#compdef gas

local curcontext="$curcontext" state line cmds ret=1

_arguments -C \

    '(- 1 *)'{-v,--version}'[display version information]' \

    '(-h|--help)'{-h,--help}'[show help information]' \

    '1: :->cmds' \

    '*: :->args' && ret=0

case $state in

    cmds)

        cmds=(

            "version:Prints Gas's version"

            "use:Uses author"

            "show:Shows your current user"

            "list:Lists your authors"

            "import:Imports current user to gasconfig"

            "help:Describe available tasks or one specific task"

            "delete:Deletes author"

            "add:Adds author to gasconfig"

        )

        _describe -t commands 'gas command' cmds && ret=0

        ;;

    args)

        case $line[1] in

            (use|delete)

                _values -S , 'authors' $(cat ~/.gas | sed -n -e 's/^\[\(.*\)\]/\1/p') && ret=0

                ;;

        esac

        ;;

esac

return ret