<#
  Build the distributable claude-mode package.

  Produces, under dist/<version>/ :
    claude-mode-<version>.zip   the payload (script, key helper, presets, installer)
    manifest.json               version + package name + SHA-256

  The Arkylx Index serves that directory, plus dist/bootstrap.ps1 as
  /tools/claude-mode/install.ps1. See ARKYLX_INDEX_INTEGRATION.md.
#>

[CmdletBinding()]
param([string] $OutRoot)

Set-StrictMode -Version 1.0
$ErrorActionPreference = 'Stop'

$root = Split-Path -Parent $PSScriptRoot
if (-not $OutRoot) { $OutRoot = Join-Path $root 'dist' }

$version = (Get-Content (Join-Path $root 'VERSION') -Raw).Trim()
if (-not $version) { throw 'VERSION file is empty' }

Write-Host "building claude-mode $version" -ForegroundColor Cyan

$stage = Join-Path ([System.IO.Path]::GetTempPath()) ("cm-stage-" + [Guid]::NewGuid().ToString('N').Substring(0, 8))
New-Item -ItemType Directory -Path (Join-Path $stage 'bin')     -Force | Out-Null
New-Item -ItemType Directory -Path (Join-Path $stage 'presets') -Force | Out-Null

# Everything the installer needs, and nothing else - no README, no docs, no
# .git. The payload is what lands on a user's machine.
Copy-Item (Join-Path $root 'claude-mode.ps1')     $stage -Force
Copy-Item (Join-Path $root 'install.ps1')         $stage -Force
Copy-Item (Join-Path $root 'profile-snippet.ps1') $stage -Force
Copy-Item (Join-Path $root 'VERSION')             $stage -Force
Get-ChildItem (Join-Path $root 'bin')     -File | ForEach-Object { Copy-Item $_.FullName (Join-Path $stage 'bin')     -Force }
Get-ChildItem (Join-Path $root 'presets') -File | ForEach-Object { Copy-Item $_.FullName (Join-Path $stage 'presets') -Force }

# Refuse to ship a package whose main script does not parse - a broken payload
# would be installed by every user before anyone noticed.
$errs = $null
[void][System.Management.Automation.Language.Parser]::ParseFile((Join-Path $stage 'claude-mode.ps1'), [ref]$null, [ref]$errs)
if ($errs.Count -gt 0) {
    $errs | ForEach-Object { Write-Host "  L$($_.Extent.StartLineNumber): $($_.Message)" -ForegroundColor Red }
    throw 'claude-mode.ps1 does not parse - refusing to package'
}
foreach ($p in (Get-ChildItem (Join-Path $stage 'presets') -File)) {
    try { [void](Get-Content $p.FullName -Raw | ConvertFrom-Json) }
    catch { throw "preset $($p.Name) is not valid JSON - refusing to package" }
}
Write-Host '  ok   payload validated' -ForegroundColor Green

$outDir = Join-Path $OutRoot $version
if (-not (Test-Path -LiteralPath $outDir)) { New-Item -ItemType Directory -Path $outDir -Force | Out-Null }

$zipName = "claude-mode-$version.zip"
$zipPath = Join-Path $outDir $zipName
if (Test-Path -LiteralPath $zipPath) { Remove-Item -LiteralPath $zipPath -Force }
Compress-Archive -Path (Join-Path $stage '*') -DestinationPath $zipPath -Force

$sha = (Get-FileHash -LiteralPath $zipPath -Algorithm SHA256).Hash.ToLower()

$manifest = [ordered]@{
    tool     = 'claude-mode'
    version  = $version
    package  = $zipName
    sha256   = $sha
    size     = (Get-Item $zipPath).Length
    requires = [ordered]@{ powershell = '5.1'; os = 'windows' }
    entry    = 'install.ps1'
}
$manifest | ConvertTo-Json -Depth 5 |
    Set-Content -LiteralPath (Join-Path $outDir 'manifest.json') -Encoding UTF8

# --- POSIX payload (Linux + macOS) -----------------------------------------
# Shipped as a tar.gz because zip does not preserve the executable bit, and the
# installer must be runnable straight out of the archive.
$posixStage = Join-Path ([System.IO.Path]::GetTempPath()) ("cm-posix-" + [Guid]::NewGuid().ToString('N').Substring(0, 8))
New-Item -ItemType Directory -Path (Join-Path $posixStage 'linux')   -Force | Out-Null
New-Item -ItemType Directory -Path (Join-Path $posixStage 'presets') -Force | Out-Null
Get-ChildItem (Join-Path $root 'linux')   -File | ForEach-Object { Copy-Item $_.FullName (Join-Path $posixStage 'linux')   -Force }
Get-ChildItem (Join-Path $root 'presets') -File | ForEach-Object { Copy-Item $_.FullName (Join-Path $posixStage 'presets') -Force }
Copy-Item (Join-Path $root 'VERSION') $posixStage -Force

# Shell scripts authored on Windows carry CRLF, which makes the kernel reject
# the "#!/usr/bin/env bash" line. Normalise before packaging.
Get-ChildItem (Join-Path $posixStage 'linux') -File | ForEach-Object {
    $text = [System.IO.File]::ReadAllText($_.FullName) -replace "`r`n", "`n"
    [System.IO.File]::WriteAllText($_.FullName, $text, (New-Object System.Text.UTF8Encoding($false)))
}

$tarName = "claude-mode-$version-posix.tar.gz"
$tarPath = Join-Path $outDir $tarName
if (Test-Path -LiteralPath $tarPath) { Remove-Item -LiteralPath $tarPath -Force }
& tar.exe -czf $tarPath -C $posixStage 'linux' 'presets' 'VERSION'
if ($LASTEXITCODE -ne 0) { throw 'tar failed - cannot build the POSIX package' }

$shaPosix = (Get-FileHash -LiteralPath $tarPath -Algorithm SHA256).Hash.ToLower()
[ordered]@{
    tool     = 'claude-mode'
    version  = $version
    package  = $tarName
    sha256   = $shaPosix
    size     = (Get-Item $tarPath).Length
    requires = [ordered]@{ bash = '4.0'; python3 = '3.6'; os = 'linux,darwin' }
    entry    = 'linux/install.sh'
} | ConvertTo-Json -Depth 5 |
    Set-Content -LiteralPath (Join-Path $outDir 'manifest.posix.json') -Encoding UTF8

Remove-Item -LiteralPath $posixStage -Recurse -Force -ErrorAction SilentlyContinue
Write-Host "  ok   $tarPath" -ForegroundColor Green
Write-Host "  ok   sha256 $shaPosix" -ForegroundColor Green

# "latest" is a copy rather than a symlink so a plain static file server can
# serve it with no extra configuration.
$latest = Join-Path $OutRoot 'latest'
if (-not (Test-Path -LiteralPath $latest)) { New-Item -ItemType Directory -Path $latest -Force | Out-Null }
Copy-Item $zipPath (Join-Path $latest $zipName) -Force
Copy-Item (Join-Path $outDir 'manifest.json') (Join-Path $latest 'manifest.json') -Force
Copy-Item $tarPath (Join-Path $latest $tarName) -Force
Copy-Item (Join-Path $outDir 'manifest.posix.json') (Join-Path $latest 'manifest.posix.json') -Force

Remove-Item -LiteralPath $stage -Recurse -Force -ErrorAction SilentlyContinue

Write-Host "  ok   $zipPath" -ForegroundColor Green
Write-Host "  ok   sha256 $sha" -ForegroundColor Green
Write-Host "  ok   also copied to dist/latest/" -ForegroundColor Green