$FilePath = ""
$BotToken = ""
$ChatID   = ""


# Переменные
$LastAccessTime = (Get-Item $FilePath).LastAccessTime
$LastWriteTime  = (Get-Item $FilePath).LastWriteTime
$FileExists     = Test-Path $FilePath

# Основной цикл
while ($true) {
    Start-Sleep -Seconds 5

    $CurrentExists = Test-Path $FilePath

    if ($CurrentExists) {
        $CurrentAccessTime = (Get-Item $FilePath).LastAccessTime
        $CurrentWriteTime  = (Get-Item $FilePath).LastWriteTime

        if ($CurrentAccessTime -ne $LastAccessTime) {
            $LastAccessTime = $CurrentAccessTime
            $msg = "File open: `"$FilePath`" в $CurrentAccessTime"
            Invoke-RestMethod -Uri "https://api.telegram.org/bot$BotToken/sendMessage" `
                -Method POST -Body @{
                    chat_id = $ChatID
                    text    = $msg
                    parse_mode = "Markdown"
                }
        }

        if ($CurrentWriteTime -ne $LastWriteTime) {
            $LastWriteTime = $CurrentWriteTime
            $msg = "File modified: `"$FilePath`" в $CurrentWriteTime"
            Invoke-RestMethod -Uri "https://api.telegram.org/bot$BotToken/sendMessage" `
                -Method POST -Body @{
                    chat_id = $ChatID
                    text    = $msg
                    parse_mode = "Markdown"
                }
        }
    } elseif ($FileExists) {
        $FileExists = $false
        $msg = "File deleted: `"$FilePath`""
        Invoke-RestMethod -Uri "https://api.telegram.org/bot$BotToken/sendMessage" `
            -Method POST -Body @{
                chat_id = $ChatID
                text    = $msg
                parse_mode = "Markdown"
            }
    } elseif (-not $FileExists -and $CurrentExists) {
        $FileExists = $true
        $LastAccessTime = (Get-Item $FilePath).LastAccessTime
        $LastWriteTime  = (Get-Item $FilePath).LastWriteTime
        $msg = "File restored: `"$FilePath`""
        Invoke-RestMethod -Uri "https://api.telegram.org/bot$BotToken/sendMessage" `
            -Method POST -Body @{
                chat_id = $ChatID
                text    = $msg
                parse_mode = "Markdown"
            }
    }
}