Automatic note download of Sony Digital Paper on Arch Linux

dpt-notes-sync.py

#!/usr/bin/env python3
"""
usage: dpt-notes-sync.py ip_address
"""

import datetime
import json
import os

from dateutil import parser as dateparser
from dptrp1.dptrp1 import DigitalPaper

SYNC_DIR = '/home/je/org/pdf/'


def connect(address):
    """
    Loads the key and client ID to authenticate with the DPT-RP1
    """
    with open('/home/je/.dpt-client', 'r') as f:
        client_id = f.readline().strip()

    with open('/home/je/.dpt.key', 'r') as f:
        key = f.read()

    dpt = DigitalPaper(address)
    dpt.authenticate(client_id, key)
    return dpt


def download_notes(dpt):
    """
    Given an authenticated DigitalPaper instance, download all note files to a
    specified directory.
    """
    for doc in [f for f in dpt.list_documents() if is_modified_note(f)]:
        data = dpt.download(doc['entry_path'])
        local_path = SYNC_DIR + os.path.basename(doc['entry_path'])
        with open(local_path, 'wb') as f:
            f.write(data)
        print('Saved {} to {}'.format(doc['entry_path'], local_path))


def is_modified_note(doc):
    if doc['document_type'] == 'note':
        local_path = SYNC_DIR + os.path.basename(doc['entry_path'])
        if not os.path.exists(local_path):
            return True
        else:
            return os.path.getmtime(local_path) < dateparser.parse(
                doc['modified_date']).timestamp()


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('address', help="IP address of the DPT-RP1")
    args = parser.parse_args()

    try:
        dpt = connect(args.address)
        download_notes(dpt)
    except OSError:
        print(
            'Unable to reach device, verify it is connected to the same network segment.'
        )
        exit(1)

dpt-notes-sync.sh

#!/usr/bin/env bash

DPT_IP=`avahi-resolve-host-name digitalpaper.local | cut -f 2`
/home/je/bin/scripts/dpt-notes-sync.py $DPT_IP

dptsync.service

[Unit]
Description=Sony DPT-RP1 note synchronization service
After=network.target network-online.target dbus.socket

[Service]
Type=oneshot
ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl --user set-environment DPT_IP=$(avahi-resolve-host-name digitalpaper.local | cut -f 2)"
ExecStart=-%h/bin/scripts/dpt-notes-sync.py ${DPT_IP}

dptsync.timer

[Unit]
Description=Sony DPT-RP1 note synchronization service

[Timer]
OnBootSec=2m
OnUnitActiveSec=2h
Unit=dptsync.service

[Install]
WantedBy=timers.target