Update ExportGitHubUsageStatsForOrganization.ps1

Added code to check if repo API URLs are valid, and if not, to remove them from the list of repos. This was causing an issue with repos that were recently deleted, or internal repos when permissions for the API account are not setup correctly to read private repo info.

Author: gabrielmongefranco

PowerShell-Scripts/ExportGitHubUsageStatsForOrganization.ps1

@@ -48,8 +48,22 @@ Write-Host "Getting repos..."
 $repoCount = [int]0
 try
 {
+    # Get repos
 	$repos = Get-GitHubRepository -OrganizationName $organizationName
+
+    # Filter out deleted repos
+    $repos = $repos | Where-Object {
+        try {
+            $null = Invoke-RestMethod -Uri $_.url -Method Get
+            $true
+        } catch {
+            $false
+        }
+    }
+
+    # Save count of valid repos found
 	$repoCount = [int]$repos.Count
+
 } catch {
 	Write-Host -f Red "Error while getting repository information. Ensure the organization and credentials are correct."
 }