# This workflow prunes old workflow runs for an entire repository.

name: "Chore - Prune old builds"

on:
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:
jobs:
  prune:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Prune cancelled/skipped runs
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_ACTIONS_PERSONAL_ACCESS_TOKEN }}
          script: |
            const cancelled = await github.rest.actions.listWorkflowRunsForRepo({
              owner: context.repo.owner,
              per_page: 100,
              repo: context.repo.repo,
              status: 'cancelled',
            });

            const skipped = await github.rest.actions.listWorkflowRunsForRepo({
              owner: context.repo.owner,
              per_page: 100,
              repo: context.repo.repo,
              status: 'skipped',
            });

            for (const response of [cancelled, skipped]) {
              for (const run of response.data.workflow_runs) {
                console.log(`Run id ${run.id} of '${run.name}' is a cancelled/skipped run. Deleting...`);
                await github.rest.actions.deleteWorkflowRun({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  run_id: run.id
                });
              }
            }

      - name: Prune runs older than 3 days
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_ACTIONS_PERSONAL_ACCESS_TOKEN }}
          script: |
            const days_to_expiration = 3;
            const ms_in_day = 86400000;
            const now = Date.now();
            const pages = 5;

            // we don't want to prune old runs from test.yml
            // because we track the duration of runs over time

            const workflows = [
              'cleanup.yml',
              'closed-issues.yml',
              'depsreview.yml',
              'label-actions.yml',
              'lock.yml',
              'sonarcloud.yml',
              'stale.yml'
            ]

            let runs_to_delete = [];

            for (const workflow of workflows) {
              for (let page = 0; page < pages; page += 1) {
                let response = await github.rest.actions.listWorkflowRuns({
                  owner: context.repo.owner,
                  page: page,
                  per_page: 100,
                  repo: context.repo.repo,
                  workflow_id: workflow
                });

                if (response.data.workflow_runs.length > 0) {
                  for (const run of response.data.workflow_runs) {
                    if (now - Date.parse(run.created_at) > ms_in_day * days_to_expiration) {
                      runs_to_delete.push([run.id, run.name]);
                    }
                  }
                }
              }
            }

            for (const run of runs_to_delete) {
              console.log(`Run id ${run[0]} of '${run[1]}' is older than ${days_to_expiration} days. Deleting...`);
              try {
                await github.rest.actions.deleteWorkflowRun({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  run_id: run[0]
                });
              } catch (error) {
                // ignore errors
              }
            }