ge plugin: add OSB actively traded price

http-api/src/main/java/net/runelite/http/api/osbuddy/GrandExchangeClient.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.api.osbuddy;
+
+import com.google.gson.JsonParseException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import lombok.extern.slf4j.Slf4j;
+import net.runelite.http.api.RuneLiteAPI;
+import okhttp3.HttpUrl;
+import okhttp3.Request;
+import okhttp3.Response;
+
+@Slf4j
+public class GrandExchangeClient
+{
+	public GrandExchangeResult lookupItem(int itemId) throws IOException
+	{
+		final HttpUrl url = RuneLiteAPI.getApiBase().newBuilder()
+			.addPathSegment("osb")
+			.addPathSegment("ge")
+			.addQueryParameter("itemId", Integer.toString(itemId))
+			.build();
+
+		log.debug("Built URI: {}", url);
+
+		final Request request = new Request.Builder()
+			.url(url)
+			.build();
+
+		try (final Response response = RuneLiteAPI.CLIENT.newCall(request).execute())
+		{
+			if (!response.isSuccessful())
+			{
+				throw new IOException("Error looking up item id: " + response.message());
+			}
+
+			final InputStream in = response.body().byteStream();
+			return RuneLiteAPI.GSON.fromJson(new InputStreamReader(in), GrandExchangeResult.class);
+		}
+		catch (JsonParseException ex)
+		{
+			throw new IOException(ex);
+		}
+	}
+}

http-api/src/main/java/net/runelite/http/api/osbuddy/GrandExchangeResult.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.api.osbuddy;
+
+import java.time.Instant;
+import lombok.Data;
+
+@Data
+public class GrandExchangeResult
+{
+	private int item_id;
+	private int buy_average;
+	private int sell_average;
+	private int overall_average;
+	private Instant last_update;
+}

http-service/src/main/java/net/runelite/http/service/osbuddy/GrandExchangeController.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service.osbuddy;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.CacheControl;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/osb/ge")
+public class GrandExchangeController
+{
+	private final GrandExchangeService grandExchangeService;
+
+	@Autowired
+	public GrandExchangeController(GrandExchangeService grandExchangeService)
+	{
+		this.grandExchangeService = grandExchangeService;
+	}
+
+	@RequestMapping
+	public ResponseEntity<GrandExchangeEntry> get(@RequestParam("itemId") int itemId) throws ExecutionException
+	{
+		GrandExchangeEntry grandExchangeEntry = grandExchangeService.get(itemId);
+
+		return ResponseEntity.ok()
+			.cacheControl(CacheControl.maxAge(30, TimeUnit.MINUTES).cachePublic())
+			.body(grandExchangeEntry);
+	}
+}

http-service/src/main/java/net/runelite/http/service/osbuddy/GrandExchangeEntry.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service.osbuddy;
+
+import java.time.Instant;
+import lombok.Data;
+
+@Data
+class GrandExchangeEntry
+{
+	private int item_id;
+	private int buy_average;
+	private int sell_average;
+	private int overall_average;
+	private Instant last_update;
+}

http-service/src/main/java/net/runelite/http/service/osbuddy/GrandExchangeService.java

