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HELP.md
.gradle
build/
!gradle/wrapper/gradle-wrapper.jar
!**/src/main/**/build/
!**/src/test/**/build/
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
bin/
!**/src/main/**/bin/
!**/src/test/**/bin/
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
out/
!**/src/main/**/out/
!**/src/test/**/out/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
### VS Code ###
.vscode/

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<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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![Example article](assets/logo-title.png)
*Remarkable Pocket* synchronizes articles from [Pocket](https://getpocket.com) to your [Remarkable](https://remarkable.com/) tablet. It can be run on your computer or on a server. Because it does not run on the device itself this approach saves battery life, and is resistant to Remarkable software updates.
An example run of the program can be found below:
```
[2021-11-02 14:21:22] Starting sync...
[2021-11-02 14:21:25] Found 1 read article(s) on Remarkable.
[2021-11-02 14:21:25] (1/1) Marking 'Getting Unstuck' as read on Pocket...
[2021-11-02 14:21:25] (1/1) Deleting 'Getting Unstuck' from Remarkable...
[2021-11-02 14:21:27] Downloading 5 unread article(s) from Pocket (257 in total).
[2021-11-02 14:21:27] (1/5) Downloading: 'What Modules Are About'.
[2021-11-02 14:21:33] (2/5) Downloading: 'Pursue High-quality Leisure'.
[2021-11-02 14:21:39] (3/5) Downloading: 'Hunting down a C memory leak in a Go program'.
[2021-11-02 14:21:45] (4/5) Downloading: 'Beginner's Guide To Abstraction'.
[2021-11-02 14:22:03] (5/5) Downloading: 'Timer Modules in Microcontrollers'.
[2021-11-02 14:22:03] No content found. Skipping...
[2021-11-02 14:22:15] (6/5) Downloading: 'SSH Tunneling Explained'.
[2021-11-02 14:22:33] Uploading 5 article(s) to Remarkable.
[2021-11-02 14:22:33] (1/5) Uploading: 'What Modules Are About.epub'.
[2021-11-02 14:22:34] (2/5) Uploading: 'Pursue High-quality Leisure.epub'.
[2021-11-02 14:22:34] (3/5) Uploading: 'Hunting down a C memory leak in a Go program.epub'.
[2021-11-02 14:22:34] (4/5) Uploading: 'Beginner's Guide To Abstraction.epub'.
[2021-11-02 14:22:34] (5/5) Uploading: 'SSH Tunneling Explained.epub'.
[2021-11-02 14:22:35] Completed sync in 1m 13s.
[2021-11-02 14:22:35] Next sync in 30m.
```
<details><summary><i>Click here to see what a downloaded article looks like on the Remarkable.</i></summary>
<img src="assets/article-small.jpg" alt="An example article on the Remarkable.">
</details>
## Features
- **No installation required.** The application can be run with a single command.
- **Works on Remarkable 1 and 2.**
- **Full support for images, code blocks, and formulas.**
- **Articles are downloaded as epubs.** This allows you to customize the font, font size, margins, etc.
- **Automatically archive read articles on Pocket.** When you finish reading an article and close it while on the last page, it will be automatically deleted from the Remarkable and archived on Pocket. A new unread article will be downloaded in its place.
- **Download articles from Pocket with a given tag.** If a `tag-filter` (see [Configuration](#configuration)) is supplied then only articles with that tag will be downloaded.
## Usage
The easiest way to run the application is using Docker. First install Docker for your platform from https://docs.docker.com/get-docker/. Then run the following command to start the application on Linux or Mac (I have not tested it on Windows yet):
```
touch ~/.remarkable-pocket && docker run -it --env TZ=$(date +%Z) -p 65112:65112 -v ~/.remarkable-pocket:/root/.remarkable-pocket ghcr.io/nov1n/remarkable-pocket:0.0.1
```
The first time you run the application, you will be asked to authorize Pocket and Remarkable Cloud. Once you have done this subsequent runs will read the credentials from the `~/.remarkable-pocket` file.
By default articles are synchronized to the `/Pocket/` directory on the Remarkable every 30 minutes.
## Configuration
The default configuration can be changed by providing command-line arguments. Simply append these to the `docker run` command. Below is a list of all available options.
```
Usage: remarkable-pocket [-hnorV] [-d=<storageDir>] [-f=<tagFilter>] [-i=<interval>] [-l=<articleLimit>]
Synchronizes articles from Pocket to the Remarkable tablet.
-f, --tag-filter=<tagFilter>
Only download Pocket articles with the this tag.
-o, --run-once Run the synchronization once and then exit.
-n, --no-archive Don't archive read articles.
-l, --article-limit=<articleLimit>
The maximum number of Pocket articles to be present on the Remarkable.
Default: 10
-i, --interval=<interval> The interval between subsequent synchronizations.
Default: 30m
-r, --reset-credentials Reset all credentials.
-d, --storage-dir=<storageDir>
The storage directory on the Remarkable in which to store downloaded Pocket articles.
Default: /Pocket/
-h, --help Show this help message and exit.
-V, --version Print version information and exit.
```
## Limitations
- Articles behind a paywall cannot be downloaded.
- Articles that use javascript to load the the content cannot be downloaded.
## Thanks
- https://epub.press/ for providing a free epub generator API. Consider donating to support this project.
- https://github.com/juruen/rmapi for providing a Java API for the Remarkable Cloud.
## Support
[!["Buy Me A Coffee"](https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png)](https://www.buymeacoffee.com/nov1n) if you want to say thanks. :-)
## Disclaimer
The author(s) and contributor(s) are not associated with reMarkable AS, Norway. reMarkable is a registered trademark of reMarkable AS in some countries. Please see https://remarkable.com for their product.

