cmd.yml

name: Command

on:
  issue_comment: # listen for comments on issues
    types: [created]

permissions: # allow the action to comment on the PR
  contents: read
  issues: write
  pull-requests: write
  actions: read

jobs:
  is-org-member:
    if: startsWith(github.event.comment.body, '/cmd')
    runs-on: ubuntu-latest
    outputs:
      member: ${{ steps.is-member.outputs.result }}
    steps:
      - name: Generate token
        id: generate_token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.CMD_BOT_APP_ID }}
          private-key: ${{ secrets.CMD_BOT_APP_KEY }}

      - name: Check if user is a member of the organization
        id: is-member
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.generate_token.outputs.token }}
          result-encoding: string
          script: |
            const fs = require("fs");
            try {              
              const org = '${{ github.event.repository.owner.login }}';
              const username = '${{ github.event.comment.user.login }}';

              const membership = await github.rest.orgs.checkMembershipForUser({
                  org: org,
                  username: username
              });

              console.log(membership, membership.status, membership.status === 204);

              if (membership.status === 204) {
                return 'true';
              } else {
                console.log(membership);
                fs.appendFileSync(process.env["GITHUB_STEP_SUMMARY"], `${membership.data && membership.data.message || 'Unknown error happened, please check logs'}`);
              }
            } catch (error) {
              console.log(error)
            }

            return 'false';


  acknowledge:
    if: ${{ startsWith(github.event.comment.body, '/cmd') }}
    runs-on: ubuntu-latest
    steps:
      - name: Add reaction to triggered comment
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.reactions.createForIssueComment({
              comment_id: ${{ github.event.comment.id }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              content: 'eyes'
            })

  clean:
    runs-on: ubuntu-latest
    steps:
      - name: Clean previous comments
        uses: actions/github-script@v7
        if: ${{ startsWith(github.event.comment.body, '/cmd') && contains(github.event.comment.body, '--clean') }}
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.issues.listComments({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo
            }).then(comments => {
              for (let comment of comments.data) {
                console.log(comment)
                if (
                  ${{ github.event.comment.id }} !== comment.id &&
                    (
                      (
                        (
                          comment.body.startsWith('Command') || 
                          comment.body.startsWith('<details><summary>Command') || 
                          comment.body.startsWith('Sorry, only ')
                        ) && comment.user.type === 'Bot'
                      ) ||
                      (comment.body.startsWith('/cmd') && comment.user.login === context.actor)
                    )
                ) {
                  github.rest.issues.deleteComment({
                    comment_id: comment.id,
                    owner: context.repo.owner,
                    repo: context.repo.repo
                  })
                }
              }
            })

  get-pr-info:
    if: ${{ startsWith(github.event.comment.body, '/cmd') }}
    runs-on: ubuntu-latest
    outputs:
      CMD: ${{ steps.get-comment.outputs.group2 }}
      pr-branch: ${{ steps.get-pr.outputs.pr_branch }}
      repo: ${{ steps.get-pr.outputs.repo }}
    steps:
      - name: Get command
        uses: actions-ecosystem/action-regex-match@v2
        id: get-comment
        with:
          text: ${{ github.event.comment.body }}
          regex: "^(\\/cmd )([-\\/\\s\\w.=:]+)$" # see explanation in docs/contributor/commands-readme.md#examples
      
      # Get PR branch name, because the issue_comment event does not contain the PR branch name
      - name: Check if the issue is a PR
        id: check-pr
        run: |
          if [ -n "${{ github.event.issue.pull_request.url }}" ]; then
            echo "This is a pull request comment"
          else
            echo "This is not a pull request comment"
            exit 1
          fi

      - name: Get PR Branch Name and Repo
        if: steps.check-pr.outcome == 'success'
        id: get-pr
        uses: actions/github-script@v7
        with:
          script: |
            const pr = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
            });
            const prBranch = pr.data.head.ref;
            const repo = pr.data.head.repo.full_name;
            console.log(prBranch, repo)
            core.setOutput('pr_branch', prBranch);
            core.setOutput('repo', repo);

      - name: Use PR Branch Name and Repo
        env:
          PR_BRANCH: ${{ steps.get-pr.outputs.pr_branch }}
          REPO: ${{ steps.get-pr.outputs.repo }}
          CMD: ${{ steps.get-comment.outputs.group2 }}
        run: |
          echo "The PR branch is $PR_BRANCH"
          echo "The repository is $REPO"
          echo "The CMD is $CMD"

  help:
    needs: [clean, get-pr-info]
    if: ${{ startsWith(github.event.comment.body, '/cmd') && contains(github.event.comment.body, '--help') }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Save output of help
        id: help
        env:
          CMD: ${{ needs.get-pr-info.outputs.CMD }} # to avoid "" around the command
        run: |
          python3 -m pip install -r .github/scripts/generate-prdoc.requirements.txt
          echo 'help<<EOF' >> $GITHUB_OUTPUT
          python3 .github/scripts/cmd/cmd.py $CMD >> $GITHUB_OUTPUT
          echo 'EOF' >> $GITHUB_OUTPUT

