Add delete-repository-webhooks.sh

Delete all webhooks from a given repository

Author: tspascoal

gh-cli/README.md

@@ -148,6 +148,12 @@ May need to run this first in order for the gh cli to be able to have delete rep
 gh auth refresh -h github.com -s delete_repo
 ```
 
+## delete-repository-webhooks.sh
+
+Deletes all webhooks from a repository.
+
+> **Warning** This operation is not reversible.
+
 ## download-private-release-artifact.sh
 
 Downloads a release artifact from a private/internal repository. Can either download latest version or specific version, and supports file pattern matching to download one or multiple files. See [docs](https://cli.github.com/manual/gh_release_download) for more info.

gh-cli/delete-repository-webhooks.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <repo>"
+  echo "repo in the format owner/repo"
+  exit 1
+fi
+
+repo=$1
+
+# validate if repo is in format owner/repo
+if [[ ! $repo =~ ^[[:alnum:]_-]+/[[:alnum:]_-]+$ ]]; then
+  echo "ERROR: invalid repo format. Expected owner/repo"
+  exit 1
+fi
+
+# iterate on all repo webhooks and delete them
+gh api -H "X-GitHub-Api-Version: 2022-11-28" "/repos/$repo/hooks" --jq '.[].id' | while read -r id; do
+  echo "deleting webhook $id"
+  gh api -X DELETE "repos/$repo/hooks/$id"
+done 
+