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plugins {
id "org.springframework.boot" version "2.5.5"
id "io.spring.dependency-management" version "1.0.11.RELEASE"
id "com.google.cloud.tools.jib" version "3.1.4"
id "com.github.johnrengelman.shadow" version "7.1.0"
id "java"
}
java {
toolchain {
languageVersion = JavaLanguageVersion.of(17)
}
}
jib {
from {
image = "azul/zulu-openjdk-alpine:17-jre-headless"
}
container {
jvmFlags = ["-Xshare:auto", "-XX:TieredStopAtLevel=1", "-XX:CICompilerCount=1", "-XX:+UseSerialGC", "-Xmx512m"]
format = "OCI"
}
to {
image = "ghcr.io/nov1n/remarkable-pocket"
tags = ["0.0.1"]
}
}
group = "nl.carosi"
version = "0.0.1"
repositories {
mavenCentral()
mavenLocal()
maven {
url "https://jitpack.io"
}
}
dependencies {
implementation("com.positiondev.epublib:epublib-core:3.1") {
exclude group: "org.slf4j"
}
implementation("es.jlarriba:jrmapi:0.7") {
exclude group: "org.apache.logging.log4j"
}
implementation "net.lingala.zip4j:zip4j:1.2.4"
implementation "info.picocli:picocli:4.6.1"
implementation "com.fasterxml.jackson.core:jackson-core:2.13.0"
implementation "com.google.guava:guava:31.0.1-jre"
implementation "com.github.tchudyk:pocket-integration:1.2.0"
implementation "org.springframework:spring-aspects:5.3.11"
implementation "org.springframework.retry:spring-retry:1.3.1"
implementation "org.springframework.boot:spring-boot-starter-web:2.5.5"
testImplementation "org.springframework.boot:spring-boot-starter-test:2.5.5"
}
test {
useJUnitPlatform()
}

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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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rootProject.name = 'remarkable-pocket'

