name: Build Windows Desktop Client

on:
  workflow_dispatch:
    inputs:
      app_version:
        description: "Optional app version for this build, e.g. 0.1.3"
        required: false
        default: ""

jobs:
  build-windows-client:
    name: Build Windows Client
    runs-on: ubuntu-latest

    defaults:
      run:
        shell: bash
        working-directory: desktop-client

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "22"

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: x86_64-pc-windows-msvc

      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            build-essential \
            clang \
            lld \
            llvm \
            curl \
            wget \
            file \
            nsis \
            osslsigncode \
            pkg-config \
            libssl-dev \
            libayatana-appindicator3-dev \
            librsvg2-dev \
            patchelf

      - name: Install cargo-xwin
        run: |
          if ! cargo xwin --version >/dev/null 2>&1; then
            cargo install --locked cargo-xwin
          fi

      - name: Install desktop client dependencies
        run: npm install

      - name: Apply requested app version
        if: ${{ github.event.inputs.app_version != '' }}
        run: |
          set -euo pipefail
          VERSION="${{ github.event.inputs.app_version }}"
          export VERSION

          case "${VERSION}" in
            *[!0-9A-Za-z.+-]*|'')
              echo "Invalid app_version: ${VERSION}"
              exit 1
              ;;
          esac

          node -e '
            const fs = require("fs");
            const version = process.env.VERSION;
            const pkgPath = "package.json";
            const pkg = JSON.parse(fs.readFileSync(pkgPath, "utf8"));
            pkg.version = version;
            fs.writeFileSync(pkgPath, JSON.stringify(pkg, null, 2) + "\n");
          '

          node -e '
            const fs = require("fs");
            const version = process.env.VERSION;
            const configPath = "src-tauri/tauri.conf.json";
            const config = JSON.parse(fs.readFileSync(configPath, "utf8"));
            config.version = version;
            fs.writeFileSync(configPath, JSON.stringify(config, null, 2) + "\n");
          '

          perl -0pi -e 's/^version = ".*?"$/version = "'"${VERSION}"'"/m' src-tauri/Cargo.toml

          echo "Using app version ${VERSION}"

      - name: Build bundled Windows tunnel helper
        run: npm run helper:windows-x64

      - name: Prepare signing certificate
        if: ${{ secrets.WINDOWS_SIGN_PFX_B64 != '' && secrets.WINDOWS_SIGN_PFX_PASSWORD != '' }}
        run: |
          printf '%s' "${{ secrets.WINDOWS_SIGN_PFX_B64 }}" | base64 -d > /tmp/nexavpn-signing-cert.pfx

      - name: Sign bundled Windows tunnel helper
        if: ${{ secrets.WINDOWS_SIGN_PFX_B64 != '' && secrets.WINDOWS_SIGN_PFX_PASSWORD != '' }}
        run: |
          set -euo pipefail
          timestamp_url="${{ secrets.WINDOWS_SIGN_TIMESTAMP_URL }}"
          if [ -z "${timestamp_url}" ]; then
            timestamp_url="http://timestamp.digicert.com"
          fi
          helper_path="src-tauri/bundled/windows-x64/nexavpn-tunnel-helper.exe"
          signed_path="${helper_path}.signed"
          osslsigncode sign \
            -pkcs12 /tmp/nexavpn-signing-cert.pfx \
            -pass "${{ secrets.WINDOWS_SIGN_PFX_PASSWORD }}" \
            -h sha256 \
            -ts "${timestamp_url}" \
            -in "${helper_path}" \
            -out "${signed_path}"
          mv "${signed_path}" "${helper_path}"

      - name: Build Windows installer
        run: npm run tauri:build:windows-x64:linux

      - name: Prepare artifact names
        run: |
          set -euo pipefail
          VERSION="${{ github.event.inputs.app_version }}"
          if [ -n "${VERSION}" ]; then
            echo "ARTIFACT_SUFFIX=-${VERSION}" >> "${GITHUB_ENV}"
          else
            echo "ARTIFACT_SUFFIX=" >> "${GITHUB_ENV}"
          fi

      - name: Sign Windows desktop executable and installer
        if: ${{ secrets.WINDOWS_SIGN_PFX_B64 != '' && secrets.WINDOWS_SIGN_PFX_PASSWORD != '' }}
        run: |
          set -euo pipefail
          timestamp_url="${{ secrets.WINDOWS_SIGN_TIMESTAMP_URL }}"
          if [ -z "${timestamp_url}" ]; then
            timestamp_url="http://timestamp.digicert.com"
          fi

          sign_file() {
            local input_path="$1"
            local output_path="${input_path}.signed"
            osslsigncode sign \
              -pkcs12 /tmp/nexavpn-signing-cert.pfx \
              -pass "${{ secrets.WINDOWS_SIGN_PFX_PASSWORD }}" \
              -h sha256 \
              -ts "${timestamp_url}" \
              -in "${input_path}" \
              -out "${output_path}"
            mv "${output_path}" "${input_path}"
          }

          sign_file "src-tauri/target/x86_64-pc-windows-msvc/release/nexavpn-desktop.exe"

          shopt -s nullglob
          for installer in src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis/*.exe; do
            sign_file "${installer}"
          done

      - name: Cleanup signing certificate
        if: ${{ always() && secrets.WINDOWS_SIGN_PFX_B64 != '' && secrets.WINDOWS_SIGN_PFX_PASSWORD != '' }}
        run: rm -f /tmp/nexavpn-signing-cert.pfx

      - name: Upload Windows installer
        uses: christopherhx/gitea-upload-artifact@v4
        with:
          name: NexaVPN-windows-installer${{ env.ARTIFACT_SUFFIX }}
          path: |
            desktop-client/src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis/*.exe
            desktop-client/src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis/*.msi
          if-no-files-found: error

      - name: Upload raw Windows build outputs
        uses: christopherhx/gitea-upload-artifact@v4
        with:
          name: NexaVPN-windows-raw-build${{ env.ARTIFACT_SUFFIX }}
          path: |
            desktop-client/src-tauri/target/x86_64-pc-windows-msvc/release/nexavpn-desktop.exe
            desktop-client/src-tauri/bundled/windows-x64/nexavpn-tunnel-helper.exe
            desktop-client/src-tauri/bundled/windows-x64/wireguard-installer.msi
          if-no-files-found: error