD.md 2)." }
if (-not (Test-Path $Content)) { throw "content tree not found: $Content" }

# --- assemble ---------------------------------------------------------------
Write-Host "Assembling build tree in $Out"
if (Test-Path $Out) { Remove-Item -Recurse -Force $Out }
New-Item -ItemType Directory -Force $Out | Out-Null
Copy-Item "$Content\*" $Out -Recurse -Force

# The soundbanks. AUDIO.INI names audio\audio1.res and audio2.res; the content
# tree carries only a 1-byte AUDIO.RES stub. RP412's copies are hash-identical
# to the 1996 originals in the pod image.
foreach ($bank in 'AUDIO1.RES', 'AUDIO2.RES') {
    Copy-Item (Join-Path $assets "AUDIO\$bank") "$Out\AUDIO\" -Force
}

# The keystone. CreateStaticAudioStreamResource opens audio\static.scp, which
# defines all 154 PatchResources by name (Translocation01 -> bank 2, patch 29
# and so on). Every model's audio script resolves its resource= names against
# them, so without this file the very first model aborts the build.
Copy-Item "$recovered\*.SCP" "$Out\AUDIO\" -Force

# Skeletons and geometry the content tree is missing (BAN/BUN/DUN/MAN.SKL and
# their S variants at least). Fill gaps only - never overwrite authored content
# with the shipped copy, so archival files stay authoritative where they exist.
$filled = 0
foreach ($src in Get-ChildItem (Join-Path $assets 'VIDEO') -File) {
    $dst = Join-Path "$Out\VIDEO" $src.Name
    if (-not (Test-Path $dst) -or (Get-Item $dst).Length -eq 0) {
        Copy-Item $src.FullName $dst -Force; $filled++
    }
}
Write-Host "  filled $filled missing VIDEO file(s)"

if ($RestoreCutVehicles) {
    $bld = Join-Path $Out 'RPL4.BLD'
    (Get-Content $bld -Raw) -replace '(?m)^//(model=(dark|blkspk|blktrn)\.mod)', '$1' |
        Set-Content $bld -Encoding ascii
    Write-Host "  restored dark, blkspk, blktrn in RPL4.BLD"
}

Copy-Item $tool $Out -Force

# --- build ------------------------------------------------------------------
# RPL4TOOL ends in _getch() (RPL4TOOL.cpp:76), so it never exits on its own
# when stdout is redirected. Run it detached and reap it once the file lands.
Write-Host "Building..."
$log = Join-Path $Out 'build.log'
$p = Start-Process -FilePath (Join-Path $Out 'RPL4TOOL.exe') `
    -ArgumentList '-b', 'rpl4.bld' -WorkingDirectory $Out `
    -RedirectStandardOutput $log -PassThru -WindowStyle Hidden
if (-not $p.WaitForExit(300000)) { Start-Sleep -Seconds 2 }
if (-not $p.HasExited) { Stop-Process -Id $p.Id -Force }

$res = Join-Path $Out 'rpl4.res'
if (-not (Test-Path $res)) {
    Get-Content $log -Tail 20 | ForEach-Object { Write-Host "  $_" }
    throw "build produced no rpl4.res - see $log"
}

# --- report -----------------------------------------------------------------
$missing = Select-String -Path $log -Pattern 'Does not exist!|is empty or missing!|has no Segments!' |
    ForEach-Object { $_.Line.Trim() } | Sort-Object -Unique
Write-Host ("rpl4.res: {0:N0} bytes" -f (Get-Item $res).Length)
if ($missing) {
    Write-Host "Unresolved inputs ($($missing.Count)) - see README.md 'What is still missing':"
    $missing | ForEach-Object { Write-Host "  $_" }
}
Write-Host "Output: $res"
Write-Host "List it with: Release\RPL4TOOL.exe -l `"$res`""