/*
 * Copyright 2019 Scott Logic Ltd
 *
 * 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 com.scottlogic.datahelix.generator.core.guice;

import com.google.inject.Inject;
import com.google.inject.Provider;
import com.scottlogic.datahelix.generator.core.config.detail.DataGenerationType;
import com.scottlogic.datahelix.generator.core.generation.GenerationConfigSource;
import com.scottlogic.datahelix.generator.core.walker.DecisionTreeWalker;
import com.scottlogic.datahelix.generator.core.walker.rowspec.RandomRowSpecDecisionTreeWalker;
import com.scottlogic.datahelix.generator.core.walker.rowspec.RowSpecDecisionTreeWalker;

public class DecisionTreeWalkerProvider implements Provider<DecisionTreeWalker> {
    private final RowSpecDecisionTreeWalker rowSpecDecisionTreeWalker;
    private final RandomRowSpecDecisionTreeWalker randomRowSpecDecisionTreeWalker;
    private final GenerationConfigSource configSource;

    @Inject
    public DecisionTreeWalkerProvider(
        RowSpecDecisionTreeWalker rowSpecDecisionTreeWalker,
        RandomRowSpecDecisionTreeWalker randomRowSpecDecisionTreeWalker,
        GenerationConfigSource configSource) {
        this.rowSpecDecisionTreeWalker = rowSpecDecisionTreeWalker;
        this.randomRowSpecDecisionTreeWalker = randomRowSpecDecisionTreeWalker;
        this.configSource = configSource;
    }

    @Override
    public DecisionTreeWalker get() {
        if (configSource.getGenerationType() == DataGenerationType.RANDOM)
            return randomRowSpecDecisionTreeWalker;

        return rowSpecDecisionTreeWalker;
    }
}
