#!/usr/bin/env python
#
# Copyright 2018 Espressif Systems (Shanghai) PTE LTD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import print_function
from __future__ import unicode_literals
from builtins import str
import http.client
import argparse
import Utility


def verbose_print(verbosity, *args):
    if (verbosity):
        Utility.console_log(''.join(str(elems) for elems in args))


def test_get_handler(ip, port, verbosity=False):
    verbose_print(verbosity, "========  GET HANDLER TEST =============")
    # Establish HTTP connection
    verbose_print(verbosity, "Connecting to => " + ip + ":" + port)
    sess = http.client.HTTPConnection(ip + ":" + port, timeout=15)

    uri = "/hello?query1=value1&query2=value2&query3=value3"
    # GET hello response
    test_headers = {"Test-Header-1":"Test-Value-1", "Test-Header-2":"Test-Value-2"}
    verbose_print(verbosity, "Sending GET to URI : ", uri)
    verbose_print(verbosity, "Sending additional headers : ")
    for k, v in test_headers.items():
        verbose_print(verbosity, "\t", k, ": ", v)
    sess.request("GET", url=uri, headers=test_headers)
    resp = sess.getresponse()
    resp_hdrs = resp.getheaders()
    resp_data = resp.read().decode()
    try:
        if resp.getheader("Custom-Header-1") != "Custom-Value-1":
            return False
        if resp.getheader("Custom-Header-2") != "Custom-Value-2":
            return False
    except Exception:
        return False

    verbose_print(verbosity, "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv")
    verbose_print(verbosity, "Server response to GET /hello")
    verbose_print(verbosity, "Response Headers : ")
    for k, v in resp_hdrs:
        verbose_print(verbosity, "\t", k, ": ", v)
    verbose_print(verbosity, "Response Data : " + resp_data)
    verbose_print(verbosity, "========================================\n")

    # Close HTTP connection
    sess.close()
    return (resp_data == "Hello World!")


def test_post_handler(ip, port, msg, verbosity=False):
    verbose_print(verbosity, "========  POST HANDLER TEST ============")
    # Establish HTTP connection
    verbose_print(verbosity, "Connecting to => " + ip + ":" + port)
    sess = http.client.HTTPConnection(ip + ":" + port, timeout=15)

    # POST message to /echo and get back response
    sess.request("POST", url="/echo", body=msg)
    resp = sess.getresponse()
    resp_data = resp.read().decode()
    verbose_print(verbosity, "Server response to POST /echo (" + msg + ")")
    verbose_print(verbosity, "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv")
    verbose_print(verbosity, resp_data)
    verbose_print(verbosity, "========================================\n")

    # Close HTTP connection
    sess.close()
    return (resp_data == msg)


def test_put_handler(ip, port, verbosity=False):
    verbose_print(verbosity, "========  PUT HANDLER TEST =============")
    # Establish HTTP connection
    verbose_print(verbosity, "Connecting to => " + ip + ":" + port)
    sess = http.client.HTTPConnection(ip + ":" + port, timeout=15)

    # PUT message to /ctrl to disable /hello URI handler
    verbose_print(verbosity, "Disabling /hello handler")
    sess.request("PUT", url="/ctrl", body="0")
    resp = sess.getresponse()
    resp.read()

    sess.request("GET", url="/hello")
    resp = sess.getresponse()
    resp_data1 = resp.read().decode()
    verbose_print(verbosity, "Response on GET /hello : " + resp_data1)

    # PUT message to /ctrl to enable /hello URI handler
    verbose_print(verbosity, "Enabling /hello handler")
    sess.request("PUT", url="/ctrl", body="1")
    resp = sess.getresponse()
    resp.read()

    sess.request("GET", url="/hello")
    resp = sess.getresponse()
    resp_data2 = resp.read().decode()
    verbose_print(verbosity, "Response on GET /hello : " + resp_data2)

    # Close HTTP connection
    sess.close()
    return ((resp_data2 == "Hello World!") and (resp_data1 == "This URI doesn't exist"))


def test_custom_uri_query(ip, port, query, verbosity=False):
    verbose_print(verbosity, "========  GET HANDLER TEST =============")
    # Establish HTTP connection
    verbose_print(verbosity, "Connecting to => " + ip + ":" + port)
    sess = http.client.HTTPConnection(ip + ":" + port, timeout=15)

    uri = "/hello?" + query
    # GET hello response
    verbose_print(verbosity, "Sending GET to URI : ", uri)
    sess.request("GET", url=uri, headers={})
    resp = sess.getresponse()
    resp_data = resp.read().decode()

    verbose_print(verbosity, "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv")
    verbose_print(verbosity, "Server response to GET /hello")
    verbose_print(verbosity, "Response Data : " + resp_data)
    verbose_print(verbosity, "========================================\n")

    # Close HTTP connection
    sess.close()
    return (resp_data == "Hello World!")


if __name__ == '__main__':
    # Configure argument parser
    parser = argparse.ArgumentParser(description='Run HTTPd Test')
    parser.add_argument('IP',   metavar='IP',      type=str, help='Server IP')
    parser.add_argument('port', metavar='port',    type=str, help='Server port')
    parser.add_argument('msg',  metavar='message', type=str, help='Message to be sent to server')
    args = vars(parser.parse_args())

    # Get arguments
    ip   = args['IP']
    port = args['port']
    msg  = args['msg']

    if not test_get_handler(ip, port, True):
        Utility.console_log("Failed!")
    if not test_post_handler(ip, port, msg, True):
        Utility.console_log("Failed!")
    if not test_put_handler(ip, port, True):
        Utility.console_log("Failed!")
