import qt
import requests
import time


#https://stackoverflow.com/questions/13909900/progress-of-python-requests-post

progress = qt.QProgressDialog(mainWindow())
link = "http://172.16.71.222:5000/uploads/G000639_2021-08-09_062219_result.nii.gz"
file_name = "download.data"
with open(file_name, "wb") as f:
    print("Downloading %s" % file_name)
    response = requests.get(link, stream=True)
    total_length = response.headers.get('content-length')
    if total_length is None: # no content length header
        f.write(response.content)
    else:
        dl = 0
        total_length = int(total_length)
        print("Total len: ", total_length)
        for data in response.iter_content(chunk_size=32):
            dl += len(data)
            f.write(data)
            done = int(100.0 * dl / total_length)
            print("Done: ", done, "  ", type(data), " ", len(data))
            progress.setValue(done)
            time.sleep(0.1)
            slicer.app.processEvents()
            if dl >= total_length: break

progress.setValue(100)