#!/usr/bin/env python3

from time import sleep
import json
import pylistenbrainz
import sys


def connect_client(auth_token):
    try:
        client = pylistenbrainz.ListenBrainz()
        client.set_auth_token(auth_token)
    except BaseException:
        print("Unable to connect to ListenBrainz.")
        sys.exit(1)
    return client


def open_export(export_file):
    try:
        with open(export_file, 'r') as read_file:
            export_json = json.load(read_file)
    except FileNotFoundError:
        print("File does not exist.")
        sys.exit(1)
    return export_json


def parse_listen(raw):
    listen = pylistenbrainz.Listen(
        track_name=raw['track_metadata']['track_name'],
        artist_name=raw['track_metadata']['artist_name']
    )
    if 'listened_at' in raw:
        listen.listened_at = raw['listened_at']
    if 'user_name' in raw:
        listen.username = raw['user_name']
    if 'release_name' in raw['track_metadata']:
        listen.release_name = raw['track_metadata']['release_name']
    if 'additional_info' in raw['track_metadata']:
        listen.additional_info = raw['track_metadata']['additional_info']
        if 'tracknumber' in raw['track_metadata']['additional_info']:
            listen.tracknumber = raw['track_metadata']['additional_info']['tracknumber']
        if 'spotify_id' in raw['track_metadata']['additional_info']:
            listen.spotify_id = raw['track_metadata']['additional_info']['spotify_id']
        if 'isrc' in raw['track_metadata']['additional_info']:
            listen.spotify_id = raw['track_metadata']['additional_info']['isrc']
        if 'listening_from' in raw['track_metadata']['additional_info']:
            listen.listening_from = raw['track_metadata']['additional_info']['listening_from']
    if 'mbid_mapping' in raw['track_metadata']:
        if 'recording_mbid' in raw['track_metadata']['mbid_mapping']:
            listen.recording_mbid = raw['track_metadata']['mbid_mapping']['recording_mbid']
        if 'artist_mbids' in raw['track_metadata']['mbid_mapping']:
            listen.artist_mbids = raw['track_metadata']['mbid_mapping']['artist_mbids']
        if 'release_mbid' in raw['track_metadata']['mbid_mapping']:
            listen.release_mbid = raw['track_metadata']['mbid_mapping']['release_mbid']
    return listen


def main():
    client = connect_client(sys.argv[1])
    exported = open_export(sys.argv[2])
    print("Opened file with {} listens, starting import...".format(len(exported)))
    imported = 0
    for raw_listen in exported:
        listen = parse_listen(raw_listen)
        for x in range(0, 5):
            try:
                client.submit_single_listen(listen)
                imported = imported + 1
                print("Imported {} listens.".format(imported), end='\r')
                submit_error = None
            except BaseException:
                submit_error = True

            if submit_error:
                sleep_time = x * 5
                print(
                    "\nError occurred, retrying in {} seconds...".format(sleep_time))
                sleep(sleep_time)
            else:
                break
    print("\nSuccesfully imported {} listens.".format(imported))


if __name__ == '__main__':
    main()