# Register the native messaging host for the current Windows user.
# Does not load the Firefox extension — see README / AGENTS.md.

$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent $PSScriptRoot
$HostDir = Join-Path $Root "host"
$CmdPath = Join-Path $HostDir "firefox-agent-bridge-host.cmd"
$ManifestPath = Join-Path $HostDir "com.easygoingaming.firefox_agent_bridge.json"
$StateDir = Join-Path $env:LOCALAPPDATA "firefox-agent-bridge"
$TokenPath = Join-Path $StateDir "token"
$HostName = "com.easygoingaming.firefox_agent_bridge"
$ExtensionId = "firefox-agent-bridge@easygoingaming.com"

if (-not (Test-Path $CmdPath)) {
    throw "host launcher missing: $CmdPath"
}

New-Item -ItemType Directory -Force -Path $StateDir | Out-Null
if (-not (Test-Path $TokenPath) -or -not (Get-Content -Raw $TokenPath).Trim()) {
    $bytes = New-Object byte[] 32
    [System.Security.Cryptography.RandomNumberGenerator]::Create().GetBytes($bytes)
    $token = -join ($bytes | ForEach-Object { $_.ToString("x2") })
    [System.IO.File]::WriteAllText($TokenPath, $token)
    Write-Host "wrote $TokenPath"
} else {
    Write-Host "kept existing token at $TokenPath"
}

$manifest = @{
    name = $HostName
    description = "Firefox Agent Bridge native host"
    path = $CmdPath
    type = "stdio"
    allowed_extensions = @($ExtensionId)
} | ConvertTo-Json -Compress
[System.IO.File]::WriteAllText($ManifestPath, $manifest)
Write-Host "wrote $ManifestPath"

$regPath = "HKCU:\Software\Mozilla\NativeMessagingHosts\$HostName"
New-Item -Path $regPath -Force | Out-Null
Set-ItemProperty -Path $regPath -Name "(default)" -Value $ManifestPath
Write-Host "registered $regPath"

Write-Host ""
Write-Host "Next: in Firefox open about:debugging#/runtime/this-firefox"
Write-Host "Load Temporary Add-on and pick extension\manifest.json"
Write-Host "Token is read from $TokenPath (Authorization: Bearer ...)"