import asyncio
import inspect
import os
import pytest

from sanic import Sanic
from sanic.blueprints import Blueprint
from sanic.response import json, text
from sanic.exceptions import NotFound, ServerError, InvalidUsage
from sanic.constants import HTTP_METHODS


# ------------------------------------------------------------ #
#  GET
# ------------------------------------------------------------ #

def get_file_path(static_file_directory, file_name):
    return os.path.join(static_file_directory, file_name)

def get_file_content(static_file_directory, file_name):
    """The content of the static file to check"""
    with open(get_file_path(static_file_directory, file_name), 'rb') as file:
        return file.read()

@pytest.mark.parametrize('method', HTTP_METHODS)
def test_versioned_routes_get(method):
    app = Sanic('test_shorhand_routes_get')
    bp = Blueprint('test_text')

    method = method.lower()

    func = getattr(bp, method)
    if callable(func):
        @func('/{}'.format(method), version=1)
        def handler(request):
            return text('OK')
    else:
        print(func)
        raise

    app.blueprint(bp)

    client_method = getattr(app.test_client, method)

    request, response = client_method('/v1/{}'.format(method))
    assert response.status == 200


def test_bp():
    app = Sanic('test_text')
    bp = Blueprint('test_text')

    @bp.route('/')
    def handler(request):
        return text('Hello')

    app.blueprint(bp)
    request, response = app.test_client.get('/')
    assert app.is_request_stream is False

    assert response.text == 'Hello'

def test_bp_strict_slash():
    app = Sanic('test_route_strict_slash')
    bp = Blueprint('test_text')

    @bp.get('/get', strict_slashes=True)
    def handler(request):
        return text('OK')

    @bp.post('/post/', strict_slashes=True)
    def handler(request):
        return text('OK')

    app.blueprint(bp)

    request, response = app.test_client.get('/get')
    assert response.text == 'OK'
    assert response.json == None

    request, response = app.test_client.get('/get/')
    assert response.status == 404

    request, response = app.test_client.post('/post/')
    assert response.text == 'OK'

    request, response = app.test_client.post('/post')
    assert response.status == 404

def test_bp_strict_slash_default_value():
    app = Sanic('test_route_strict_slash')
    bp = Blueprint('test_text', strict_slashes=True)

    @bp.get('/get')
    def handler(request):
        return text('OK')

    @bp.post('/post/')
    def handler(request):
        return text('OK')

    app.blueprint(bp)

    request, response = app.test_client.get('/get/')
    assert response.status == 404

    request, response = app.test_client.post('/post')
    assert response.status == 404

def test_bp_strict_slash_without_passing_default_value():
    app = Sanic('test_route_strict_slash')
    bp = Blueprint('test_text')

    @bp.get('/get')
    def handler(request):
        return text('OK')

    @bp.post('/post/')
    def handler(request):
        return text('OK')

    app.blueprint(bp)

    request, response = app.test_client.get('/get/')
    assert response.text == 'OK'

    request, response = app.test_client.post('/post')
    assert response.text == 'OK'

def test_bp_strict_slash_default_value_can_be_overwritten():
    app = Sanic('test_route_strict_slash')
    bp = Blueprint('test_text', strict_slashes=True)

    @bp.get('/get', strict_slashes=False)
    def handler(request):
        return text('OK')

    @bp.post('/post/', strict_slashes=False)
    def handler(request):
        return text('OK')

    app.blueprint(bp)

    request, response = app.test_client.get('/get/')
    assert response.text == 'OK'

    request, response = app.test_client.post('/post')
    assert response.text == 'OK'

def test_bp_with_url_prefix():
    app = Sanic('test_text')
    bp = Blueprint('test_text', url_prefix='/test1')

    @bp.route('/')
    def handler(request):
        return text('Hello')

    app.blueprint(bp)
    request, response = app.test_client.get('/test1/')

    assert response.text == 'Hello'


def test_several_bp_with_url_prefix():
    app = Sanic('test_text')
    bp = Blueprint('test_text', url_prefix='/test1')
    bp2 = Blueprint('test_text2', url_prefix='/test2')

    @bp.route('/')
    def handler(request):
        return text('Hello')

