WARSTATS: ensure the last wish for any realm is populated ...

... even if a realm has not made any wish in the last 90 days (Hello
Alsius). It's not tested in the field, i'll fix later if needed.

warstatus/stats/generate.py

@@ -84,6 +84,10 @@ def statistics(events, db_file, force_rewrite = False):
                 full_report[0]["gems"] = reporter.get_gems()
                 full_report[0]["wishes"] = reporter.get_wishes()
                 full_report[0]["fortsheld"] = reporter.get_fortsheld()
+                for realm in ("Alsius", "Ignis", "Syrtis"):
+                    # No wish the last 90 days?
+                    if full_report[-1][realm]["wishes"]["last"] == None:
+                        full_report[-1][realm]["wishes"]["last"] = reporter.get_last_wish_further(realm)
         end_time = timer()
         full_report[0]["generation_time"] = end_time - start_time;
 
@@ -176,6 +180,15 @@ def get_wishes(self):
 
         return wishes
 
+    def get_last_wish_further(self, realm):
+        self.sql.execute(f"""select location, date
+                             from events
+                             where type="wish"
+                             and location = "{realm}"
+                             order by date desc limit 1""")
+        r = self.sql.fetchone()
+        return r["date"]
+
     def get_fortsheld(self):
         forts_held = {
           "Aggersborg": {}, "Trelleborg": {}, "Imperia": {},