check-dependencies.ps1

function check_dependencies {
  $py_missing="Python version 3.10 or higher was not found on your system. Please install it and rerun this script. You can download the latest version from the official website: https://www.python.org/downloads/"
  $pip_missing="Pip was not found. Pip version 20.0 or higher is required for this project. You can find guidelines on this here: https://packaging.python.org/en/latest/tutorials/installing-packages/#ensure-you-can-run-pip-from-the-command-line"
  $npm_missing="Node.js/npm was not found. Please make sure you have installed Node.js version 16.0 or higher along with npm correctly. You can download Nodejs from here: https://nodejs.org/en/download"

    if (Get-Command python -ErrorAction SilentlyContinue) {
      if (!(python -c "import sys; exit(0) if sys.version_info >= (3,10) else exit(1)" 2>&1).Count -eq 0) {
        return "$py_missing"
        exit 1
      }
    } else {
      return "$py_missing"
      exit 1
    }

    if (!(python -m pip --version 2-ge$null)) {
      return "$pip_missing"
      exit 1
  }

    $MINIMUM_PIP_VERSION = "20.0"
    $PIP_VERSION = (python -m pip --version | Select-String -Pattern '\d+(\.\d+)+').Matches.Value

    if (!([version]$PIP_VERSION -ge [version]$MINIMUM_PIP_VERSION)) {
      return "An older version of pip was found. Pip version 20.0 or higher is required for this project. To upgrade run following command: 'pip install --upgrade pip' or 'python3 -m pip install --upgrade pip'"
      exit 1
    }

    if (!(Get-Command npm -ErrorAction SilentlyContinue)) {
      return "$npm_missing"
      exit 1
    }
    return ''
}