#include "gtest/gtest.h"
#include "storm-config.h"

#include "src/parser/FormulaParser.h"
#include "src/logic/Formulas.h"
#include "src/solver/GmmxxLinearEquationSolver.h"
#include "src/models/sparse/StandardRewardModel.h"
#include "src/modelchecker/prctl/SparseDtmcPrctlModelChecker.h"
#include "src/modelchecker/results/ExplicitQuantitativeCheckResult.h"
#include "src/settings/SettingsManager.h"
#include "src/settings/modules/GeneralSettings.h"
#include "src/settings/modules/GmmxxEquationSolverSettings.h"
#include "src/settings/modules/NativeEquationSolverSettings.h"
#include "src/settings/SettingMemento.h"
#include "src/parser/AutoParser.h"
#include "src/parser/PrismParser.h"
#include "src/builder/ExplicitModelBuilder.h"
#include "src/storage/expressions/ExpressionManager.h"

TEST(GmmxxDtmcPrctlModelCheckerTest, Die) {
    std::shared_ptr<storm::models::sparse::Model<double>> abstractModel = storm::parser::AutoParser<>::parseModel(STORM_CPP_BASE_PATH "/examples/dtmc/die/die.tra", STORM_CPP_BASE_PATH "/examples/dtmc/die/die.lab", "", STORM_CPP_BASE_PATH "/examples/dtmc/die/die.coin_flips.trans.rew");

    // A parser that we use for conveniently constructing the formulas.
    auto expManager = std::make_shared<storm::expressions::ExpressionManager>();
    storm::parser::FormulaParser formulaParser(expManager);

    ASSERT_EQ(abstractModel->getType(), storm::models::ModelType::Dtmc);

    std::shared_ptr<storm::models::sparse::Dtmc<double>> dtmc = abstractModel->as<storm::models::sparse::Dtmc<double>>();

    ASSERT_EQ(dtmc->getNumberOfStates(), 13ull);
    ASSERT_EQ(dtmc->getNumberOfTransitions(), 20ull);

    storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

    std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("P=? [F \"one\"]");

    std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(1.0 / 6.0, quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("P=? [F \"two\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult2 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(1.0 / 6.0, quantitativeResult2[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("P=? [F \"three\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult3 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(1.0 / 6.0, quantitativeResult3[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("R=? [F \"done\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult4 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(11.0 / 3.0, quantitativeResult4[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());
}

TEST(GmmxxDtmcPrctlModelCheckerTest, Crowds) {
    std::shared_ptr<storm::models::sparse::Model<double>> abstractModel = storm::parser::AutoParser<>::parseModel(STORM_CPP_BASE_PATH "/examples/dtmc/crowds/crowds5_5.tra", STORM_CPP_BASE_PATH "/examples/dtmc/crowds/crowds5_5.lab", "", "");

    ASSERT_EQ(abstractModel->getType(), storm::models::ModelType::Dtmc);

    // A parser that we use for conveniently constructing the formulas.
    
    auto expManager = std::make_shared<storm::expressions::ExpressionManager>();
    storm::parser::FormulaParser formulaParser(expManager);

    std::shared_ptr<storm::models::sparse::Dtmc<double>> dtmc = abstractModel->as<storm::models::sparse::Dtmc<double>>();

    ASSERT_EQ(8607ull, dtmc->getNumberOfStates());
    ASSERT_EQ(15113ull, dtmc->getNumberOfTransitions());

    storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

    std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("P=? [F \"observe0Greater1\"]");

    std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(0.3328800375801578281, quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("P=? [F \"observeIGreater1\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult2 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(0.1522194965, quantitativeResult2[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("P=? [F \"observeOnlyTrueSender\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult3 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(0.32153724292835045, quantitativeResult3[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());
}

TEST(GmmxxDtmcPrctlModelCheckerTest, SynchronousLeader) {
    std::shared_ptr<storm::models::sparse::Model<double>> abstractModel = storm::parser::AutoParser<>::parseModel(STORM_CPP_BASE_PATH "/examples/dtmc/synchronous_leader/leader4_8.tra", STORM_CPP_BASE_PATH "/examples/dtmc/synchronous_leader/leader4_8.lab", "", STORM_CPP_BASE_PATH "/examples/dtmc/synchronous_leader/leader4_8.pick.trans.rew");

    ASSERT_EQ(abstractModel->getType(), storm::models::ModelType::Dtmc);

    // A parser that we use for conveniently constructing the formulas.
    
