Prevent ruined towns from being bought (#7073)

Towny/src/main/java/com/palmergames/bukkit/towny/command/TownCommand.java

@@ -4445,10 +4445,14 @@ private void parseTownBuyTownCommand(CommandSender sender, String[] args) throws
 		if (!town.isForSale()) {
 			throw new TownyException(Translatable.of("msg_town_buytown_not_forsale"));
 		}
+
+		if (town.isRuined()) {
+			throw new TownyException("msg_town_buytown_ruined");
+		}
 
 		Resident resident = getResidentOrThrow(player);
 		if (resident.isMayor()) {
-			throw new TownyException(Translatable.of("msg_town_buytown_already_mayor", resident.getTownOrNull().getName()));
+			throw new TownyException(Translatable.of("msg_mayor_abandon"));
 		}
 
 		Confirmation

Towny/src/main/java/com/palmergames/bukkit/towny/object/Town.java

@@ -1042,6 +1042,9 @@ public void removeOutpostSpawn(Location loc) {
 	 */
 	public final void setForSale(boolean isForSale) {
 		this.isForSale = isForSale;
+
+		if (!isForSale)
+			this.forSalePrice = 0;
 	}
 
 	/**

Towny/src/main/java/com/palmergames/bukkit/towny/utils/TownRuinUtil.java

@@ -121,6 +121,8 @@ public static void putTownIntoRuinedState(Town town) {
 		if (TownySettings.getMaxResidentsPerTown() > 0)
 			ResidentUtil.reduceResidentCountToFitTownMaxPop(town);
 
+		town.setForSale(false);
+
 		town.save();
 		Towny.getPlugin().resetCache();
 

Towny/src/main/resources/lang/en-US.yml

@@ -2341,6 +2341,7 @@ msg_town_sell_confirmation: "This will put your town up for sale for %s. Are you
 msg_town_buytown_already_mayor: "You are already mayor of %s."
 msg_town_buytown_confirmation: "Buying %s will cost %s and remove you from any town you may currently be a part of. Are you sure you want to continue?"
 msg_town_buytown_not_forsale: "Specified town is not for sale."
+msg_town_buytown_ruined: "Ruined towns cannot be bought."
 
 msg_resident_about_reset: "&bResident about reset."
 msg_err_invalid_string_about_not_set: "Invalid string, resident about not set."