from datetime import datetime
from dvrip import DVRIPCam

from nvr_types import File as NvrFile
from nvr_types import list_local_files
from nvr_types import PRIMARY_STREAM, SECONDARY_STREAM
from nvr_types import H264

START = "2024-08-04 6:22:34"
END = "2024-08-04 23:23:09"
CHANNEL = 0

def date_today(begin = True):
    if begin:
        return datetime.now().strftime("%Y-%m-%d 00:00:00")
    else:
        return datetime.now().strftime("%Y-%m-%d 23:59:59")

class NVR:
    def __init__(self, client) -> None:
        self.client:DVRIPCam = client

    def login(self):
        self.client.login()

    def logout(self):
        self.client.close()

    @property
    def channels(self):
        return self.client.get_channel_titles()

    def files(self, channel, start = None, end = None, ftype = H264, stype = SECONDARY_STREAM, json = False):
        if not start:
            start = date_today()
        if not end:
            end = date_today(False)
        print("Search files", start, end)
        for raw_file in list_local_files(self.client, startTime=start, endTime=end, filetype=ftype, channel=channel, streamType=stype):
            if json:
                yield NvrFile(raw_file, channel, stype).json
            else:
                yield NvrFile(raw_file, channel, stype)

    def stream_file(self, file: NvrFile):
        return file.generate_bytes(self.client)

    def save_file(self, file:NvrFile, savePath = "out.unknown"):
        downloaded_bytes = 0
        with open(savePath, "wb") as f:
            for byte in file.generate_bytes(self.client):
                f.write(byte)
                downloaded_bytes += len(byte)
                print("\r", downloaded_bytes, "/", file.size)

    def download_test(self, filename = "testfile.unknown"):
        download_file = list(self.files(0))[0]
        downloaded_bytes = 0
        #with open(filename, "wb") as f:
        #    for byte in download_file.download_stream(self.client):
        #        downloaded_bytes += len(byte)
        #        f.write(byte)
        #        print("\r", downloaded_bytes, "/", download_file.size)