name: Release

on:
  push:
    tags:
      - "v*"

permissions:
  contents: write

jobs:
  windows-release:
    name: Build Windows Release
    runs-on: windows-latest
    env:
      ZIG_VERSION: 0.16.0
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Resolve release metadata
        id: meta
        shell: pwsh
        run: |
          $tagName = "${{ github.ref_name }}"
          if (-not $tagName.StartsWith("v")) {
            throw "标签必须以 v 开头，例如 v2.12.10"
          }

          $appVersion = $tagName.Substring(1)
          $argsFile = Get-Content "src/cli/args.zig" -Raw
          $match = [regex]::Match($argsFile, 'pub const version = "([^"]+)"')
          if (-not $match.Success) {
            throw "无法从 src/cli/args.zig 读取版本号"
          }

          $codeVersion = $match.Groups[1].Value
          if ($codeVersion -ne $appVersion) {
            throw "代码版本 $codeVersion 与标签版本 $appVersion 不一致"
          }

          $assetBase = "pxder-v$appVersion-windows-x64"
          "app_version=$appVersion" >> $env:GITHUB_OUTPUT
          "asset_base=$assetBase" >> $env:GITHUB_OUTPUT

      - name: Install Zig
        shell: pwsh
        run: |
          $zigVersion = $env:ZIG_VERSION
          $zigZip = "zig-x86_64-windows-$zigVersion.zip"
          $zigUrl = "https://ziglang.org/download/$zigVersion/$zigZip"
          $zigRoot = Join-Path $env:RUNNER_TEMP "zig"
          $zigExtract = Join-Path $zigRoot "extract"

          New-Item -ItemType Directory -Force -Path $zigRoot | Out-Null
          Invoke-WebRequest $zigUrl -OutFile (Join-Path $zigRoot $zigZip)
          Expand-Archive -Path (Join-Path $zigRoot $zigZip) -DestinationPath $zigExtract -Force

          $zigDir = Get-ChildItem -Path $zigExtract -Directory | Select-Object -First 1
          if (-not $zigDir) {
            throw "Zig 解压失败"
          }

          $zigDir.FullName >> $env:GITHUB_PATH

      - name: Show Zig version
        shell: pwsh
        run: zig version

      - name: Run tests
        shell: pwsh
        run: zig build test -Dtarget=x86_64-windows-gnu -Doptimize=ReleaseSafe

      - name: Build release binary
        shell: pwsh
        run: zig build -Dtarget=x86_64-windows-gnu -Doptimize=ReleaseSafe

      - name: Package release assets
        id: package
        shell: pwsh
        run: |
          $assetBase = "${{ steps.meta.outputs.asset_base }}"
          $distRoot = Join-Path $env:RUNNER_TEMP "release-assets"
          $portableRoot = Join-Path $distRoot $assetBase
          $exeSource = "zig-out/bin/pxder.exe"

          if (-not (Test-Path $exeSource)) {
            throw "未找到构建产物 $exeSource"
          }

          New-Item -ItemType Directory -Force -Path $portableRoot | Out-Null

          $exeAsset = Join-Path $distRoot "$assetBase.exe"
          Copy-Item $exeSource $exeAsset

          Copy-Item $exeSource (Join-Path $portableRoot "pxder.exe")
          Copy-Item "README.md" (Join-Path $portableRoot "README.md")
          Copy-Item "LICENSE" (Join-Path $portableRoot "LICENSE")

          $zipAsset = Join-Path $distRoot "$assetBase.zip"
          if (Test-Path $zipAsset) {
            Remove-Item $zipAsset -Force
          }
          Compress-Archive -Path (Join-Path $portableRoot "*") -DestinationPath $zipAsset

          "exe_asset=$exeAsset" >> $env:GITHUB_OUTPUT
          "zip_asset=$zipAsset" >> $env:GITHUB_OUTPUT

      - name: Create or update GitHub release
        env:
          GH_TOKEN: ${{ github.token }}
        shell: pwsh
        run: |
          $tagName = "${{ github.ref_name }}"
          $appVersion = "${{ steps.meta.outputs.app_version }}"
          $exeAsset = "${{ steps.package.outputs.exe_asset }}"
          $zipAsset = "${{ steps.package.outputs.zip_asset }}"

          gh release view $tagName *> $null
          if ($LASTEXITCODE -eq 0) {
            gh release upload $tagName $exeAsset $zipAsset --clobber
          } else {
            gh release create $tagName $exeAsset $zipAsset `
              --title "pxder $appVersion" `
              --generate-notes
          }