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package nl.carosi.remarkablepocket;
import static java.nio.file.StandardOpenOption.CREATE;
import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
import static java.nio.file.StandardOpenOption.WRITE;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.io.CharStreams;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import java.util.Optional;
import nl.carosi.remarkablepocket.model.Article;
import nl.siegmann.epublib.domain.Book;
import nl.siegmann.epublib.domain.Resource;
import nl.siegmann.epublib.domain.Resources;
import nl.siegmann.epublib.domain.SpineReference;
import nl.siegmann.epublib.epub.EpubReader;
import nl.siegmann.epublib.epub.EpubWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.http.HttpMethod;
import org.springframework.retry.annotation.Backoff;
import org.springframework.retry.annotation.Retryable;
import org.springframework.web.client.RestTemplate;
class ArticleDownloader {
public static final String POCKET_ID_SEPARATOR = "\t\t\t";
private static final Logger LOG = LoggerFactory.getLogger(ArticleDownloader.class);
private static final String BASE_URL = "https://epub.press/api/v1/books";
private static final String DOWNLOAD_URL_TEMPL = BASE_URL + "/%s/download";
private static final String STATUS_URL_TEMPL = BASE_URL + "/%s/status";
// Interval between epub press download retries.
private static final int RETRY_INTERVAL = 5000;
// Minimum character count for an epub to be considered valid.
private static final int MIN_VALID_CONTENT_SIZE = 4000;
private static final List<String> UNWANTED_RESOURCES =
List.of(
"cover.xhtml",
"images/cover.png",
"content/s2.xhtml", // References
"content/toc.xhtml", // Table of contents
"toc.ncx");
private final RestTemplate restTemplate;
private final EpubReader epubReader;
private final EpubWriter epubWriter;
// Required to call @Retryable method from the same class.
@Autowired private ArticleDownloader self;
public ArticleDownloader(
RestTemplateBuilder restTemplateBuilder, EpubReader epubReader, EpubWriter epubWriter) {
this.restTemplate = restTemplateBuilder.build();
this.epubReader = epubReader;
this.epubWriter = epubWriter;
}
Optional<Path> tryDownload(Article article, Path storageDir) {
Path downloadPath = storageDir.resolve(article.title() + "." + getFileType());
DownloadRequest req =
new DownloadRequest(
article.url(),
"Pocket"
+ POCKET_ID_SEPARATOR
+ article.id(), // Hide Pocket ID from the Remarkable UI.
new String[] {article.url()});
String downloadId = restTemplate.postForObject(BASE_URL, req, DownloadResponse.class).id();
self.waitUntilReady(downloadId);
try (OutputStream downloadStream =
Files.newOutputStream(downloadPath, CREATE, WRITE, TRUNCATE_EXISTING)) {
restTemplate.execute(
String.format(DOWNLOAD_URL_TEMPL, downloadId),
HttpMethod.GET,
null,
res -> res.getBody().transferTo(downloadStream));
} catch (IOException e) {
throw new UncheckedIOException(e);
}
try {
formatEpub(downloadPath, article.title());
} catch (IOException e) {
throw new UncheckedIOException(e);
}
return isValid(downloadPath) ? Optional.of(downloadPath) : Optional.empty();
}
String getFileType() {
return "epub";
}
private boolean isValid(Path article) {
Resource resource;
try (InputStream articleStream = Files.newInputStream(article)) {
resource =
epubReader
.readEpub(articleStream)
.getResources()
.getResourceMap()
.get("content/s1.xhtml");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
try (BufferedReader contentReader =
new BufferedReader(
new InputStreamReader(
resource.getInputStream(), resource.getInputEncoding()))) {
String content = CharStreams.toString(contentReader);
boolean isValid = content.length() > MIN_VALID_CONTENT_SIZE;
if (!isValid) {
LOG.warn("No content found. Skipping...");
}
return isValid;
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
@Retryable(
value = RuntimeException.class,
maxAttempts = 10,
backoff = @Backoff(delay = RETRY_INTERVAL))
@VisibleForTesting
void waitUntilReady(String downloadId) {
StatusResponse res =
restTemplate.getForObject(
String.format(STATUS_URL_TEMPL, downloadId), StatusResponse.class);
int progress = res.progress();
LOG.debug(
"Status: {} progress: {}%. Retrying in {}ms.",
res.message(), progress, RETRY_INTERVAL);
if (progress != 100) {
throw new RuntimeException();
}
}
private void formatEpub(Path path, String title) throws IOException {
Book book;
try (InputStream epubStream = Files.newInputStream(path)) {
book = epubReader.readEpub(epubStream);
}
book.getMetadata().setTitles(List.of(title));
Resources resources = book.getResources();
for (String href : UNWANTED_RESOURCES) {
resources.remove(href);
}
List<SpineReference> spineReferences =
book.getSpine().getSpineReferences().stream()
.filter(e -> e.getResourceId().equals("s1"))
.toList();
book.getSpine().setSpineReferences(spineReferences);
book.setCoverImage(resources.getByHref("content/s1.xhtml"));
// TODO: Remove navpoints and fix play order to start at 1, use a xml parser lib
// TODO: Remove guide element from ocx file
try (OutputStream bookStream = Files.newOutputStream(path)) {
epubWriter.write(book, bookStream);
}
}
private final record DownloadRequest(String author, String publisher, String[] urls) {}
private final record DownloadResponse(String id) {}
private final record StatusResponse(String message, int progress) {}
}

