publish.py

import os
import sys
import time
import json
import requests
import constants as const
from requests_oauthlib import OAuth1

oauth = OAuth1(const.CONSUMER_KEY,
               client_secret=const.CLIENT_SECRET,
               resource_owner_key=const.ACCESS_TOKEN,
               resource_owner_secret=const.ACCESS_TOKEN_SECRET)


class ImageTweet(object):

    def __init__(self, file_name):
        # Defines image tweet properties
        self.image_filename = file_name
        self.total_bytes = os.path.getsize(self.image_filename)
        self.media_id = None
        self.processing_info = None

    def upload_init(self):
        # Initializes upload
        print('INIT')

        request_data = {
            'command': 'INIT',
            'media_type': 'image/jpg',
            'total_bytes': self.total_bytes,
            'media_category': 'tweet_image'
        }

        req = requests.post(url=const.MEDIA_UPLOAD_ENDPOINT,
                            data=request_data, auth=oauth)

        print(req.json())
        media_id = req.json()['media_id']

        self.media_id = media_id

        print('Media ID: %s' % str(media_id))

    def upload_append(self):
        # Uploads media in chunks and appends to chunks uploaded
        segment_id = 0
        bytes_sent = 0
        file = open(self.image_filename, 'rb')

        while bytes_sent < self.total_bytes:
            chunk = file.read(4*1024*1024)

            print('APPEND')

            request_data = {
                'command': 'APPEND',
                'media_id': self.media_id,
                'segment_index': segment_id
            }

            files = {
                'media': chunk
            }

            req = requests.post(url=const.MEDIA_UPLOAD_ENDPOINT,
                                data=request_data, files=files, auth=oauth)

            if req.status_code < 200 or req.status_code > 299:
                print(req.status_code)
                print(req.text)
                sys.exit(0)

            segment_id = segment_id + 1
            bytes_sent = file.tell()

            print('%s of %s bytes uploaded' %
                  (str(bytes_sent), str(self.total_bytes)))

        print('Upload chunks complete.')

    def upload_finalize(self):
        # Finalizes uploads and starts image processing
        print('FINALIZE')

        request_data = {
            'command': 'FINALIZE',
            'media_id': self.media_id
        }

        req = requests.post(url=const.MEDIA_UPLOAD_ENDPOINT,
                            data=request_data, auth=oauth)
        
        print(req.json())

        self.processing_info = req.json().get('processing_info', None)
        self.check_status()
        return self.media_id

    def check_status(self):
        # Checks image processing status

        if self.processing_info is None:
            return

        state = self.processing_info['state']

        print('Media processing status is %s ' % state)

        if state == u'succeeded':
            return

        if state == u'failed':
            sys.exit(0)

        check_after_secs = self.processing_info['check_after_secs']

        print('Checking after %s seconds' % str(check_after_secs))
        time.sleep(check_after_secs)

        print('STATUS')

        request_params = {
            'command': 'STATUS',
            'media_id': self.media_id
        }

        req = requests.get(url=const.MEDIA_UPLOAD_ENDPOINT,
                           params=request_params, auth=oauth)

        self.processing_info = req.json().get('processing_info', None)
        self.check_status()


def tweet(quote, author, media_id, text=""):
    request_data = {
        'status': f'{text}\n"{quote}"\n{author}',
        'media_ids': media_id
    }
    print("Publishing Tweet...")
    req = requests.post(url=const.POST_TWEET_ENDPOINT, data=request_data, auth=oauth)
    print("Tweet Published")