bot.yml

name: DevHub Bot

on:
  workflow_call:
    inputs:
      thank_you_message:
        required: false
        default: "Thank you for opening this PR! Repo maintainers will review it ASAP 🚀"
        type: string

      merge_thank_you_message:
        required: false
        default: "🎉 Thank you for contributing! We really appreciate your work."
        type: string

      cc_warning_message:
        required: false
        default: "⚠️ Please consider using Conventional Commits (e.g. feat:, fix:, docs:).\nhttps://www.conventionalcommits.org/en/v1.0.0/"
        type: string

    secrets:
      DEVHUB_APP_ID:
        required: false
      DEVHUB_APP_PRIVATE_KEY:
        required: false

jobs:
  pr-handler:
    runs-on: ubuntu-latest
    if: github.event.pull_request != null

    steps:
      - name: Checkout base branch
        uses: actions/checkout@v5
        with:
          ref: ${{ github.event.pull_request.base.ref }}
          fetch-depth: 0
          persist-credentials: false

      - name: Generate DevHub Bot token
        if: ${{ secrets.DEVHUB_APP_ID && secrets.DEVHUB_APP_PRIVATE_KEY }}
        id: app-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.DEVHUB_APP_ID }}
          private-key: ${{ secrets.DEVHUB_APP_PRIVATE_KEY }}

      - name: Fetch PR commits
        id: commits
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.app-token.outputs.token || github.token }}
          script: |
            const commits = await github.paginate(
              github.rest.pulls.listCommits,
              {
                owner: context.repo.owner,
                repo: context.repo.repo,
                pull_number: context.payload.pull_request.number
              }
            );
            core.setOutput("messages", JSON.stringify(commits.map(c => c.commit.message)));

      - name: Check CC compliance
        id: analyze
        run: |
          echo '${{ steps.commits.outputs.messages }}' > commits.json

          NON_CC=false
          regex='^(feat|fix|docs|style|refactor|perf|test|chore)(\(.+\))?:\ .+'

          while read -r msg; do
            if [[ ! "$msg" =~ $regex ]]; then
              NON_CC=true
              break
            fi
          done < <(jq -r '.[]' commits.json)

          echo "non_cc=$NON_CC" >> $GITHUB_OUTPUT

      - name: Comment PR
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.app-token.outputs.token || github.token }}
          script: |
            const nonCC = "${{ steps.analyze.outputs.non_cc }}" === "true";
            const body = nonCC
              ? `${{ inputs.cc_warning_message }}`
              : `${{ inputs.thank_you_message }}`;

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.payload.pull_request.number,
              body
            });

  pr-merged:
    runs-on: ubuntu-latest
    if: github.event.pull_request != null && github.event.pull_request.merged == true
    steps:
      - uses: actions/checkout@v5
        with:
          ref: ${{ github.event.pull_request.base.ref }}

      - name: Generate DevHub Bot token
        if: ${{ secrets.DEVHUB_APP_ID && secrets.DEVHUB_APP_PRIVATE_KEY }}
        id: app-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.DEVHUB_APP_ID }}
          private-key: ${{ secrets.DEVHUB_APP_PRIVATE_KEY }}

      - name: Thank contributor
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.app-token.outputs.token || github.token }}
          script: |
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.payload.pull_request.number,
              body: `${{ inputs.merge_thank_you_message }}`
            });

  issue-opened:
    runs-on: ubuntu-latest
    if: github.event_name == 'issues' && github.event.action == 'opened'
    steps:
      - name: Generate DevHub Bot token
        if: ${{ secrets.DEVHUB_APP_ID && secrets.DEVHUB_APP_PRIVATE_KEY }}
        id: app-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.DEVHUB_APP_ID }}
          private-key: ${{ secrets.DEVHUB_APP_PRIVATE_KEY }}

      - name: Handle issue open (labels + comment)
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.app-token.outputs.token || github.token }}
          script: |
            const issue = context.payload.issue;
            const text = `${issue.title}\n${issue.body ?? ""}`.toLowerCase();

            const rules = [
              { label: "bug", keywords: ["bug", "error", "crash", "fail", "issue"] },
              { label: "enhancement", keywords: ["feature", "request", "enhance"] },
              { label: "documentation", keywords: ["docs", "readme", "documentation"] },
              { label: "question", keywords: ["question", "help"] },
            ];

            const labels = rules
              .filter(r => r.label && r.keywords.some(k => text.includes(k)))
              .map(r => r.label)
              .filter(l => typeof l === "string" && l.trim().length > 0);

            if (labels.length > 0) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issue.number,
                labels,
              });
            }

            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue.number,
              body: [
                "👋 **Thanks for opening this issue!**",
                "",
                "Our maintainers have been notified and will review it as soon as possible 🚀",
                "",
                "📌 **To help us resolve this faster:**",
                "- Include clear steps to reproduce (for bugs)",
                "- Mention expected vs actual behavior",
                "- Add screenshots or logs if relevant",
                "",
                "Thanks for contributing to **Open DevHub** 💙",
              ].join("\n"),
            });