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/*
 * 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.teradata.benchto.driver;

import com.google.common.base.Objects;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;

import java.time.Duration;
import java.util.List;
import java.util.Map;
import java.util.Optional;

import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.Maps.newHashMap;
import static com.teradata.benchto.driver.loader.BenchmarkDescriptor.RESERVED_KEYWORDS;

public class Benchmark
{
    private String name;
    private String sequenceId;
    private String dataSource;
    private String environment;
    private List queries;
    private int runs;
    private int prewarmRuns;
    private int concurrency;
    private List beforeBenchmarkMacros;
    private List afterBenchmarkMacros;
    private List beforeExecutionMacros;
    private List afterExecutionMacros;
    private Map variables;
    private String uniqueName;
    private Optional frequency;

    private Benchmark()
    {
    }

    public String getName()
    {
        return name;
    }

    public String getUniqueName()
    {
        return uniqueName;
    }

    public void setUniqueName(String uniqueName)
    {
        this.uniqueName = uniqueName;
    }

    public String getSequenceId()
    {
        return sequenceId;
    }

    public String getDataSource()
    {
        return dataSource;
    }

    public String getEnvironment()
    {
        return environment;
    }

    public List getQueries()
    {
        return queries;
    }

    public int getRuns()
    {
        return runs;
    }

    public int getPrewarmRuns()
    {
        return prewarmRuns;
    }

    public int getConcurrency()
    {
        return concurrency;
    }

    public boolean isConcurrent()
    {
        return concurrency > 1;
    }

    public boolean isSerial()
    {
        return concurrency == 1;
    }

    public List getBeforeBenchmarkMacros()
    {
        return beforeBenchmarkMacros;
    }

    public List getAfterBenchmarkMacros()
    {
        return afterBenchmarkMacros;
    }

    public List getBeforeExecutionMacros()
    {
        return beforeExecutionMacros;
    }

    public List getAfterExecutionMacros()
    {
        return afterExecutionMacros;
    }

    public Map getVariables()
    {
        return variables;
    }

    public Map getNonReservedKeywordVariables()
    {
        Map nonReservedKeysVariables = newHashMap(getVariables());
        RESERVED_KEYWORDS.stream()
                .forEach(nonReservedKeysVariables::remove);
        return nonReservedKeysVariables;
    }

    public Optional getFrequency()
    {
        return frequency;
    }

    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("name", name)
                .add("uniqueName", uniqueName)
                .add("sequenceId", sequenceId)
                .add("dataSource", dataSource)
                .add("environment", environment)
                .add("queries", queries)
                .add("runs", runs)
                .add("prewarmRuns", prewarmRuns)
                .add("concurrency", concurrency)
                .add("frequency", frequency)
                .add("beforeBenchmarkMacros", beforeBenchmarkMacros)
                .add("afterBenchmarkMacros", afterBenchmarkMacros)
                .add("beforeExecutionMacros", beforeExecutionMacros)
                .add("afterExecutionMacros", afterExecutionMacros)
                .add("variables", variables)
                .toString();
    }

    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        Benchmark benchmark = (Benchmark) o;
        return Objects.equal(runs, benchmark.runs) &&
                Objects.equal(prewarmRuns, benchmark.prewarmRuns) &&
                Objects.equal(concurrency, benchmark.concurrency) &&
                Objects.equal(name, benchmark.name) &&
                Objects.equal(sequenceId, benchmark.sequenceId) &&
                Objects.equal(dataSource, benchmark.dataSource) &&
                Objects.equal(environment, benchmark.environment) &&
                Objects.equal(queries, benchmark.queries) &&
                Objects.equal(beforeBenchmarkMacros, benchmark.beforeBenchmarkMacros) &&
                Objects.equal(afterBenchmarkMacros, benchmark.afterBenchmarkMacros) &&
                Objects.equal(beforeExecutionMacros, benchmark.beforeExecutionMacros) &&
                Objects.equal(afterExecutionMacros, benchmark.afterExecutionMacros) &&
                Objects.equal(variables, benchmark.variables) &&
                Objects.equal(frequency, benchmark.frequency);
    }

    @Override
    public int hashCode()
    {
        return Objects.hashCode(name,
                sequenceId,
                dataSource,
                environment,
                queries,
                runs,
                prewarmRuns,
                concurrency,
                beforeBenchmarkMacros,
                afterBenchmarkMacros,
                beforeExecutionMacros,
                afterExecutionMacros,
                variables,
                frequency);
    }

    public static class BenchmarkBuilder
    {
        private final Benchmark benchmark = new Benchmark();

        public BenchmarkBuilder(String name, String sequenceId, List queries)
        {
            this.benchmark.name = name;
            this.benchmark.sequenceId = sequenceId;
            this.benchmark.queries = ImmutableList.copyOf(queries);
        }

        public BenchmarkBuilder withDataSource(String dataSource)
        {
            this.benchmark.dataSource = dataSource;
            return this;
        }

        public BenchmarkBuilder withEnvironment(String environment)
        {
            this.benchmark.environment = environment;
            return this;
        }

        public BenchmarkBuilder withRuns(int runs)
        {
            checkArgument(runs >= 1, "Runs must be greater of equal 1");
            this.benchmark.runs = runs;
            return this;
        }

        public BenchmarkBuilder withPrewarmRuns(int prewarmRuns)
        {
            this.benchmark.prewarmRuns = prewarmRuns;
            return this;
        }

        public BenchmarkBuilder withConcurrency(int concurrency)
        {
            checkArgument(concurrency >= 1, "Concurrency must be greater of equal 1");
            this.benchmark.concurrency = concurrency;
            return this;
        }

        public BenchmarkBuilder withBeforeBenchmarkMacros(List beforeBenchmarkMacros)
        {
            this.benchmark.beforeBenchmarkMacros = ImmutableList.copyOf(beforeBenchmarkMacros);
            return this;
        }

        public BenchmarkBuilder withAfterBenchmarkMacros(List afterBenchmarkMacros)
        {
            this.benchmark.afterBenchmarkMacros = ImmutableList.copyOf(afterBenchmarkMacros);
            return this;
        }

        public BenchmarkBuilder withBeforeExecutionMacros(List beforeExecutionMacros)
        {
            this.benchmark.beforeExecutionMacros = ImmutableList.copyOf(beforeExecutionMacros);
            return this;
        }

        public BenchmarkBuilder withAfterExecutionMacros(List afterExecutionMacros)
        {
            this.benchmark.afterExecutionMacros = ImmutableList.copyOf(afterExecutionMacros);
            return this;
        }

        public BenchmarkBuilder withVariables(Map variables)
        {
            this.benchmark.variables = ImmutableMap.copyOf(variables);
            return this;
        }

        public BenchmarkBuilder withFrequency(Optional frequency)
        {
            this.benchmark.frequency = frequency;
            return this;
        }

        public Benchmark build()
        {
            return benchmark;
        }
    }
}