name: Build Windows release

on:
  workflow_call:
    inputs:
      version:
        description: 'Release version (git tag), e.g. 1.18.4'
        type: string
        required: false
      ref:
        description: 'Git ref to check out and build'
        type: string
        required: false
      draft_tag:
        description: 'Draft GitHub release tag to attach the asset to (e.g. untagged-xxxx). Empty = skip upload.'
        type: string
        required: false
    secrets:
      GH_TOKEN:
        required: false

  workflow_dispatch:
    inputs:
      ref:
        description: 'Git ref to check out and build'
        type: string
        required: false

jobs:
  build-windows:
    runs-on: windows-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.ref || github.ref }}

      - name: Set up Rust toolchain (MSVC)
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: x86_64-pc-windows-msvc

      - name: Cache cargo build
        uses: Swatinem/rust-cache@v2

      - name: Build (cargo release)
        shell: pwsh
        run: cargo build --release --bin app

      - name: Prepare artifact zip
        id: prepare_artifact
        shell: pwsh
        env:
          RELEASE_VERSION: ${{ inputs.version }}
        run: |
          $tag = $env:RELEASE_VERSION
          if (-not $tag) { $tag = $env:GITHUB_SHA }

          $exe = "target\release\app.exe"
          if (-not (Test-Path $exe)) { Write-Error "Built binary $exe not found in target/release"; exit 1 }

          $outDir = "artifact"
          New-Item -ItemType Directory -Path $outDir -Force | Out-Null
          # Ship under the package name, not the internal bin name "app".
          Copy-Item -Path $exe -Destination "$outDir\portabase-agent.exe"

          $zipName = "windows-release-$tag.zip"
          if (Test-Path $zipName) { Remove-Item $zipName }
          Compress-Archive -Path "$outDir\*" -DestinationPath $zipName -Force
          "zip=$zipName" | Out-File -FilePath $env:GITHUB_OUTPUT -Encoding utf8 -Append

      - name: Upload build artifact
        uses: actions/upload-artifact@v4
        with:
          name: windows-release
          path: ${{ steps.prepare_artifact.outputs.zip }}

      - name: Attach asset to draft release
        if: ${{ inputs.draft_tag != '' }}
        shell: pwsh
        env:
          GH_TOKEN: ${{ secrets.GH_TOKEN }}
        run: |
          gh release upload "${{ inputs.draft_tag }}" "${{ steps.prepare_artifact.outputs.zip }}" --clobber