.github/workflows/testserver.yml

name: Deploy to Testserver

on:
  pull_request:
    types: [labeled]

concurrency: test-servers

env:
  RAW_URL: https://raw.githubusercontent.com/${{ github.repository }}/${{ github.sha }}

jobs:
  # Get an up to date version of the label list. github.event.pull_request.labels seems to sometimes be outdated
  # if the run was waiting for a while, which can cause duplicate deployments
  get-labels:
    runs-on: ubuntu-latest
    outputs:
      labels: ${{ steps.get-labels.outputs.result }}
    steps:
      - name: Get PR labels
        id: get-labels
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const response = await github.rest.issues.listLabelsOnIssue({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number
            })
            const labels = response.data
            return labels.map(label => label.name)


  # Check that the build job has run successfully before deploying
  check-build-status:
    needs: [ get-labels ]
    runs-on: ubuntu-latest
    # Only run workflow if the added label is a deploy label
    if: contains(needs.get-labels.outputs.labels, 'deploy:artemis-test')
    steps:
      - name: Get latest successful build for branch
        id: check_build
        uses: octokit/request-action@v2.x
        with:
          route: GET /repos/${{ github.repository }}/actions/workflows/build.yml/runs?event=pull_request&status=success&head_sha=${{ github.event.pull_request.head.sha }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      # Remove deployment-error label if new run is started
      - uses: actions-ecosystem/action-remove-labels@v1
        if: fromJSON(steps.check_build.outputs.data).total_count > 0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: |
            deployment-error

      # In case of invalid build status, remove deploy labels
      - uses: actions-ecosystem/action-remove-labels@v1
        if: fromJSON(steps.check_build.outputs.data).total_count == 0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: |
            deploy:artemis-test1
            deploy:artemis-test2
            deploy:artemis-test3
            deploy:artemis-test4
            deploy:artemis-test5
            deploy:artemis-test6
            deploy:artemis-test7
            deploy:artemis-test8
            deploy:artemis-test9
            deploy:artemis-test10

      - name: Check if latest push had successful build
        if: fromJSON(steps.check_build.outputs.data).total_count == 0
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: '### ⚠️ Unable to deploy to test servers ⚠️\nThe docker build needs to run through before deploying.'
            })
            core.setFailed('The build needs to run through first. Please wait for the build to finish and then try again.')


  # Check which test server to deploy to based on the label
  filter-matrix:
    needs: [ get-labels, check-build-status ]
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          # Commented out environments are not yet available and will be enabled in the future
          - environment: artemis-test1.artemis.cit.tum.de
            label-identifier: artemis-test1
            url: https://artemis-test1.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test1.artemis.cit.tum.de
            folder: /opt/artemis

          - environment: artemis-test2.artemis.cit.tum.de
            label-identifier: artemis-test2
            url: https://artemis-test2.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test2.artemis.cit.tum.de
            folder: /opt/artemis

          - environment: artemis-test3.artemis.cit.tum.de
            label-identifier: artemis-test3
            url: https://artemis-test3.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test3.artemis.cit.tum.de
            folder: /opt/artemis

          - environment: artemis-test4.artemis.cit.tum.de
            label-identifier: artemis-test4
            url: https://artemis-test4.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test4.artemis.cit.tum.de
            folder: /opt/artemis

          - environment: artemis-test5.artemis.cit.tum.de
            label-identifier: artemis-test5
            url: https://artemis-test5.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test5.artemis.cit.tum.de
            folder: /opt/artemis

          - environment: artemis-test6.artemis.cit.tum.de
            label-identifier: artemis-test6
            url: https://artemis-test6.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test6.artemis.cit.tum.de
            folder: /opt/artemis
            host_keys: |

          - environment: artemis-test7.artemis.cit.tum.de
            label-identifier: artemis-test7
            url: https://artemis-test7.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test7.artemis.cit.tum.de
            folder: /opt/artemis
            host_keys: |

          #- environment: artemis-test8.artemis.cit.tum.de
          #  label-identifier: artemis-test8
          #  url: https://artemis-test8.artemis.cit.tum.de
          #  user: deployment
          #  hosts: artemis-test8.artemis.cit.tum.de
          #  folder: /opt/artemis

