/*
 * ToroDB
 * Copyright © 2014 8Kdata Technology (www.8kdata.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.torodb.mongodb.commands.signatures.admin;

import com.eightkdata.mongowp.server.api.Command;
import com.eightkdata.mongowp.server.api.CommandImplementation;
import com.eightkdata.mongowp.server.api.impl.CollectionCommandArgument;
import com.eightkdata.mongowp.server.api.tools.Empty;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.torodb.mongodb.commands.signatures.admin.CollModCommand.CollModArgument;
import com.torodb.mongodb.commands.signatures.admin.CollModCommand.CollModResult;
import com.torodb.mongodb.commands.signatures.admin.CreateCollectionCommand.CreateCollectionArgument;
import com.torodb.mongodb.commands.signatures.admin.CreateIndexesCommand.CreateIndexesArgument;
import com.torodb.mongodb.commands.signatures.admin.CreateIndexesCommand.CreateIndexesResult;
import com.torodb.mongodb.commands.signatures.admin.DropIndexesCommand.DropIndexesArgument;
import com.torodb.mongodb.commands.signatures.admin.DropIndexesCommand.DropIndexesResult;
import com.torodb.mongodb.commands.signatures.admin.ListCollectionsCommand.ListCollectionsArgument;
import com.torodb.mongodb.commands.signatures.admin.ListCollectionsCommand.ListCollectionsResult;
import com.torodb.mongodb.commands.signatures.admin.ListIndexesCommand.ListIndexesArgument;
import com.torodb.mongodb.commands.signatures.admin.ListIndexesCommand.ListIndexesResult;
import com.torodb.mongodb.commands.signatures.admin.RenameCollectionCommand.RenameCollectionArgument;

import java.util.Iterator;
import java.util.Map;

/**
 *
 */
public class AdminCommands implements Iterable<Command> {

  private final ImmutableList<Command> commands = ImmutableList.<Command>of(
      ListCollectionsCommand.INSTANCE,
      DropDatabaseCommand.INSTANCE,
      DropCollectionCommand.INSTANCE,
      CreateCollectionCommand.INSTANCE,
      ListIndexesCommand.INSTANCE,
      CreateIndexesCommand.INSTANCE,
      DropIndexesCommand.INSTANCE,
      RenameCollectionCommand.INSTANCE
  );

  @Override
  public Iterator<Command> iterator() {
    return commands.iterator();
  }

  @SuppressWarnings("checkstyle:LineLength")
  public abstract static class AdminCommandsImplementationsBuilder<ContextT> implements
      Iterable<Map.Entry<Command<?, ?>, CommandImplementation<?, ?, ? super ContextT>>> {

    public abstract CommandImplementation<CollModArgument, CollModResult, ? super ContextT> getCollModImplementation();

    public abstract CommandImplementation<ListCollectionsArgument, ListCollectionsResult, ? super ContextT> getListCollectionsImplementation();

    public abstract CommandImplementation<Empty, Empty, ? super ContextT> getDropDatabaseImplementation();

    public abstract CommandImplementation<CollectionCommandArgument, Empty, ? super ContextT> getDropCollectionImplementation();

    public abstract CommandImplementation<CreateCollectionArgument, Empty, ? super ContextT> getCreateCollectionImplementation();

    public abstract CommandImplementation<ListIndexesArgument, ListIndexesResult, ? super ContextT> getListIndexesImplementation();

    public abstract CommandImplementation<CreateIndexesArgument, CreateIndexesResult, ? super ContextT> getCreateIndexesImplementation();

    public abstract CommandImplementation<DropIndexesArgument, DropIndexesResult, ? super ContextT> getDropIndexesImplementation();

    public abstract CommandImplementation<RenameCollectionArgument, Empty, ? super ContextT> getRenameCollectionImplementation();

    private Map<Command<?, ?>, CommandImplementation<?, ?, ? super ContextT>> createMap() {
      return ImmutableMap.<Command<?, ?>, CommandImplementation<?, ?, ? super ContextT>>builder()
          .put(CollModCommand.INSTANCE, getCollModImplementation())
          .put(ListCollectionsCommand.INSTANCE, getListCollectionsImplementation())
          .put(DropDatabaseCommand.INSTANCE, getDropDatabaseImplementation())
          .put(DropCollectionCommand.INSTANCE, getDropCollectionImplementation())
          .put(CreateCollectionCommand.INSTANCE, getCreateCollectionImplementation())
          .put(ListIndexesCommand.INSTANCE, getListIndexesImplementation())
          .put(CreateIndexesCommand.INSTANCE, getCreateIndexesImplementation())
          .put(DropIndexesCommand.INSTANCE, getDropIndexesImplementation())
          .put(RenameCollectionCommand.INSTANCE, getRenameCollectionImplementation())
          .build();
    }

    @Override
    public Iterator<Map.Entry<Command<?, ?>, CommandImplementation<?, ?, ? super ContextT>>> iterator() {
      return createMap().entrySet().iterator();
    }

  }
}