$ErrorActionPreference = "Stop"

$repoRoot = Split-Path -Parent $PSScriptRoot
$chatWindow = Join-Path $repoRoot "src\AxCopilot\Views\ChatWindow.xaml.cs"
$clawQuickstart = Join-Path $repoRoot "claw-code\en\quickstart.md"
$outFile = Join-Path $repoRoot "docs\TOOL_PARITY_REPORT.md"

if (-not (Test-Path $chatWindow)) {
    throw "ChatWindow.xaml.cs not found: $chatWindow"
}

$axSlash = Select-String -Path $chatWindow -Pattern '^\s*\["/[^"]+"\]\s*=' |
    ForEach-Object {
        if ($_.Line -match '^\s*\["(/[^"]+)"\]\s*=') { $Matches[1] }
    } |
    Where-Object { -not [string]::IsNullOrWhiteSpace($_) } |
    Sort-Object -Unique

$clawSlash = @()
if (Test-Path $clawQuickstart) {
    $clawSlash = Select-String -Path $clawQuickstart -Pattern '^\|\s*`/[^`]+`\s*\|' |
        ForEach-Object {
            if ($_.Line -match '`\s*(/[a-zA-Z0-9\-]+)\s*`') { $Matches[1] }
        } |
        Where-Object { $_.StartsWith("/") } |
        Sort-Object -Unique
}

$axOnly = $axSlash | Where-Object { $clawSlash -notcontains $_ }
$common = $axSlash | Where-Object { $clawSlash -contains $_ }
$clawOnly = $clawSlash | Where-Object { $axSlash -notcontains $_ }

$lines = New-Object System.Collections.Generic.List[string]
$lines.Add("# Tool/Slash Parity Report")
$lines.Add("")
$lines.Add("Generated: $(Get-Date -Format 'yyyy-MM-dd HH:mm:ss')")
$lines.Add("")
$lines.Add("## Summary")
$lines.Add("- AX slash count: $($axSlash.Count)")
$lines.Add("- claw-code slash count: $($clawSlash.Count)")
$lines.Add("- Common: $($common.Count)")
$lines.Add("- AX only: $($axOnly.Count)")
$lines.Add("- claw-code only: $($clawOnly.Count)")
$lines.Add("")

$lines.Add("## Common")
foreach ($s in $common) { $lines.Add("- $s") }
$lines.Add("")

$lines.Add("## AX Only")
foreach ($s in $axOnly) { $lines.Add("- $s") }
$lines.Add("")

$lines.Add("## claw-code Only")
foreach ($s in $clawOnly) { $lines.Add("- $s") }
$lines.Add("")

$lines.Add("## Notes")
$lines.Add("- claw-code source baseline: claw-code/en/quickstart.md")
$lines.Add("- AX source baseline: src/AxCopilot/Views/ChatWindow.xaml.cs")

Set-Content -Path $outFile -Value $lines -Encoding UTF8
Write-Output "Generated: $outFile"