# sessionStart: reset changelog runtime markers and skip checks outside agent mode.
$utf8 = New-Object System.Text.UTF8Encoding($false)
[Console]::InputEncoding = $utf8
[Console]::OutputEncoding = $utf8

$inputPayload = [Console]::In.ReadToEnd()
$mode = $null

try {
    if (-not [string]::IsNullOrWhiteSpace($inputPayload)) {
        $data = $inputPayload | ConvertFrom-Json
        if ($data.composer_mode -is [string]) {
            $mode = $data.composer_mode
        }
    }
} catch {
    $mode = $null
}

$cursorDir = Split-Path -Parent $PSScriptRoot
$ackFile = Join-Path $cursorDir 'changelog\.changelog-ack'
$sessionMarker = Join-Path $cursorDir 'changelog\.session-start'
Remove-Item -LiteralPath $ackFile -Force -ErrorAction SilentlyContinue
try {
    $stream = [System.IO.File]::Open(
        $sessionMarker,
        [System.IO.FileMode]::Create,
        [System.IO.FileAccess]::Write,
        [System.IO.FileShare]::ReadWrite
    )
    $stream.Dispose()
} catch {
    # Runtime marker failure must not block session startup.
}

if (-not [string]::IsNullOrWhiteSpace($mode) -and $mode -ne 'agent') {
    $result = [ordered]@{
        env = [ordered]@{
            CURSOR_SKIP_CHANGELOG = '1'
            CURSOR_COMPOSER_MODE = $mode
        }
    }
    [Console]::Out.WriteLine(($result | ConvertTo-Json -Compress -Depth 4))
} else {
    [Console]::Out.WriteLine('{}')
}

exit 0