import time
import os
import shutil
import requests
import py7zr
from threading import Thread
from logger.logger import *

CHUNKSIZE = 1024


class Download_Theard(Thread):
    def __init__(self, url, to, progress_callback, onfinish):
        self.url = url
        self.to = to
        self.progress_callback = progress_callback
        self.onfinish = onfinish
        Thread.__init__(self, daemon=True)

    def run(self):
        while 1:
            try:
                info("[downloader]download "+self.url)
                self.progress_callback(0)
                r = requests.get(self.url, stream=True)
                if (r.status_code >= 300):
                    raise Exception
                total = int(r.headers.get('content-length', 0))
                now_file = 0
                with open(self.to, 'wb') as fp:
                    for item in r.iter_content(CHUNKSIZE):
                        fp.write(item)
                        now_file += len(item)
                        self.progress_callback(now_file/total*0.9)
                self.progress_callback(0.9)
                info("[downloader]unzip "+self.url)
                with py7zr.SevenZipFile(self.to, mode='r') as z:
                    z.extractall(path="software")
                self.progress_callback(1)
                self.onfinish()
                return
            except:
                pass


def download_files(files, onfisish, anim_list):
    threads = []
    finishnum = 0
    finishmax = len(files)

    def anim_check(*args):
        onfisish()  # run in main thread
        return -1

    def progfinish():
        nonlocal finishnum, finishmax
        finishnum += 1
        if (finishnum == finishmax):
            anim_list.anim.append(anim_check)

    for i in files:
        threads.append(Download_Theard(
            i["from"], i["to"], i["progbar"], progfinish))
        threads[-1].start()