Add unused import detection workflow #4
Workflow file for this run
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| name: CI / Unused Imports Check | |
| on: | |
| pull_request: | |
| branches: [main] | |
| workflow_dispatch: | |
| jobs: | |
| check-unused-imports: | |
| runs-on: ubuntu-latest | |
| permissions: | |
| contents: read | |
| pull-requests: write | |
| steps: | |
| - name: Checkout PR code | |
| uses: actions/checkout@v3 | |
| with: | |
| fetch-depth: 0 | |
| - name: Setup Zig | |
| uses: mlugg/setup-zig@v2 | |
| with: | |
| version: 0.15.1 | |
| - name: Build zigimports | |
| run: | | |
| git clone --depth 1 https://github.com/tusharsadhwani/zigimports.git /tmp/zigimports | |
| cd /tmp/zigimports | |
| zig build --release=safe | |
| # Binary is named zigimports-<arch>-<os>, find and symlink it | |
| ln -s /tmp/zigimports/zig-out/bin/zigimports-* /tmp/zigimports/zig-out/bin/zigimports | |
| - name: Get changed Zig files | |
| id: changed-files | |
| run: | | |
| FILES=$(git diff --name-only --diff-filter=d ${{ github.event.pull_request.base.sha }} ${{ github.event.pull_request.head.sha }} | grep '\.zig$' || true) | |
| echo "files<<EOF" >> $GITHUB_OUTPUT | |
| echo "$FILES" >> $GITHUB_OUTPUT | |
| echo "EOF" >> $GITHUB_OUTPUT | |
| - name: Check for unused imports | |
| id: check | |
| run: | | |
| RESULTS="" | |
| echo "${{ steps.changed-files.outputs.files }}" | while read file; do | |
| if [ -n "$file" ] && [ -f "$file" ]; then | |
| /tmp/zigimports/zig-out/bin/zigimports "$file" 2>&1 || true | |
| fi | |
| done | tee unused_imports.txt | |
| # Set output for later steps | |
| if grep -q "is unused" unused_imports.txt 2>/dev/null; then | |
| echo "has_issues=true" >> $GITHUB_OUTPUT | |
| else | |
| echo "has_issues=false" >> $GITHUB_OUTPUT | |
| fi | |
| - name: Post PR comment | |
| if: steps.check.outputs.has_issues == 'true' | |
| uses: actions/github-script@v7 | |
| with: | |
| script: | | |
| const fs = require('fs'); | |
| const content = fs.readFileSync('unused_imports.txt', 'utf8').trim(); | |
| const lines = content.split('\n').filter(l => l.includes('is unused')); | |
| if (lines.length === 0) return; | |
| // Check for existing comment and update it | |
| const marker = '<!-- unused-imports-check -->'; | |
| const comments = await github.paginate( | |
| github.rest.issues.listComments, | |
| { | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| issue_number: context.issue.number | |
| } | |
| ); | |
| const existing = comments.find(c => | |
| c.user.login === 'github-actions[bot]' && | |
| c.body.includes(marker) | |
| ); | |
| let body = '## ⚠️ Unused Imports Found\n\n'; | |
| body += '```\n' + lines.join('\n') + '\n```\n\n'; | |
| body += 'Run `zigimports --fix <file>` locally to automatically remove unused imports.\n\n'; | |
| body += marker; | |
| if (existing) { | |
| await github.rest.issues.updateComment({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| comment_id: existing.id, | |
| body: body | |
| }); | |
| } else { | |
| await github.rest.issues.createComment({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| issue_number: context.issue.number, | |
| body: body | |
| }); | |
| } | |
| - name: Remove comment if no issues | |
| if: steps.check.outputs.has_issues == 'false' | |
| uses: actions/github-script@v7 | |
| with: | |
| script: | | |
| const marker = '<!-- unused-imports-check -->'; | |
| const comments = await github.paginate( | |
| github.rest.issues.listComments, | |
| { | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| issue_number: context.issue.number | |
| } | |
| ); | |
| const existing = comments.find(c => | |
| c.user.login === 'github-actions[bot]' && | |
| c.body.includes(marker) | |
| ); | |
| if (existing) { | |
| await github.rest.issues.deleteComment({ | |
| owner: context.repo.owner, | |
| repo: context.repo.repo, | |
| comment_id: existing.id | |
| }); | |
| } |