Add unit repair api.

src/main/java/xyz/alexcrea/cuanvil/api/ConflictAPI.java

@@ -135,7 +135,7 @@ public class ConflictAPI {
         // Remove from registry
         ConfigHolder.CONFLICT_HOLDER.getConflictManager().removeConflict(conflict);
 
-        // Write as null and save to file
+        // Delete and save to file
         ConfigHolder.CONFLICT_HOLDER.delete(conflict.getName());
         prepareSaveTask();
 

src/main/java/xyz/alexcrea/cuanvil/api/CustomAnvilRecipeApi.java

@@ -88,7 +88,7 @@ public class CustomAnvilRecipeApi {
         // Remove from registry
         ConfigHolder.CUSTOM_RECIPE_HOLDER.getRecipeManager().cleanRemove(recipe);
 
-        // Write as null and save to file
+        // Delete and save to file
         ConfigHolder.CUSTOM_RECIPE_HOLDER.delete(recipe.getName());
         prepareSaveTask();
 

src/main/java/xyz/alexcrea/cuanvil/api/MaterialGroupApi.java

@@ -163,7 +163,7 @@ public class MaterialGroupApi {
         // Remove from registry
         ConfigHolder.ITEM_GROUP_HOLDER.getItemGroupsManager().groupMap.remove(group.getName());
 
-        // Write as null and save to file
+        // Delete and save to file
         ConfigHolder.ITEM_GROUP_HOLDER.delete(group.getName());
         prepareSaveTask();
 

