Now calls PR API

Always work with latest information.
Also, we are now dependent on the token, to be provided as action input.

entrypoint.sh

@@ -2,13 +2,39 @@
 
 set -e
 
+#Making sure we have the token
+if [[ -z "$GITHUB_TOKEN" ]]; then
+  echo "Set the GITHUB_TOKEN env variable."
+  exit 1
+fi
+
 # skip if not a PR
 echo "Checking if a PR command..."
 (jq -r ".pull_request.url" "$GITHUB_EVENT_PATH") || exit 78
 
-title=$(jq -r ".pull_request.title" "$GITHUB_EVENT_PATH")
-labels=$(jq -r ".pull_request.labels" "$GITHUB_EVENT_PATH")
+#Setting Required Headers
+API_HEADER="Accept: application/vnd.github.v3+json; application/vnd.github.antiope-preview+json"
+AUTH_HEADER="Authorization: token ${GITHUB_TOKEN}"
+
+#Extracting pull request number
+number=$(jq -r ".pull_request.number" "$GITHUB_EVENT_PATH")
+
+#Calling the PR API to fetch latest info
+#If the action had intially failed due to addition of a label or editing the title, it should pass if manually re-triggered
+#later on, so we need to always work on the latest information.
+RESPONSE=$(curl -s \
+    -H "Content-Type: application/json" \
+    -H "${AUTH_HEADER}" \
+    -H "${API_HEADER}" \
+    "https://api.github.com/repos/${GITHUB_REPOSITORY}/pulls/${number}")
+
+
+#Extracting Title & Lables
+title=$(jq ".title" <<< "$RESPONSE")
+labels=$(jq ".labels" <<< "$RESPONSE")
 
+#Block if suspect words are found.
+#Todo - words to be provided as action input.
 checkForBlockingWords(){
     if  echo "${1}  ${2}" | grep -iE 'WIP|do not merge|backend not live'
     then