Better previous-pr behavior

Author: pwtyler

bin/validate-plugin-version.sh

@@ -91,14 +91,22 @@ main() {
 
 	# Create a pull request with a dynamic branch name
 	BRANCH_PREFIX="update-tested-up-to-version-"
-	BRANCH_NAME="$BRANCH_PREFIX$(date +%Y%m%d%H%M%S)"
+	BRANCH_NAME="${BRANCH_PREFIX}$(date +%Y%m%d%H%M%S)"
 
-	echo "Checking if a branch with prefix $BRANCH_PREFIX already exists."
-	if git ls-remote --heads origin | grep -q "$BRANCH_PREFIX"; then
-		echo "A branch with prefix $BRANCH_PREFIX already exists. Exiting."
+
+    # All PRs open on the repo. Ones created by this action will have a known branch name.
+	local OPEN_PRS
+	OPEN_PRS=$(gh pr list --state open --json number,headRefName)
+
+	# Check for exact match and exit if found
+	local EXACT_MATCH_PR_ID
+	EXACT_MATCH_PR_ID=$(echo "$OPEN_PRS" | jq -r --arg exact "$BRANCH_NAME" '.[] | select(.headRefName == $exact) | .number')
+	if [[ -n "$EXACT_MATCH_PR_ID" ]]; then
+		echo "❌ A PR already exists for branch '$BRANCH_NAME': #$EXACT_MATCH_PR_ID"
 		exit 0
 	fi
 
+
 	echo "Creating a new branch $BRANCH_NAME and pushing changes."
 	git config user.name "github-actions"
 	git config user.email "[email protected]"
@@ -142,7 +150,22 @@ main() {
 	if [[ "${PR_STATUS:-}" != "open" ]]; then
 		PR_OPTIONS="${PR_OPTIONS} --draft"
 	fi
-	gh pr create "$PR_OPTIONS"
+
+	NEW_PR_URL=$(gh pr create "$PR_OPTIONS")
+
+	local PREFIX_MATCHES
+	PREFIX_MATCHES=$(echo "$OPEN_PRS" | jq -r --arg prefix "$BRANCH_PREFIX" '.[] | select(.headRefName | startswith($prefix)) | "\(.number) \(.headRefName)"')
+	while read -r pr_line; do
+		if [[ -z "$pr_line" ]]; then
+			continue
+		fi
+		local pr_number
+		pr_number=$(echo "$pr_line" | awk '{print $1}')
+		local pr_branch
+		pr_branch=$(echo "$pr_line" | awk '{print $2}')
+		echo "🛑 Closing old PR #$pr_number from branch '$pr_branch'"
+		gh pr close "$pr_number" --comment "Superseded by $NEW_PR_URL"
+	done <<< "$PREFIX_MATCHES"
 }
 
 main