Add gacha details page.

src/main/java/emu/grasscutter/game/gacha/GachaBanner.java

@@ -102,6 +102,11 @@ public class GachaBanner {
 						+ lr(DISPATCH_INFO.accessAddress, DISPATCH_INFO.bindAddress) + ":"
 						+ lr(DISPATCH_INFO.accessPort, DISPATCH_INFO.bindPort)
 						+ "/gacha?s=" + sessionKey + "&gachaType=" + gachaType;
+		String details = "http" + (DISPATCH_INFO.encryption.useInRouting ? "s" : "") + "://"
+						+ lr(DISPATCH_INFO.accessAddress, DISPATCH_INFO.bindAddress) + ":"
+						+ lr(DISPATCH_INFO.accessPort, DISPATCH_INFO.bindPort)
+						+ "/gacha/details?s=" + sessionKey + "&gachaType=" + gachaType;
+
 		// Grasscutter.getLogger().info("record = " + record);
 		GachaInfo.Builder info = GachaInfo.newBuilder()
 				.setGachaType(this.getGachaType())
@@ -112,8 +117,8 @@ public class GachaBanner {
 	            .setCostItemNum(1)
 	            .setGachaPrefabPath(this.getPrefabPath())
 	            .setGachaPreviewPrefabPath(this.getPreviewPrefabPath())
-	            .setGachaProbUrl(record)
-	            .setGachaProbUrlOversea(record)
+	            .setGachaProbUrl(details)
+	            .setGachaProbUrlOversea(details)
 	            .setGachaRecordUrl(record)
 	            .setGachaRecordUrlOversea(record)
 	            .setTenCostItemId(this.getCostItem())

src/main/java/emu/grasscutter/game/gacha/GachaManager.java

@@ -65,7 +65,23 @@ public class GachaManager {
 	public Int2ObjectMap<GachaBanner> getGachaBanners() {
 		return gachaBanners;
 	}
-	
+
+	public int[] getYellowAvatars() {
+		return this.yellowAvatars;
+	}
+	public int[] getYellowWeapons() {
+		return this.yellowWeapons;
+	}
+	public int[] getPurpleAvatars() {
+		return this.purpleAvatars;
+	}
+	public int[] getPurpleWeapons() {
+		return this.purpleWeapons;
+	}
+	public int[] getBlueWeapons() {
+		return this.blueWeapons;
+	}
+
 	public int randomRange(int min, int max) {
 		return ThreadLocalRandom.current().nextInt(max - min + 1) + min;
 	}

src/main/java/emu/grasscutter/server/dispatch/DispatchServer.java

@@ -16,6 +16,7 @@ import emu.grasscutter.net.proto.RegionInfoOuterClass.RegionInfo;
 import emu.grasscutter.net.proto.RegionSimpleInfoOuterClass.RegionSimpleInfo;
 import emu.grasscutter.server.dispatch.authentication.AuthenticationHandler;
 import emu.grasscutter.server.dispatch.authentication.DefaultAuthenticationHandler;
+import emu.grasscutter.server.dispatch.http.GachaDetailsHandler;
 import emu.grasscutter.server.dispatch.http.GachaRecordHandler;
 import emu.grasscutter.server.dispatch.json.*;
 import emu.grasscutter.server.dispatch.json.ComboTokenReqJson.LoginTokenData;
@@ -455,6 +456,9 @@ public final class DispatchServer {
 
 		httpServer.raw().config.addSinglePageRoot("/gacha/mappings", gachaMappingsPath, Location.EXTERNAL);
 
+		// gacha details
+		httpServer.get("/gacha/details", new GachaDetailsHandler());
+
 		// static file support for plugins
 		httpServer.raw().config.precompressStaticFiles = false; // If this isn't set to false, files such as images may appear corrupted when serving static files
 

