gitlab.auto

#!/usr/bin/env bash

# -------------------------------------------------------------------------------
#
#    Copyright (c) 2016 Slava Vladyshevsky. All rights reserved.
#    Licensed under the MIT License. See LICENSE file in the project root.
#
#    Author:  Slava Vladyshevsky <slava.vladyshevsky(a)gmail.com>
#    Project: DevOps Automation
#
#    Bash auto-completion for the gitlab tool
#
# -------------------------------------------------------------------------------

# see https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion-Builtins.html
# $1: is the name of the command whose arguments are being completed
# $2: is the word being completed, equal to ${COMP_WORDS[COMP_CWORD]}
# $3: is the word preceding the word being completed, equal to ${COMP_WORDS[COMP_CWORD-1]}
_comp_gitlab() {
  # the basic CLI objects
  local objects="group project user"
  local args=""
  COMPREPLY=()

  if [[ "${1} ${objects}" =~ ${3} ]] ; then
    case "${3}" in
      group)        args="list dir add create del remove users members adduser useradd deluser userdel" ;;
      project|user) args="list dir add create del remove" ;;
      ${1})        args=${objects} ;;
      *) return 0 ;;
    esac
  else
    case "${COMP_WORDS[1]}-${COMP_WORDS[2]}" in
      group-list|group-dir)        args="--pattern --format" ;;
      group-add|group-create)      args="--group --description" ;;
      group-del|group-remove)      args="--group" ;;
      group-users|group-members)   args="--group --format" ;;
      group-adduser|group-useradd) args="--group --login --access" ;;
      group-deluser|group-userdel) args="--group --login" ;;
      project-list|project-dir)    args="--group --pattern --format" ;;
      project-add|project-create)  args="--project --group --description" ;;
      project-del|project-remove)  args="--project --group" ;;
      user-list|user-dir)          args="--pattern --format" ;;
      user-add|user-create)        args="--login --name --mail --org" ;;
      user-del|user-remove)        args="--login" ;;
      *) return 0 ;;
    esac
  fi

  # complete the choice for some of the common arguments
  if [[ ${3} == --* ]] ; then
    local IFS=$'\n\t'
    case "${3}" in
      --org)    args=$(${1%/*}/ldap org list 2>/dev/null) ;;
      --group)  args=$(${1} group list --format list 2>/dev/null) ;;
      --login)  args=$(${1} user list --format list 2>/dev/null) ;;
      --access) args=$'guest\treporter\tdeveloper\tmaster\towner' ;;
      --format) args=$'list\ttable' ;;
      *) return 0 ;;
    esac
    COMPREPLY=($(compgen -W "${args[*]}" -- ${2}))
    # escaping spaces and other unsafe characters
    COMPREPLY=($(printf "%q\n" "${COMPREPLY[@]}"))
    return 0
  fi

  COMPREPLY=($(compgen -W "${args[*]}" -- ${2}))
  return 0
}

complete -F _comp_gitlab gitlab