name: Unreal Engine Build

on:
  push:
    branches: [ main, develop ]

jobs:
  windows-build:
    runs-on: windows
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          lfs: true
          fetch-depth: 0
      
      - name: Set Unreal Engine Path
        run: |
          echo "UE_ROOT=F:\LuckyRobots\LuckyRobots\Engine" >> $Env:GITHUB_ENV
          echo "DOTNET_CLI_HOME=$env:TEMP" >> $Env:GITHUB_ENV
          echo "MSBUILDDISABLENODEREUSE=1" >> $Env:GITHUB_ENV
          echo "DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1" >> $Env:GITHUB_ENV
          echo "DOTNET_CLI_TELEMETRY_OPTOUT=1" >> $Env:GITHUB_ENV
          echo "DOTNET_BUILD_OUTPUT_DIR=$env:TEMP\dotnet-build" >> $Env:GITHUB_ENV
        
      - name: Set up build environment
        run: |
          # Create a custom build output directory in temp
          $buildRoot = Join-Path $env:TEMP "unreal-build"
          $dotnetBuildDir = Join-Path $buildRoot "dotnet-build"
          $buildOutputDir = Join-Path $buildRoot "output"
          
          # Create directories with full permissions
          foreach ($dir in @($buildRoot, $dotnetBuildDir, $buildOutputDir)) {
            New-Item -ItemType Directory -Force -Path $dir
            icacls $dir /grant Everyone:F /T
          }
          
          # Set environment variables for build paths
          echo "DOTNET_BUILD_OUTPUT_DIR=$dotnetBuildDir" >> $Env:GITHUB_ENV
          echo "DOTNET_CLI_HOME=$dotnetBuildDir" >> $Env:GITHUB_ENV
          echo "DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1" >> $Env:GITHUB_ENV
          echo "DOTNET_CLI_TELEMETRY_OPTOUT=1" >> $Env:GITHUB_ENV
          echo "DOTNET_USE_POLLING_FILE_WATCHER=true" >> $Env:GITHUB_ENV
          echo "MSBUILDDISABLENODEREUSE=1" >> $Env:GITHUB_ENV
          echo "MSBuildSDKsPath=$env:UE_ROOT\Binaries\ThirdParty\DotNet\8.0.300\win-x64\sdk\8.0.300\Sdks" >> $Env:GITHUB_ENV
          
          # Clean any existing build artifacts
          Remove-Item -Path "$dotnetBuildDir\*" -Recurse -Force -ErrorAction SilentlyContinue
          Remove-Item -Path "$buildOutputDir\*" -Recurse -Force -ErrorAction SilentlyContinue
          
          # Set up global.json to use the correct SDK version
          $globalJson = @'
          {
            "sdk": {
              "version": "8.0.300",
              "rollForward": "latestFeature"
            }
          }
          '@
          Set-Content -Path "global.json" -Value $globalJson
          
          # Create Directory.Build.props to redirect all outputs
          $buildPropsContent = @'
          <?xml version="1.0" encoding="utf-8"?>
          <Project>
            <PropertyGroup>
              <BaseIntermediateOutputPath>$(DOTNET_BUILD_OUTPUT_DIR)\obj\$(MSBuildProjectName)\</BaseIntermediateOutputPath>
              <BaseOutputPath>$(DOTNET_BUILD_OUTPUT_DIR)\bin\$(MSBuildProjectName)\</BaseOutputPath>
              <IntermediateOutputPath>$(BaseIntermediateOutputPath)</IntermediateOutputPath>
              <OutputPath>$(BaseOutputPath)</OutputPath>
              <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
              <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
              <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
              <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
              <RestoreNoCache>true</RestoreNoCache>
              <EnforceWritePermissions>false</EnforceWritePermissions>
            </PropertyGroup>
          </Project>
          '@
          Set-Content -Path "Directory.Build.props" -Value $buildPropsContent -Encoding UTF8

          # Create a temporary nuget.config file to use a local package cache
          $nugetConfig = @'
          <?xml version="1.0" encoding="utf-8"?>
          <configuration>
            <config>
              <add key="globalPackagesFolder" value="$(DOTNET_BUILD_OUTPUT_DIR)\packages" />
            </config>
          </configuration>
          '@
          Set-Content -Path "nuget.config" -Value $nugetConfig -Encoding UTF8
          
          # Set MSBuild configuration to use the temp directory
          $MSBuildPath = Join-Path $env:UE_ROOT "Binaries\ThirdParty\DotNet\8.0.300\win-x64\sdk\8.0.300"
          $env:MSBuildExtensionsPath = $MSBuildPath
          $env:MSBuildSDKsPath = Join-Path $MSBuildPath "Sdks"
          echo "MSBuildExtensionsPath=$env:MSBuildExtensionsPath" >> $Env:GITHUB_ENV
          echo "MSBuildSDKsPath=$env:MSBuildSDKsPath" >> $Env:GITHUB_ENV
          echo "MSBUILD_EXE_PATH=$MSBuildPath\MSBuild.dll" >> $Env:GITHUB_ENV
        
      - name: Locate .uproject file
        run: |
          $projectPath = Get-ChildItem -Path ".\" -Filter "*.uproject" -Recurse | Select-Object -First 1 -ExpandProperty FullName
          if (-not $projectPath) {
            Write-Error "No .uproject file found in repository"
            exit 1
          }
          echo "UPROJECT_PATH=$projectPath" >> $Env:GITHUB_ENV
          Write-Host "Found project file: $projectPath"