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package nl.carosi.remarkablepocket;
import com.google.common.collect.Streams;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.HashSet;
import java.util.List;
import java.util.Optional;
import javax.annotation.PostConstruct;
import nl.carosi.remarkablepocket.model.Article;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class DownloadService {
private static final Logger LOG = LoggerFactory.getLogger(DownloadService.class);
private final ArticleDownloader downloader;
private final HashSet<Article> invalidArticles = new HashSet<>();
private Path storageDir;
DownloadService(ArticleDownloader downloader) {
this.downloader = downloader;
}
@PostConstruct
void createStorageDir() throws IOException {
storageDir = Files.createTempDirectory(null);
}
@SuppressWarnings("UnstableApiUsage")
List<Path> download(List<Article> articles, int limit) {
int pocketCount = articles.size();
long total = Math.min(pocketCount, limit);
LOG.info("Downloading {} unread article(s) from Pocket ({} in total).", total, pocketCount);
return Streams.mapWithIndex(articles.stream(), (e, i) -> logProgress(e, i, total))
.filter(e -> !invalidArticles.contains(e))
.map(this::tryDownload)
.flatMap(Optional::stream)
.limit(limit)
.toList();
}
private Optional<Path> tryDownload(Article e) {
Optional<Path> path = downloader.tryDownload(e, storageDir);
if (path.isEmpty()) {
invalidArticles.add(e);
}
return path;
}
private Article logProgress(Article article, long index, long total) {
LOG.info("({}/{}) Downloading: '{}'.", index + 1, total, article.title());
return article;
}
void clearDownloads() throws IOException {
try (DirectoryStream<Path> paths =
Files.newDirectoryStream(storageDir, "*." + downloader.getFileType())) {
for (Path p : paths) {
try {
Files.delete(p);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}
}
}

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package nl.carosi.remarkablepocket;
import static nl.carosi.remarkablepocket.ArticleDownloader.POCKET_ID_SEPARATOR;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.databind.ObjectMapper;
import es.jlarriba.jrmapi.Jrmapi;
import es.jlarriba.jrmapi.model.Document;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import javax.annotation.PostConstruct;
import net.lingala.zip4j.core.ZipFile;
import net.lingala.zip4j.exception.ZipException;
import net.lingala.zip4j.io.ZipInputStream;
import net.lingala.zip4j.model.FileHeader;
import nl.carosi.remarkablepocket.model.DocumentMetadata;
import nl.siegmann.epublib.epub.EpubReader;
final class MetadataProvider {
private final Jrmapi rmapi;
private final EpubReader epubReader;
private final ObjectMapper objectMapper;
private Path workDir;
public MetadataProvider(Jrmapi rmapi, EpubReader epubReader, ObjectMapper objectMapper) {
this.rmapi = rmapi;
this.epubReader = epubReader;
this.objectMapper = objectMapper;
}
@PostConstruct
void createWorkDir() throws IOException {
workDir = Files.createTempDirectory(null);
}
DocumentMetadata getMetadata(Document doc) {
ZipFile zip;
String fileHash;
try {
zip = new ZipFile(rmapi.fetchZip(doc, workDir.toString() + File.separator));
fileHash = getFileHash(zip);
} catch (ZipException e) {
throw new RuntimeException(e);
}
try (ZipInputStream lines = zip.getInputStream(zip.getFileHeader(fileHash + ".content"));
ZipInputStream epub = zip.getInputStream(zip.getFileHeader(fileHash + ".epub"))) {
int pageCount = objectMapper.readValue(lines, Lines.class).pageCount();
String pocketId = extractPocketId(epub).split(POCKET_ID_SEPARATOR)[1];
return new DocumentMetadata(doc, pageCount, pocketId);
} catch (ZipException | IOException e) {
throw new RuntimeException(e);
}
}
private String getFileHash(ZipFile zip) throws ZipException {
@SuppressWarnings("unchecked")
List<FileHeader> fileHeaders =
zip.getFileHeaders().stream().map(FileHeader.class::cast).toList();
return fileHeaders.stream()
.findFirst()
.map(e -> e.getFileName().split("\\.")[0])
.orElseThrow(() -> new RuntimeException("Zip file is empty"));
}
private String extractPocketId(ZipInputStream epub) throws IOException {
// When creating the book the pocket ID was stored in the publisher's metadata field.
return epubReader.readEpub(epub).getMetadata().getPublishers().get(0);
}
@JsonIgnoreProperties(ignoreUnknown = true)
private final record Lines(int pageCount) {}
}