    @bp2.route('/')
    def handler2(request):
        return text('Hello2')

    app.blueprint(bp)
    app.blueprint(bp2)
    request, response = app.test_client.get('/test1/')
    assert response.text == 'Hello'

    request, response = app.test_client.get('/test2/')
    assert response.text == 'Hello2'

def test_bp_with_host():
    app = Sanic('test_bp_host')
    bp = Blueprint('test_bp_host', url_prefix='/test1', host="example.com")

    @bp.route('/')
    def handler(request):
        return text('Hello')

    @bp.route('/', host="sub.example.com")
    def handler(request):
        return text('Hello subdomain!')

    app.blueprint(bp)
    headers = {"Host": "example.com"}
    request, response = app.test_client.get(
        '/test1/',
        headers=headers)
    assert response.text == 'Hello'

    headers = {"Host": "sub.example.com"}
    request, response = app.test_client.get(
        '/test1/',
        headers=headers)

    assert response.text == 'Hello subdomain!'


def test_several_bp_with_host():
    app = Sanic('test_text')
    bp = Blueprint('test_text',
                   url_prefix='/test',
                   host="example.com")
    bp2 = Blueprint('test_text2',
                    url_prefix='/test',
                    host="sub.example.com")

    @bp.route('/')
    def handler(request):
        return text('Hello')

    @bp2.route('/')
    def handler2(request):
        return text('Hello2')

    @bp2.route('/other/')
    def handler2(request):
        return text('Hello3')


    app.blueprint(bp)
    app.blueprint(bp2)

    assert bp.host == "example.com"
    headers = {"Host": "example.com"}
    request, response = app.test_client.get(
        '/test/',
        headers=headers)
    assert response.text == 'Hello'

    assert bp2.host == "sub.example.com"
    headers = {"Host": "sub.example.com"}
    request, response = app.test_client.get(
        '/test/',
        headers=headers)

    assert response.text == 'Hello2'
    request, response = app.test_client.get(
        '/test/other/',
        headers=headers)
    assert response.text == 'Hello3'

def test_bp_middleware():
    app = Sanic('test_middleware')
    blueprint = Blueprint('test_middleware')

    @blueprint.middleware('response')
    async def process_response(request, response):
        return text('OK')

    @app.route('/')
    async def handler(request):
        return text('FAIL')

    app.blueprint(blueprint)

    request, response = app.test_client.get('/')

    assert response.status == 200
    assert response.text == 'OK'

def test_bp_exception_handler():
    app = Sanic('test_middleware')
    blueprint = Blueprint('test_middleware')

    @blueprint.route('/1')
    def handler_1(request):
        raise InvalidUsage("OK")

    @blueprint.route('/2')
    def handler_2(request):
        raise ServerError("OK")

    @blueprint.route('/3')
    def handler_3(request):
        raise NotFound("OK")

    @blueprint.exception(NotFound, ServerError)
    def handler_exception(request, exception):
        return text("OK")

    app.blueprint(blueprint)

    request, response = app.test_client.get('/1')
    assert response.status == 400


    request, response = app.test_client.get('/2')
    assert response.status == 200
    assert response.text == 'OK'

    request, response = app.test_client.get('/3')
    assert response.status == 200

def test_bp_listeners():
    app = Sanic('test_middleware')
    blueprint = Blueprint('test_middleware')

    order = []

    @blueprint.listener('before_server_start')
    def handler_1(sanic, loop):
        order.append(1)

    @blueprint.listener('after_server_start')
    def handler_2(sanic, loop):
        order.append(2)

    @blueprint.listener('after_server_start')
    def handler_3(sanic, loop):
        order.append(3)

    @blueprint.listener('before_server_stop')
    def handler_4(sanic, loop):
        order.append(5)

    @blueprint.listener('before_server_stop')
    def handler_5(sanic, loop):
        order.append(4)

