cmd.yml

name: Command

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

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

jobs:
  fellows:
    runs-on: ubuntu-latest
    outputs:
      github-handles: ${{ steps.load-fellows.outputs.github-handles }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Load fellows
        id: load-fellows
        uses: paritytech/get-fellows-action@v1.2.0

  reject-non-fellows:
    needs: fellows
    if: ${{ startsWith(github.event.comment.body, '/cmd') && !contains(needs.fellows.outputs.github-handles, github.event.sender.login) }}
    runs-on: ubuntu-latest
    steps:
      - name: Add reaction to rejected 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: 'confused'
            })

      - name: Comment PR (Rejected)
        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: `Sorry, only fellows can run commands.`
            })

  acknowledge:
    needs: fellows
    if: ${{ startsWith(github.event.comment.body, '/cmd') && contains(needs.fellows.outputs.github-handles, github.event.sender.login) }}
    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:
    needs: fellows
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Clean previous comments
        if: ${{ startsWith(github.event.comment.body, '/cmd') && contains(github.event.comment.body, '--clean') && contains(needs.fellows.outputs.github-handles, github.event.sender.login) }}
        uses: actions/github-script@v7
        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.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
                  })
                }
              }
            })
  help:
    needs: [clean, fellows]
    if: ${{ startsWith(github.event.comment.body, '/cmd') && contains(github.event.comment.body, '--help') && contains(needs.fellows.outputs.github-handles, github.event.sender.login) }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Get command
        uses: actions-ecosystem/action-regex-match@v2
        id: get-pr-comment
        with:
          text: ${{ github.event.comment.body }}
          regex: '^(\/cmd )([\s\w-]+)$'

      - name: Save output of help
        id: help
        env:
          CMD: ${{ steps.get-pr-comment.outputs.group2 }} # to avoid "" around the command
        run: |
          echo 'help<<EOF' >> $GITHUB_OUTPUT
          sudo apt install python3
          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'
            })
  
  # Get PR branch name, because the issue_comment event does not contain the PR branch name
  get-pr-branch:
    needs: [clean, fellows]
    runs-on: ubuntu-latest
    outputs:
      pr-branch: ${{ steps.get-pr.outputs.pr_branch }}
      repo: ${{ steps.get-pr.outputs.repo }}
    steps:
      - name: Check if the issue is a PR
        id: check-pr
        run: |
          if [ -n "${{ 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;
            core.setOutput('pr_branch', prBranch);
            core.setOutput('repo', repo);

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


  cmd:
    needs: [get-pr-branch, fellows]
    env:
      JOB_NAME: 'cmd'
    if: ${{ startsWith(github.event.comment.body, '/cmd') && !contains(github.event.comment.body, '--help') && contains(needs.fellows.outputs.github-handles, github.event.sender.login) }}
    runs-on: ${{ startsWith(github.event.comment.body, '/cmd bench') && 'self-hosted' || 'ubuntu-22.04' }}
    steps:
      - name: Get command
        uses: actions-ecosystem/action-regex-match@v2
        id: get-pr-comment
        with:
          text: ${{ github.event.comment.body }}
          regex: '^(\/cmd )([\s\w-]+)$'

      - 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)
        if:  ${{ !contains(github.event.comment.body, '--quiet') }}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let job_url = ${{ steps.build-link.outputs.job_url }}
            
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Command "${{ steps.get-pr-comment.outputs.group2 }}" has started 🚀 [See logs here](${job_url})`
            })

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

      - name: Install updates and dependencies
        if: startsWith(github.event.comment.body, '/cmd bench')
        run: .github/install-deps.sh

      - name: Set rust version via common env file
        run: cat .github/env >> $GITHUB_ENV

      - name: Install nightly toolchain
        uses: dtolnay/rust-toolchain@master
        if: startsWith(steps.get-pr-comment.outputs.group2, 'fmt') || startsWith(steps.get-pr-comment.outputs.group2, 'bench')
        with:
          targets: "wasm32-unknown-unknown"
          components: "rust-src, rustfmt"
          toolchain: "nightly-${{env.RUST_NIGHTLY_VERSION}}"

      - name: Install dependencies for bench
        if: startsWith(steps.get-pr-comment.outputs.group2, 'bench')
        run: cargo install subweight frame-omni-bencher --locked

      - name: Install dependencies for fmt
        if: startsWith(steps.get-pr-comment.outputs.group2, 'fmt')
        run: cargo install taplo-cli --version ${{ env.TAPLO_VERSION }}

      - name: Setup Cache
        if: startsWith(steps.get-pr-comment.outputs.group2, 'bench')
        uses: Swatinem/rust-cache@a95ba195448af2da9b00fb742d14ffaaf3c21f43 # v2.7.0
        with:
          shared-key: "fellowship-cmd"

      - name: Run cmd
        id: cmd
        env:
          CMD: ${{ steps.get-pr-comment.outputs.group2 }} # to avoid "" around the command
        run: |
          echo "github.ref: ${{ github.ref }}"
          echo "Running command: $CMD on branch ${{ needs.get-pr-branch.outputs.pr-branch }}"
          git remote -v
          sudo apt install python3
          python3 .github/scripts/cmd/cmd.py $CMD
          git status
          git diff

      - name: Commit changes
        run: |
          if [ -n "$(git status --porcelain)" ]; then
            git config --local user.email "action@github.com"
            git config --local user.name "GitHub Action"
            
            git pull origin ${{ needs.get-pr-branch.outputs.pr-branch }}
            git add .
            git restore --staged Cargo.lock # ignore changes in Cargo.lock
            git commit -m "Update from ${{ github.actor }} running command '${{ steps.get-pr-comment.outputs.group2 }}'" || true
            git push origin ${{ needs.get-pr-branch.outputs.pr-branch }}
          else
            echo "Nothing to commit";
          fi

      - name: Run Subweight
        id: subweight
        if: startsWith(steps.get-pr-comment.outputs.group2, 'bench')
        shell: bash
        run: |
          git fetch
          result=$(subweight compare commits \
            --path-pattern "./**/weights/**/*.rs" \
            --method asymptotic \
            --format markdown \
            --no-color \
            --change added changed \
            --ignore-errors \
            refs/remotes/origin/main refs/heads/${{ needs.get-pr-branch.outputs.pr-branch }})
          
          # Save the multiline result to the output
          {
            echo "result<<EOF"
            echo "$result"
            echo "EOF"
          } >> $GITHUB_OUTPUT

      - name: Comment PR (End)
        if: ${{ !failure() && !contains(github.event.comment.body, '--quiet') }}
        uses: actions/github-script@v7
        env:
          SUBWEIGHT: '${{ steps.subweight.outputs.result }}'
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let runUrl = ${{ steps.build-link.outputs.run_url }}
            let subweight = process.env.SUBWEIGHT;
            
            let subweightCollapsed = subweight 
              ? `<details>\n\n<summary>Subweight results:</summary>\n\n${subweight}\n\n</details>` 
              : '';
            
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Command "${{ steps.get-pr-comment.outputs.group2 }}" has finished ✅ [See logs here](${runUrl})${subweightCollapsed}`
            })

      - name: Comment PR (Failure)
        if: ${{ failure() && !contains(github.event.comment.body, '--quiet') }}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let jobUrl = ${{ steps.build-link.outputs.job_url }}
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: `Command "${{ steps.get-pr-comment.outputs.group2 }}" has failed ❌! [See logs here](${jobUrl})`
            })

      - name: Add 😕 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'
            })