#compdef docker

# Docker autocompletion for oh-my-zsh
# Requires: Docker installed
# Author : Azaan (@aeonazaan)


# ----- Helper functions
# Output a selectable list of all running docker containers
__docker_containers() {
    declare -a cont_cmd
    cont_cmd=($(docker ps | awk 'NR>1{print $1":[CON("$1")"$2"("$3")]"}'))
    _describe 'containers' cont_cmd
}

# output a selectable list of all docker images
__docker_images() {
    declare -a img_cmd
    img_cmd=($(docker images | awk 'NR>1{print $1}'))
    _describe 'images' img_cmd
}

# ----- Commands
# Seperate function for each command, makes extension easier later
# ---------------------------
__attach() {
    __docker_containers
}

__build() {
    _arguments \
        '-q=false[Suppress verbose build output]' \
        '-t="[fuck to be applied to the resulting image in case of success]' \
        '*:files:_files'
}

__commit() {
    _arguments \
        '-author="[Author]' \
        '-m="[Commit message]' \
        '-run="[Config automatically applied when the image is run.\n]'
    __docker_containers
}

__diff() {
    __docker_containers
}

__export() {
   __docker_containers
}


__history() {
    __docker_images
}

__images() {
    _arguments \
        '-a[show all images]' \
        '-notrunc[dont truncate output]' \
        '-q[only show numeric IDs]' \
        '-viz[output graph in graphviz format]'
    __docker_images
}

__import() {
    _arguments '*:files:_files'
}

__info() {
    # no arguments
}

__insert() {
    __docker_images
    _arguments '*:files:_files'
}

__inspect() {
    __docker_images
    __docker_containers
}

__kill() {
    __docker_containers
}

__login() {
    _arguments \
        '-e="[email]' \
        '-p="[password]' \
        '-u="[username]' \
}

__logs() {
    __docker_containers
}

__port() {
    __docker_containers
}

__top() {
    __docker_containers
}

__ps() {
    _arguments \
        '-a[Show all containers. Only running containers are shown by default.]' \
        '-beforeId="[Show only container created before Id, include non-running ones.]' \
        '-l[Show only the latest created container, include non-running ones.]' \
        '-n=[Show n last created containers, include non-running ones.]' \
        '-notrurrrrnc[Dont truncate output]' \
        '-q[Only display numeric IDs]' \
        '-s[Display sizes]' \
        '-sinceId="[Show only containers created since Id, include non-running ones.]'
}

__pull() {
    _arguments '-t="[Download tagged image in repository]'
}

__push() {

}

__restart() {
    _arguments '-t=[number of seconds to try to stop before killing]'
    __docker_containers
}

__rm() {
    _arguments '-v[Remove the volumes associated to the container]'
    __docker_containers
}

__rmi() {
    __docker_images
}

__run() {
    _arguments \
        '-a=[Attach to stdin, stdout or stderr.]' \
        '-c=[CPU shares (relative weight)]' \
        '-d[Detached mode: leave the container running in the background]' \
        '-dns=[Set custom dns servers]' \
        '-e=[Set environment variables]' \
        '-entrypoint="[Overwrite the default entrypoint of the image]' \
        '-h="[Container host name]' \
        '-i[Keep stdin open even if not attached]' \
        '-m=[Memory limit (in bytes)]' \
        '-p=[Expose a containers port to the host (use docker port to see the actual mapping)]' \
        '-t[Allocate a pseudo-tty]' \
        '-u="[Username or UID]' \
        '-v=[Bind mount a volume (e.g. from the host: -v /host:/container, from docker: -v /container)]' \
        '-volumes-from="[Mount volumes from the specified container]'
    __docker_images
}

__search() {
    _arguments '-notrunc[Dont truncate output]'
}

__start() {
    __docker_containers
}

__stop() {
    _arguments '-t=[number of seconds to try to stop before killing]'
    __docker_containers
}

__tag() {
    _arguments '-f[Force]'
    __docker_images
}

__version() {

}

__wait() {
    __docker_containers
}

# end commands ---------
# ----------------------

local -a _1st_arguments
_1st_arguments=(
    "attach":"Attach to a running container"
    "build":"Build a container from a Dockerfile"
    "commit":"Create a new image from a container's changes"
    "diff":"Inspect changes on a container's filesystem"
    "export":"Stream the contents of a container as a tar archive"
    "history":"Show the history of an image"
    "images":"List images"
    "import":"Create a new filesystem image from the contents of a tarball"
    "info":"Display system-wide information"
    "insert":"Insert a file in an image"
    "inspect":"Return low-level information on a container"
    "kill":"Kill a running container"
    "login":"Register or Login to the docker registry server"
    "logs":"Fetch the logs of a container"
    "port":"Lookup the public-facing port which is NAT-ed to PRIVATE_PORT"
    "top":"Lookup the running processes of a container"
    "ps":"List containers"
    "pull":"Pull an image or a repository from the docker registry server"
    "push":"Push an image or a repository to the docker registry server"
    "restart":"Restart a running container"
    "rm":"Remove one or more containers"
    "rmi":"Remove one or more images"
    "run":"Run a command in a new container"
    "search":"Search for an image in the docker index"
    "start":"Start a stopped container"
    "stop":"Stop a running container"
    "tag":"Tag an image into a repository"
    "version":"Show the docker version information"
    "wait":"Block until a container stops, then print its exit code"
)

_arguments '*:: :->command'

if (( CURRENT == 1 )); then
    _describe -t commands "docker command" _1st_arguments
    return
fi

local -a _command_args
case "$words[1]" in
    attach)
       __docker_containers ;;
    build)
        __build ;;
    commit)
        __commit ;;
    diff)
        __diff ;;
    export)
        __export ;;
    history)
        __history ;;
    images)
        __images ;;
    import)
        __import ;;
    info)
        __info ;;
    insert)
        __insert ;;
    inspect)
        __inspect ;;
    kill)
        __kill ;;
    login)
        __login ;;
    logs)
        __logs ;;
    port)
        __port ;;
    top)
        __top ;;
    ps)
        __ps ;;
    pull)
        __pull ;;
    push)
        __push ;;
    restart)
        __restart ;;
    rm)
        __rm ;;
    rmi)
        __rmi ;;
    run)
        __run ;;
    search)
        __search ;;
    start)
        __start ;;
    stop)
        __stop ;;
    tag)
        __tag ;;
    version)
        __version ;;
    wait)
        __wait ;;
esac