      - name: Comment PR (Help)
        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: `<details><summary>Command help:</summary> 

            \`\`\`
            ${{ steps.help.outputs.help }}
            \`\`\` 

            </details>`
            })

      - name: Add confused reaction on failure
        uses: actions/github-script@v7
        if: ${{ failure() }}
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.reactions.createForIssueComment({
              comment_id: ${{ github.event.comment.id }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              content: 'confused'
            })

      - name: Add 👍 reaction on success
        uses: actions/github-script@v7
        if: ${{ !failure() }}
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.reactions.createForIssueComment({
              comment_id: ${{ github.event.comment.id }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              content: '+1'
            })

  set-image:
    needs: [clean, get-pr-info]
    if: ${{ startsWith(github.event.comment.body, '/cmd') && !contains(github.event.comment.body, '--help') }}
    runs-on: ubuntu-latest
    env: 
      CMD: ${{ needs.get-pr-info.outputs.CMD }}
    outputs:
      IMAGE: ${{ steps.set-image.outputs.IMAGE }}
      RUNNER: ${{ steps.set-image.outputs.RUNNER }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - id: set-image
        run: |
          BODY=$(echo "$CMD" | xargs) # remove whitespace
          IMAGE_OVERRIDE=$(echo $BODY | grep -oe 'docker.io/paritytech/ci-unified:.*\s' | xargs)

          cat .github/env >> $GITHUB_OUTPUT

          if [ -n "$IMAGE_OVERRIDE" ]; then
              IMAGE=$IMAGE_OVERRIDE
              echo "IMAGE=$IMAGE" >> $GITHUB_OUTPUT
          fi

          if [[ $BODY == "bench"* ]]; then
              echo "RUNNER=parity-weights" >> $GITHUB_OUTPUT
          elif [[ $BODY == "update-ui"* ]]; then
              echo "RUNNER=parity-large" >> $GITHUB_OUTPUT
          else
              echo "RUNNER=ubuntu-latest" >> $GITHUB_OUTPUT
          fi
      - name: Print outputs
        run: |
          echo "RUNNER=${{ steps.set-image.outputs.RUNNER }}"
          echo "IMAGE=${{ steps.set-image.outputs.IMAGE }}"

  before-cmd:
    needs: [set-image, get-pr-info]
    runs-on: ubuntu-latest
    env:
      JOB_NAME: "cmd"
      CMD: ${{ needs.get-pr-info.outputs.CMD }}
      PR_BRANCH: ${{ needs.get-pr-info.outputs.pr-branch }}
    outputs:
      job_url: ${{ steps.build-link.outputs.job_url }}
      run_url: ${{ steps.build-link.outputs.run_url }}
    steps:
      - name: Build workflow link
        if: ${{ !contains(github.event.comment.body, '--quiet') }}
        id: build-link
        run: |
          # Get exactly the CMD job link, filtering out the other jobs
          jobLink=$(curl -s \
            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
            -H "Accept: application/vnd.github.v3+json" \
            https://api.github.com/repos/${{ github.repository }}/actions/runs/${{ github.run_id }}/jobs | jq '.jobs[] | select(.name | contains("${{ env.JOB_NAME }}")) | .html_url')

          runLink=$(curl -s \
            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
            -H "Accept: application/vnd.github.v3+json" \
            https://api.github.com/repos/${{ github.repository }}/actions/runs/${{ github.run_id }} | jq '.html_url')

          echo "job_url=${jobLink}"
          echo "run_url=${runLink}"
          echo "job_url=$jobLink" >> $GITHUB_OUTPUT
          echo "run_url=$runLink" >> $GITHUB_OUTPUT

      - name: Comment PR (Start)
        # No need to comment on prdoc start or if --quiet
        if: ${{ !contains(github.event.comment.body, '--quiet') && !startsWith(needs.get-pr-info.outputs.CMD, 'prdoc') && !startsWith(needs.get-pr-info.outputs.CMD, 'fmt')}}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let job_url = ${{ steps.build-link.outputs.job_url }}
            let cmd = process.env.CMD;
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Command "${cmd}" has started 🚀 [See logs here](${job_url})`
            })

  cmd:
    needs: [before-cmd, set-image, get-pr-info, is-org-member]
    env:
      CMD: ${{ needs.get-pr-info.outputs.CMD }}
      PR_BRANCH: ${{ needs.get-pr-info.outputs.pr-branch }}
    runs-on: ${{ needs.set-image.outputs.RUNNER }}
    container:
      image: ${{ needs.set-image.outputs.IMAGE }}
    timeout-minutes: 1440 # 24 hours per runtime
    # lowerdown permissions to separate permissions context for executable parts by contributors
    permissions:
      contents: read
      pull-requests: none
      actions: none
      issues: none
    outputs:
      cmd_output: ${{ steps.cmd.outputs.cmd_output }}
      subweight: ${{ steps.subweight.outputs.result }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: ${{ needs.get-pr-info.outputs.repo }}
          ref: ${{ needs.get-pr-info.outputs.pr-branch }}