      - name: Build Unreal Project
        run: |
          # Create and set permissions for build output directory
          $buildOutputDir = Join-Path $env:TEMP "unreal-build\output"
          New-Item -ItemType Directory -Force -Path $buildOutputDir
          icacls $buildOutputDir /grant Everyone:F
          
          # Register dotnet locally
          $dotnetPath = Join-Path $env:UE_ROOT "Binaries\ThirdParty\DotNet\8.0.300\win-x64\dotnet.exe"
          $env:PATH = "$env:UE_ROOT\Binaries\ThirdParty\DotNet\8.0.300\win-x64;$env:PATH"
          
          # Make a local copy of the MSBuild directory with write permissions
          $customMSBuildDir = Join-Path $env:TEMP "msbuild-custom"
          New-Item -ItemType Directory -Force -Path $customMSBuildDir
          Copy-Item -Path "$env:UE_ROOT\Binaries\ThirdParty\DotNet\8.0.300\win-x64\sdk\8.0.300\*" -Destination $customMSBuildDir -Recurse -Force
          icacls $customMSBuildDir /grant Everyone:F /T
          
          # Set environment variables for the custom MSBuild
          $env:MSBuildExtensionsPath = $customMSBuildDir
          $env:MSBuildSDKsPath = Join-Path $customMSBuildDir "Sdks"
          
          # Run the build with environment variables 
          $uatPath = Join-Path $env:UE_ROOT "Build\BatchFiles\RunUAT.bat"
          $envVars = "set DOTNET_CLI_HOME=$env:DOTNET_CLI_HOME && " +
                     "set DOTNET_BUILD_OUTPUT_DIR=$env:DOTNET_BUILD_OUTPUT_DIR && " +
                     "set DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1 && " +
                     "set DOTNET_CLI_TELEMETRY_OPTOUT=1 && " +
                     "set DOTNET_USE_POLLING_FILE_WATCHER=true && " +
                     "set MSBuildExtensionsPath=$env:MSBuildExtensionsPath && " +
                     "set MSBuildSDKsPath=$env:MSBuildSDKsPath && " +
                     "set MSBUILD_EXE_PATH=$env:MSBUILD_EXE_PATH && "
                     
          # Find project file
          $projectPath = Get-ChildItem -Path ".\" -Filter "*.uproject" -Recurse | Select-Object -First 1 -ExpandProperty FullName
          if (-not $projectPath) {
            Write-Error "No .uproject file found in repository"
            exit 1
          }
          Write-Host "Using project file: $projectPath"
          
          # Run UAT with full command
          $cmdLine = "$envVars cmd.exe /c `"$uatPath`" BuildCookRun -project=`"$projectPath`" -noP4 -platform=Win64 -clientconfig=Development -cook -build -stage -pak -archive -archivedirectory=`"$buildOutputDir`""
          Write-Host "Running command: $cmdLine"
          Invoke-Expression $cmdLine

      - name: Upload build artifacts
        uses: actions/upload-artifact@v3
        with:
          name: windows-build
          path: BuildOutput/
          retention-days: 7

  macos-build:
    runs-on: macos
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          lfs: true
          fetch-depth: 0
      
      - name: Setup Unreal Engine
        run: |
          # Use the correct path where Unreal Engine is installed
          UE_PATH="/Users/Shared/Epic Games/UE_5.5"
          
          if [ ! -d "$UE_PATH" ]; then
            echo "Error: Unreal Engine is not installed in the expected location"
            echo "Please ensure Unreal Engine is installed at $UE_PATH"
            exit 1
          fi
          
          # Set environment variable with the correct Engine path
          echo "UE_ROOT=$UE_PATH/Engine" >> $GITHUB_ENV
          echo "Using Unreal Engine 5.5"
      
      - name: Build Unreal Project
        run: |
          # Debug information
          echo "=== Environment Information ==="
          echo "macOS Version:"
          sw_vers
          echo "Current working directory: $(pwd)"
          ls -la  # List all files in current directory
          
          echo "=== Unreal Engine Information ==="
          ls -la "$UE_ROOT/Build/BatchFiles"
          
          echo "=== Project Information ==="
          # Detailed search for the project file
          echo "Searching for .uproject files:"
          find . -name "*.uproject" -type f
          
          # Get the absolute path of the project file
          UPROJECT_PATH=$(find . -name "*.uproject" -type f | head -1)
          if [ -z "$UPROJECT_PATH" ]; then
            echo "Error: Could not find .uproject file"
            exit 1
          fi
          
          # Convert to absolute path and verify file exists
          UPROJECT_ABSOLUTE_PATH=$(realpath "$UPROJECT_PATH")
          echo "Project absolute path: $UPROJECT_ABSOLUTE_PATH"
          
          if [ ! -f "$UPROJECT_ABSOLUTE_PATH" ]; then
            echo "Error: Project file does not exist at: $UPROJECT_ABSOLUTE_PATH"
            exit 1
          fi
          
          echo "Using Unreal Engine at: $UE_ROOT"
          
          # Make the project file readable and executable
          chmod 755 "$UPROJECT_ABSOLUTE_PATH"
          
          # Run the build using absolute paths
          chmod +x "$UE_ROOT/Build/BatchFiles/RunUAT.sh"
          "$UE_ROOT/Build/BatchFiles/RunUAT.sh" BuildCookRun \
            -project="$UPROJECT_ABSOLUTE_PATH" \
            -noP4 \
            -platform=Mac \
            -clientconfig=Development \
            -cook -build -stage -pak -archive \
            -archivedirectory="$(pwd)/Build"
      
      - name: Upload build artifacts
        uses: actions/upload-artifact@v3
        with:
          name: macos-build
          path: Build/
          retention-days: 7