Camera Capture

capture.py

# USAGE
# python save_key_events.py --output output

# import the necessary packages
from greenthumb.note import Note
from uuid import getnode as get_mac
from io import BytesIO
from picamera import PiCamera
import datetime
import imutils
from time import sleep

# initialize the video stream and allow the camera sensor to
# warmup
frame = BytesIO()
camera = PiCamera()
camera.resolution = (3280, 2464)

print("[INFO] warming up camera...")
sleep(2.0)

profile = '@greenthumb/cam' + hex(get_mac())[-4:]

print("[INFO] capturing image...")
camera.capture(frame, 'jpeg')
print("[INFO] closing camera...")
camera.close()
Note(host='http://greenthumb-rails.herokuapp.com',
     title='This is an automated upload',
     frame=frame,
     user_email='jusbowen@gmail.com',
     user_token='hmcizxCzRymyA2rWgqTa').create_note(profile=profile)

note.py

import json
import re
import requests

class Note:
    def __init__(self,
        host=None,
        title='',
        body='',
        frame=None,
        user_email=None,
        user_token=None):

        self.host = host
        self.title = title
        self.body = body
        self.frame = frame
        self.user_email = user_email
        self.user_token = user_token

    def get_presigned_post(self):
        get_presigned_post_url = self.host + '/notes/new.json?user_email=' + self.user_email + '&user_token=' + self.user_token
        response = requests.get(get_presigned_post_url)
        presigned_post_json = json.loads(response.text)
        form_data = presigned_post_json['s3']['form-data']
        url = presigned_post_json['s3']['url']
        return url, form_data

    def post_file(self, url, form_data):
        files = {
            'file': ('test.jpg', self.frame.getvalue(), 'image/jpeg')
        }
        response = requests.post(url, files=files, data=form_data)
        url_re = 'http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+'
        return re.findall(url_re, response.text)[0].split('<')[0]

    def create_note(self, file_url=None, profile=''):    
        print("[INFO] getting presigned request...")
        url, form_data = self.get_presigned_post()      
        print("[INFO] uploading file...")
        file_url = self.post_file(url, form_data)
        form_data = {
            'note[title]': self.title,
            'note[body]': self.body + ' ' + profile,
            'note[file_url]': file_url,
            'user_email': self.user_email,
            'user_token': self.user_token
        } 
        print("[INFO] creating note...")
        response = requests.post(self.host + '/notes', data=form_data)