          - environment: artemis-test9.artemis.cit.tum.de
            label-identifier: artemis-test9
            url: https://artemis-test9.artemis.cit.tum.de
            user: deployment
            hosts: artemis-test9.artemis.cit.tum.de
            folder: /opt/artemis
            host_keys: |

          #- environment: artemis-test10.artemis.cit.tum.de
          #  label-identifier: artemis-test10
          #  url: https://artemis-test10.artemis.cit.tum.de
          #  user: deployment
          #  hosts: artemis-test10.artemis.cit.tum.de
          #  folder: /opt/artemis
    outputs:
      TS1: ${{ steps.filter.outputs.artemis-test1 || '' }}
      TS2: ${{ steps.filter.outputs.artemis-test2 || '' }}
      TS3: ${{ steps.filter.outputs.artemis-test3 || '' }}
      TS4: ${{ steps.filter.outputs.artemis-test4 || '' }}
      TS5: ${{ steps.filter.outputs.artemis-test5 || '' }}
      TS6: ${{ steps.filter.outputs.artemis-test6 || '' }}
      #TS7: ${{ steps.filter.outputs.artemis-test7 || '' }}
      #TS8: ${{ steps.filter.outputs.artemis-test8 || '' }}
      TS9: ${{ steps.filter.outputs.artemis-test9 || '' }}
      #TS10: ${{ steps.filter.outputs.artemis-test10 || '' }}
    steps:
      - run: |
          echo "$DEPLOY_LABEL"
          echo '${{ contains(fromJSON(needs.get-labels.outputs.labels), format('deploy:{0}', matrix.label-identifier)) }}'
      - id: filter
        env:
          MATRIX_JSON: ${{ toJSON(matrix) }}
        if: ${{ contains(fromJSON(needs.get-labels.outputs.labels), format('deploy:{0}', matrix.label-identifier)) }}
        run: |
          MATRIX_JSON=${MATRIX_JSON//$'\n'/}
          echo "${{ matrix.label-identifier }}=$MATRIX_JSON" >> $GITHUB_OUTPUT


  # Process the output of the filter step to create a valid matrix for the deploy step
  process-matrix:
    needs: [ filter-matrix ]
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.process.outputs.matrix }}
    steps:
      - id: process
        env:
          MATRIX_JSON: ${{ toJSON(needs.filter-matrix.outputs.*) }}
        run: |
          MATRIX_JSON=${MATRIX_JSON//$'\n'/}
          MATRIX_JSON=${MATRIX_JSON//$'"{'/'{'}
          MATRIX_JSON=${MATRIX_JSON//$'}"'/'}'}
          MATRIX_JSON=${MATRIX_JSON//$'\\"'/'"'}
          echo "$MATRIX_JSON"
          echo "matrix=$MATRIX_JSON" >> $GITHUB_OUTPUT


  # Deploy to the test servers
  deploy:
    needs: [ process-matrix ]
    runs-on: ubuntu-latest
    concurrency: test-servers-deploy
    strategy:
      fail-fast: false
      matrix:
        include: ${{ fromJSON(needs.process-matrix.outputs.matrix) }}

    environment:
      name: ${{ matrix.environment }}
      url: ${{ matrix.url }}

    env:
      DEPLOYMENT_USER: ${{ matrix.user }}
      DEPLOYMENT_HOSTS: ${{ matrix.hosts }}
      DEPLOYMENT_FOLDER: ${{ matrix.folder }}
      GATEWAY_USER: "jump"
      GATEWAY_HOST: "gateway.artemis.in.tum.de:2010"
      GATEWAY_HOST_PUBLIC_KEY: "[gateway.artemis.in.tum.de]:2010 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKtTLiKRILjKZ+Qg4ReWKsG7mLDXkzHfeY5nalSQUNQ4"

    steps:
      - uses: actions-ecosystem/action-remove-labels@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: |
            deploy:${{ matrix.label-identifier }}

