name: Get the Unity version required from a UPM Package.json file

on:
  workflow_call:
    inputs:
      build-host:
        required: true
        type: string
      version-file-path:
        description: 'Optional, specify a path to search for the upm package.json file. Use this if validation fails to find a valid package.json file.\n **Note, Version file MUST contain the attribute "Unity" with the full Unity version expected, e.g. "2020.2.3f1"'
        type: string
        required: false
    outputs:
      unityversion:
        description: "Returns the version of Unity the UPM package requires"
        value: ${{ jobs.get_unity_version.outputs.upmunityversion }}

jobs:
  get_unity_version:
    name: Get required Unity version from UPM Package
    runs-on: ${{ inputs.build-host }}
    outputs:
      upmunityversion: ${{ steps.getVersion.outputs.packageunityversion }}
    steps:
      - name: Script Version
        run: |
          echo "::group::Script Versioning"
          $scriptVersion = "1.0.2"
          echo "Build Script Version: $scriptVersion"
          echo "::endgroup::"
        shell: pwsh
      - uses: actions/checkout@v3
        with:
          submodules: recursive
          clean: true
      - id: getVersion
        name: 'Get Unity Version Number'
        run: |
          echo "::group::Validating input"

          $versionFile = "${{ inputs.version-file-path }}"
          if([string]::IsNullOrEmpty($versionFile))
          {
            echo 'version input was empty, using default'
            $versionFile = 'package.json'
          }
          echo 'Checking for project json at $versionFile'

          if ( -not (Test-Path -Path $versionFile) ) {
            Write-Error "Failed to find a valid package.json file"
            exit 1
          }

          echo "::endgroup::"

          echo "::group::Unity Version UPM check"

          $package_json = Get-Content -Path $versionFile | ConvertFrom-Json
          $unityVersion = $package_json.unity

          if($unityVersion.Length -lt 6) {
            echo "Error - Detected version is $unityVersion"
            echo "Unity version is too short, please check your UPM package Unity setting"
            exit 1
          }

          echo "packageunityversion=$unityVersion" >> $env:GITHUB_OUTPUT

          echo "Detected version is $unityVersion"
          echo "::endgroup::"

        shell: pwsh