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/*
 * Copyright 1&1 Internet AG, https://github.com/1and1/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.oneandone.troilus;


import static com.datastax.driver.core.querybuilder.QueryBuilder.bindMarker;
import static com.datastax.driver.core.querybuilder.QueryBuilder.eq;
import static com.datastax.driver.core.querybuilder.QueryBuilder.update;

import java.util.List;
import java.util.Map.Entry;

import com.datastax.driver.core.PreparedStatement;
import com.datastax.driver.core.Statement;
import com.datastax.driver.core.querybuilder.Clause;
import com.datastax.driver.core.querybuilder.QueryBuilder;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;



 

class CounterMutationQueryData {

    private final ImmutableMap keys;
    private final ImmutableList whereConditions;

    private final String name;
    private final long diff;

    
    public CounterMutationQueryData() {
        this(ImmutableMap.of(),
             ImmutableList.of(),
             null,
             0);
    }
    
    private CounterMutationQueryData(ImmutableMap keys,
                                     ImmutableList whereConditions,
                                     String name,
                                     long diff) {
        this.keys = keys;
        this.whereConditions = whereConditions;
        this.name = name; 
        this.diff = diff;
    }
   
    
    public CounterMutationQueryData keys(ImmutableMap keys) {
        return new CounterMutationQueryData(keys,
                                            this.whereConditions, 
                                            this.name,
                                            this.diff);
    }
    
    public CounterMutationQueryData whereConditions(ImmutableList whereConditions) {
        return new CounterMutationQueryData(this.keys,
                                            whereConditions, 
                                            this.name,
                                            this.diff);
    }
    
    public CounterMutationQueryData name(String name) {
        return new CounterMutationQueryData(this.keys,
                                            this.whereConditions, 
                                            name,
                                            this.diff);
    }
    
    public CounterMutationQueryData diff(long diff) {
        return new CounterMutationQueryData(this.keys,
                                            this.whereConditions, 
                                            this.name,
                                            diff);
    }
    
    
    public ImmutableMap getKeys() {
        return keys;
    }

    public ImmutableList getWhereConditions() {
        return whereConditions;
    }

    public String getName() {
        return name;
    }

    public long getDiff() {
        return diff;
    }
    
    ListenableFuture toStatementAsync(Context ctx) {
        com.datastax.driver.core.querybuilder.Update update = update(ctx.getDbSession().getTablename());
        
        // key-based update
        if (getWhereConditions().isEmpty()) {
            List