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package modes3.run

import com.google.common.collect.ImmutableList
import com.google.common.collect.ImmutableSet
import hu.bme.mit.inf.dslreasoner.ecore2logic.EReferenceMapper_RelationsOverTypes_Trace
import hu.bme.mit.inf.dslreasoner.ecore2logic.Ecore2Logic
import hu.bme.mit.inf.dslreasoner.ecore2logic.Ecore2LogicConfiguration
import hu.bme.mit.inf.dslreasoner.ecore2logic.EcoreMetamodelDescriptor
import hu.bme.mit.inf.dslreasoner.ecore2logic.ecore2logicannotations.Ecore2logicannotationsFactory
import hu.bme.mit.inf.dslreasoner.ecore2logic.ecore2logicannotations.Ecore2logicannotationsPackage
import hu.bme.mit.inf.dslreasoner.logic.model.builder.LogicProblemBuilder
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.LogiclanguagePackage
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.TypeDefinition
import hu.bme.mit.inf.dslreasoner.logic.model.logicproblem.LogicproblemPackage
import hu.bme.mit.inf.dslreasoner.logic.model.logicresult.ModelResult
import hu.bme.mit.inf.dslreasoner.viatra2logic.Viatra2Logic
import hu.bme.mit.inf.dslreasoner.viatra2logic.Viatra2LogicConfiguration
import hu.bme.mit.inf.dslreasoner.viatra2logic.ViatraQuerySetDescriptor
import hu.bme.mit.inf.dslreasoner.viatra2logic.viatra2logicannotations.Viatra2LogicAnnotationsPackage
import hu.bme.mit.inf.dslreasoner.viatrasolver.logic2viatra.TypeInferenceMethod
import hu.bme.mit.inf.dslreasoner.viatrasolver.logic2viatra.cardinality.PolyhedralScopePropagatorConstraints
import hu.bme.mit.inf.dslreasoner.viatrasolver.logic2viatra.cardinality.PolyhedralScopePropagatorSolver
import hu.bme.mit.inf.dslreasoner.viatrasolver.logic2viatra.cardinality.ScopePropagatorStrategy
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretation2logic.InstanceModel2Logic
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialComplexTypeInterpretation
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialInterpretation
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialinterpretationPackage
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.visualisation.PartialInterpretation2Gml
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.StateCoderStrategy
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.ViatraReasoner
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.ViatraReasonerConfiguration
import hu.bme.mit.inf.dslreasoner.visualisation.pi2graphviz.GraphvizVisualiser
import hu.bme.mit.inf.dslreasoner.workspace.FileSystemWorkspace
import java.util.List
import modes3.Modes3Factory
import modes3.Modes3Package
import modes3.queries.Modes3Queries
import org.eclipse.emf.ecore.EClass
import org.eclipse.emf.ecore.EObject
import org.eclipse.emf.ecore.resource.Resource
import org.eclipse.emf.ecore.xmi.impl.XMIResourceFactoryImpl
import org.eclipse.viatra.query.patternlanguage.emf.EMFPatternLanguageStandaloneSetup
import org.eclipse.viatra.query.runtime.api.ViatraQueryEngineOptions
import org.eclipse.viatra.query.runtime.localsearch.matcher.integration.LocalSearchEMFBackendFactory
import org.eclipse.viatra.query.runtime.rete.matcher.ReteBackendFactory
import org.eclipse.xtend.lib.annotations.FinalFieldsConstructor
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.RelationDefinition
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.BinaryElementRelationLink

@FinalFieldsConstructor
class Modes3ModelGenerator {
	val MonitoringQuery monitoringQuery
	val int modelSize

	val ecore2Logic = new Ecore2Logic
	val instanceModel2Logic = new InstanceModel2Logic
	val viatra2Logic = new Viatra2Logic(ecore2Logic)
	val solver = new ViatraReasoner
	extension val LogicProblemBuilder = new LogicProblemBuilder