src/main/java/xyz/alexcrea/cuanvil/api/UnitRepairApi.java

@@ -0,0 +1,215 @@
+package xyz.alexcrea.cuanvil.api;
+
+import io.delilaheve.CustomAnvil;
+import kotlin.Triple;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.jetbrains.annotations.NotNull;
+import xyz.alexcrea.cuanvil.config.ConfigHolder;
+import xyz.alexcrea.cuanvil.gui.config.global.UnitRepairConfigGui;
+import xyz.alexcrea.cuanvil.gui.config.list.UnitRepairElementListGui;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Custom Anvil api for unit repair.
+ */
+@SuppressWarnings("unused")
+public class UnitRepairApi {
+
+    private UnitRepairApi(){}
+
+    private static int saveChangeTask = -1;
+
+    /**
+     * Write and add a custom anvil unit repair recipe.
+     * Will not write the recipe if it already exists or was deleted.
+     * Set the value to minecraft default value (0.25 = 25%)
+     *
+     * @param unit       The unit material used to repair the bellow item.
+     * @param repairable The item to be repaired.
+     * @return true if successful.
+     */
+    public static boolean addUnitRepair(@NotNull Material unit, @NotNull Material repairable){
+        return addUnitRepair(unit, repairable, 0.25, false);
+    }
+
+    /**
+     * Write and add a custom anvil unit repair recipe.
+     * Will not write the recipe if it already exists or was deleted.
+     *
+     * @param unit       The unit material used to repair the bellow item.
+     * @param repairable The item to be repaired.
+     * @param value      The amount to be repaired by every unit. (1% = 0.01)
+     * @return true if successful.
+     */
+    public static boolean addUnitRepair(@NotNull Material unit, @NotNull Material repairable, double value){
+        return addUnitRepair(unit, repairable, value, false);
+    }
+
+    /**
+     * Write and add a custom anvil unit repair recipe.
+     * Will not write the recipe if it already exists.
+     *
+     * @param unit            The unit material used to repair the bellow item.
+     * @param repairable      The item to be repaired.
+     * @param value           The amount to be repaired by every unit. (1% = 0.01)
+     * @param overrideDeleted If we should write even if the recipe was previously deleted.
+     * @return true if successful.
+     */
+    public static boolean addUnitRepair(@NotNull Material unit, @NotNull Material repairable, double value, boolean overrideDeleted){
+        FileConfiguration config = ConfigHolder.UNIT_REPAIR_HOLDER.getConfig();
+        String path = unit.name().toLowerCase() + "." + repairable.name().toLowerCase();
+
+        if(!overrideDeleted && ConfigHolder.UNIT_REPAIR_HOLDER.isDeleted(path)) return false;
+        if(config.contains(path)) return false;
+
+        // Set unit repair
+        return setUnitRepair(unit, repairable, value);
+    }
+
+    /**
+     * Write and add a custom anvil unit repair recipe.
+     * Do not check if it previously existed or exist.
+     *
+     * @param unit       The unit material used to repair the bellow item.
+     * @param repairable The item to be repaired.
+     * @param value      The amount to be repaired by every unit. (1% = 0.01)
+     * @return true if successful.
+     */
+    public static boolean setUnitRepair(@NotNull Material unit, @NotNull Material repairable, double value){
+        FileConfiguration config = ConfigHolder.UNIT_REPAIR_HOLDER.getConfig();
+
+        String repairableName = repairable.name().toLowerCase();
+        String path = unit.name().toLowerCase() + "." + repairableName;
+
+        // Add to config then prepare save
+        config.set(path, value);
+        prepareSaveTask();
+
+        // Add to gui
+        UnitRepairConfigGui repairConfigGui = UnitRepairConfigGui.getCurrentInstance();
+        if(repairConfigGui != null) {
+            UnitRepairElementListGui elementGui = repairConfigGui.getInstanceOrCreate(unit);
+
+            elementGui.updateValueForGeneric(repairableName, true);
+            repairConfigGui.updateValueForGeneric(unit, true);
+        }
+
+        return true;
+    }
+
+    /**
+     * Remove a custom anvil unit repair recipe.
+     *
+     * @param unit       The unit material used to repair the bellow item.
+     * @param repairable The item used to be repaired.
+     * @return true if successful.
+     */
+    public static boolean removeUnitRepair(@NotNull Material unit, @NotNull Material repairable){
+        // Delete every possible variation and save to file
+        String unitName = unit.name();
+        String repairableName = repairable.name();
+
+        FileConfiguration config = ConfigHolder.UNIT_REPAIR_HOLDER.getConfig();
+        config.set(unitName.toLowerCase() + repairableName.toUpperCase(), null);
+        config.set(unitName.toUpperCase() + repairableName.toLowerCase(), null);
+        config.set(unitName.toUpperCase() + repairableName.toUpperCase(), null);
+
+        // Test if it was the last value of this section
+        boolean lastValue = false;
+        if(config.isConfigurationSection(unitName.toLowerCase())) {
+            ConfigurationSection section = config.getConfigurationSection(unitName.toLowerCase());
+            if(section.getKeys(false).isEmpty()) {
+                lastValue = true;
+                config.set(unitName.toLowerCase(), null);
+            }
+
+        } else if (config.isConfigurationSection(unitName.toUpperCase())) {
+            ConfigurationSection section = config.getConfigurationSection(unitName.toUpperCase());
+            if(section.getKeys(false).isEmpty()) {
+                lastValue = true;
+                config.set(unitName.toUpperCase(), null);
+            }
+
+        } else lastValue = true;
+
+
+        // We only need to "delete" as the lower case to be counted as deleted
+        ConfigHolder.UNIT_REPAIR_HOLDER.delete(unitName.toLowerCase() + repairableName.toLowerCase());
+        prepareSaveTask();
+
+        // Remove from gui
+        UnitRepairConfigGui repairConfigGui = UnitRepairConfigGui.getCurrentInstance();
+        if(repairConfigGui != null) {
+            UnitRepairElementListGui elementGui = repairConfigGui.getInstanceOrCreate(unit);
+
+            elementGui.removeGeneric(repairableName);
+            if(lastValue){
+                repairConfigGui.removeGeneric(unit);
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Prepare a task to save custom unit repair recipe configuration.
+     */
+    private static void prepareSaveTask() {
+        if(saveChangeTask != -1) return;
+
+        saveChangeTask = Bukkit.getScheduler().scheduleSyncDelayedTask(CustomAnvil.instance, ()->{
+            ConfigHolder.UNIT_REPAIR_HOLDER.saveToDisk(true);
+            saveChangeTask = -1;
+        }, 0L);
+    }
+
+    /**
+     * Get every unit repair recipes.
+     * @return An immutable collection of unit repair recipes.
+     * <p>
+     * Each element of the provided triple represent a part of the recipe
+     * <ul>
+     *    <li>First object is the unit material used to repair the bellow item.
+     *    <li>Second object is the item to be repaired.
+     *    <li>Last object is the amount to be repaired by every unit. (1% = 0.01)
+     * </ul>
+     */
+    @NotNull
+    public static List<Triple<Material, Material, Double>> getUnitRepairs(){
+        List<Triple<Material, Material, Double>> mutableList = new ArrayList<>();
+
+        FileConfiguration config = ConfigHolder.UNIT_REPAIR_HOLDER.getConfig();
+        for (String unitKey : config.getKeys(false)) {
+            // Test if config section exist
+            if(!config.isConfigurationSection(unitKey)) continue;
+
+            // Test if unit is a material
+            Material unit = Material.getMaterial(unitKey.toUpperCase());
+            if(unit == null) continue;
+
+            // Iterate over reparable items
+            ConfigurationSection section = config.getConfigurationSection(unitKey);
+            for (String repairableKey : section.getKeys(false)) {
+                // Test if value section exist
+                if(!section.isDouble(repairableKey)) continue;
+
+                // Test if repairable is valid a material
+                Material repairable = Material.getMaterial(repairableKey.toUpperCase());
+                if(repairable == null) continue;
+
+                // Add the values
+                mutableList.add(new Triple<>(unit, repairable, section.getDouble(repairableKey)));
+
+            }
+        }
+
+        return Collections.unmodifiableList(mutableList);
+    }
+
+}

