Composer inside a container with completions

30-composer

#!/usr/bin/env bash

composer() {
  if ! docker volume exists composer_data; then
    docker volume create composer_data
  fi

  docker run --rm \
    --interactive \
    --tty \
    --volume composer_data:/tmp \
    --user "$(id -u):$(id -g)" \
    --volume "$PWD:/app" \
    docker.io/library/composer "${@}"

  return $?
}

_composer_completion() {
  local tmp_filepath="/var/tmp/composer-list.json"
  local cur_command="list"
  local word_list=""
  local options_list=""

  if ! test -f "${tmp_filepath}"; then
    composer --format=json list >"${tmp_filepath}"
  fi

  if test "${COMP_CWORD}" -eq 1; then
    word_list="$(jq --raw-output '.namespaces[].commands | join(" ")' "${tmp_filepath}")"
  else
    cur_command="${COMP_WORDS[1]}"
  fi

  options_list="$(jq --arg cur_command "${cur_command}" --raw-output '.commands[] | select(.name==$cur_command) | [.definition.options[].name] | join(" ")' "${tmp_filepath}")"
  word_list="${word_list} ${options_list}"

  # shellcheck disable=SC2207
  COMPREPLY+=($(compgen -W "${word_list}" -- "${COMP_WORDS[COMP_CWORD]}"))
}

complete -o bashdefault -F _composer_completion composer