content: /*
   * Copyright (c) 2016-2017 Daniel Ennis (Aikar) - MIT License
   *
   *  Permission is hereby granted, free of charge, to any person obtaining
   *  a copy of this software and associated documentation files (the
   *  "Software"), to deal in the Software without restriction, including
   *  without limitation the rights to use, copy, modify, merge, publish,
   *  distribute, sublicense, and/or sell copies of the Software, and to
   *  permit persons to whom the Software is furnished to do so, subject to
   *  the following conditions:
   *
   *  The above copyright notice and this permission notice shall be
   *  included in all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  package co.aikar.commands;
  
  import co.aikar.util.Table;
  import org.jetbrains.annotations.NotNull;
  
  import java.util.HashMap;
  import java.util.Locale;
  import java.util.Map;
  
  @SuppressWarnings("BooleanMethodIsAlwaysInverted") // No IDEA, you are wrong
  public class CommandConditions<
          I extends CommandIssuer,
          CEC extends CommandExecutionContext<CEC, I>,
          CC extends ConditionContext<I>
          > {
      private CommandManager manager;
      private Map<String, Condition<I>> conditions = new HashMap<>();
      private Table<Class<?>, String, ParameterCondition<?, ?, ?>> paramConditions = new Table<>();
  
      CommandConditions(CommandManager manager) {
          this.manager = manager;
      }
  
      public Condition<I> addCondition(@NotNull String id, @NotNull Condition<I> handler) {
          return this.conditions.put(id.toLowerCase(Locale.ENGLISH), handler);
      }
  
      public <P> ParameterCondition addCondition(Class<P> clazz, @NotNull String id,
                                                 @NotNull ParameterCondition<P, CEC, I> handler) {
          return this.paramConditions.put(clazz, id.toLowerCase(Locale.ENGLISH), handler);
      }
  
      void validateConditions(CommandOperationContext context) throws InvalidCommandArgument {
          RegisteredCommand cmd = context.getRegisteredCommand();
  
          validateConditions(cmd.conditions, context);
          validateConditions(cmd.scope, context);
      }
  
      private void validateConditions(BaseCommand scope, CommandOperationContext operationContext) throws InvalidCommandArgument {
          validateConditions(scope.conditions, operationContext);
  
          if (scope.parentCommand != null) {
              validateConditions(scope.parentCommand, operationContext);
          }
      }
  
      private void validateConditions(String conditions, CommandOperationContext context) throws InvalidCommandArgument {
          if (conditions == null) {
              return;
          }
  
          conditions = this.manager.getCommandReplacements().replace(conditions);
          CommandIssuer issuer = context.getCommandIssuer();
          for (String cond : ACFPatterns.PIPE.split(conditions)) {
              String[] split = ACFPatterns.COLON.split(cond, 2);
              String id = split[0].toLowerCase(Locale.ENGLISH);
              Condition<I> condition = this.conditions.get(id);
              if (condition == null) {
                  RegisteredCommand cmd = context.getRegisteredCommand();
                  this.manager.log(LogLevel.ERROR, "Could not find command condition " + id + " for " + cmd.method.getName());
                  continue;
              }
  
              String config = split.length == 2 ? split[1] : null;
              //noinspection unchecked
              CC conditionContext = (CC) this.manager.createConditionContext(issuer, config);
              condition.validateCondition(conditionContext);
          }
      }
  
      void validateConditions(CEC execContext, Object value) throws InvalidCommandArgument {
          String conditions = execContext.getCommandParameter().getConditions();
          if (conditions == null) {
              return;
          }
          conditions = this.manager.getCommandReplacements().replace(conditions);
          I issuer = execContext.getIssuer();
          for (String cond : ACFPatterns.PIPE.split(conditions)) {
              String[] split = ACFPatterns.COLON.split(cond, 2);
              ParameterCondition condition;
              Class<?> cls = execContext.getParam().getType();
              String id = split[0].toLowerCase(Locale.ENGLISH);
              do {
                  condition = this.paramConditions.get(cls, id);
                  if (condition == null && cls.getSuperclass() != null && cls.getSuperclass() != Object.class) {
                      cls = cls.getSuperclass();
                  } else {
                      break;
                  }
              } while (cls != null);
  
  
              if (condition == null) {
                  RegisteredCommand cmd = execContext.getCmd();
                  this.manager.log(LogLevel.ERROR, "Could not find command condition " + id + " for " + cmd.method.getName() + "::" + execContext.getParam().getName());
                  continue;
              }
              String config = split.length == 2 ? split[1] : null;
              //noinspection unchecked
              CC conditionContext = (CC) this.manager.createConditionContext(issuer, config);
  
              //noinspection unchecked
              condition.validateCondition(conditionContext, execContext, value);
          }
      }
  
      public interface Condition<I extends CommandIssuer> {
          void validateCondition(ConditionContext<I> context) throws InvalidCommandArgument;
      }
  
      public interface ParameterCondition<P, CEC extends CommandExecutionContext, I extends CommandIssuer> {
          void validateCondition(ConditionContext<I> context, CEC execContext, P value) throws InvalidCommandArgument;
      }
  }
  