src/main/java/xyz/alexcrea/cuanvil/gui/config/global/UnitRepairConfigGui.java

@@ -122,6 +122,18 @@ public class UnitRepairConfigGui extends MappedGuiListConfigGui<Material, UnitRe
         }, CustomAnvil.instance);
     }
 
+    @NotNull
+    public UnitRepairElementListGui getInstanceOrCreate(Material mat){
+        UnitRepairElementListGui element = this.elementGuiMap.get(mat);
+        if(element == null){
+            updateValueForGeneric(mat, false);
+
+            element = this.elementGuiMap.get(mat);
+        }
+
+        return element;
+    }
+
     @Override // Not used in this implementation.
     protected String genericDisplayedName() {
         return "this function Should not be used.";

src/main/java/xyz/alexcrea/cuanvil/gui/config/list/UnitRepairElementListGui.java

@@ -83,7 +83,7 @@ public class UnitRepairElementListGui extends SettingGuiListConfigGui<String, Do
                         String materialName = type.name().toLowerCase();
 
                         // Add new material
-                        ConfigHolder.UNIT_REPAIR_HOLDER.getConfig().set(parentMaterial.name().toLowerCase()+"."+materialName,0.25);
+                        ConfigHolder.UNIT_REPAIR_HOLDER.getConfig().set(parentMaterial.name().toLowerCase() + "." + materialName,0.25);
 
                         if (GuiSharedConstant.TEMPORARY_DO_SAVE_TO_DISK_EVERY_CHANGE) {
                             ConfigHolder.UNIT_REPAIR_HOLDER.saveToDisk(GuiSharedConstant.TEMPORARY_DO_BACKUP_EVERY_SAVE);

src/main/kotlin/io/delilaheve/CustomAnvil.kt

@@ -18,6 +18,7 @@ import xyz.alexcrea.cuanvil.update.Update_1_21
 import xyz.alexcrea.cuanvil.util.Metrics
 import java.io.File
 import java.io.FileReader
+import java.util.logging.Level
 
 /**
  * Bukkit/Spigot/Paper plugin to alter anvil feature
@@ -113,7 +114,10 @@ class CustomAnvil : JavaPlugin() {
 
     private fun loadEnchantmentSystem(){
         // Load default configuration
-        if (!ConfigHolder.loadDefaultConfig()) return
+        if (!ConfigHolder.loadDefaultConfig()) {
+            logger.log(Level.SEVERE,"could not load default config.")
+            return
+        }
 
         // Register enchantments
         CAEnchantmentRegistry.getInstance().registerBukkit()
@@ -123,7 +127,10 @@ class CustomAnvil : JavaPlugin() {
         server.pluginManager.callEvent(enchantReadyEvent)
 
         // Load config
-        if (!ConfigHolder.loadNonDefaultConfig()) return
+        if (!ConfigHolder.loadNonDefaultConfig()) {
+            logger.log(Level.SEVERE,"could not load non default config.")
+            return
+        }
 
         // temporary: handle 1.21 update
         Update_1_21.handleUpdate()