    @blueprint.listener('after_server_stop')
    def handler_6(sanic, loop):
        order.append(6)

    app.blueprint(blueprint)

    request, response = app.test_client.get('/')

    assert order == [1,2,3,4,5,6]

def test_bp_static():
    current_file = inspect.getfile(inspect.currentframe())
    with open(current_file, 'rb') as file:
        current_file_contents = file.read()

    app = Sanic('test_static')
    blueprint = Blueprint('test_static')

    blueprint.static('/testing.file', current_file)

    app.blueprint(blueprint)

    request, response = app.test_client.get('/testing.file')
    assert response.status == 200
    assert response.body == current_file_contents

@pytest.mark.parametrize('file_name', ['test.html'])
def test_bp_static_content_type(file_name):
    # This is done here, since no other test loads a file here
    current_file = inspect.getfile(inspect.currentframe())
    current_directory = os.path.dirname(os.path.abspath(current_file))
    static_directory = os.path.join(current_directory, 'static')

    app = Sanic('test_static')
    blueprint = Blueprint('test_static')
    blueprint.static(
        '/testing.file',
        get_file_path(static_directory, file_name),
        content_type='text/html; charset=utf-8'
    )

    app.blueprint(blueprint)

    request, response = app.test_client.get('/testing.file')
    assert response.status == 200
    assert response.body == get_file_content(static_directory, file_name)
    assert response.headers['Content-Type'] == 'text/html; charset=utf-8'

def test_bp_shorthand():
    app = Sanic('test_shorhand_routes')
    blueprint = Blueprint('test_shorhand_routes')
    ev = asyncio.Event()

    @blueprint.get('/get')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.put('/put')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.post('/post')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.head('/head')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.options('/options')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.patch('/patch')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.delete('/delete')
    def handler(request):
        assert request.stream is None
        return text('OK')

    @blueprint.websocket('/ws')
    async def handler(request, ws):
        assert request.stream is None
        ev.set()

    app.blueprint(blueprint)

    assert app.is_request_stream is False

    request, response = app.test_client.get('/get')
    assert response.text == 'OK'

    request, response = app.test_client.post('/get')
    assert response.status == 405

    request, response = app.test_client.put('/put')
    assert response.text == 'OK'

    request, response = app.test_client.get('/post')
    assert response.status == 405

    request, response = app.test_client.post('/post')
    assert response.text == 'OK'

    request, response = app.test_client.get('/post')
    assert response.status == 405

    request, response = app.test_client.head('/head')
    assert response.status == 200

    request, response = app.test_client.get('/head')
    assert response.status == 405

    request, response = app.test_client.options('/options')
    assert response.text == 'OK'

    request, response = app.test_client.get('/options')
    assert response.status == 405

    request, response = app.test_client.patch('/patch')
    assert response.text == 'OK'

    request, response = app.test_client.get('/patch')
    assert response.status == 405

    request, response = app.test_client.delete('/delete')
    assert response.text == 'OK'

    request, response = app.test_client.get('/delete')
    assert response.status == 405

    request, response = app.test_client.get('/ws', headers={
        'Upgrade': 'websocket',
        'Connection': 'upgrade',
        'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
        'Sec-WebSocket-Version': '13'})
    assert response.status == 101
    assert ev.is_set()

def test_bp_group():
    app = Sanic('test_nested_bp_groups')

    deep_0 = Blueprint('deep_0', url_prefix='/deep')
    deep_1 = Blueprint('deep_1', url_prefix = '/deep1')

    @deep_0.route('/')
    def handler(request):
        return text('D0_OK')

    @deep_1.route('/bottom')
    def handler(request):
        return text('D1B_OK')

    mid_0 = Blueprint.group(deep_0, deep_1, url_prefix='/mid')
    mid_1 = Blueprint('mid_tier', url_prefix='/mid1')

    @mid_1.route('/')
    def handler(request):
        return text('M1_OK')

    top = Blueprint.group(mid_0, mid_1)

    app.blueprint(top)

    @app.route('/')
    def handler(request):
        return text('TOP_OK')

    request, response = app.test_client.get('/')
    assert response.text == 'TOP_OK'

    request, response = app.test_client.get('/mid1')
    assert response.text == 'M1_OK'

    request, response = app.test_client.get('/mid/deep')
    assert response.text == 'D0_OK'

    request, response = app.test_client.get('/mid/deep1/bottom')
    assert response.text == 'D1B_OK'