dev-container

#!/usr/bin/env bash
# executing bash through env gives extra flexibility becuase env
# resolves path to bash depending on the os

declare -A ENV_VARS
ENV_VARS=( \
  ["KUBECONFIG"]="  (optional) Path to the kubeconfig that will be mounted and set as \"KUBECONFIG\" in the container."
)

function main() {
  export TOP_LEVEL_DIR=$(git rev-parse --show-toplevel)
  export BUILD_CONTEXT="${TOP_LEVEL_DIR}/build-dev-container"
  export CONTAINER_HOME="/home"
  export WORKDIR="/leonard-gitops"

	parse_parameters $@

  set_user_variables

  if [[ "${CMD}" == "build" ]]; then
    docker-compose \
      --file "${BUILD_CONTEXT}/docker-compose.yaml" \
      build
  elif [[ "${CMD}" == "run" ]]; then
    docker-compose \
      --file "${BUILD_CONTEXT}/docker-compose.yaml" \
      run \
        --rm \
      dev
  fi
}

function parse_parameters() {
	while [[ "$#" > 0 ]]
	do
		case "$1" in 
			-h|--help)
				print_menu
				exit 0
				;;
			build)
				CMD="build"
				shift
				;;
			run)
				CMD="run"
				shift
				;;
			--)
				break
				;;
			-*)
				echo "Invalid option '$1'. Use --help to see the valid options" >&2
				exit 1
				;;
			*)
				break	
				;;
		esac
		shift
	done	
}

function print_menu() {
  echo "Usage: ./dev_container.sh [-options]"
  for var in "${!ENV_VARS[@]}"; do
    echo "${var}:                 ${ENV_VARS[${var}]}"
  done
  echo ""
  echo "Commands (required):"
  echo "run                           Enter the development container with various credentials mounted."
  echo "build                         Build the development container."
  echo ""
  echo "Parameters (optional):"
  echo '  -s   | --shell              Set the container shell (options: ["zsh", "bash"]).                   (default: "zsh")'
  echo '  -rc  | --shellrc            Shellrc file to be mounted o the container.                           (default: ".zshrc")'
  echo '  -sh  | --shell-history      Shell history file to be mounted to the container.                    (default: ".zsh_history")'
  # echo '  -kf  | --kubeconfig-folder  Mount a folder with kubeconfigs to the dev container in path ~/.kube. (default: ${HOME}/.kube)'
  # echo '  -op  | --oidc-port          Port in container and in host system for oidc communication.          (default port: 8000)'
  echo '  -h   | --help               Prints the help'
}

function set_user_variables() {
  # if [[ $(uname -s) == "Darwin" ]]; then
  #   export uid=$(id -u)
  #   export gid=$(id -g)    
  # elif [[ $(uname -s) == "Linux" ]]; then
  #   export uid=$(id --user)
  #   export gid=$(id --group)
  # fi
	export username=$(whoami)
	export uid=$(id -u)
	export gid=$(id -g)    
}

main "${@}"