delete-preview-environment.yaml

name: Look for closed PR with label preview-environment

on:
  workflow_dispatch:
  schedule:
    - cron: "0 * * * *"

concurrency: check_pr

jobs:
  checks:
    name: Check whether a closed PR has label preview-environment
    runs-on: ubuntu-latest
    steps:
      - uses: actions/setup-node@v3
        with:
          node-version: 16
      - name: Helm Installation
        uses: azure/setup-helm@v3
      - name: Install kubectl
        uses: azure/setup-kubectl@v3
      - name: install npm packages and kubernetes
        run: |
          npm install @kubernetes/client-node nodejs-helm bluebird git-clone
          mkdir -p ~/.kube
          echo "$KUBECONFIG_TEXT" > ~/.kube/config
          chmod 600 ~/.kube/config
          helm repo add searxng https://charts.searxng.org
          helm repo update
        env:
          KUBECONFIG_TEXT: ${{secrets.KUBECONFIG_TEXT}}
      - name: Check whether a closed PR has label preview-environment
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_PAT }}
          script: |
            const k8s = require('@kubernetes/client-node');
            const clone = require('git-clone/promise');
            let Promise = require("bluebird");
            const Helm = require("nodejs-helm").Helm;
            let helm = Promise.promisifyAll(new Helm({helmCommand: "helm"}));

            const kc = new k8s.KubeConfig();
            kc.loadFromDefault();
            const k8sApi = kc.makeApiClient(k8s.CoreV1Api);
            const pullrequests = await github.rest.pulls.list({
              owner: "searxng",
              repo: "searxng",
              per_page: 100,
              state: "closed",
            })
            for (const pullrequest of pullrequests.data) {
              if (pullrequest.labels.some(item => item.name === 'preview-environment')
                  || pullrequest.labels.some(item => item.name === 'preview-environment-commented')) {
                const prNumber = pullrequest.number;
                var options = {
                    releaseName: 'searxng-preview',
                    namespace: `searxng-${prNumber}`
                }
                await helm.uninstallAsync(options);
                await k8sApi.deleteNamespace(`searxng-${prNumber}`, {});
                if (pullrequest.labels.some(item => item.name === 'preview-environment')) {
                  await github.rest.issues.removeLabel({
                    issue_number: prNumber,
                    owner: "searxng",
                    repo: "searxng",
                    name: 'preview-environment'
                  });
                }
                  
                if (pullrequest.labels.some(item => item.name === 'preview-environment-commented')) {
                  await github.rest.issues.removeLabel({
                    issue_number: prNumber,
                    owner: "searxng",
                    repo: "searxng",
                    name: 'preview-environment-commented'
                  })
                }
              }
            }