@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service.osbuddy;
+
+import java.io.IOException;
+import java.sql.Timestamp;
+import java.time.Instant;
+import java.util.Map;
+import lombok.extern.slf4j.Slf4j;
+import net.runelite.http.service.osbuddy.beans.OsbuddySummaryItem;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+import org.sql2o.Connection;
+import org.sql2o.Query;
+import org.sql2o.Sql2o;
+
+@Service
+@Slf4j
+public class GrandExchangeService
+{
+	private static final String CREATE_GRAND_EXCHANGE_PRICES = "CREATE TABLE IF NOT EXISTS `osb_ge` (\n"
+		+ "  `item_id` int(11) NOT NULL,\n"
+		+ "  `buy_average` int(11) NOT NULL,\n"
+		+ "  `sell_average` int(11) NOT NULL,\n"
+		+ "  `overall_average` int(11) NOT NULL,\n"
+		+ "  `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,\n"
+		+ "  PRIMARY KEY (`item_id`)\n"
+		+ ") ENGINE=InnoDB";
+
+	private static final OsbuddyClient CLIENT = new OsbuddyClient();
+
+	private final Sql2o sql2o;
+
+	@Autowired
+	public GrandExchangeService(@Qualifier("Runelite SQL2O") Sql2o sql2o)
+	{
+		this.sql2o = sql2o;
+
+		try (Connection con = sql2o.open())
+		{
+			con.createQuery(CREATE_GRAND_EXCHANGE_PRICES).executeUpdate();
+		}
+	}
+
+	public GrandExchangeEntry get(int itemId)
+	{
+		try (Connection con = sql2o.open())
+		{
+			return con.createQuery("SELECT item_id, buy_average, sell_average, overall_average, last_update"
+				+ " FROM osb_ge WHERE item_id = :itemId")
+				.addParameter("itemId", itemId)
+				.executeAndFetchFirst(GrandExchangeEntry.class);
+		}
+	}
+
+	@Scheduled(initialDelay = 1000 * 5, fixedDelay = 1000 * 60 * 30)
+	private void updateDatabase()
+	{
+		try
+		{
+			Map<Integer, OsbuddySummaryItem> summary = CLIENT.getSummary();
+
+			try (Connection con = sql2o.beginTransaction())
+			{
+				Instant updateTime = Instant.now();
+
+				Query query = con.createQuery("INSERT INTO osb_ge (item_id, buy_average, sell_average, overall_average,"
+					+ " last_update) VALUES (:itemId, :buyAverage, :sellAverage, :overallAverage, :lastUpdate)"
+					+ " ON DUPLICATE KEY UPDATE buy_average = VALUES(buy_average), sell_average = VALUES(sell_average),"
+					+ " overall_average = VALUES(overall_average), last_update = VALUES(last_update)");
+
+				for (Map.Entry<Integer, OsbuddySummaryItem> entry : summary.entrySet())
+				{
+					Integer itemId = entry.getKey();
+					OsbuddySummaryItem item = entry.getValue();
+
+					query
+						.addParameter("itemId", itemId)
+						.addParameter("buyAverage", item.getBuy_average())
+						.addParameter("sellAverage", item.getSell_average())
+						.addParameter("overallAverage", item.getOverall_average())
+						.addParameter("lastUpdate", Timestamp.from(updateTime))
+						.addToBatch();
+				}
+
+				query.executeBatch();
+				con.commit(false);
+			}
+		}
+		catch (IOException e)
+		{
+			log.warn("Error while updating the osb grand exchange table", e);
+		}
+	}
+}

http-service/src/main/java/net/runelite/http/service/osbuddy/OsbuddyClient.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service.osbuddy;
+
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.reflect.TypeToken;
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.util.Map;
+import net.runelite.http.api.RuneLiteAPI;
+import net.runelite.http.service.osbuddy.beans.OsbuddySummaryItem;
+import okhttp3.HttpUrl;
+import okhttp3.Request;
+import okhttp3.Response;
+
+public class OsbuddyClient
+{
+	private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36";
+
+	public Map<Integer, OsbuddySummaryItem> getSummary() throws IOException
+	{
+		HttpUrl httpUrl = new HttpUrl.Builder()
+			.scheme("https")
+			.host("rsbuddy.com")
+			.addPathSegment("exchange")
+			.addPathSegment("summary.json")
+			.build();
+
+		Request request = new Request.Builder()
+			.url(httpUrl)
+			.header("User-Agent", USER_AGENT)
+			.build();
+
+		try (Response responseOk = RuneLiteAPI.CLIENT.newCall(request).execute())
+		{
+			if (!responseOk.isSuccessful())
+			{
+				throw new IOException("Error retrieving summary from OSBuddy: " + responseOk.message());
+			}
+
+			Type type = new TypeToken<Map<Integer, OsbuddySummaryItem>>()
+			{
+			}.getType();
+
+			return RuneLiteAPI.GSON.fromJson(responseOk.body().string(), type);
+		}
+		catch (JsonSyntaxException ex)
+		{
+			throw new IOException(ex);
+		}
+	}
+}

http-service/src/main/java/net/runelite/http/service/osbuddy/beans/OsbuddySummaryItem.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2018, AeonLucid <https://github.com/AeonLucid>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.http.service.osbuddy.beans;
+
+import lombok.Data;
+
+@Data
+public class OsbuddySummaryItem
+{
+	private int id;
+	private String name;
+	private boolean members;
+	private int sp;
+	private int buy_average;
+	private int sell_average;
+	private int overall_average;
+}