	def generate() {
		val metamodel = createMetamodelDescriptor()
		val metamodelLogic = ecore2Logic.transformMetamodel(metamodel, new Ecore2LogicConfiguration)
		val segment = ecore2Logic.TypeofEClass(metamodelLogic.trace, Modes3Package.eINSTANCE.segment)
		val connectedTo = ecore2Logic.relationOfReference(metamodelLogic.trace,
			Modes3Package.eINSTANCE.segment_ConnectedTo)
		val connectedToIndicator = (metamodelLogic.trace.
			referenceMapperTrace as EReferenceMapper_RelationsOverTypes_Trace).indicators.get(
			Modes3Package.eINSTANCE.segment_ConnectedTo)
		val inverseAssertion = Assertion(
			'''oppositeReference «connectedTo.name» «connectedTo.name»''',
			Forall[
				val src = addVar('''src''', segment)
				val trg = addVar('''trg''', segment)
				connectedToIndicator.call(src, trg) <=> connectedToIndicator.call(trg, src)
			]
		)
		metamodelLogic.output.assertions += inverseAssertion
		val inverseAnnotation = Ecore2logicannotationsFactory.eINSTANCE.createInverseRelationAssertion => [
			target = inverseAssertion
			inverseA = connectedTo
			inverseB = connectedTo
		]
		metamodelLogic.output.annotations += inverseAnnotation
		val initialModel = loadInitialModel()
		val initialModelLogic = instanceModel2Logic.transform(metamodelLogic, initialModel)
		val queries = loadQueries
		val logic = viatra2Logic.transformQueries(queries, initialModelLogic, new Viatra2LogicConfiguration)
		val config = new ViatraReasonerConfiguration => [
			runtimeLimit = 3600
			typeScopes => [
				minNewElements = modelSize
				maxNewElements = modelSize
				minNewElementsByType => [
					put(ecore2Logic.TypeofEClass(metamodelLogic.trace, Modes3Package.eINSTANCE.turnout), 1)
				]
				maxNewElementsByType => [
					put(ecore2Logic.TypeofEClass(metamodelLogic.trace, Modes3Package.eINSTANCE.train), 5)
				]
			]
			solutionScope.numberOfRequiredSolutions = 1
			nameNewElements = false
			typeInferenceMethod = TypeInferenceMethod.PreliminaryAnalysis
			stateCoderStrategy = StateCoderStrategy::Neighbourhood
			scopePropagatorStrategy = new ScopePropagatorStrategy.Polyhedral(
				PolyhedralScopePropagatorConstraints.Relational, PolyhedralScopePropagatorSolver.Clp)
//			unitPropagationPatternGenerators += new Modes3UnitPropagationGenerator(ecore2Logic, metamodelLogic.trace)
			debugConfiguration.partialInterpretatioVisualiser = null
		]
		val workspace = new FileSystemWorkspace("output/", "")
		val solution = solver.solve(logic.output, config, workspace)
		if (solution instanceof ModelResult) {
			println("Saving generated solutions")
			val representations = solution.representation
			for (representationIndex : 0 ..< representations.size) {
				val representation = representations.get(representationIndex)
				val representationNumber = representationIndex + 1
				if (representation instanceof PartialInterpretation) {
					workspace.writeModel(representation, '''solution«representationNumber».partialinterpretation''')
					val partialInterpretation2GML = new PartialInterpretation2Gml
					val gml = partialInterpretation2GML.transform(representation)
					workspace.writeText('''solution«representationNumber».gml''', gml)
					if (representation.newElements.size < 160) {
						if (representation instanceof PartialInterpretation) {
							representation.problem.types.forEach[println(name)]
							val rootType = (representation.problem.types.findFirst [
								name == "Modes3ModelRoot class DefinedPart"
							] as TypeDefinition)
							val rootIntepretation = representation.partialtypeinterpratation.filter(
								PartialComplexTypeInterpretation).findFirst [
								interpretationOf.name == "Modes3ModelRoot class"
							]
							rootIntepretation.elements.removeAll(rootType.elements)
							representation.problem.elements.removeAll(rootType.elements)
							for (relationInterpretation : representation.partialrelationinterpretation) {
								relationInterpretation.relationlinks.removeIf [ link |
									if (link instanceof BinaryElementRelationLink) {
										rootType.elements.contains(link.param1) || rootType.elements.contains(link.param2)
									} else {
										false
									}
								]
							}
							rootType.elements.clear
						}
						val visualiser = new GraphvizVisualiser
						val visualisation = visualiser.visualiseConcretization(representation)
						visualisation.writeToFile(workspace, '''solution«representationNumber».png''')
					}
				} else {
					workspace.writeText('''solution«representationNumber».txt''', representation.toString)
				}
			}
		} else {
			println("Failed to solver problem")
			val partial = logic.output
			workspace.writeModel(partial, "solution.partialinterpretation")
		}
	}

	static def createMetamodelDescriptor() {
		val eClasses = ImmutableList.copyOf(Modes3Package.eINSTANCE.EClassifiers.filter(EClass))
		new EcoreMetamodelDescriptor(
			eClasses,
			emptySet,
			false,
			emptyList,
			emptyList,
			ImmutableList.copyOf(eClasses.flatMap[EReferences]),
			emptyList
		)
	}

	static def List<EObject> loadInitialModel() {
		#[Modes3Factory.eINSTANCE.createModes3ModelRoot]
	}

	def loadQueries() {
		val patternsBuilder = ImmutableList.builder
		patternsBuilder.addAll(Modes3Queries.instance.specifications)
		val patterns = patternsBuilder.build
		val validationPatterns = ImmutableSet.copyOf(patterns.filter [ pattern |
			pattern.allAnnotations.exists[name == "Constraint"]
		])
		new ViatraQuerySetDescriptor(
			patterns,
			validationPatterns,
			emptyMap
		)
	}

	def static init() {
		EMFPatternLanguageStandaloneSetup.doSetup
		ViatraQueryEngineOptions.setSystemDefaultBackends(ReteBackendFactory.INSTANCE, ReteBackendFactory.INSTANCE,
			LocalSearchEMFBackendFactory.INSTANCE)
		LogiclanguagePackage.eINSTANCE.class
		LogicproblemPackage.eINSTANCE.class
		PartialinterpretationPackage.eINSTANCE.class
		Ecore2logicannotationsPackage.eINSTANCE.class
		Viatra2LogicAnnotationsPackage.eINSTANCE.class
		Resource.Factory.Registry.INSTANCE.extensionToFactoryMap.put("ecore", new XMIResourceFactoryImpl)
		Resource.Factory.Registry.INSTANCE.extensionToFactoryMap.put("logicproblem", new XMIResourceFactoryImpl)
		Resource.Factory.Registry.INSTANCE.extensionToFactoryMap.put("partialinterpretation",
			new XMIResourceFactoryImpl)
	}

	def static void main(String[] args) {
		if (args.length != 2) {
			System.err.println("Usage: <query> <model size>")
		}
		val monitoringQuery = MonitoringQuery.valueOf(args.get(0))
		val modelSize = Integer.parseInt(args.get(1))
		init()
		val generator = new Modes3ModelGenerator(monitoringQuery, modelSize)
		generator.generate()
	}

	private static enum MonitoringQuery {
		closeTrains,
		misalignedTurnout
	}
}