    auto expManager = std::make_shared<storm::expressions::ExpressionManager>();
    storm::parser::FormulaParser formulaParser(expManager);

    std::shared_ptr<storm::models::sparse::Dtmc<double>> dtmc = abstractModel->as<storm::models::sparse::Dtmc<double>>();

    ASSERT_EQ(12400ull, dtmc->getNumberOfStates());
    ASSERT_EQ(16495ull, dtmc->getNumberOfTransitions());

    storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

    std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("P=? [F \"elected\"]");

    std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(1.0, quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("P=? [F<=20 \"elected\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult2 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(0.9999965911265462636, quantitativeResult2[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("R=? [F \"elected\"]");

    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult3 = result->asExplicitQuantitativeCheckResult<double>();

    EXPECT_NEAR(1.044879046, quantitativeResult3[0], storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());
}

TEST(GmmxxDtmcPrctlModelCheckerTest, LRASingleBscc) {
    storm::storage::SparseMatrixBuilder<double> matrixBuilder;
    std::shared_ptr<storm::models::sparse::Dtmc<double>> dtmc;

    // A parser that we use for conveniently constructing the formulas.
    
    auto expManager = std::make_shared<storm::expressions::ExpressionManager>();
    storm::parser::FormulaParser formulaParser(expManager);

    {
        matrixBuilder = storm::storage::SparseMatrixBuilder<double>(2, 2, 2);
        matrixBuilder.addNextValue(0, 1, 1.);
        matrixBuilder.addNextValue(1, 0, 1.);
        storm::storage::SparseMatrix<double> transitionMatrix = matrixBuilder.build();

        storm::models::sparse::StateLabeling ap(2);
        ap.addLabel("a");
        ap.addLabelToState("a", 1);

        dtmc.reset(new storm::models::sparse::Dtmc<double>(transitionMatrix, ap));

        storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

        std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("LRA=? [\"a\"]");

        std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
        storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

        EXPECT_NEAR(.5, quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(.5, quantitativeResult1[1], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
    }
    {
        matrixBuilder = storm::storage::SparseMatrixBuilder<double>(2, 2, 4);
        matrixBuilder.addNextValue(0, 0, .5);
        matrixBuilder.addNextValue(0, 1, .5);
        matrixBuilder.addNextValue(1, 0, .5);
        matrixBuilder.addNextValue(1, 1, .5);
        storm::storage::SparseMatrix<double> transitionMatrix = matrixBuilder.build();

        storm::models::sparse::StateLabeling ap(2);
        ap.addLabel("a");
        ap.addLabelToState("a", 1);

        dtmc.reset(new storm::models::sparse::Dtmc<double>(transitionMatrix, ap));

        storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

        std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("LRA=? [\"a\"]");

        std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
        storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

        EXPECT_NEAR(.5, quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(.5, quantitativeResult1[1], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
    }

    {
        matrixBuilder = storm::storage::SparseMatrixBuilder<double>(3, 3, 3);
        matrixBuilder.addNextValue(0, 1, 1);
        matrixBuilder.addNextValue(1, 2, 1);
        matrixBuilder.addNextValue(2, 0, 1);
        storm::storage::SparseMatrix<double> transitionMatrix = matrixBuilder.build();

        storm::models::sparse::StateLabeling ap(3);
        ap.addLabel("a");
        ap.addLabelToState("a", 2);

        dtmc.reset(new storm::models::sparse::Dtmc<double>(transitionMatrix, ap));

        storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

        std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("LRA=? [\"a\"]");

        std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
        storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

        EXPECT_NEAR(1. / 3., quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(1. / 3., quantitativeResult1[1], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(1. / 3., quantitativeResult1[2], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
    }
}

TEST(GmmxxDtmcPrctlModelCheckerTest, LRA) {
    storm::storage::SparseMatrixBuilder<double> matrixBuilder;
    std::shared_ptr<storm::models::sparse::Dtmc<double>> dtmc;

    // A parser that we use for conveniently constructing the formulas.
    
    auto expManager = std::make_shared<storm::expressions::ExpressionManager>();
    storm::parser::FormulaParser formulaParser(expManager);

