ChefBot.ps1

# Gets a list of open cards in a Trello board, selects a
# random one, and posts to slack as a lunch recommendation.

Import-Module SlackPS

# Slack
$slack_uri='<your_webhook_uri_here>'
$slack_channel = '<your_channel_here>'

# Trello
$token='<your_trello_token>'
$key='<your_trello_key>'
$board_id='<your_trello_board-id>'

#To find your Trello board id:
#$boards = Invoke-RestMethod ("https://api.trello.com/1/members/my/boards/?token=$token&key=$key")

$cards = @()
$api = Invoke-RestMethod "https://api.trello.com/1/boards/$board_id`?token=$token&key=$key&lists=open&cards=open"

$exclude=@(<any_lists_to_exclude>)
$lists = $api.lists.where({$_.name -notin $exclude})

foreach($list in $lists.id) {
    $cards += (Invoke-RestMethod "https://api.trello.com/1/lists/$list`?fields=name&cards=open&card_fields=name&key=$key&token=$token")
}

$random_card = $cards.cards | Get-Random -Count 1

$suggestion = Invoke-RestMethod "https://api.trello.com/1/cards/$($random_card.id)?key=$key&token=$token"

#region Send to slack

    $slackParams = @{
        Uri = $slack_uri
        Channel = $slack_channel
        Message = "May I recommend $($suggestion.name) for lunch today? $($suggestion.shortUrl)"
        Username = 'ChefBot'
        Emoji = 'fork_and_knife'
    }

    Send-SlackMessage @slackParams

#endregion