fix: add check for empty workflow runs return on initial run

[jgutenplan]

Update get old workflow runs to return an empty string when there are no previous workflow runs. This solves running a new workflow in another repo which fails with 404 on get old workflow runs in current master branch.

Changed: get_workflow_runs() { since=${1:?}

query="event=workflow_dispatch&created=>=$since${INPUT_GITHUB_USER+&actor=}${INPUT_GITHUB_USER}&per_page=100"

echo "Getting workflow runs using query: ${query}" >&2

api "workflows/${INPUT_WORKFLOW_FILE_NAME}/runs?${query}" | jq -r '.workflow_runs[].id' | sort # Sort to ensure repeatable order, and lexicographically for compatibility with join }

to: get_workflow_runs() { since=${1:?}

query="event=workflow_dispatch&created=>=$since${INPUT_GITHUB_USER+&actor=}${INPUT_GITHUB_USER}&per_page=100"

echo "Getting workflow runs using query: ${query}" >&2

runs=$(api "workflows/${INPUT_WORKFLOW_FILE_NAME}/runs?${query}")

Check if the output is empty or contains an error message

if [ -z "$runs" ] || [[ $runs == "message" ]]; then echo "" # Return an empty string or a default value else echo "$runs" | jq -r '.workflow_runs[].id' | sort fi }