Implements the add condition command and its tab completion

src/main/java/net/knarcraft/paidsigns/manager/PaidSignManager.java

@@ -9,8 +9,7 @@ import org.bukkit.configuration.file.YamlConfiguration;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
+import java.util.HashMap;
 import java.util.Map;
 import java.util.logging.Level;
 
@@ -19,7 +18,7 @@ import java.util.logging.Level;
  */
 public final class PaidSignManager {
 
-    private final List<PaidSign> paidSigns;
+    private final Map<String, PaidSign> paidSigns;
     private static final File signsFile = new File(PaidSigns.getInstance().getDataFolder(), "data.yml");
 
     /**
@@ -27,7 +26,7 @@ public final class PaidSignManager {
      *
      * @param paidSigns <p>The paid signs this manager should manage</p>
      */
-    public PaidSignManager(List<PaidSign> paidSigns) {
+    public PaidSignManager(Map<String, PaidSign> paidSigns) {
         this.paidSigns = paidSigns;
     }
 
@@ -38,7 +37,7 @@ public final class PaidSignManager {
      * @throws IOException <p>If unable to write to the signs file</p>
      */
     public void addPaidSign(PaidSign paidSign) throws IOException {
-        this.paidSigns.add(paidSign);
+        this.paidSigns.put(paidSign.getName(), paidSign);
         saveSigns(this.paidSigns);
     }
 
@@ -50,7 +49,7 @@ public final class PaidSignManager {
      * @throws IOException <p>If unable to write to the signs file</p>
      */
     public boolean removePaidSign(String name) throws IOException {
-        boolean removed = this.paidSigns.removeIf((sign) -> sign.getName().equals(name));
+        boolean removed = this.paidSigns.remove(name) != null;
         if (!removed) {
             return false;
         } else {
@@ -59,13 +58,23 @@ public final class PaidSignManager {
         }
     }
 
+    /**
+     * Gets the paid sign with the given name
+     *
+     * @param name <p>The paid sign with the given name</p>
+     * @return <p>The paid sign with the given name, or null if it does not exist</p>
+     */
+    public PaidSign getPaidSign(String name) {
+        return paidSigns.get(name);
+    }
+
     /**
      * Gets a copy of all registered paid signs
      *
      * @return <p>All registered paid signs</p>
      */
-    public List<PaidSign> getAllPaidSigns() {
-        return new ArrayList<>(paidSigns);
+    public Map<String, PaidSign> getAllPaidSigns() {
+        return new HashMap<>(paidSigns);
     }
 
     /**
@@ -73,15 +82,15 @@ public final class PaidSignManager {
      *
      * @return <p>The loaded paid signs</p>
      */
-    public static List<PaidSign> loadSigns() {
+    public static Map<String, PaidSign> loadSigns() {
         YamlConfiguration configuration = YamlConfiguration.loadConfiguration(signsFile);
         ConfigurationSection signSection = configuration.getConfigurationSection("paidSigns");
         if (signSection == null) {
             PaidSigns.getInstance().getLogger().log(Level.WARNING, "Signs section not found in data.yml");
-            return new ArrayList<>();
+            return new HashMap<>();
         }
 
-        List<PaidSign> paidSigns = new ArrayList<>();
+        Map<String, PaidSign> paidSigns = new HashMap<>();
         for (String name : signSection.getKeys(false)) {
             double cost = signSection.getDouble(name + ".cost");
             String permission = signSection.getString(name + ".permission");
@@ -89,7 +98,7 @@ public final class PaidSignManager {
             OptionState ignoreColor = OptionState.getFromBoolean(signSection.getBoolean(name + ".ignoreColor"));
             PaidSign sign = new PaidSign(name, cost, permission, ignoreCase, ignoreColor);
             loadConditions(signSection, sign);
-            paidSigns.add(sign);
+            paidSigns.put(name, sign);
         }
         return paidSigns;
     }
@@ -122,12 +131,12 @@ public final class PaidSignManager {
      * @param signs <p>The signs to save</p>
      * @throws IOException <p>If unable to write to the signs file</p>
      */
-    public static void saveSigns(List<PaidSign> signs) throws IOException {
+    public static void saveSigns(Map<String, PaidSign> signs) throws IOException {
         YamlConfiguration configuration = YamlConfiguration.loadConfiguration(signsFile);
         ConfigurationSection signSection = configuration.createSection("paidSigns");
 
-        for (PaidSign sign : signs) {
-            String name = sign.getName();
+        for (PaidSign sign : signs.values()) {
+            String name = signSection.getName();
             signSection.set(name + ".cost", sign.getCost());
             signSection.set(name + ".permission", sign.getPermission());
             signSection.set(name + ".ignoreCase", sign.getIgnoreCase());