name: Build & Release

on:
  push:
    tags:
      - "v*"

permissions:
  contents: write

jobs:
  create-release:
    runs-on: ubuntu-latest
    outputs:
      release-id: ${{ steps.create.outputs.id }}
    steps:
      - name: Create draft release
        id: create
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="${{ github.ref_name }}"
          REPO="${{ github.repository }}"
          gh release view "$TAG" --repo "$REPO" >/dev/null 2>&1 && \
            echo "id=$(gh release view "$TAG" --repo "$REPO" --json id --jq '.id')" >> "$GITHUB_OUTPUT" && \
            echo "Release already exists." && exit 0

          gh release create "$TAG" \
            --repo "$REPO" \
            --title "Clustri $TAG" \
            --notes "See the assets below to download and install." \
            --draft --verify-tag --target main
          echo "id=$(gh release view "$TAG" --repo "$REPO" --json id --jq '.id')" >> "$GITHUB_OUTPUT"

  build:
    needs: create-release
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: ubuntu-22.04
            runner: ubuntu-22.04
            target: ""
          - platform: windows
            runner: windows-latest
            target: ""
          - platform: macos
            runner: macos-latest
            target: "--target universal-apple-darwin"

    runs-on: ${{ matrix.runner }}

    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: npm

      - name: Install frontend dependencies
        run: npm ci

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.platform == 'macos' && 'aarch64-apple-darwin,x86_64-apple-darwin' || '' }}

      - name: Rust cache
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: src-tauri

      - name: Install Linux dependencies
        if: matrix.platform == 'ubuntu-22.04'
        run: |
          sudo apt-get update
          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf

      - name: Build
        shell: bash
        env:
          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
        run: npx tauri build ${{ matrix.target }}

      - name: Upload artifacts
        shell: bash
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          TAG="${{ github.ref_name }}"
          REPO="${{ github.repository }}"

          upload() {
            local file="$1"
            if [ -f "$file" ]; then
              echo "Uploading $(basename "$file")..."
              gh release upload "$TAG" "$file" --clobber --repo "$REPO" || true
            fi
          }

          find src-tauri/target -path "*/bundle/*" \( \
            -name "*.deb" -o -name "*.rpm" -o -name "*.AppImage" -o \
            -name "*.dmg" -o -name "*.app.tar.gz" -o -name "*.msi" -o \
            -name "*.exe" -o -name "*.nsis.zip" -o -name "*.msi.zip" -o \
            -name "*.sig" \
          \) -type f | while read f; do
            upload "$f"
          done

  update-latest-json:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Generate and upload latest.json
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          python3 << 'PYEOF'
          import json, subprocess, os, tempfile

          tag = os.environ["GITHUB_REF_NAME"]
          repo = os.environ["GITHUB_REPOSITORY"]
          version = tag.lstrip("v")
          base_url = f"https://github.com/{repo}/releases/download/{tag}"

          def run(cmd):
              return subprocess.check_output(cmd, shell=True, text=True).strip()

          data = json.loads(run(f'gh release view "{tag}" --repo "{repo}" --json assets'))
          assets = {a["name"]: a for a in data["assets"]}

          def find_asset(pattern):
              for name in assets:
                  if pattern in name:
                      return name
              return None

          def download_sig(name):
              if not name:
                  return ""
              with tempfile.TemporaryDirectory() as d:
                  subprocess.run(
                      f'gh release download "{tag}" --repo "{repo}" -p "{name}" -D "{d}"',
                      shell=True, capture_output=True
                  )
                  path = os.path.join(d, name)
                  if os.path.exists(path):
                      with open(path) as f:
                          return f.read().strip()
              return ""

          platforms = {}

          # Linux AppImage
          app = find_asset(".AppImage")
          sig = find_asset(".AppImage.sig")
          if app and sig:
              s = download_sig(sig)
              if s:
                  platforms["linux-x86_64"] = {"signature": s, "url": f"{base_url}/{app}"}

          # Windows NSIS
          exe = find_asset("-setup.exe")
          sig = find_asset("nsis.zip.sig")
          if exe and sig:
              s = download_sig(sig)
              if s:
                  platforms["windows-x86_64"] = {"signature": s, "url": f"{base_url}/{exe}"}

          # macOS universal
          app = find_asset("app.tar.gz")
          sig = find_asset("app.tar.gz.sig")
          if app and sig:
              s = download_sig(sig)
              if s:
                  platforms["darwin-x86_64"] = {"signature": s, "url": f"{base_url}/{app}"}
                  platforms["darwin-aarch64"] = {"signature": s, "url": f"{base_url}/{app}"}

          latest = {
              "version": version,
              "notes": "See the assets below to download and install.",
              "pub_date": run("date -u +%Y-%m-%dT%H:%M:%SZ"),
              "platforms": platforms,
          }

          with open("/tmp/latest.json", "w") as f:
              json.dump(latest, f, indent=2)

          print(json.dumps(latest, indent=2))
          PYEOF

          gh release upload "${{ github.ref_name }}" /tmp/latest.json --clobber --repo "${{ github.repository }}"
          echo "latest.json uploaded."