# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.conf import settings
from docker import DockerClient
from docker.errors import DockerException, NotFound, APIError, ContainerError, ImageNotFound
import time
import tarfile as tar
from io import BytesIO

'''
'''
def get_docker_client():
    try:
        return DockerClient(base_url='unix:/%s' % settings.DOCKER_SOCK_DIR)
    except DockerException:
        return None

'''
'''
def get_all_images():
    client = get_docker_client()

    images = []

    if not client:
        return images

    for image in client.images.list():
        images.append({
            'id': image.id,
            'short_id': image.short_id,
            'tags': image.tags
        })

    return images

'''
'''
def get_all_containers():
    client = get_docker_client()

    containers = []

    if not client:
        return containers

    for container in client.containers.list(all=True):
        containers.append({
            'id': container.id,
            'short_id': container.short_id,
            'name': container.name,
            'image': container.image,
            'labels': container.labels,
            'status': container.status,
            'attrs': container.attrs
        })
        
    return containers

'''
'''
def run_container(image=None, name=None, ports=[], volumes=None, net=None):
    if not name:
        return False

    client = get_docker_client()

    if not client:
        return False

    try:
        client.containers.run(image, None, name=name, detach=True, ports=ports, volumes=volumes, network=net)
        return True
    except (ContainerError, ImageNotFound, APIError):
        return False

'''
'''
def start_container(id=None):
    if not id:
        return None

    client = get_docker_client()

    if not client:
        return None

    try:
        container = client.containers.get(id)
        container.start()

        time.sleep(1)

        container.reload()

        return {
            'id': container.id,
            'short_id': container.short_id,
            'name': container.name,
            'image': container.image,
            'labels': container.labels,
            'status': container.status
        }
    except (NotFound, APIError):
        return None

'''
'''
def restart_container(id=None):
    if not id:
        return None

    client = get_docker_client()

    if not client:
        return None

    try:
        container = client.containers.get(id)
        container.restart()

        time.sleep(1)

        container.reload()

        return {
            'id': container.id,
            'short_id': container.short_id,
            'name': container.name,
            'image': container.image,
            'labels': container.labels,
            'status': container.status
        }
    except (NotFound, APIError):
        return None

'''
'''
def stop_container(id=None):
    if not id:
        return None

    client = get_docker_client()

    if not client:
        return None

    try:
        container = client.containers.get(id)
        container.stop()

        time.sleep(1)

        container.reload()

        return {
            'id': container.id,
            'short_id': container.short_id,
            'name': container.name,
            'image': container.image,
            'labels': container.labels,
            'status': container.status
        }
    except (NotFound, APIError):
        return None

'''
'''
def execute_command(container_id_or_name=None, command=None):
    if not container_id_or_name or not command:
        return None

    client = get_docker_client()

    if not client:
        return None

    try:
        container = client.containers.get(container_id_or_name)
        (exit_code, unused_output) = container.exec_run(command)
        return (False, True)[exit_code == 0]
    except (NotFound, APIError):
        return None

'''
'''
def copy_in(container_id_or_name=None, path=None, tarfile=None):
    if not container_id_or_name or not path or not tarfile:
        return False

    client = get_docker_client()

    if not client:
        return False

    try:
        file = open(tarfile, 'r')
        container = client.containers.get(container_id_or_name)
        result = container.put_archive(path, file)
        file.close()
        return result
    except (NotFound, APIError, IOError):
        return False