check-dependencies

#!/bin/bash

function check_dependencies {
  missing=""
    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 [[ "$OSTYPE" == "darwin"* || "$OSTYPE" == "linux-gnu"*  ]]; then
    if command -v python3 &> /dev/null; then
        if ! python3 -c "import sys; exit(0) if sys.version_info >= (3,10) else exit(1)" &>/dev/null; then
            echo "$py_missing"
            exit 1
        fi
    else 
      echo "$py_missing"
      exit 1
    fi

    if ! command -v python3 -m pip &> /dev/null; then
      echo "$pip_missing"
      exit 1
    fi

    MINIMUM_PIP_VERSION="20.0"
    PIP_VERSION=$(python3 -m pip --version | awk '{print $2}')

    if ! awk 'BEGIN{exit !('$PIP_VERSION' >= '$MINIMUM_PIP_VERSION')}'; then
      echo "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
    fi


    if ! command -v npm &> /dev/null; then
      echo "$npm_missing"
      exit 1
    fi

  fi
}