import os, sys
from json import loads
from dvrip import DVRIPCam
from nvr_core import NVR

def app_dir():
    return os.path.dirname(os.path.abspath(__file__))

def load_config():
    try:
        path = os.path.join(app_dir(),"config.json")
        print("Looking config file", path)
        with open(path, "r", encoding="utf8") as f:
            return loads(f.read())
    except Exception as e:
        print("cannot find or parse config.json", e)
        sys.exit(1)       

class Recorder:
    def __init__(self, address, port, username, password):
        self.address = address
        self.port = int(port)
        self.username = username
        self.password = password

    @property
    def client(self) -> DVRIPCam:
        return DVRIPCam(self.address, port = self.port, user = self.username, password = self.password)

    @property
    def nvr(self) -> NVR:
        return NVR(self.client)

    def __str__(self) -> str:
        return f"{self.address}:{self.port}"

class Config:
    def __init__(self) -> None:
        raw = load_config()
        self.listen_address = raw.get("backend", {}).get("address", "0.0.0.0")
        self.listen_port = int(raw.get("backend", {}).get("port", "8080"))
        self.recorders = []
        for raw_server in raw.get("recorders", []):
            self.recorders.append(Recorder(raw_server.get("ip"), raw_server.get("port"), raw_server.get("user"), raw_server.get("password")))
        if (self.recorders.__len__() == 0):
            print("Recorders not find")
        else:
            for recorder in self.recorders:
                print(recorder)

    def getRecorder(self, index = 0):
        return self.recorders[index]

if __name__ == "__main__":
    print(app_dir())
    config = Config()
    recorder: Recorder = config.getRecorder()
    nvr: NVR = recorder.nvr
    nvr.login()
    print(nvr.download_test())
    nvr.logout()

    #client: DVRIPCam = recorder.client
    #client.debug()
    #if not client.login():
    #    print("can't login")
    #    sys.exit(2)
    #print(client.get_system_info())
    #print(client.get_channel_titles())
    #print(client.get_channel_statuses())
    #print(client.list_local_files(START, END, "h264", channel=3))
    #client.close()