WebHost: give proper incompatible version error message.. in the future when this is deployed for next time.

Main.py

@@ -311,7 +311,7 @@ def main(args, seed=None, baked_server_options: Optional[Dict[str, object]] = No
                 multidata = zlib.compress(pickle.dumps(multidata), 9)
 
                 with open(os.path.join(temp_dir, f'{outfilebase}.archipelago'), 'wb') as f:
-                    f.write(bytes([1]))  # version of format
+                    f.write(bytes([2]))  # version of format
                     f.write(multidata)
 
             multidata_task = pool.submit(write_multidata)

MultiServer.py

@@ -241,8 +241,8 @@ class Context:
     @staticmethod
     def decompress(data: bytes) -> dict:
         format_version = data[0]
-        if format_version != 1:
-            raise Exception("Incompatible multidata.")
+        if format_version > 2:
+            raise Utils.VersionException("Incompatible multidata.")
         return restricted_loads(zlib.decompress(data[1:]))
 
     def _load(self, decoded_obj: dict, use_embedded_server_options: bool):

Utils.py

@@ -474,3 +474,7 @@ def stream_input(stream, queue):
     thread = Thread(target=queuer, name=f"Stream handler for {stream.name}", daemon=True)
     thread.start()
     return thread
+
+
+class VersionException(Exception):
+    pass

WebHostLib/__init__.py

@@ -136,7 +136,7 @@ def view_seed(seed: UUID):
     seed = Seed.get(id=seed)
     if not seed:
         abort(404)
-    return render_template("viewSeed.html", seed=seed)
+    return render_template("viewSeed.html", seed=seed, slot_count=count(seed.slots))
 
 
 @app.route('/new_room/<suuid:seed>')

WebHostLib/templates/viewSeed.html

@@ -22,6 +22,10 @@
                     <td>Created:&nbsp;</td>
                     <td id="creation-time" data-creation-time="{{ seed.creation_time }}"></td>
                 </tr>
+                <tr>
+                    <td>Players:&nbsp;</td>
+                    <td>{{ slot_count }}</td>
+                </tr>
                 {% if seed.spoiler %}
                     <tr>
                         <td>Spoiler:&nbsp;</td>

WebHostLib/upload.py

@@ -9,7 +9,7 @@ from flask import request, flash, redirect, url_for, session, render_template
 from pony.orm import flush, select
 
 from WebHostLib import app, Seed, Room, Slot
-from Utils import parse_yaml
+from Utils import parse_yaml, VersionException
 from Patch import preferred_endings
 
 banned_zip_contents = (".sfc",)
@@ -102,11 +102,15 @@ def uploads():
             elif file and allowed_file(file.filename):
                 if zipfile.is_zipfile(file):
                     with zipfile.ZipFile(file, 'r') as zfile:
-                        res = upload_zip_to_db(zfile)
-                        if type(res) == str:
-                            return res
-                        elif res:
-                            return redirect(url_for("view_seed", seed=res.id))
+                        try:
+                            res = upload_zip_to_db(zfile)
+                        except VersionException:
+                            flash(f"Could not load multidata. Wrong Version detected.")
+                        else:
+                            if type(res) == str:
+                                return res
+                            elif res:
+                                return redirect(url_for("view_seed", seed=res.id))
                 else:
                     file.seek(0)  # offset from is_zipfile check
                     # noinspection PyBroadException