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Code Issues Releases Wiki Activity

Added support for sort parameter and WebSocket dependency

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This commit is contained in:
PaaaulZ
2021-01-02 08:03:00 +01:00
parent d2ac05f8f5
commit bfd0b395c7
3 changed files with 188 additions and 53 deletions
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0
java Normal file
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5
pom.xml
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@@ -83,6 +83,11 @@
<artifactId>httpmime</artifactId>
<version>4.3.3</version>
</dependency>
<dependency>
<groupId>org.java-websocket</groupId>
<artifactId>Java-WebSocket</artifactId>
<version>1.5.1</version>
</dependency>
</dependencies>
<build>
<plugins>

236
src/main/java/com/rarchives/ripme/ripper/rippers/ScrolllerRipper.java
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@@ -4,17 +4,21 @@ import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.*;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.oracle.truffle.js.nodes.access.IteratorStepNode;
import com.oracle.truffle.js.runtime.builtins.JSON;
import org.java_websocket.client.WebSocketClient;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;
import org.java_websocket.handshake.ServerHandshake;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
@@ -46,7 +50,7 @@ public class ScrolllerRipper extends AbstractJSONRipper {
return m.group(1);
}
throw new MalformedURLException("Expected scrolller.com URL format: " +
"scrolller.com/r/subreddit OR scroller.com/r/subreddit?filter= - got " + url + "instead");
"scrolller.com/r/subreddit OR scroller.com/r/subreddit?filter= - got " + url + "instead");
}
@Override
@@ -55,34 +59,56 @@ public class ScrolllerRipper extends AbstractJSONRipper {
}
private JSONObject prepareQuery(String iterator, String gid) throws IOException {
private JSONObject prepareQuery(String iterator, String gid, String sortByString) throws IOException, URISyntaxException {
// Prepares the JSONObject we need to pass to the GraphQL query.
String queryString = "query SubredditQuery( $url: String! $filter: SubredditPostFilter $iterator: String ) { getSubreddit(url: $url) { children( limit: 50 iterator: $iterator filter: $filter ) { iterator items { __typename url title subredditTitle subredditUrl redditPath isNsfw albumUrl isFavorite mediaSources { url width height isOptimized } } } } }";
String filterString = convertFilterString(getParameter(this.url,"filter"));
if (sortByString.equals("")) {
// Sorting not selected
String queryString = "query SubredditQuery( $url: String! $filter: SubredditPostFilter $iterator: String ) { getSubreddit(url: $url) { children( limit: 50 iterator: $iterator filter: $filter ) { iterator items { __typename url title subredditTitle subredditUrl redditPath isNsfw albumUrl isFavorite mediaSources { url width height isOptimized } } } } }";
String filterString = convertFilterString(getParameter(this.url,"filter"));
JSONObject variablesObject = new JSONObject().put("url", String.format("/r/%s", gid));
JSONObject variablesObject = new JSONObject().put("url", String.format("/r/%s", gid));
if (iterator != null) {
// Iterator is not present on the first page
variablesObject.put("iterator", iterator);
if (iterator != null) {
// Iterator is not present on the first page
variablesObject.put("iterator", iterator);
}
if (!filterString.equals("NOFILTER")) {
// We could also pass filter="" but not including it if not present is cleaner
variablesObject.put("filter", filterString);
}
JSONObject finalQueryObject = new JSONObject().put("variables", variablesObject).put("query", queryString);
return getPosts(finalQueryObject);
}
if (!filterString.equals("NOFILTER")) {
// We could also pass filter="" but not including it if not present is cleaner
variablesObject.put("filter", filterString);
else {
String queryString = "subscription SubredditSubscription( $url: String! $sortBy: SubredditSortBy $timespan: SubredditTimespan $iterator: String $limit: Int $filter: SubredditPostFilter ) { fetchSubreddit( url: $url sortBy: $sortBy timespan: $timespan iterator: $iterator limit: $limit filter: $filter ) { __typename ... on Subreddit { __typename url title secondaryTitle description createdAt isNsfw subscribers isComplete itemCount videoCount pictureCount albumCount isFollowing } ... on SubredditPost { __typename url title subredditTitle subredditUrl redditPath isNsfw albumUrl isFavorite mediaSources { url width height isOptimized } } ... on Iterator { iterator } ... on Error { message } } }";
String filterString = convertFilterString(getParameter(this.url,"filter"));
JSONObject variablesObject = new JSONObject().put("url", String.format("/r/%s", gid)).put("sortBy", sortByString.toUpperCase());
if (iterator != null) {
// Iterator is not present on the first page
variablesObject.put("iterator", iterator);
}
if (!filterString.equals("NOFILTER")) {
// We could also pass filter="" but not including it if not present is cleaner
variablesObject.put("filter", filterString);
}
JSONObject finalQueryObject = new JSONObject().put("variables", variablesObject).put("query", queryString);
return getPostsSorted(finalQueryObject);
}
JSONObject finalQueryObject = new JSONObject().put("variables", variablesObject).put("query", queryString);
return getPosts(finalQueryObject);
}
public String convertFilterString(String filterParameter) {
// Converts the ?filter= parameter of the URL to one that can be used in the GraphQL query
// I could basically remove the last "s" and uppercase instead of this switch statement but this looks easier to read.
