install

#!/usr/bin/env bash

importLib "lib/lib-docker.sh"

# ---------------------------------------------------------------------
# Variables
# ---------------------------------------------------------------------

# Get current file name
CURRENT_FILE_NAME="$(basename "${BASH_SOURCE[0]}")"

# Save command name
args=("$@")
COMMAND_NAME="${args[0]}"

# ---------------------------------------------------------------------
# Messages
# ---------------------------------------------------------------------

MESSAGE_INSTALL_START="Starting installation...";
MESSAGE_INSTALL_ALREADY_INSTALLED="Already installed!";
MESSAGE_INSTALL_SUCCESS="Installation completed!";
MESSAGE_INSTALL_FAILED="Installation failed!";

MESSAGE_TARGET_NOT_WRITABLE="Target path is not writable with the current user, please check the permissions or run the script as root";
MESSAGE_TARGET_NOT_DIRECTORY="Target path is not a directory, please check the path or run the script as root";

# ---------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------

usage() {
  helpify_title "install" "[OPTIONS...]"
  helpify_subtitle "Install the GDRCD development stack"; echo;
  helpify_subtitle "OPTIONS:"
  helpify "-h, --help"          "Show this help"
  helpify "-t, --target"        "Set the global command installation path"      "[/usr/local/bin]"
  helpify "-f, --force"         "Force reinstallation of global command"
}

usage4help() {
  helpify "install"       "Installing the GDRCD development stack"
}

# ---------------------------------------------------------------------
# Main
# ---------------------------------------------------------------------

#---------------------------PARSE ARGUMENTS-------------------------------#

# Set default values
target="/usr/local/bin"
force_reinstall="false"

# Parse arguments
while [[ $# -gt 0 ]]; do
  # if the argument is the command name, skip it
  if [[ "$1" == "${COMMAND_NAME}" ]]; then
    shift; continue
  fi

  case "${1}" in
    -h|--help)
      need_help="true"; shift ;;
    -t|--target)
      target="${2}"; shift; shift ;;
    -f|--force)
      force_reinstall="true"; shift ;;
    *)
      messageUnknownCommand "$COMMAND_NAME" "$1"; exit 1;;
  esac
done

# Execute post argument parsing checks
finalize_argument_parsing

#---------------------------RUN COMMAND-------------------------------#

install() {
  message --magenta "${MESSAGE_INSTALL_START}";

  # Check if the target path is a directory
  if [[ ! -d "$target" ]]; then
    message --error "${MESSAGE_TARGET_NOT_DIRECTORY}";
    exit 1;
  fi;

    # Check if the target path is writable
    if [[ ! -w "$target" ]]; then
      message --error "${MESSAGE_TARGET_NOT_WRITABLE}";
      exit 1;
    fi;

  # Check if stack is already installed
  if [[ -f "${target}/${PROJECT}" ]]; then
    if [[ "${force_reinstall}" == "true" ]]; then
      rm -f "${target}/${PROJECT}";
    else
      message --error "${MESSAGE_INSTALL_ALREADY_INSTALLED}";
      exit 1;
    fi;
  fi;

  # Create the target path if it does not exist
  if [[ ! -d "$target" ]]; then
    mkdir -p "$target";
  fi;

  # Create link to the stack binary
  ln -sf "${STACK_DIR}/run" "$target/${PROJECT}" 2>/dev/null;

  # Set the permissions
  chmod +x "$target/${PROJECT}";

  # Check if the installation was successful
  if [[ -f "$target/${PROJECT}" ]]; then
    message --success "${MESSAGE_INSTALL_SUCCESS}";
  else
    message --error "${MESSAGE_INSTALL_FAILED}";
    exit 1;
  fi;
}

# Run command if this file is the command file
if [[ "${COMMAND_NAME}" == "${CURRENT_FILE_NAME}" ]]; then
  logo;
  install;
fi