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package nl.carosi.remarkablepocket;
import java.io.IOException;
import java.util.List;
import java.util.function.Consumer;
import java.util.stream.Collectors;
import javax.annotation.PostConstruct;
import nl.carosi.remarkablepocket.model.Article;
import org.springframework.beans.factory.annotation.Value;
import pl.codeset.pocket.Pocket;
import pl.codeset.pocket.PocketAuth;
import pl.codeset.pocket.PocketAuthFactory;
import pl.codeset.pocket.modify.ArchiveAction;
import pl.codeset.pocket.modify.ModifyItemCmd;
import pl.codeset.pocket.read.ContentType;
import pl.codeset.pocket.read.DetailType;
import pl.codeset.pocket.read.GetItemsCmd;
import pl.codeset.pocket.read.ItemState;
import pl.codeset.pocket.read.PocketItem;
import pl.codeset.pocket.read.Sort;
final class PocketService {
static final String CONSUMER_KEY = "99428-51e4648a4528a1faa799c738";
private final String accessToken;
private final String tagFilter;
private Pocket pocket;
public PocketService(
@Value("${pocket.access-token}") String accessToken,
@Value("${pocket.tag-filter}") String tagFilter) {
this.accessToken = accessToken;
this.tagFilter = tagFilter;
}
static String getAccessToken(String redirectUrl, Consumer<String> prompt) throws IOException {
PocketAuthFactory factory = PocketAuthFactory.create(CONSUMER_KEY, redirectUrl);
prompt.accept(factory.getAuthUrl());
PocketAuth pocketAuth = factory.create();
return pocketAuth.getAccessToken();
}
@PostConstruct
private void auth() {
PocketAuth pocketAuth = PocketAuthFactory.createForAccessToken(CONSUMER_KEY, accessToken);
this.pocket = new Pocket(pocketAuth);
}
List<Article> getArticles() throws IOException {
GetItemsCmd cmd =
new GetItemsCmd.Builder()
.contentType(ContentType.article)
.detailType(DetailType.simple)
.tag(tagFilter)
.state(ItemState.unread)
.sort(Sort.newest)
.build();
List<PocketItem> unreads = pocket.getItems(cmd).getList();
return unreads.stream()
.map(e -> Article.of(e.getResolvedId(), e.getResolvedUrl(), e.getResolvedTitle()))
.collect(Collectors.toList());
}
void archive(String id) throws IOException {
pocket.modify(new ModifyItemCmd.Builder().action(new ArchiveAction(id)).build());
}
}

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package nl.carosi.remarkablepocket;
import static com.google.common.base.Preconditions.checkArgument;
import es.jlarriba.jrmapi.Jrmapi;
import es.jlarriba.jrmapi.model.Document;
import java.nio.file.Path;
import java.util.List;
import java.util.stream.Stream;
import javax.annotation.PostConstruct;
import nl.carosi.remarkablepocket.model.DocumentMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
final class RemarkableService {
private static final Logger LOG = LoggerFactory.getLogger(RemarkableService.class);
private final Jrmapi rmapi;
private final MetadataProvider metadataProvider;
private final String rmStorageDir;
private String rmStorageDirId = "";
public RemarkableService(
Jrmapi rmapi,
MetadataProvider metadataProvider,
@Value("${rm.storage-dir}") String rmStorageDir) {
if(!rmStorageDir.endsWith("/")) {
rmStorageDir += "/";
}
checkArgument(
rmStorageDir.matches("^/([^:/\\\\*\"?|<>.']+/)+$"),
"Invalid Remarkable storage dir. A valid example is: '/Articles/Pocket/'.");
this.rmapi = rmapi;
this.metadataProvider = metadataProvider;
this.rmStorageDir = rmStorageDir;
}
@PostConstruct
void findParentId() {
String[] dirs = rmStorageDir.substring(1, rmStorageDir.length() - 1).split("/");
for (final String dir : dirs) {
rmStorageDirId =
rmapi.listDocs().stream()
.filter(e -> e.getParent().equals(rmStorageDirId))
.filter(e -> e.getVissibleName().equals(dir))
.findFirst()
.map(Document::getID)
.orElseGet(() -> rmapi.createDir(dir, rmStorageDirId));
}
}
List<String> listDocumentNames() {
return docsStream().map(Document::getVissibleName).toList();
}
List<DocumentMetadata> listReadDocuments() {
return docsStream()
.map(metadataProvider::getMetadata)
.peek(this::logPages)
// Current page starts counting at 0.
.filter(e -> e.doc().getCurrentPage() + 1 == e.pageCount())
.toList();
}
void upload(List<Path> paths) {
LOG.info("Uploading {} article(s) to Remarkable.", paths.size());
int total = paths.size();
for (int i = 0; i < total; i++) {
Path path = paths.get(i);
LOG.info("({}/{}) Uploading: '{}'.", i + 1, total, path.getFileName());
upload(path);
}
}
void delete(Document doc) {
rmapi.deleteEntry(doc);
}
private void logPages(DocumentMetadata meta) {
LOG.debug(
"{}: Current page: {}, page count: {}",
meta.doc().getVissibleName(),
meta.doc().getCurrentPage() + 1,
meta.pageCount());
}
private Stream<Document> docsStream() {
return rmapi.listDocs().stream().filter(e -> e.getParent().equals(rmStorageDirId));
}
private void upload(Path path) {
rmapi.uploadDoc(path.toFile(), rmStorageDirId);
}
}