// I could basically remove the last "s" and call toUpperCase instead of this switch statement but this looks easier to read.
switch (filterParameter) {
case "pictures":
return "PICTURE";
@@ -118,9 +144,7 @@ public class ScrolllerRipper extends AbstractJSONRipper {
private JSONObject getPosts(JSONObject data) {
// The actual GraphQL query call
// JSoup wants POST data in key=value but I need to write a JSON body so I can't use it...
try {
String url = "https://api.scrolller.com/api/v2/graphql";
URL obj = new URL(url);
@@ -139,75 +163,181 @@ public class ScrolllerRipper extends AbstractJSONRipper {
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer html = new StringBuffer();
StringBuffer jsonString = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
html.append(inputLine);
jsonString.append(inputLine);
}
in.close();
conn.disconnect();
return new JSONObject(html.toString());
return new JSONObject(jsonString.toString());
} catch (Exception e) {
e.printStackTrace();
}
return new JSONObject("{}");
}
}
private JSONObject getPostsSorted(JSONObject data) throws MalformedURLException {
// The actual GraphQL query call (if sort parameter is present)
try {
ArrayList<String> postsJsonStrings = new ArrayList<>();
WebSocketClient wsc = new WebSocketClient(new URI("wss://api.scrolller.com/api/v2/graphql")) {
@Override
public void onOpen(ServerHandshake serverHandshake) {
// As soon as the WebSocket connects send our query
this.send(data.toString());
}
@Override
public void onMessage(String s) {
postsJsonStrings.add(s);
if (s.contains("{\"data\":{\"fetchSubreddit\":{\"__typename\":\"Iterator\",\"iterator\":")) {
// Iterator is the last field returned, once we received it we can close the connection.
this.close();
}
}
@Override
public void onClose(int i, String s, boolean b) {
}
@Override
public void onError(Exception e) {
LOGGER.error(String.format("WebSocket error, server reported %s", e.getMessage()));
}
};
wsc.connect();
while (!wsc.isClosed()) {
// Posts list is not over until the connection closes.
}
JSONObject finalObject = new JSONObject();
JSONArray posts = new JSONArray();
// Iterator is the last object in the post list, let's duplicate it in his own object for clarity.
finalObject.put("iterator", new JSONObject(postsJsonStrings.get(postsJsonStrings.size()-1)));
for (String postString : postsJsonStrings) {
posts.put(new JSONObject(postString));
}
finalObject.put("posts", posts);
return finalObject;
} catch (URISyntaxException ue) {
// Nothing to catch, it's an hardcoded URI.
}
return null;
}
@Override
protected List<String> getURLsFromJSON(JSONObject json) throws JSONException {
JSONArray itemsList = json.getJSONObject("data").getJSONObject("getSubreddit").getJSONObject("children").getJSONArray("items");
int bestArea = 0;
String bestUrl = "";
List<String> list = new ArrayList<>();
if (json.has("posts")) {
// If the JSONObject contains the key "posts" it's our custom JSON made after the WebSocket call.
