#!/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
import re
import os
import time

import ttfw_idf
import esp_prov

# Have esp_prov throw exception
esp_prov.config_throw_except = True


@ttfw_idf.idf_example_test(env_tag="Example_WIFI_BT")
def test_examples_wifi_prov_mgr(env, extra_data):
    # Acquire DUT
    dut1 = env.get_dut("wifi_prov_mgr", "examples/provisioning/wifi_prov_mgr", dut_class=ttfw_idf.ESP32DUT)

    # Get binary file
    binary_file = os.path.join(dut1.app.binary_path, "wifi_prov_mgr.bin")
    bin_size = os.path.getsize(binary_file)
    ttfw_idf.log_performance("wifi_prov_mgr_bin_size", "{}KB".format(bin_size // 1024))
    ttfw_idf.check_performance("wifi_prov_mgr_bin_size", bin_size // 1024, dut1.TARGET)

    # Upload binary and start testing
    dut1.start_app()

    # Check if BT memory is released before provisioning starts
    dut1.expect("wifi_prov_scheme_ble: BT memory released", timeout=60)

    # Parse BLE devname
    devname = dut1.expect(re.compile(r"Provisioning started with service name : (PROV_\S\S\S\S\S\S)"), timeout=30)[0]
    print("BLE Device Alias for DUT :", devname)

    print("Starting Provisioning")
    verbose = False
    protover = "v1.1"
    secver = 1
    pop = "abcd1234"
    provmode = "ble"
    ap_ssid = "myssid"
    ap_password = "mypassword"

    print("Getting security")
    security = esp_prov.get_security(secver, pop, verbose)
    if security is None:
        raise RuntimeError("Failed to get security")

    print("Getting transport")
    transport = esp_prov.get_transport(provmode, devname)
    if transport is None:
        raise RuntimeError("Failed to get transport")

    print("Verifying protocol version")
    if not esp_prov.version_match(transport, protover):
        raise RuntimeError("Mismatch in protocol version")

    print("Verifying scan list capability")
    if not esp_prov.has_capability(transport, 'wifi_scan'):
        raise RuntimeError("Capability not present")

    print("Starting Session")
    if not esp_prov.establish_session(transport, security):
        raise RuntimeError("Failed to start session")

    print("Sending Custom Data")
    if not esp_prov.custom_data(transport, security, "My Custom Data"):
        raise RuntimeError("Failed to send custom data")

    print("Sending Wifi credential to DUT")
    if not esp_prov.send_wifi_config(transport, security, ap_ssid, ap_password):
        raise RuntimeError("Failed to send Wi-Fi config")

    print("Applying config")
    if not esp_prov.apply_wifi_config(transport, security):
        raise RuntimeError("Failed to send apply config")

    success = False
    retry = 0
    while True:
        time.sleep(5)
        print("Wi-Fi connection state")
        ret = esp_prov.get_wifi_config(transport, security)
        if (ret == "connecting"):
            continue
        elif (ret == "connected"):
            print("Provisioning was successful")
            success = True
        elif (ret == "failed" and retry < 3):
            retry = retry + 1
            print("Connection failed.. retry again...: ", ret)
            continue
        break

    if not success:
        raise RuntimeError("Provisioning failed")

    # Check if BTDM memory is released after provisioning finishes
    dut1.expect("wifi_prov_scheme_ble: BTDM memory released", timeout=30)


if __name__ == '__main__':
    test_examples_wifi_prov_mgr()