from typing import Dict, Any, Optional, Iterable
import os
import ujson

if False:
    from zulip import Client

ZULIP_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
FIXTURE_PATH = os.path.join(ZULIP_DIR, 'templates', 'zerver', 'api', 'fixtures.json')

def load_api_fixtures():
    # type: () -> Dict[str, Any]
    with open(FIXTURE_PATH, 'r') as fp:
        json_dict = ujson.loads(fp.read())
        return json_dict

FIXTURES = load_api_fixtures()

def add_subscriptions(client):
    # type: (Client) -> None

    request = [
        dict(
            name='new stream',
            description='New stream for testing',
        )
    ]
    result = client.add_subscriptions(request)
    assert result['result'] == 'success'

def create_user(client):
    # type: (Client) -> None

    request = dict(
        email='newbie@zulip.com',
        full_name='New User',
        short_name='Newbie',
        password='temp',
    )
    result = client.create_user(request)
    assert result['result'] == 'success'

def get_members(client):
    # type: (Client) -> None

    result = client.get_members()
    assert result['result'] == 'success'
    members = [m for m in result['members'] if m['email'] == 'newbie@zulip.com']
    assert len(members) == 1
    iago = members[0]

    assert not iago['is_admin']
    assert iago['full_name'] == 'New User'

def get_profile(client):
    # type: (Client) -> None

    result = client.get_profile()
    assert result['is_admin']
    assert result['email'] == 'iago@zulip.com'
    assert result['full_name'] == 'Iago'

def get_stream_id(client):
    # type: (Client) -> None

    stream_name = 'new stream'
    result = client.get_stream_id(stream_name)
    assert int(result['stream_id'])

def get_streams(client):
    # type: (Client) -> None

    result = client.get_streams()
    assert result['result'] == 'success'
    streams = [s for s in result['streams'] if s['name'] == 'new stream']
    assert streams[0]['description'] == 'New stream for testing'

def get_subscribers(client):
    # type: (Client) -> None

    result = client.get_subscribers(stream='new stream')
    assert result['subscribers'] == ['iago@zulip.com']

def get_user_agent(client):
    # type: (Client) -> None

    result = client.get_user_agent()
    assert result.startswith('ZulipPython/')

def list_subscriptions(client):
    # type: (Client) -> None

    result = client.list_subscriptions()
    assert result['result'] == 'success'
    streams = [s for s in result['subscriptions'] if s['name'] == 'new stream']
    assert streams[0]['description'] == 'New stream for testing'

def remove_subscriptions(client):
    # type: (Client) -> None

    result = client.remove_subscriptions(['new stream'])
    assert result['result'] == 'success'

    # test it was actually removed
    result = client.list_subscriptions()
    assert result['result'] == 'success'
    streams = [s for s in result['subscriptions'] if s['name'] == 'new stream']
    assert len(streams) == 0

def render_message(client):
    # type: (Client) -> None

    # {code_example|start}
    # Render a message
    request = {
        'content': '**foo**'
    }
    result = client.render_message(request)
    # {code_example|end}

    fixture = FIXTURES['render-message']
    test_against_fixture(result, fixture)

def stream_message(client):
    # type: (Client) -> int

    # {code_example|start}
    # Send a stream message
    request = {
        "type": "stream",
        "to": "Denmark",
        "subject": "Castle",
        "content": "Something is rotten in the state of Denmark."
    }
    result = client.send_message(request)
    # {code_example|end}

    fixture = FIXTURES['stream-message']
    test_against_fixture(result, fixture, check_if_equal=['result'],
                         check_if_exists=['id'])

    # test it was actually sent
    message_id = result['id']
    url = 'messages/' + str(message_id)
    result = client.call_endpoint(
        url=url,
        method='GET'
    )
    assert result['result'] == 'success'
    assert result['raw_content'] == request['content']

    return message_id

def private_message(client):
    # type: (Client) -> None

    # {code_example|start}
    # Send a private message
    request = {
        "type": "private",
        "to": "iago@zulip.com",
        "content": "I come not, friends, to steal away your hearts."
    }
    result = client.send_message(request)
    # {code_example|end}

    fixture = FIXTURES['private-message']
    test_against_fixture(result, fixture, check_if_equal=['result'],
                         check_if_exists=['id'])

    # test it was actually sent
    message_id = result['id']
    url = 'messages/' + str(message_id)
    result = client.call_endpoint(
        url=url,
        method='GET'
    )
    assert result['result'] == 'success'
    assert result['raw_content'] == request['content']

def update_message(client, message_id):
    # type: (Client, int) -> None

    assert int(message_id)

    # {code_example|start}
    # Edit a message
    # (make sure that message_id below is set to the ID of the
    # message you wish to update)
    request = {
        "message_id": message_id,
        "content": "New content"
    }
    result = client.update_message(request)
    # {code_example|end}

    fixture = FIXTURES['update-message']
    test_against_fixture(result, fixture)

    # test it was actually updated
    url = 'messages/' + str(message_id)
    result = client.call_endpoint(
        url=url,
        method='GET'
    )
    assert result['result'] == 'success'
    assert result['raw_content'] == request['content']

TEST_FUNCTIONS = {
    'render-message': render_message,
    'stream-message': stream_message,
    'private-message': private_message,
    'update-message': update_message,
}

# SETUP METHODS FOLLOW

def test_against_fixture(result, fixture, check_if_equal=[], check_if_exists=[]):
    # type: (Dict[str, Any], Dict[str, Any], Optional[Iterable[str]], Optional[Iterable[str]]) -> None
    assert len(result) == len(fixture)

    if not check_if_equal and not check_if_exists:
        for key, value in fixture.items():
            assert result[key] == fixture[key]

    if check_if_equal:
        for key in check_if_equal:
            assert result[key] == fixture[key]

    if check_if_exists:
        for key in check_if_exists:
            assert key in result

def test_messages(client):
    # type: (Client) -> None

    render_message(client)
    message_id = stream_message(client)
    update_message(client, message_id)
    private_message(client)

def test_users(client):
    # type: (Client) -> None

    create_user(client)
    get_members(client)
    get_profile(client)

def test_streams(client):
    # type: (Client) -> None

    add_subscriptions(client)
    list_subscriptions(client)
    get_stream_id(client)
    get_streams(client)
    get_subscribers(client)

def test_the_api(client):
    # type: (Client) -> None

    get_user_agent(client)
    test_users(client)
    test_streams(client)
    test_messages(client)

    # print(dir(client))