Decode-Robot-Code/.github/workflows/reopen-once.yml at ba2ec14bc691c014bac4abd4add64acb80d651ab · LOAD-Robotics/Decode-Robot-Code · GitHub

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name: Reopen mistake PR once

on:
  issue_comment:
    types: [created]

permissions:
  issues: write
  pull-requests: write

jobs:
  reopen:
    runs-on: ubuntu-latest
    steps:
      - name: Handle /not-a-mistake
        uses: actions/github-script@v7
        with:
          script: |
            const comment = context.payload.comment;
            const issue = context.payload.issue;

            if (!issue.pull_request) return;
            if (comment.body.trim() !== '/not-a-mistake') return;

            const pr = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: issue.number
            });

            const labels = pr.data.labels.map(l => l.name);

            // Only PR author may use this
            if (comment.user.login !== pr.data.user.login) {
              return;
            }

            // Must be closed and labeled mistake-pr
            if (pr.data.state !== 'closed') return;
            if (!labels.includes('mistake-pr')) return;

            // Auto-reopen already disabled
            if (labels.includes('reopen-used') || labels.includes('reopen-locked')) {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issue.number,
                body:
                  "Automatic reopening is disabled for this PR.\n\n" +
                  "A maintainer may still reopen it manually if needed."
              });
              return;
            }

            // Mark reopen as used FIRST (prevents race)
            await github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue.number,
              labels: ['reopen-used']
            });

            await github.rest.issues.removeLabel({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue.number,
              name: 'mistake-pr'
            });

            await github.rest.pulls.update({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: issue.number,
              state: 'open'
            });

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue.number,
              body:
                "PR reopened.\n\n" +
                "If this PR is closed again, automatic reopening will be disabled."
            });