      - name: Check "lock:${{ matrix.environment }}" label
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const opts = github.rest.issues.listForRepo.endpoint.merge({
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: ['lock:${{ matrix.label-identifier }}']
            })
            const issues = await github.paginate(opts)
            if (issues.length == 1 && (!context.issue || issues[0].number != context.issue.number)) {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: `#### ⚠️ Unable to deploy to test servers ⚠️\nTestserver "${{ matrix.environment }}" is already in use by PR #${issues[0].number}.`
              })
              core.setFailed(`Testserver "${{ matrix.environment }}" is already in use by PR #${issues[0].number}.`);
            } else if (issues.length > 1) {
              github.rest.issues.createComment({
                  issue_number: context.issue.number,
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  body: '#### ⚠️ Unable to deploy to test servers ⚠️\nTestserver "${{ matrix.environment }}" is already in use by multiple PRs. Check PRs with label "lock:${{ matrix.label-identifier }}"!'
                })
              core.setFailed('Testserver "${{ matrix.environment }}" is already in use by multiple PRs. Check PRs with label "lock:${{ matrix.label-identifier }}"!');
            }

      - name: Compute Tag
        uses: actions/github-script@v7
        id: compute-tag
        with:
          result-encoding: string
          script: |
            if (context.eventName === "pull_request") {
              return "pr-" + context.issue.number;
            }
            if (context.eventName === "release") {
              return "latest";
            }
            if (context.eventName === "push") {
              if (context.ref.startsWith("refs/tags/")) {
                return context.ref.slice(10);
              }
              if (context.ref === "refs/heads/develop") {
                return "develop";
              }
            }
            return "FALSE";

      # Download artemis-server-cli from GH without cloning the Repo
      - name: Fetch Artemis CLI
        run: |
          wget ${{ env.RAW_URL }}/artemis-server-cli
          chmod +x artemis-server-cli

      # Configure SSH Key
      - name: Setup SSH Keys and known_hosts
        env:
          SSH_AUTH_SOCK: /tmp/ssh_agent.sock
          GATEWAY_SSH_KEY: "${{ secrets.DEPLOYMENT_GATEWAY_SSH_KEY }}"
          DEPLOYMENT_SSH_KEY: "${{ secrets.DEPLOYMENT_SSH_KEY }}"
        run: |
          mkdir -p ~/.ssh
          ssh-agent -a $SSH_AUTH_SOCK > /dev/null
          ssh-add - <<< $GATEWAY_SSH_KEY
          ssh-add - <<< $DEPLOYMENT_SSH_KEY
          cat - <<< $GATEWAY_HOST_PUBLIC_KEY >> ~/.ssh/known_hosts

      - name: Deploy Artemis with Docker
        env:
          SSH_AUTH_SOCK: /tmp/ssh_agent.sock
          TAG: ${{ steps.compute-tag.outputs.result }}
        run: |
          for host in $DEPLOYMENT_HOSTS; do
            ./artemis-server-cli docker-deploy "$DEPLOYMENT_USER@$host" -g "$GATEWAY_USER@$GATEWAY_HOST" -t $TAG -b $GITHUB_HEAD_REF -d $DEPLOYMENT_FOLDER -y
          done

      - name: Add "lock:${{ matrix.environment }}" label
        uses: actions/github-script@v7
        with:
            github-token: ${{ secrets.GITHUB_TOKEN }}
            script: |
                if (context.issue && context.issue.number) {
                  await github.rest.issues.addLabels({
                    issue_number: context.issue.number,
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    labels: ['lock:${{ matrix.label-identifier }}']
                  })
                }

      - name: Update badge
        uses: RubbaBoy/BYOB@v1.3.0
        with:
            NAME: ${{ matrix.label-identifier }}
            LABEL: ${{ matrix.environment }}
            STATUS: ${{ github.event.pull_request.head.ref }}
            COLOR: red
            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  # Check that the build job has run successfully before deploying
  add-error-label:
    needs: [ get-labels, check-build-status, filter-matrix, process-matrix, deploy ]
    runs-on: ubuntu-latest
    if: ${{ failure() }}
    steps:
      - name: Add error label
        uses: actions-ecosystem/action-add-labels@v1
        with:
          labels: deployment-error