checks for new gists from a github user

check-gists.ps1

  param(
  [string]$user="andrewh")
  
function show-recentgists 
{
   param(
       [string]$user,
       [int]$count)

   $url ="https://api.github.com/users/$user/gists"

   $data=(Invoke-webrequest $url).content|convertfrom-Json
   $newgists=$data|sort-object created_at| select-object -last $count
   $newgists.url
}
  
  
  
  $url="https://api.github.com/users/$user"
  $data=Invoke-webrequest $url
  $previousfile="previous-$user.json"

  $convert=$data.content|ConvertFrom-Json
  
  if (!(test-path -path $previousfile))
  {
    write-error "First time run $previousfile not found"
    $convert|ConvertTo-Json| Out-File $previousfile 
    write-warning "$previousfile written"
    exit 1
  }
  else
  {
     $previous=(Get-Content "previous-$user.json") -join "`n" | ConvertFrom-Json
  }

  if(!($previous.public_gists -le $convert.public_gists))
  {
     write-host "Nothing to see"
  }else{
     $diffgists=$convert.public_gists-$previous.public_gists
     Write-host "Found $diffgists new Gists"
	 show-recentgists -user $user -count $diffgists
  }