JSONArray itemsList = json.getJSONArray("posts");
int bestArea = 0;
String bestUrl = "";
List<String> list = new ArrayList<>();
for (Object item : itemsList) {
JSONArray sourcesTMP = ((JSONObject) item).getJSONArray("mediaSources");
for (Object sourceTMP : sourcesTMP)
{
int widthTMP = ((JSONObject) sourceTMP).getInt("width");
int heightTMP = ((JSONObject) sourceTMP).getInt("height");
int areaTMP = widthTMP * heightTMP;
for (Object item : itemsList) {
if (((JSONObject) item).getJSONObject("data").getJSONObject("fetchSubreddit").has("mediaSources")) {
// Is it really a post? It could be the subreddit description or the iterator (first and last item)
JSONArray sourcesTMP = ((JSONObject) item).getJSONObject("data").getJSONObject("fetchSubreddit").getJSONArray("mediaSources");
for (Object sourceTMP : sourcesTMP)
{
int widthTMP = ((JSONObject) sourceTMP).getInt("width");
int heightTMP = ((JSONObject) sourceTMP).getInt("height");
int areaTMP = widthTMP * heightTMP;
if (areaTMP > bestArea) {
// Better way to determine best image?
bestArea = widthTMP;
bestUrl = ((JSONObject) sourceTMP).getString("url");
}
}
list.add(bestUrl);
bestUrl = "";
bestArea = 0;
if (areaTMP > bestArea) {
// Better way to determine best image?
bestArea = widthTMP;
bestUrl = ((JSONObject) sourceTMP).getString("url");
}
}
list.add(bestUrl);
bestUrl = "";
bestArea = 0;
return list;
} else {
JSONArray itemsList = json.getJSONObject("data").getJSONObject("getSubreddit").getJSONObject("children").getJSONArray("items");
int bestArea = 0;
String bestUrl = "";
List<String> list = new ArrayList<>();
for (Object item : itemsList) {
JSONArray sourcesTMP = ((JSONObject) item).getJSONArray("mediaSources");
for (Object sourceTMP : sourcesTMP)
{
int widthTMP = ((JSONObject) sourceTMP).getInt("width");
int heightTMP = ((JSONObject) sourceTMP).getInt("height");
int areaTMP = widthTMP * heightTMP;
if (areaTMP > bestArea) {
// Better way to determine best image?
bestArea = widthTMP;
bestUrl = ((JSONObject) sourceTMP).getString("url");
}
}
list.add(bestUrl);
bestUrl = "";
bestArea = 0;
}
return list;
}
return list;
}
@Override
protected JSONObject getFirstPage() throws IOException {
if (getParameter(url,"sort") != null) {
// I need support for the WebSocket protocol to implement sorting.
// A GraphQL query to the API with the "sortBy" variable can't come from a POST request or it will return error 500, it has to come from a WebSocket.
LOGGER.warn("Sorting is not currently implemented and it will be ignored");
try {
return prepareQuery(null, this.getGID(url), getParameter(url,"sort"));
} catch (URISyntaxException e) {
LOGGER.error(String.format("Error obtaining first page: %s", e.getMessage()));
return null;
}
return prepareQuery(null, this.getGID(url));
}
@Override
public JSONObject getNextPage(JSONObject source) throws IOException {
// Every call the the API contains an "iterator" string that we need to pass to the API to get the next page
// Checking if iterator is null is not working for some reason, hence why the weird "iterator.toString().equals("null")"
Object iterator = source.getJSONObject("data").getJSONObject("getSubreddit").getJSONObject("children").get("iterator");
Object iterator = null;
if (source.has("iterator")) {
// sorted
iterator = source.getJSONObject("iterator").getJSONObject("data").getJSONObject("fetchSubreddit").get("iterator");
} else {
iterator = source.getJSONObject("data").getJSONObject("getSubreddit").getJSONObject("children").get("iterator");
}
if (!iterator.toString().equals("null")) {
return prepareQuery(iterator.toString(), this.getGID(url));
try {
return prepareQuery(iterator.toString(), this.getGID(url), getParameter(url,"sort"));
} catch (URISyntaxException e) {
LOGGER.error(String.format("Error changing page: %s", e.getMessage()));
return null;
}
} else {
return null;
}
}
}