      # In order to run prdoc without specifying the PR number, we need to add the PR number as an argument automatically
      - name: Prepare PR Number argument
        id: pr-arg
        run: |
          CMD="${{ needs.get-pr-info.outputs.CMD }}"
          if echo "$CMD" | grep -q "prdoc" && ! echo "$CMD" | grep -qE "\-\-pr[[:space:]=][0-9]+"; then
            echo "arg=--pr ${{ github.event.issue.number }}" >> $GITHUB_OUTPUT
          else
            echo "arg=" >> $GITHUB_OUTPUT
          fi

      - name: Run cmd
        id: cmd
        env:
          PR_ARG: ${{ steps.pr-arg.outputs.arg }}
          IS_ORG_MEMBER: ${{ needs.is-org-member.outputs.member }}
        run: |
          echo "Running command: '$CMD $PR_ARG' on '${{ needs.set-image.outputs.RUNNER }}' runner, container: '${{ needs.set-image.outputs.IMAGE }}'"
          echo "RUST_NIGHTLY_VERSION: $RUST_NIGHTLY_VERSION"
          echo "IS_ORG_MEMBER: $IS_ORG_MEMBER"

          git config --global --add safe.directory $GITHUB_WORKSPACE
          git config user.name "cmd[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
            
          
          # if the user is not an org member, we need to use the bot's path from master to avoid unwanted modifications
          if [ "$IS_ORG_MEMBER" = "true" ]; then
            # safe to run commands from current branch
            BOT_PATH=.github
          else
            # going to run commands from master
            TMP_DIR=/tmp/polkadot-sdk
            git clone --depth 1 --branch master https://github.com/paritytech/polkadot-sdk $TMP_DIR
            BOT_PATH=$TMP_DIR/.github
          fi

          # install deps and run a command from master
          python3 -m pip install -r $BOT_PATH/scripts/generate-prdoc.requirements.txt
          python3 $BOT_PATH/scripts/cmd/cmd.py $CMD $PR_ARG
          git status
          git diff

          if [ -f /tmp/cmd/command_output.log ]; then
            CMD_OUTPUT=$(cat /tmp/cmd/command_output.log)
            # export to summary to display in the PR
            echo "$CMD_OUTPUT" >> $GITHUB_STEP_SUMMARY
            # should be multiline, otherwise it captures the first line only
            echo 'cmd_output<<EOF' >> $GITHUB_OUTPUT
            echo "$CMD_OUTPUT" >> $GITHUB_OUTPUT
            echo 'EOF' >> $GITHUB_OUTPUT
          fi

          git add -A
          git diff HEAD > /tmp/cmd/command_diff.patch -U0
          git commit -m "tmp cmd: $CMD" || true
          # without push, as we're saving the diff to an artifact and subweight will compare the local branch with the remote branch

      - name: Upload command output
        if: ${{ always() }}
        uses: actions/upload-artifact@v4
        with:
          name: command-output
          path: /tmp/cmd/command_output.log

      - name: Upload command diff
        uses: actions/upload-artifact@v4
        with:
          name: command-diff
          path: /tmp/cmd/command_diff.patch

      - name: Install subweight for bench
        if: startsWith(needs.get-pr-info.outputs.CMD, 'bench')
        run: cargo install subweight

      - name: Run Subweight for bench
        id: subweight
        if: startsWith(needs.get-pr-info.outputs.CMD, 'bench')
        shell: bash
        run: |
          git fetch
          git remote -v
          echo $(git log -n 2 --oneline)

          result=$(subweight compare commits \
            --path-pattern "./**/weights/**/*.rs,./**/weights.rs" \
            --method asymptotic \
            --format markdown \
            --no-color \
            --change added changed \
            --ignore-errors \
            refs/remotes/origin/master $PR_BRANCH)