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src/main/java/nl/carosi/remarkablepocket/SyncApplication.java Normal file
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package nl.carosi.remarkablepocket;
import es.jlarriba.jrmapi.Jrmapi;
import nl.siegmann.epublib.epub.EpubReader;
import nl.siegmann.epublib.epub.EpubWriter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Import;
import org.springframework.retry.annotation.EnableRetry;
import org.springframework.scheduling.annotation.EnableScheduling;
@SpringBootApplication
@EnableScheduling
@EnableRetry
@Import({
ArticleDownloader.class,
DownloadService.class,
EpubReader.class,
EpubWriter.class,
MetadataProvider.class,
PocketService.class,
RemarkableService.class,
SyncService.class,
})
public class SyncApplication {
@Bean
Jrmapi jrmapi(@Value("${rm.device-token}") String deviceToken) {
return new Jrmapi(deviceToken);
}
}

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src/main/java/nl/carosi/remarkablepocket/SyncCommand.java Normal file
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package nl.carosi.remarkablepocket;
import static java.util.Map.entry;
import static java.util.UUID.randomUUID;
import static java.util.concurrent.TimeUnit.MINUTES;
import static nl.carosi.remarkablepocket.PocketService.getAccessToken;
import static org.springframework.boot.Banner.Mode.OFF;
import static org.springframework.boot.WebApplicationType.NONE;
import static picocli.CommandLine.Help.Visibility.ALWAYS;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import es.jlarriba.jrmapi.Authentication;
import java.io.Console;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.InetSocketAddress;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.function.Consumer;
import org.springframework.boot.builder.SpringApplicationBuilder;
import picocli.CommandLine;
import picocli.CommandLine.Command;
import picocli.CommandLine.Option;
@Command(
name = "sync",
description = "Synchronizes articles from Pocket to the Remarkable tablet.",
sortOptions = false,
usageHelpAutoWidth = true,
version = "0.1",
mixinStandardHelpOptions = true)
class SyncCommand implements Callable<Integer> {
// TODO: Add default error converter
@Option(
names = {"-f", "--tag-filter"},
description = "Only download Pocket articles with the this tag.",
arity = "1",
defaultValue = "")
private String tagFilter;
@Option(
names = {"-o", "--run-once"},
description = "Run the synchronization once and then exit.",
arity = "0")
private boolean runOnce;
@Option(
names = {"-n", "--no-archive"},
description = "Don't archive read articles.",
arity = "0")
private boolean noArchive;
@Option(
names = {"-l", "--article-limit"},
description = "The maximum number of Pocket articles to be present on the Remarkable.",
arity = "1",
defaultValue = "10",
showDefaultValue = ALWAYS)
private String articleLimit;
@Option(
names = {"-i", "--interval"},
description = "The interval between subsequent synchronizations.",
arity = "1",
defaultValue = "30m",
showDefaultValue = ALWAYS)
private String interval;
@Option(
names = {"-r", "--reset-credentials"},
description = "Reset all credentials.",
arity = "0")
private boolean resetCredentials;
@Option(
names = {"-d", "--storage-dir"},
description =
"The storage directory on the Remarkable in which to store downloaded Pocket articles.",
arity = "1",
defaultValue = "/Pocket/",
showDefaultValue = ALWAYS)
private String storageDir;
@Option(
names = {"-a", "--auth-file"},
description = "The file in which to store the authentication credentials.",
arity = "1",
defaultValue = "~/.remarkable-pocket",
hidden = true)
private String authFile;
@Option(
names = {"-p", "--port"},
description = "The port for the authorization callback server.",
arity = "1",
defaultValue = "65112",
hidden = true)
private int port;
public static void main(String... args) {
new CommandLine(new SyncCommand()).execute(args);
}
@Override
public Integer call() throws IOException {
Map<String, Object> cliProperties =
Map.ofEntries(
entry("pocket.archive-read", Boolean.toString(!noArchive)),