    {
        matrixBuilder = storm::storage::SparseMatrixBuilder<double>(15, 15, 20, true);
        matrixBuilder.addNextValue(0, 1, 1);
        matrixBuilder.addNextValue(1, 4, 0.7);
        matrixBuilder.addNextValue(1, 6, 0.3);
        matrixBuilder.addNextValue(2, 0, 1);

        matrixBuilder.addNextValue(3, 5, 0.8);
        matrixBuilder.addNextValue(3, 9, 0.2);
        matrixBuilder.addNextValue(4, 3, 1);
        matrixBuilder.addNextValue(5, 3, 1);

        matrixBuilder.addNextValue(6, 7, 1);
        matrixBuilder.addNextValue(7, 8, 1);
        matrixBuilder.addNextValue(8, 6, 1);

        matrixBuilder.addNextValue(9, 10, 1);
        matrixBuilder.addNextValue(10, 9, 1);
        matrixBuilder.addNextValue(11, 9, 1);

        matrixBuilder.addNextValue(12, 5, 0.4);
        matrixBuilder.addNextValue(12, 8, 0.3);
        matrixBuilder.addNextValue(12, 11, 0.3);

        matrixBuilder.addNextValue(13, 7, 0.7);
        matrixBuilder.addNextValue(13, 12, 0.3);

        matrixBuilder.addNextValue(14, 12, 1);

        storm::storage::SparseMatrix<double> transitionMatrix = matrixBuilder.build();

        storm::models::sparse::StateLabeling ap(15);
        ap.addLabel("a");
        ap.addLabelToState("a", 1);
        ap.addLabelToState("a", 4);
        ap.addLabelToState("a", 5);
        ap.addLabelToState("a", 7);
        ap.addLabelToState("a", 11);
        ap.addLabelToState("a", 13);
        ap.addLabelToState("a", 14);

        dtmc.reset(new storm::models::sparse::Dtmc<double>(transitionMatrix, ap));

        storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

        std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("LRA=? [\"a\"]");

        std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
        storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();

        EXPECT_NEAR(0.3 / 3., quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(0.0, quantitativeResult1[3], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(1. / 3., quantitativeResult1[6], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(0.0, quantitativeResult1[9], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(0.3 / 3., quantitativeResult1[12], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(.79 / 3., quantitativeResult1[13], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
        EXPECT_NEAR(0.3 / 3., quantitativeResult1[14], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
    }
}

TEST(GmmxxDtmcPrctlModelCheckerTest, Conditional) {
    storm::prism::Program program = storm::parser::PrismParser::parse(STORM_CPP_TESTS_BASE_PATH "/functional/modelchecker/test_conditional.pm");
    
    std::shared_ptr<storm::models::sparse::Model<double>> model = storm::builder::ExplicitModelBuilder<double>(program, storm::generator::NextStateGeneratorOptions(true, true)).build();
    ASSERT_TRUE(model->getType() == storm::models::ModelType::Dtmc);
    ASSERT_EQ(4ul, model->getNumberOfStates());
    ASSERT_EQ(5ul, model->getNumberOfTransitions());

    std::shared_ptr<storm::models::sparse::Dtmc<double>> dtmc = model->as<storm::models::sparse::Dtmc<double>>();

    storm::modelchecker::SparseDtmcPrctlModelChecker<storm::models::sparse::Dtmc<double>> checker(*dtmc, std::make_unique<storm::solver::GmmxxLinearEquationSolverFactory<double>>());

    // A parser that we use for conveniently constructing the formulas.
    
    auto expManager = std::make_shared<storm::expressions::ExpressionManager>();
    storm::parser::FormulaParser formulaParser(expManager);
    std::shared_ptr<storm::logic::Formula const> formula = formulaParser.parseSingleFormulaFromString("P=? [F \"target\"]");
    
    std::unique_ptr<storm::modelchecker::CheckResult> result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult1 = result->asExplicitQuantitativeCheckResult<double>();
    EXPECT_NEAR(0.5, quantitativeResult1[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());

    formula = formulaParser.parseSingleFormulaFromString("P=? [F \"target\" || F \"condition\"]");
    
    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult2 = result->asExplicitQuantitativeCheckResult<double>();
    EXPECT_NEAR(storm::utility::one<double>(), quantitativeResult2[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
    
    formula = formulaParser.parseSingleFormulaFromString("R=? [F \"target\"]");
    
    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult3 = result->asExplicitQuantitativeCheckResult<double>();
    EXPECT_EQ(storm::utility::infinity<double>(), quantitativeResult3[0]);
    
    formula = formulaParser.parseSingleFormulaFromString("R=? [F \"target\" || F \"condition\"]");
    
    result = checker.check(*formula);
    storm::modelchecker::ExplicitQuantitativeCheckResult<double>& quantitativeResult4 = result->asExplicitQuantitativeCheckResult<double>();
    EXPECT_NEAR(storm::utility::one<double>(), quantitativeResult4[0], storm::settings::getModule<storm::settings::modules::NativeEquationSolverSettings>().getPrecision());
}