runelite-api/src/main/java/net/runelite/api/widgets/WidgetID.java

@@ -42,6 +42,7 @@ public class WidgetID
 	public static final int BANK_GROUP_ID = 12;
 	public static final int BANK_INVENTORY_GROUP_ID = 15;
 	public static final int GRAND_EXCHANGE_INVENTORY_GROUP_ID = 467;
+	public static final int GRAND_EXCHANGE_GROUP_ID = 465;
 	public static final int DEPOSIT_BOX_GROUP_ID = 192;
 	public static final int INVENTORY_GROUP_ID = 149;
 	public static final int FRIENDS_LIST_GROUP_ID = 429;
@@ -158,6 +159,18 @@ public class WidgetID
 	}
 
 	static class GrandExchange
+	{
+		static final int WINDOW_CONTAINER = 0;
+		static final int WINDOW_BORDERS = 2;
+		static final int HISTORY_BUTTON = 3;
+		static final int BACK_BUTTON = 4;
+		static final int OFFER_CONTAINER = 24;
+		static final int OFFER_DESCRIPTION = 25;
+		static final int OFFER_PRICE = 26;
+		static final int OFFER_CONFIRM_BUTTON = 27;
+	}
+
+	static class GrandExchangeInventory
 	{
 		static final int INVENTORY_ITEM_CONTAINER = 0;
 	}

runelite-api/src/main/java/net/runelite/api/widgets/WidgetInfo.java

@@ -114,7 +114,12 @@ public enum WidgetInfo
 	BANK_TITLE_BAR(WidgetID.BANK_GROUP_ID, WidgetID.Bank.BANK_TITLE_BAR),
 	BANK_ITEM_COUNT(WidgetID.BANK_GROUP_ID, WidgetID.Bank.BANK_ITEM_COUNT),
 
-	GRAND_EXCHANGE_INVENTORY_ITEMS_CONTAINER(WidgetID.GRAND_EXCHANGE_INVENTORY_GROUP_ID, WidgetID.GrandExchange.INVENTORY_ITEM_CONTAINER),
+	GRAND_EXCHANGE_WINDOW_CONTAINER(WidgetID.GRAND_EXCHANGE_GROUP_ID, WidgetID.GrandExchange.WINDOW_CONTAINER),
+	GRAND_EXCHANGE_OFFER_CONTAINER(WidgetID.GRAND_EXCHANGE_GROUP_ID, WidgetID.GrandExchange.OFFER_CONTAINER),
+	GRAND_EXCHANGE_OFFER_TEXT(WidgetID.GRAND_EXCHANGE_GROUP_ID, WidgetID.GrandExchange.OFFER_DESCRIPTION),
+	GRAND_EXCHANGE_OFFER_PRICE(WidgetID.GRAND_EXCHANGE_GROUP_ID, WidgetID.GrandExchange.OFFER_PRICE),
+
+	GRAND_EXCHANGE_INVENTORY_ITEMS_CONTAINER(WidgetID.GRAND_EXCHANGE_INVENTORY_GROUP_ID, WidgetID.GrandExchangeInventory.INVENTORY_ITEM_CONTAINER),
 
 	DEPOSIT_BOX_INVENTORY_ITEMS_CONTAINER(WidgetID.DEPOSIT_BOX_GROUP_ID, WidgetID.DepositBox.INVENTORY_ITEM_CONTAINER),
 

runelite-client/src/main/java/net/runelite/client/plugins/grandexchange/GrandExchangeConfig.java

@@ -56,4 +56,15 @@ public interface GrandExchangeConfig extends Config
 	{
 		return true;
 	}
+
+	@ConfigItem(
+		position = 3,
+		keyName = "enableOsbPrices",
+		name = "Enable OSB actively traded prices",
+		description = "Shows the OSBuddy actively traded price at the GE"
+	)
+	default boolean enableOsbPrices()
+	{
+		return true;
+	}
 }

runelite-client/src/main/java/net/runelite/client/plugins/grandexchange/GrandExchangePlugin.java