entry("rm.storage-dir", storageDir),
entry("rm.article-limit", articleLimit),
entry("sync.interval", "PT" + interval),
entry("sync.run-once", Boolean.toString(runOnce)),
entry("pocket.tag-filter", tagFilter));
new SpringApplicationBuilder(SyncApplication.class)
.logStartupInfo(false)
.profiles("default")
.bannerMode(OFF)
.web(NONE)
.properties(cliProperties)
.properties(authProperties())
.run();
return 0;
}
private Properties authProperties() throws IOException {
Path authFilePath = Path.of(authFile.replaceFirst("^~", System.getProperty("user.home")));
Path authDirPath = authFilePath.getParent();
if (Files.notExists(authDirPath)) {
Files.createDirectories(authDirPath);
}
if (Files.exists(authFilePath) && Files.size(authFilePath) > 0 && !resetCredentials) {
Properties properties = new Properties();
try (InputStream authStream = Files.newInputStream(authFilePath)) {
properties.load(authStream);
}
return properties;
} else {
return createAuthProperties(authFilePath);
}
}
private Properties createAuthProperties(Path authFilePath) throws IOException {
Console console = System.console();
if (console == null) {
System.out.println(
"No console found. If you're using Docker please add the '-it' flags.\n");
System.exit(1);
}
console.printf("""
Welcome to Remarkable Pocket!
Please follow the next steps to connect your Pocket and Remarkable accounts. You only need to do this once.
""");
PrintStream origOut = System.out;
System.setOut(debugFilteringStream());
String rmDeviceToken = obtainRmDeviceToken(console);
System.setOut(origOut);
String pocketAccessToken = obtainPocketAccessToken(console);
Properties properties = new Properties();
properties.setProperty("pocket.access-token", pocketAccessToken);
properties.setProperty("rm.device-token", rmDeviceToken);
try (OutputStream authStream = Files.newOutputStream(authFilePath)) {
properties.store(authStream, null);
}
return properties;
}
// Hack to filter and format third-party logging until Spring is initialized.
private PrintStream debugFilteringStream() {
return new PrintStream(System.out) {
@Override
public void write(byte[] buf) {
String msg = new String(buf, StandardCharsets.UTF_8);
if(!msg.contains("DEBUG")) {
super.print(msg.split("- ")[1]);
}
}
};
}
private String obtainRmDeviceToken(Console console) {
String rmDeviceToken = null;
while (rmDeviceToken == null) {
String rmCloudCode =
console.readLine(
"Paste the code from https://my.remarkable.com/device/desktop/connect: ");
console.printf("Verifying... ");
rmDeviceToken = new Authentication().registerDevice(rmCloudCode, randomUUID());
}
console.printf("Success!\n");
return rmDeviceToken;
}
private String obtainPocketAccessToken(Console console) throws IOException {
HttpServer server = HttpServer.create(new InetSocketAddress(port), 0);
ExecutorService execService = Executors.newSingleThreadExecutor();
server.setExecutor(execService);
server.createContext("/redirect", new RedirectHandler(server, execService));
server.start();
Consumer<String> waitForUserAuth =
authUrl -> {
console.printf("Now visit %s and authorize this application.\n\n", authUrl);
try {
boolean terminated = execService.awaitTermination(1, MINUTES);
if (!terminated) {
throw new InterruptedException();
}
} catch (InterruptedException e) {
console.printf("Pocket authorization timed out. Please try again.\n");
System.exit(1);
}
};
return getAccessToken("http://localhost:" + port + "/redirect", waitForUserAuth);
}
private static final class RedirectHandler implements HttpHandler {
private final HttpServer server;
private final ExecutorService execService;
RedirectHandler(HttpServer server, ExecutorService execService) {
this.server = server;
this.execService = execService;
}
@Override
public void handle(HttpExchange exchange) throws IOException {
OutputStream outputStream = exchange.getResponseBody();
String res = "Authorization completed!";
exchange.sendResponseHeaders(200, res.length());
outputStream.write(res.getBytes());
outputStream.flush();
outputStream.close();
server.stop(0);
execService.shutdown();
}
}
}

