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/*
 *  Copyright 2024 Budapest University of Technology and Economics
 *
 *  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 hu.bme.mit.theta.xta.analysis.lazy;

import hu.bme.mit.theta.analysis.Trace;
import hu.bme.mit.theta.analysis.algorithm.SafetyChecker;
import hu.bme.mit.theta.analysis.algorithm.arg.ARG;
import hu.bme.mit.theta.analysis.algorithm.arg.SearchStrategy;
import hu.bme.mit.theta.analysis.unit.UnitPrec;
import hu.bme.mit.theta.xta.XtaSystem;
import hu.bme.mit.theta.xta.analysis.XtaAction;
import hu.bme.mit.theta.xta.analysis.XtaState;

public final class LazyXtaCheckerFactory {

    private LazyXtaCheckerFactory() {
    }

    public static SafetyChecker, XtaAction>, ? extends Trace, XtaAction>, UnitPrec> create(final XtaSystem system,
                                                                                                                                                     final DataStrategy dataStrategy, final ClockStrategy clockStrategy, final SearchStrategy searchStrategy) {
        final CombinedStrategy algorithmStrategy = combineStrategies(system, dataStrategy, clockStrategy);
        final SafetyChecker, XtaAction>, ? extends Trace, XtaAction>, UnitPrec> checker = LazyXtaChecker.create(
                system,
                algorithmStrategy, searchStrategy);
        return checker;
    }

    private static CombinedStrategy combineStrategies(final XtaSystem system,
                                                            final DataStrategy dataStrategy,
                                                            final ClockStrategy clockStrategy) {

        switch (dataStrategy) {
            case BWITP:

                switch (clockStrategy) {
                    case BWITP:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createBwItpStrategy(system),
                                ClockStrategies.createBwItpStrategy(system));
                    case FWITP:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createBwItpStrategy(system),
                                ClockStrategies.createFwItpStrategy(system));
                    case LU:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createBwItpStrategy(system),
                                ClockStrategies.createLuStrategy(system));
                    default:
                        throw new AssertionError();
                }

            case FWITP:

                switch (clockStrategy) {
                    case BWITP:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createFwItpStrategy(system),
                                ClockStrategies.createBwItpStrategy(system));
                    case FWITP:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createFwItpStrategy(system),
                                ClockStrategies.createFwItpStrategy(system));
                    case LU:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createFwItpStrategy(system),
                                ClockStrategies.createLuStrategy(system));
                    default:
                        throw new AssertionError();
                }

            case NONE:

                switch (clockStrategy) {
                    case BWITP:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createExplStrategy(system),
                                ClockStrategies.createBwItpStrategy(system));
                    case FWITP:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createExplStrategy(system),
                                ClockStrategies.createFwItpStrategy(system));
                    case LU:
                        return new CombinedStrategy<>(system,
                                DataStrategies.createExplStrategy(system),
                                ClockStrategies.createLuStrategy(system));
                    default:
                        throw new AssertionError();
                }

            default:
                throw new AssertionError();
        }
    }
}