import network
import urequests
import time
import usocket
import socket
import ssl

# global variable for the IP-Adress of the laptop hotspot
IP_ADRESS_SERVER:str = '192.168.0.100' #None
IP_ADRESS_ACCESSPOINT = None
SERVER_PORT:int = 3000 #None

# configures the raspberry pi as wifi-client and connects it to an access point
def wifi_connect(SSID:str, PASSWORD:str) -> None:

    # configure raspberry pi as client
    wifi = network.WLAN(network.STA_IF)
    # activate client
    wifi.active(True)
    # connect to laptop hotspot
    wifi.connect(SSID, PASSWORD)

    # wait until it has connected
    while not wifi.isconnected():
        print("Connect to", SSID, "...")
        time.sleep(1)

    # connected to laptop hotspot
    print("Connected to", SSID)
    # geat and print IP-adress of raspberry
    ip_adress_pico = wifi.ifconfig()[0]
    print("IP-Adresse Pico:", ip_adress_pico)
    # get ip-adress of access point and store it in the global variable
    global IP_ADRESS_ACCESSPOINT
    IP_ADRESS_ACCESSPOINT = wifi.ifconfig()[2]
    print("IP-adress access point:", IP_ADRESS_ACCESSPOINT)
    print()



# send a HTTP-request to the access point with the rate value
def send_request(rate_value:int) -> None:

    # create HTTP-URL
    URL = f"http://{IP_ADRESS_SERVER}:{str(SERVER_PORT)}/rating/{rate_value}"
    print(URL)

    # create request
    response = urequests.get(URL)

    # print HTTP-answer of the access point
    print("Server response:")
    print(response.text)  # Die Antwort des Servers anzeigen
    print()
    response.close()


# test, if there can be a connection to the given ip adress and port
def ping_ip(ip:str, port:int) -> bool:
    s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
    s.settimeout(1)
    try:
        s.connect((ip, port)) 
        print(f"{ip} reachable")
        s.close()
        return True
    except:
        print(f"{ip} not reachable")
        s.close()
        return False


# search for the server in the lokal network
# in the ip range from lower_limit to upper_limit
def search_server(lower_limit:int, upper_limit:int, port:int) -> str:
    global IP_ADRESS_SERVER
    for i in range(lower_limit, upper_limit):  
        ip = IP_ADRESS_ACCESSPOINT[:-1] + str(i)
        if ping_ip(ip, port):
            print(f"Server found unter: {ip}:{port}")
            IP_ADRESS_SERVER = ip 
            return ip