Small script for sending messages in slack.

send-slack-messages.ps1

<# 

# How install

1. Go to https://api.slack.com/apps -> Select workspace -> Create App -> create app from manifest
1.1 Or go to <Workspace> -> Administration -> Manage Apps -> Build -> Create App -> create app from manifest

```yaml
display_information:
    name: Shell Services
oauth_config:
    scopes:
        user:
            - chat:write
settings:
    org_deploy_enabled: false
    socket_mode_enabled: false
    token_rotation_enabled: false
```

2. Go to "QAuth&Permission" -> "Install to Workspace"
3. Copy "User OAuth Token" to variable $token
4. Set up your settings: workingTime, restingTime, messages...

# How using

- from powershell: `ashamin-tr-send-slack-message.ps1 swt` -> send to channel work time
- from powershell: `ashamin-tr-send-slack-message.ps1 rest` -> send to channel resting up/down
#>

$token = ""

$workingTime = New-TimeSpan -Hours 8 -Minutes 0
$restingTime = New-TimeSpan -Hours 1 -Minutes 0
$messageRestingUp = "Перерыв начался"
$messageRestingDown = "Перерыв закончен"

$tempFileName = ".temp_of_script_send_slack_messages"
$tempFile = Join-Path -Path $env:USERPROFILE -ChildPath $tempFileName

$channelId = "C011LEDV3MH" 

function Send-Slack{
    # Add the "Incoming WebHooks" integration to get started: https://slack.com/apps/A0F7XDUAZ-incoming-webhooks
    param (
        [Parameter(Mandatory=$true, Position=0)]$Text,
        $Url="https://hooks.slack.com/services/xxxxx", #Put your URL here so you don't have to specify it every time.
        # Parameters below are optional and will fall back to the default setting for the webhook.
        $Channel # Channel to post message. Can be in the format "@username" or "#channel"
    )
    
    $postSlackMessage = @{token=$token;channel=$Channel; text=$Text}
    Invoke-RestMethod -Method Post -Uri "https://slack.com/api/chat.postMessage" -Body $postSlackMessage | Out-Null   
}



Function Send-Work-Time{
    $currentDateTime = Get-Date 

    $endDateTime = $currentDateTime + $workingTime + $restingTime

    $messageToSlack = $currentDateTime.ToString("HH:mm") + " - " + $endDateTime.ToString("HH:mm")

    Send-Slack -Text $messageToSlack -Channel $channelId
}


Function Send-Rest{

    if(Test-Path $tempFile){
        Remove-Item -Path $tempFile
        $messageToSlack = $messageRestingDown
    }
    else
    {
        New-Item -Path $env:USERPROFILE -Name $tempFileName -ItemType "file" | Out-Null
        $messageToSlack = $messageRestingUp
    }
    if(-not([string]::IsNullOrEmpty($messageToSlack))){
        Send-Slack -Text $messageToSlack -Channel $channelId
    }
}

if([string]::IsNullOrEmpty($token)){
    Write-Host "You need set up the script. Read a header in the script."
    Return
}
if([string]::IsNullOrEmpty($args[0])){
    Write-Host "Input your choice: 
    - [swt]: send work time to slack
    - [rest]: send status of rest up/down"


    $userChoice = Read-Host
    
    if([string]::IsNullOrEmpty($userChoice)){ Return }
}
else
{
    $userChoice = $args[0]
}



if($userChoice -eq "swt") { Send-Work-Time; Return }
if($userChoice -eq "rest") { Send-Rest; Return }

"I don't know this command"