src/main/java/emu/grasscutter/server/dispatch/http/GachaDetailsHandler.java

@@ -0,0 +1,90 @@
+package emu.grasscutter.server.dispatch.http;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.database.DatabaseHelper;
+import emu.grasscutter.game.Account;
+import emu.grasscutter.game.gacha.GachaBanner;
+import emu.grasscutter.game.gacha.GachaManager;
+import emu.grasscutter.game.gacha.GachaBanner.BannerType;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.utils.FileUtils;
+import emu.grasscutter.utils.Utils;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
+
+import static emu.grasscutter.utils.Language.translate;
+
+import static emu.grasscutter.Configuration.*;
+
+public final class GachaDetailsHandler implements HttpContextHandler {
+	private final String render_template;
+
+	public GachaDetailsHandler() {
+		File template = new File(Utils.toFilePath(DATA("/gacha_details.html")));
+		this.render_template = template.exists() ? new String(FileUtils.read(template)) : null;
+	}
+
+	@Override
+	public void handle(Request req, Response res) throws IOException {
+		String response = this.render_template;
+
+		// Get player info (for langauge).
+		String sessionKey = req.query("s");
+		Account account = DatabaseHelper.getAccountBySessionKey(sessionKey);
+		Player player = Grasscutter.getGameServer().getPlayerByUid(account.getPlayerUid());
+
+		// If the template was not loaded, return an error.
+		if (this.render_template == null) {
+			res.send(translate(player, "gacha.details.template_missing"));
+			return;
+		}
+
+		// Add translated title etc. to the page.
+		response = response.replace("{{TITLE}}", translate(player, "gacha.details.title"));
+		response = response.replace("{{AVAILABLE_FIVE_STARS}}", translate(player, "gacha.details.available_five_stars"));
+		response = response.replace("{{AVAILABLE_FOUR_STARS}}", translate(player, "gacha.details.available_four_stars"));
+		response = response.replace("{{AVAILABLE_THREE_STARS}}", translate(player, "gacha.details.available_three_stars"));
+		
+		// Get the banner info for the banner we want.
+		int gachaType = Integer.parseInt(req.query("gachaType"));
+		GachaManager manager = Grasscutter.getGameServer().getGachaManager();
+	 	GachaBanner banner = manager.getGachaBanners().get(gachaType);
+
+		// Add 5-star items.
+		Set<String> fiveStarItems = new LinkedHashSet<>();
+
+		Arrays.stream(banner.getRateUpItems1()).forEach(i -> fiveStarItems.add(Integer.toString(i)));
+		if (banner.getBannerType() == BannerType.STANDARD || banner.getBannerType() == BannerType.EVENT) {
+			Arrays.stream(manager.getYellowAvatars()).forEach(i -> fiveStarItems.add(Integer.toString(i)));
+		}
+		if (banner.getBannerType() == BannerType.STANDARD || banner.getBannerType() == BannerType.WEAPON) {
+			Arrays.stream(manager.getYellowWeapons()).forEach(i -> fiveStarItems.add(Integer.toString(i)));
+		}
+
+		response = response.replace("{{FIVE_STARS}}", "[" + String.join(",", fiveStarItems) + "]");
+		
+		// Add 4-star items.
+		Set<String> fourStarItems = new LinkedHashSet<>();
+
+		Arrays.stream(banner.getRateUpItems2()).forEach(i -> fourStarItems.add(Integer.toString(i)));
+		Arrays.stream(manager.getPurpleAvatars()).forEach(i -> fourStarItems.add(Integer.toString(i)));
+		Arrays.stream(manager.getPurpleWeapons()).forEach(i -> fourStarItems.add(Integer.toString(i)));
+
+		response = response.replace("{{FOUR_STARS}}", "[" + String.join(",", fourStarItems) + "]");
+
+		// Add 3-star items.
+		Set<String> threeStarItems = new LinkedHashSet<>();
+		Arrays.stream(manager.getBlueWeapons()).forEach(i -> threeStarItems.add(Integer.toString(i)));
+		response = response.replace("{{THREE_STARS}}", "[" + String.join(",", threeStarItems) + "]");
+
+		// Done.
+		res.send(response);
+	}
+}

src/main/resources/languages/en-US.json

@@ -352,5 +352,14 @@
     "resetshop": {
       "description": "reset shop"
     }
+  },
+  "gacha": {
+    "details": {
+      "title": "Banner Details",
+      "available_five_stars": "Available 5-star Items",
+      "available_four_stars": "Available 4-star Items",
+      "available_three_stars": "Available 3-star Items",
+      "template_missing": "data/gacha_details.html is missing."
+    }
   }
 }

src/main/resources/languages/pl-PL.json

@@ -302,5 +302,14 @@
     "resetshop": {
       "description": "zresetuj sklep"
     }
+  },
+  "gacha": {
+    "details": {
+      "title": "Banner Details",
+      "available_five_stars": "Available 5-star Items",
+      "available_four_stars": "Available 4-star Items",
+      "available_three_stars": "Available 3-star Items",
+      "template_missing": "data/gacha_details.html is missing."
+    }
   }
 }

src/main/resources/languages/zh-CN.json

@@ -349,5 +349,14 @@
     "resetshop": {
       "description": "重置商店刷新时间"
     }
+  },
+  "gacha": {
+    "details": {
+      "title": "Banner Details",
+      "available_five_stars": "Available 5-star Items",
+      "available_four_stars": "Available 4-star Items",
+      "available_three_stars": "Available 3-star Items",
+      "template_missing": "data/gacha_details.html is missing."
+    }
   }
 }

src/main/resources/languages/zh-TW.json

@@ -302,5 +302,14 @@
     "resetshop": {
       "description": "重置商店時間"
     }
+  },
+  "gacha": {
+    "details": {
+      "title": "Banner Details",
+      "available_five_stars": "Available 5-star Items",
+      "available_four_stars": "Available 4-star Items",
+      "available_three_stars": "Available 3-star Items",
+      "template_missing": "data/gacha_details.html is missing."
+    }
   }
 }