@@ -31,6 +31,7 @@ import com.google.common.eventbus.Subscribe;
 import com.google.inject.Provides;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
+import java.util.concurrent.ScheduledExecutorService;
 import javax.imageio.ImageIO;
 import javax.inject.Inject;
 import javax.swing.SwingUtilities;
@@ -48,8 +49,11 @@ import net.runelite.api.events.ChatMessage;
 import net.runelite.api.events.ConfigChanged;
 import net.runelite.api.events.FocusChanged;
 import net.runelite.api.events.GameStateChanged;
+import net.runelite.api.events.GameTick;
 import net.runelite.api.events.GrandExchangeOfferChanged;
 import net.runelite.api.events.MenuEntryAdded;
+import net.runelite.api.events.WidgetLoaded;
+import net.runelite.api.widgets.Widget;
 import net.runelite.api.widgets.WidgetID;
 import net.runelite.api.widgets.WidgetInfo;
 import net.runelite.client.Notifier;
@@ -61,7 +65,10 @@ import net.runelite.client.plugins.Plugin;
 import net.runelite.client.plugins.PluginDescriptor;
 import net.runelite.client.ui.NavigationButton;
 import net.runelite.client.ui.PluginToolbar;
+import net.runelite.client.util.StackFormatter;
 import net.runelite.client.util.Text;
+import net.runelite.http.api.osbuddy.GrandExchangeClient;
+import net.runelite.http.api.osbuddy.GrandExchangeResult;
 
 @PluginDescriptor(
 	name = "Grand Exchange"
@@ -69,6 +76,10 @@ import net.runelite.client.util.Text;
 @Slf4j
 public class GrandExchangePlugin extends Plugin
 {
+	private static final int OFFER_CONTAINER_ITEM = 21;
+	private static final int OFFER_DEFAULT_ITEM_ID = 6512;
+	private static final GrandExchangeClient CLIENT = new GrandExchangeClient();
+
 	@Getter(AccessLevel.PACKAGE)
 	private NavigationButton button;
 
@@ -103,6 +114,14 @@ public class GrandExchangePlugin extends Plugin
 	@Inject
 	private Notifier notifier;
 
+	@Inject
+	private ScheduledExecutorService executorService;
+
+	private Widget grandExchangeText;
+	private Widget grandExchangeItem;
+
+	private int lastItem = -1;
+
 	@Provides
 	GrandExchangeConfig provideConfig(ConfigManager configManager)
 	{
@@ -239,4 +258,72 @@ public class GrandExchangePlugin extends Plugin
 			setHotKeyPressed(false);
 		}
 	}
+
+	@Subscribe
+	public void onWidgetLoaded(WidgetLoaded event)
+	{
+		switch (event.getGroupId())
+		{
+			// Grand exchange was opened.
+			case WidgetID.GRAND_EXCHANGE_GROUP_ID:
+				if (!config.enableOsbPrices())
+				{
+					return;
+				}
+
+				Widget grandExchangeOffer = client.getWidget(WidgetInfo.GRAND_EXCHANGE_OFFER_CONTAINER);
+				grandExchangeText = client.getWidget(WidgetInfo.GRAND_EXCHANGE_OFFER_TEXT);
+				grandExchangeItem = grandExchangeOffer.getDynamicChildren()[OFFER_CONTAINER_ITEM];
+				lastItem = -1;
+				break;
+
+			// Grand exchange was closed (if it was open before).
+			case WidgetID.INVENTORY_GROUP_ID:
+				grandExchangeText = null;
+				grandExchangeItem = null;
+				lastItem = -1;
+				break;
+		}
+	}
+
+	@Subscribe
+	public void onGameTick(GameTick event)
+	{
+		if (grandExchangeText == null || grandExchangeItem == null)
+		{
+			return;
+		}
+
+		int itemId = grandExchangeItem.getItemId();
+		if (itemId == OFFER_DEFAULT_ITEM_ID
+			|| itemId == -1
+			|| lastItem == itemId)
+		{
+			return;
+		}
+
+		lastItem = itemId;
+		final Widget geText = grandExchangeText;
+
+		executorService.submit(() ->
+		{
+			try
+			{
+				final GrandExchangeResult result = CLIENT.lookupItem(itemId);
+
+				if (result.getItem_id() != lastItem)
+				{
+					// something else has since been looked up?
+					return;
+				}
+
+				final String text = geText.getText() + "<br>OSBuddy Actively traded price: " + StackFormatter.formatNumber(result.getOverall_average());
+				geText.setText(text);
+			}
+			catch (IOException e)
+			{
+				log.debug("Error getting price of item {}", itemId, e);
+			}
+		});
+	}
 }