import json
import logging
import os
import socket
from time import sleep

import pytest
import requests

from errbot.backends.test import FullStackTest, testbot

log = logging.getLogger(__name__)

PYTHONOBJECT = ["foo", {"bar": ("baz", None, 1.0, 2)}]
JSONOBJECT = json.dumps(PYTHONOBJECT)
# Webserver port is picked based on the process ID so that when tests
# are run in parallel with pytest-xdist, each process runs the server
# on a different port
WEBSERVER_PORT = 5000 + (os.getpid() % 1000)
WEBSERVER_SSL_PORT = WEBSERVER_PORT + 1000


def webserver_ready(host, port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        s.connect((host, port))
        s.shutdown(socket.SHUT_RDWR)
        s.close()
        return True
    except Exception:
        return False


extra_plugin_dir = os.path.join(
    os.path.dirname(os.path.realpath(__file__)), "webhooks_plugin"
)


def wait_for_server(port: int):
    failure_count = 10
    while not webserver_ready("localhost", port):
        waiting_time = 1.0 / failure_count
        log.info("Webserver not ready yet, sleeping for %f second.", waiting_time)
        sleep(waiting_time)
        failure_count -= 1
        if failure_count == 0:
            raise TimeoutError("Could not start the internal Webserver to test.")


@pytest.fixture
def webhook_testbot(request, testbot):
    testbot.push_message(
        "!plugin config Webserver {'HOST': 'localhost', 'PORT': %s, 'SSL': None}"
        % WEBSERVER_PORT
    )
    log.info(testbot.pop_message())
    wait_for_server(WEBSERVER_PORT)
    return testbot


def test_not_configured_url_returns_404(webhook_testbot):
    assert (
        requests.post(
            "http://localhost:{}/randomness_blah".format(WEBSERVER_PORT),
            "{'toto': 'titui'}",
        ).status_code
        == 404
    )


def test_webserver_plugin_ok(webhook_testbot):
    assert "/echo" in webhook_testbot.exec_command("!webstatus")


def test_trailing_no_slash_ok(webhook_testbot):
    assert requests.post(
        "http://localhost:{}/echo".format(WEBSERVER_PORT), JSONOBJECT
    ).text == repr(json.loads(JSONOBJECT))


def test_trailing_slash_also_ok(webhook_testbot):
    assert requests.post(
        "http://localhost:{}/echo/".format(WEBSERVER_PORT), JSONOBJECT
    ).text == repr(json.loads(JSONOBJECT))


def test_json_is_automatically_decoded(webhook_testbot):
    assert requests.post(
        "http://localhost:{}/webhook1".format(WEBSERVER_PORT), JSONOBJECT
    ).text == repr(json.loads(JSONOBJECT))


def test_json_on_custom_url_is_automatically_decoded(webhook_testbot):
    assert requests.post(
        "http://localhost:{}/custom_webhook".format(WEBSERVER_PORT), JSONOBJECT
    ).text == repr(json.loads(JSONOBJECT))


def test_post_form_on_webhook_without_form_param_is_automatically_decoded(
    webhook_testbot,
):
    assert requests.post(
        "http://localhost:{}/webhook1".format(WEBSERVER_PORT), data=JSONOBJECT
    ).text == repr(json.loads(JSONOBJECT))


def test_post_form_on_webhook_with_custom_url_and_without_form_param_is_automatically_decoded(
    webhook_testbot,
):
    assert requests.post(
        "http://localhost:{}/custom_webhook".format(WEBSERVER_PORT), data=JSONOBJECT
    ).text == repr(json.loads(JSONOBJECT))


def test_webhooks_with_form_parameter_decode_json_automatically(webhook_testbot):
    form = {"form": JSONOBJECT}
    assert requests.post(
        "http://localhost:{}/form".format(WEBSERVER_PORT), data=form
    ).text == repr(json.loads(JSONOBJECT))


def test_webhooks_with_form_parameter_on_custom_url_decode_json_automatically(
    webhook_testbot,
):
    form = {"form": JSONOBJECT}
    assert requests.post(
        "http://localhost:{}/custom_form".format(WEBSERVER_PORT), data=form
    ).text, repr(json.loads(JSONOBJECT))


def test_webhooks_with_raw_request(webhook_testbot):
    form = {"form": JSONOBJECT}
    assert (
        "LocalProxy"
        in requests.post(
            "http://localhost:{}/raw".format(WEBSERVER_PORT), data=form
        ).text
    )


def test_webhooks_with_naked_decorator_raw_request(webhook_testbot):
    form = {"form": JSONOBJECT}
    assert (
        "LocalProxy"
        in requests.post(
            "http://localhost:{}/raw2".format(WEBSERVER_PORT), data=form
        ).text
    )


def test_generate_certificate_creates_usable_cert(webhook_testbot):
    d = webhook_testbot.bot.bot_config.BOT_DATA_DIR
    key_path = os.sep.join((d, "webserver_key.pem"))
    cert_path = os.sep.join((d, "webserver_certificate.pem"))

    assert "Generating" in webhook_testbot.exec_command(
        "!generate_certificate", timeout=1
    )

    # Generating a certificate could be slow on weak hardware, so keep a safe
    # timeout on the first pop_message()
    assert "successfully generated" in webhook_testbot.pop_message(timeout=60)
    assert "is recommended" in webhook_testbot.pop_message(timeout=1)
    assert key_path in webhook_testbot.pop_message(timeout=1)

    webserver_config = {
        "HOST": "localhost",
        "PORT": WEBSERVER_PORT,
        "SSL": {
            "certificate": cert_path,
            "key": key_path,
            "host": "localhost",
            "port": WEBSERVER_SSL_PORT,
            "enabled": True,
        },
    }
    webhook_testbot.push_message(
        "!plugin config Webserver {!r}".format(webserver_config)
    )
    assert "Plugin configuration done." in webhook_testbot.pop_message(timeout=2)

    wait_for_server(WEBSERVER_SSL_PORT)

    requests.packages.urllib3.disable_warnings(
        requests.packages.urllib3.exceptions.InsecureRequestWarning
    )

    assert requests.post(
        "https://localhost:{}/webhook1".format(WEBSERVER_SSL_PORT),
        JSONOBJECT,
        verify=False,
    ).text == repr(json.loads(JSONOBJECT))


def test_custom_headers_and_status_codes(webhook_testbot):
    assert (
        requests.post("http://localhost:{}/webhook6".format(WEBSERVER_PORT)).headers[
            "X-Powered-By"
        ]
        == "Errbot"
    )

    assert (
        requests.post("http://localhost:{}/webhook7".format(WEBSERVER_PORT)).status_code
        == 403
    )


def test_lambda_webhook(webhook_testbot):
    assert (
        requests.post("http://localhost:{}/lambda".format(WEBSERVER_PORT)).status_code
        == 200
    )