          # Save the multiline result to the output
          {
            echo "result<<EOF"
            echo "$result"
            echo "EOF"
          } >> $GITHUB_OUTPUT

  after-cmd:
    needs: [cmd, get-pr-info, before-cmd]
    env:
      CMD: ${{ needs.get-pr-info.outputs.CMD }}
      PR_BRANCH: ${{ needs.get-pr-info.outputs.pr-branch }}
    runs-on: ubuntu-latest
    steps:
      # needs to be able to trigger CI, as default token does not retrigger
      - uses: actions/create-github-app-token@v1
        id: generate_token
        with:
          app-id: ${{ secrets.CMD_BOT_APP_ID }}
          private-key: ${{ secrets.CMD_BOT_APP_KEY }}

      - name: Checkout
        uses: actions/checkout@v4
        with:
          token: ${{ steps.generate_token.outputs.token }}
          repository: ${{ needs.get-pr-info.outputs.repo }}
          ref: ${{ needs.get-pr-info.outputs.pr-branch }}

      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with: 
          name: command-diff
          path: command-diff

      - name: Apply & Commit changes
        run: |
          ls -lsa .

          git config --global --add safe.directory $GITHUB_WORKSPACE
          git config user.name "cmd[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --global pull.rebase false
          
          echo "Applying $file"
          git apply "command-diff/command_diff.patch" --unidiff-zero --allow-empty

          rm -rf command-diff

          git status
          
          if [ -n "$(git status --porcelain)" ]; then

            git remote -v

            push_changes() {
              git push origin "HEAD:$PR_BRANCH"
            }

            git add .
            git restore --staged Cargo.lock # ignore changes in Cargo.lock
            git commit -m "Update from ${{ github.actor }} running command '$CMD'" || true
            
            # Attempt to push changes
            if ! push_changes; then
              echo "Push failed, trying to rebase..."
              git pull --rebase origin $PR_BRANCH
              # After successful rebase, try pushing again
              push_changes
            fi
          else
            echo "Nothing to commit";
          fi

      - name: Comment PR (End)
        # No need to comment on prdoc success or --quiet
        if: ${{ needs.cmd.result == 'success' && !contains(github.event.comment.body, '--quiet') && !startsWith(needs.get-pr-info.outputs.CMD, 'prdoc') && !startsWith(needs.get-pr-info.outputs.CMD, 'fmt') }}
        uses: actions/github-script@v7
        env:
          SUBWEIGHT: "${{ needs.cmd.outputs.subweight }}"
          CMD_OUTPUT: "${{ needs.cmd.outputs.cmd_output }}"
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let runUrl = ${{ needs.before-cmd.outputs.run_url }}
            let subweight = process.env.SUBWEIGHT || '';
            let cmdOutput = process.env.CMD_OUTPUT || '';
            let cmd = process.env.CMD;
            console.log(cmdOutput);

            let subweightCollapsed = subweight.trim() !== '' 
              ? `<details>\n\n<summary>Subweight results:</summary>\n\n${subweight}\n\n</details>` 
              : '';

            let cmdOutputCollapsed = cmdOutput.trim() !== ''
              ? `<details>\n\n<summary>Command output:</summary>\n\n${cmdOutput}\n\n</details>` 
              : '';

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Command "${cmd}" has finished ✅ [See logs here](${runUrl})${subweightCollapsed}${cmdOutputCollapsed}`
            })

  finish:
    needs: [get-pr-info, before-cmd, after-cmd, cmd]
    if: ${{ always() }}
    runs-on: ubuntu-latest
    env:
      CMD_OUTPUT: "${{ needs.cmd.outputs.cmd_output }}"
      CMD: ${{ needs.get-pr-info.outputs.CMD }}
    steps:
      - name: Comment PR (Failure)
        if: ${{ needs.cmd.result == 'failure' || needs.after-cmd.result == 'failure' }}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let jobUrl = ${{ needs.before-cmd.outputs.job_url }}
            let cmdOutput = process.env.CMD_OUTPUT;
            let cmd = process.env.CMD;
            let cmdOutputCollapsed = '';
            if (cmdOutput && cmdOutput.trim() !== '') {
              cmdOutputCollapsed = `<details>\n\n<summary>Command output:</summary>\n\n${cmdOutput}\n\n</details>` 
            }

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Command "${cmd}" has failed ❌! [See logs here](${jobUrl})${cmdOutputCollapsed}`
            })

      - name: Add 😕 reaction on failure
        if: ${{ needs.cmd.result == 'failure' || needs.after-cmd.result == 'failure' }}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.reactions.createForIssueComment({
              comment_id: ${{ github.event.comment.id }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              content: 'confused'
            })

      - name: Add 👍 reaction on success
        if: ${{ needs.cmd.result == 'success' && needs.after-cmd.result == 'success' }}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.rest.reactions.createForIssueComment({
              comment_id: ${{ github.event.comment.id }},
              owner: context.repo.owner,
              repo: context.repo.repo,
              content: '+1'
            })