Bash script is used for running nested named scripts from "scripts.json"

scripts.json

{
    "scripts": {
        "dc": "ls @l",
        "l": "-l",
        "pwd": "pwd",
        "echo": "echo Monkey",
        "another": "sudo @dc",
        "docker": "docker ps"
    }
}

yank

#!/usr/bin/env bash
#author       :Ruslan Kostikov <[email protected]>
#description  :This script is used for running nested named scripts from "scripts.json"

# Written with best practices:
# - https://www.davidpashley.com/articles/writing-robust-shell-scripts/
# - https://github.com/progrium/bashstyle

[[ "$TRACE" ]] && set -o xtrace # For debugging. Print command traces before executing command.
set -o errexit # Tells bash that it should exit the script if any statement returns a non-true return value
set -o nounset # Exit script if you try to use an uninitialised variable
set -o pipefail # false | true will be considered to have fail
set -o noclobber # IO redirection

alias errcho=">&2 echo"

scripts=$(jq '.scripts' scripts.json)
keys=$(echo "${scripts}" | jq 'keys[]')

main() {
  local cmd="${1-}"
  local options="${2-}"
  local prepared_script

  prepared_script="$(generate_script "${cmd}")"
  eval "${prepared_script}" "${options}"
}


generate_script()
{
  local command="${1//@}"
  local raw_script;

  if [[ ${keys} =~ ${command} ]]; then
    raw_script="$(echo "${scripts}" | jq -r ."${command}")"
    proceed_raw_script "${raw_script}"
  else
    echo "${command}"
  fi
}

proceed_nested_script()
{
  local nested_script="$1"
  local prepared_script

  for nested_sign in ${nested_script}; do
    signature="$(generate_script "${nested_sign}")"
    prepared_script+=("${signature}");
  done

  echo "${prepared_script[@]}"
}

proceed_signature()
{
  local signature="$1"
  local prepared_script
#  printf "@ Signature: %s" "${signature}"

  if [[ ${signature} =~ @ ]]; then
#    printf "@ Signature: ${signature}"
    nested_script="$(echo "${scripts}" | jq -r ."${signature//@}")"
    prepared_script+=("$(proceed_nested_script "${nested_script}")")
  else
    prepared_script+=("${signature}");
  fi

  echo "${prepared_script[@]}"
}

proceed_raw_script()
{
  local raw_script="$1"
  local prepared_script

  for signature in ${raw_script}; do
    prepared_script+=("$(proceed_signature "${signature}")")
  done

  echo "${prepared_script[@]}"
}

if [[ $# != 0 && ${keys} =~ $1 ]]; then
  main "$1" "${*:2}"
else
  echo 'Command not found. Available commands: '
  echo "${keys}"
fi