name: Release

on:
  push:
    tags:
      - "v*"

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - uses: actions/setup-go@v6
        with:
          go-version-file: go.mod

      - uses: goreleaser/goreleaser-action@v6
        with:
          version: "~> v2"
          args: release --clean
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          SENTRY_DSN: ${{ secrets.SENTRY_DSN }}
          # Empty when RELEASE_SIGNING_PUBKEY variable is unset — goreleaser
          # accepts it and the resulting binary disables signature checks
          # (back-compat: pre-signing releases continue to update). Set
          # RELEASE_SIGNING_PUBKEY (variable) + RELEASE_SIGNING_KEY (secret)
          # to turn verification on.
          RELEASE_SIGNING_PUBKEY: ${{ vars.RELEASE_SIGNING_PUBKEY }}

      - name: Sign checksums.txt with ed25519
        # Reference secrets.X directly — step-level env defined in this same
        # step is unreliable to read from this step's own if: expression.
        if: ${{ vars.RELEASE_SIGNING_PUBKEY != '' && secrets.RELEASE_SIGNING_KEY != '' }}
        env:
          RELEASE_SIGNING_KEY: ${{ secrets.RELEASE_SIGNING_KEY }}
          RELEASE_TAG: ${{ github.ref_name }}
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          go run ./scripts/sign-checksums \
            -key "$RELEASE_SIGNING_KEY" \
            -in  dist/checksums.txt \
            -out dist/checksums.txt.sig
          gh release upload "$RELEASE_TAG" dist/checksums.txt.sig --clobber

  docker:
    needs: release
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: torrentclaw/unarr
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=latest

      - uses: docker/setup-qemu-action@v4
      - uses: docker/setup-buildx-action@v4

      - uses: docker/login-action@v4
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - uses: docker/build-push-action@v7
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ github.ref_name }}

      # CVE gate. Fails the release on FIXABLE critical/high only — unfixed
      # upstream ffmpeg codec CVEs are accepted (see SECURITY.md), so the
      # codec noise does not block. Runs post-push (image already published);
      # a failure here flags that a fixable CVE slipped through.
      - name: Scan image for fixable CVEs (gate)
        uses: docker/scout-action@v1
        with:
          command: cves
          image: torrentclaw/unarr:latest
          only-severities: critical,high
          only-fixed: true
          exit-code: true

      # Sync the Docker Hub repo description from DOCKERHUB.md. Non-fatal: a
      # description-API auth hiccup must not undo a successful image push.
      - name: Update Docker Hub description
        uses: peter-evans/dockerhub-description@v4
        continue-on-error: true
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: torrentclaw/unarr
          readme-filepath: ./DOCKERHUB.md
          short-description: "unarr — the single binary that replaces your *arr stack"


  virustotal:
    needs: release
    runs-on: ubuntu-latest
    if: vars.VT_ENABLED == 'true'
    steps:
      - name: Get release tag
        id: tag
        run: echo "tag=${GITHUB_REF#refs/tags/}" >> "$GITHUB_OUTPUT"

      - name: Download release assets
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          mkdir -p assets
          gh release download "${{ steps.tag.outputs.tag }}" \
            --repo "${{ github.repository }}" \
            --dir assets \
            --pattern '*.tar.gz' \
            --pattern '*.zip' \
            --pattern 'checksums.txt'

      - name: Scan assets with VirusTotal
        env:
          VT_API_KEY: ${{ secrets.VT_API_KEY }}
        run: |
          mkdir -p results
          for file in assets/*; do
            filename=$(basename "$file")
            echo "Uploading $filename to VirusTotal..."

            response=$(curl -s --request POST \
              --url https://www.virustotal.com/api/v3/files \
              --header "x-apikey: $VT_API_KEY" \
              --form "file=@$file")

            analysis_id=$(echo "$response" | jq -r '.data.id // empty')
            if [ -z "$analysis_id" ]; then
              echo "::warning::Failed to upload $filename: $response"
              continue
            fi

            echo "$filename=$analysis_id" >> results/scans.txt
            echo "  Analysis ID: $analysis_id"

            # Rate limit: VT free tier allows 4 req/min
            sleep 16
          done

      - name: Wait for analysis completion
        env:
          VT_API_KEY: ${{ secrets.VT_API_KEY }}
        run: |
          echo "Waiting 60s for VirusTotal analysis to complete..."
          sleep 60

          vt_report="## 🛡️ VirusTotal Scan Results\n\n"
          vt_report+="| File | Result | Link |\n"
          vt_report+="|------|--------|------|\n"

          while IFS='=' read -r filename analysis_id; do
            result=$(curl -s --request GET \
              --url "https://www.virustotal.com/api/v3/analyses/$analysis_id" \
              --header "x-apikey: $VT_API_KEY")

            malicious=$(echo "$result" | jq -r '.data.attributes.stats.malicious // 0')
            undetected=$(echo "$result" | jq -r '.data.attributes.stats.undetected // 0')
            sha256=$(echo "$result" | jq -r '.meta.file_info.sha256 // empty')

            if [ "$malicious" = "0" ]; then
              status="✅ Clean ($undetected engines)"
            else
              status="⚠️ $malicious detections"
            fi

            link="https://www.virustotal.com/gui/file/$sha256"
            vt_report+="| \`$filename\` | $status | [View]($link) |\n"

            sleep 16
          done < results/scans.txt

          echo -e "$vt_report" > results/report.md
          cat results/report.md

      - name: Append scan results to release notes
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          current_body=$(gh release view "${{ steps.tag.outputs.tag }}" \
            --repo "${{ github.repository }}" \
            --json body --jq '.body')

          new_body="${current_body}

          $(cat results/report.md)"

          gh release edit "${{ steps.tag.outputs.tag }}" \
            --repo "${{ github.repository }}" \
            --notes "$new_body"