name: CI
'on':
  push:
    branches: [master]
  pull_request:

permissions:
  contents: read
  pull-requests: write

jobs:
  label:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/labeler@v5

  clang-format:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: actions/setup-python@v6
        with:
          python-version: '3.14'

      - name: Install clang-format-21
        run: |
          wget https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh 21
          sudo apt-get update
          sudo apt-get install -y clang-format-21

      - name: Run clang-format
        run: PATH="/usr/lib/llvm-21/bin:$PATH" ./bin/clang-format-fix && git diff --exit-code || (echo "Please run 'bin/clang-format-fix' to fix formatting issues" && exit 1)

  cppcheck:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: actions/setup-python@v6
        with:
          python-version: '3.14'

      - name: Install PlatformIO Core
        run: pip install --upgrade platformio

      - name: Run cppcheck
        run: pio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high

  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: actions/setup-python@v6
        with:
          python-version: '3.14'

      - name: Install PlatformIO Core
        run: pip install --upgrade platformio

      - name: Build CrossPoint
        run: |
          set -euo pipefail
          pio run | tee pio.log

      - name: Extract firmware stats
        id: fw_stats
        run: |
          set -euo pipefail
          ram_line="$(grep -E "RAM:\\s" -m1 pio.log || true)"
          flash_line="$(grep -E "Flash:\\s" -m1 pio.log || true)"
          echo "ram_line=${ram_line}" >> "$GITHUB_OUTPUT"
          echo "flash_line=${flash_line}" >> "$GITHUB_OUTPUT"
          {
            echo "## Firmware build stats"
            if [ -n "$ram_line" ]; then echo "- ${ram_line}"; else echo "- RAM: not found"; fi
            if [ -n "$flash_line" ]; then echo "- ${flash_line}"; else echo "- Flash: not found"; fi
          } >> "$GITHUB_STEP_SUMMARY"

      - name: Upload firmware.bin artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ github.event_name == 'pull_request' && format('firmware-bin-pr-{0}-{1}', github.event.pull_request.number, github.sha) || format('firmware-bin-{0}', github.sha) }}
          path: .pio/build/default/firmware.bin
          if-no-files-found: error

      - name: Comment PR with firmware stats and firmware.bin
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v7
        with:
          script: |
            const marker = '<!-- firmware-stats -->';
            const ram = `${{ steps.fw_stats.outputs.ram_line }}`.trim();
            const flash = `${{ steps.fw_stats.outputs.flash_line }}`.trim();
            const prNumber = context.payload.pull_request?.number;
            const artifactName = prNumber
              ? `firmware-bin-pr-${prNumber}-${context.sha}`
              : `firmware-bin-${context.sha}`;
            let firmwareLine = 'Firmware: artifact not found';
            try {
              const { data: artifacts } = await github.rest.actions.listWorkflowRunArtifacts({
                owner: context.repo.owner,
                repo: context.repo.repo,
                run_id: context.runId,
              });
              const firmwareArtifact = artifacts.artifacts.find((artifact) => artifact.name === artifactName);
              if (firmwareArtifact) {
                const artifactUiUrl = `https://github.com/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}/artifacts/${firmwareArtifact.id}`;
                firmwareLine = `Firmware: [firmware.bin artifact](${artifactUiUrl})`;
              } else {
                firmwareLine = `Firmware: artifact not found (${artifactName})`;
              }
            } catch (error) {
              firmwareLine = `Firmware: artifact lookup failed (${error.message})`;
            }
            const body = `${marker}\n**Firmware build stats**\n\n\`\`\`\n${ram || 'RAM: not found'}\n${flash || 'Flash: not found'}\n\`\`\`\n\n**Firmware binary**\n${firmwareLine}`;
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            const existing = comments.find((comment) => comment.body && comment.body.includes(marker));
            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body,
              });
            }