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Telegram_bot_CLI.ps1
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Telegram_bot_CLI.ps1
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#Author: https://github.com/terracuda/workpow
#Welcome message
clear-host
echo ""
echo " ___________________________ "
echo "| |"
echo "| Powerbot v1.7 |"
echo "| Author: TerraCuda |"
echo "|___________________________|"
echo ""
#Variables
$BotToken = "481745821:AAF1WitceQhjdfMOfYWOYM-pgVylomXKtm1A" #bot_token, e.g: "481745821:AAF1WitceQhjdfMOfYWOYM-pgVylomXKtm1A"
$ChatID = 250914301 #ChatID with bot, e.g: "250914301"
$LoopSleep = 3 #Time to sleep for each loop before checking if a message with the trigger-word was received
$maxlength = 4090 #Maximum allowed length for one part of the message
#Get and show bot information
$botinfo = ((Invoke-WebRequest -Uri https://api.telegram.org/bot$BotToken/getMe).Content | ConvertFrom-Json).result
$botid = ($botinfo).id
$username = ($botinfo).username
$firstname = ($botinfo).first_name
Write-Host "Username:" $username
Write-Host "First name:" $firstname
Write-Host "Bot ID:" $botid
Write-Host "Connected. Checking for new commands every $LoopSleep seconds."
#Get the Last Message Time at the beginning of the script:When the script is ran the first time, it will ignore any last message received!
$BotUpdates = Invoke-WebRequest -Uri "https://api.telegram.org/bot$($BotToken)/getUpdates"
$BotUpdatesResults = [array]($BotUpdates | ConvertFrom-Json).result
$LastMessageTime_Origin = $BotUpdatesResults[$BotUpdatesResults.Count-1].message.date
#Read the responses in a while cycle
$DoNotExit = 1
#$PreviousLoop_LastMessageTime is going to be updated at every cycle (if the last message date changes)
$PreviousLoop_LastMessageTime = $LastMessageTime_Origin
$SleepStartTime = [Int] (get-date -UFormat %s) #This will be used to check if the $SleepTime has passed yet before sending a new notification out
While ($DoNotExit) {
Sleep -Seconds $LoopSleep
#Reset variables that might be dirty from the previous cycle
$LastMessageText = ""
$CommandToRun = ""
$CommandToRun_Result = ""
$CommandToRun_SimplifiedOutput = ""
$Message = ""
#Get the current Bot Updates and store them in an array format to make it easier
$BotUpdates = Invoke-WebRequest -Uri "https://api.telegram.org/bot$($BotToken)/getUpdates" -ErrorAction SilentlyContinue
$BotUpdatesResults = [array]($BotUpdates | ConvertFrom-Json).result
#Get just the last message:
$LastMessage = $BotUpdatesResults[$BotUpdatesResults.Count-1]
#Get the last message time
$LastMessageTime = $LastMessage.message.date
#If the $LastMessageTime is newer than $PreviousLoop_LastMessageTime, then the user has typed something!
If ($LastMessageTime -gt $PreviousLoop_LastMessageTime) {
#Looks like there's a new message!
#Update $PreviousLoop_LastMessageTime with the time from the latest message
$PreviousLoop_LastMessageTime = $LastMessageTime
#Update the LastMessageTime
$LastMessageTime = $LastMessage.Message.Date
#Update the $LastMessageText
$LastMessageText = $LastMessage.Message.Text
Switch -Wildcard ($LastMessageText) {
"run *" { #Important: run with a space
$CommandToRun = ($LastMessageText -split ("run "))[1] #This will remove "run "
$Message = "Ok $($LastMessage.Message.from.first_name), try to run the following command: `n<b>$($CommandToRun)</b> `nPlease wait.."
$SendMessage = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($BotToken)/sendMessage?chat_id=$($ChatID)&text=$($Message)&parse_mode=html"
#Run the command
Try {
Invoke-Expression $CommandToRun | Out-String | % {
$CommandToRun_Result += "`n $($_)"
}
}
Catch {
$CommandToRun_Result = $_.Exception.Message
}
$Message = "$($LastMessage.Message.from.first_name), I've ran <b>$($CommandToRun)</b> and this is the output:`n$CommandToRun_Result"
$charcount = $Message | Measure-Object -Character
$curlength = $charcount.Characters
#
if($curlength -gt $maxlength ) {
$chunks = [math]::Truncate($curlength/$maxlength)
$message | Out-File temp.txt
$bytes = Get-Content temp.txt -Encoding byte
for ($i=0; $i -le $chunks; $i++)
{
$start = $i*$maxlength*2
$end = (($i+1)*$maxlength)*2-1
$chunk = [System.Text.Encoding]::Unicode.GetString($bytes[$start..$end])
$SendMessage = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($BotToken)/sendMessage?chat_id=$($ChatID)&text=$chunk&parse_mode=html"
Start-Sleep -m 400
}
Remove-item -Path .\temp.txt
}
else {
$SendMessage = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($BotToken)/sendMessage?chat_id=$($ChatID)&text=$($Message)&parse_mode=html"
}
}
"quit_script" {
#The user wants to stop the script
write-host "The script will end in 5 seconds"
$ExitMessage = "$($LastMessage.Message.from.first_name) has requested the script to be terminated. It will need to be started again in order to accept new messages!"
$ExitRestResponse = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($BotToken)/sendMessage?chat_id=$($ChatID)&text=$($ExitMessage)&parse_mode=html"
Sleep -seconds 5
$DoNotExit = 0
}
default {
#The message sent is unknown
$Message = "Sorry $($LastMessage.Message.from.first_name), but I don't understand ""$($LastMessageText)""!"
$SendMessage = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($BotToken)/sendMessage?chat_id=$($ChatID)&text=$($Message)&parse_mode=html"
}
}
}
}