add support for announcement page

.gitignore

@@ -73,3 +73,4 @@ BuildConfig.java
 
 # macOS
 .DS_Store
+data/hk4e/announcement/

data/GameAnnouncementList.json

@@ -57,5 +57,13 @@
       "mi18n_name": "Activity"
     }
   ],
-  "timezone": -5
+  "timezone": -5,
+  "alert": false,
+  "alert_id": 0,
+  "pic_list": [],
+  "pic_total": 0,
+  "pic_type_list": [],
+  "pic_alert": false,
+  "pic_alert_id": 0,
+  "static_sign": ""
 }

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.AnnouncementIndexHandler;
 import emu.grasscutter.server.dispatch.http.GachaDetailsHandler;
 import emu.grasscutter.server.dispatch.http.GachaRecordHandler;
 import emu.grasscutter.server.dispatch.json.*;
@@ -443,6 +444,11 @@ public final class DispatchServer {
 		// gacha details
 		httpServer.get("/gacha/details", new GachaDetailsHandler());
 
+		// announcement index
+		httpServer.get("/hk4e/announcement/*", new AnnouncementIndexHandler());
+		httpServer.get("/sw.js", new AnnouncementIndexHandler());
+		httpServer.get("/dora/lib/vue/2.6.11/vue.min.js", new AnnouncementIndexHandler());
+
 		// 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/AnnouncementIndexHandler.java

@@ -0,0 +1,61 @@
+package emu.grasscutter.server.dispatch.http;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.database.DatabaseHelper;
+import emu.grasscutter.game.Account;
+import emu.grasscutter.utils.FileUtils;
+import emu.grasscutter.utils.Utils;
+import express.http.HttpContextHandler;
+import express.http.Request;
+import express.http.Response;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Objects;
+
+import static emu.grasscutter.Configuration.DATA;
+
+public class AnnouncementIndexHandler implements HttpContextHandler {
+    private final String render_template;
+    private final String render_swjs;
+    private final String render_vueminjs;
+
+    public AnnouncementIndexHandler() {
+        File template = new File(Utils.toFilePath(DATA("/hk4e/announcement/index.html")));
+        File swjs = new File(Utils.toFilePath(DATA("/hk4e/announcement/sw.js")));
+        File vueminjs = new File(Utils.toFilePath(DATA("/hk4e/announcement/vue.min.js")));
+        this.render_template = template.exists() ? new String(FileUtils.read(template)) : null;
+        this.render_swjs = swjs.exists() ? new String(FileUtils.read(swjs)) : null;
+        this.render_vueminjs = vueminjs.exists() ? new String(FileUtils.read(vueminjs)) : null;
+    }
+
+    @Override
+    public void handle(Request req, Response res) throws IOException {
+        if (Objects.equals(req.path(), "/sw.js")) {
+            res.send(render_swjs);
+        }else if(Objects.equals(req.path(), "/hk4e/announcement/index.html")) {
+            res.send(render_template);
+        }else if(Objects.equals(req.path(), "/dora/lib/vue/2.6.11/vue.min.js")){
+            res.send(render_vueminjs);
+        }else{
+            File renderFile = new File(Utils.toFilePath(DATA(req.path())));
+            if(renderFile.exists()){
+                String ext = req.path().substring(req.path().lastIndexOf(".") + 1);
+                switch(ext){
+                    case "css":
+                        res.type("text/css");
+                        res.send(FileUtils.read(renderFile));
+                        break;
+                    case "js":
+                    default:
+                        res.send(FileUtils.read(renderFile));
+                        break;
+                }
+            }else{
+                Grasscutter.getLogger().info( "File not exist: " + req.path());
+            }
+        }
+
+
+    }
+}