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src/main/java/nl/carosi/remarkablepocket/SyncService.java Normal file
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package nl.carosi.remarkablepocket;
import static java.time.temporal.ChronoUnit.SECONDS;
import java.io.IOException;
import java.nio.file.Path;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import nl.carosi.remarkablepocket.model.Article;
import nl.carosi.remarkablepocket.model.DocumentMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.scheduling.annotation.Scheduled;
final class SyncService {
private static final Logger LOG = LoggerFactory.getLogger(SyncService.class);
private final PocketService pocketService;
private final DownloadService downloadService;
private final RemarkableService remarkableService;
private final ApplicationContext appContext;
private final int articleLimit;
private final boolean archiveRead;
private final Duration syncInterval;
private final boolean runOnce;
public SyncService(
PocketService pocketService,
DownloadService downloadService,
RemarkableService remarkableService,
ApplicationContext appContext,
@Value("${rm.article-limit}") int articleLimit,
@Value("${pocket.archive-read}") boolean archiveRead,
@Value("${sync.interval}") Duration syncInterval,
@Value("${sync.run-once}") boolean runOnce) {
this.pocketService = pocketService;
this.downloadService = downloadService;
this.remarkableService = remarkableService;
this.appContext = appContext;
this.articleLimit = articleLimit;
this.archiveRead = archiveRead;
this.syncInterval = syncInterval;
this.runOnce = runOnce;
}
private static String humanReadable(Duration duration) {
return duration.truncatedTo(SECONDS)
.toString()
.substring(2)
.replaceAll("(\\d[HMS])(?!$)", "$1 ")
.toLowerCase();
}
@Scheduled(fixedDelayString = "${sync.interval}")
void sync() {
try {
syncImpl();
} catch (IOException e) {
LOG.error("Error occurred during sync.", e);
}
if (runOnce) {
LOG.info("Run-once option was set. Exiting.");
System.exit(SpringApplication.exit(appContext, () -> 0));
}
LOG.info("Next sync in {}.\n", humanReadable(syncInterval));
}
private void syncImpl() throws IOException {
LOG.info("Starting sync...");
Instant start = Instant.now();
if (archiveRead) {
archiveReadArticles();
}
Set<String> articlesOnRm = Set.copyOf(remarkableService.listDocumentNames());
int nArticlesOnRm = articlesOnRm.size();
if (nArticlesOnRm >= articleLimit) {
LOG.info("No new articles synced. Remarkable already has {} article(s).", articleLimit);
return;
}
List<Article> unsynced =
pocketService.getArticles().stream()
.filter(e -> !articlesOnRm.contains(e.title()))
.collect(Collectors.toList());
if (unsynced.size() == 0) {
LOG.info("All Pocket articles are synced with Remarkable.");
return;
}
downloadService.clearDownloads();
List<Path> downloads = downloadService.download(unsynced, articleLimit - nArticlesOnRm);
remarkableService.upload(downloads);
LOG.info("Completed sync in {}.", humanReadable(Duration.between(start, Instant.now())));
}
private void archiveReadArticles() throws IOException {
List<DocumentMetadata> documents = remarkableService.listReadDocuments();
int nDocs = documents.size();
LOG.info("Found {} read article(s) on Remarkable.", nDocs);
for (int i = 0; i < nDocs; i++) {
DocumentMetadata doc = documents.get(i);
LOG.info(
"({}/{}) Marking '{}' as read on Pocket...",
i+1,
nDocs,
doc.doc().getVissibleName());
pocketService.archive(doc.pocketId());
LOG.info(
"({}/{}) Deleting '{}' from Remarkable...",
i+1,
nDocs,
doc.doc().getVissibleName());
remarkableService.delete(doc.doc());
}
}
}

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src/main/java/nl/carosi/remarkablepocket/model/Article.java Normal file
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package nl.carosi.remarkablepocket.model;
public final record Article(String id, String url, String title) {
public static Article of(String id, String url, String title) {
return new Article(id, url, sanitize(title));
}
private static String sanitize(String title) {
return title.replaceAll("/", " ").replaceAll(" +", " ").strip();
}
}

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src/main/java/nl/carosi/remarkablepocket/model/DocumentMetadata.java Normal file
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package nl.carosi.remarkablepocket.model;
import es.jlarriba.jrmapi.model.Document;
public final record DocumentMetadata(Document doc, int pageCount, String pocketId) {}

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src/main/resources/application.properties Normal file
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logging.level.nl.siegmann.epublib=OFF
#logging.level.nl.carosi.remarkablepocket=DEBUG
logging.pattern.console=[%d{yyyy-MM-dd HH:mm:ss}] %clr(%m){faint}%n

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src/test/java/nl/carosi/remarkablepocket/SyncCommandTests.java Normal file
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package nl.carosi.remarkablepocket;
import org.junit.jupiter.api.Test;
class SyncCommandTests {
@Test
void contextLoads() {}
@Test
void test() {}
}