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package net.jqwik.engine.execution;

import java.util.*;

import net.jqwik.api.*;
import net.jqwik.api.lifecycle.*;
import net.jqwik.api.lifecycle.ResolveParameterHook.*;
import net.jqwik.engine.properties.*;
import net.jqwik.engine.support.*;

public class ResolvingParametersGenerator implements ParametersGenerator {
	private final List propertyParameters;
	private final ForAllParametersGenerator forAllParametersGenerator;
	private final ParameterSupplierResolver parameterSupplierResolver;
	private int currentGenerationIndex = 0;

	public ResolvingParametersGenerator(
		List propertyParameters,
		ForAllParametersGenerator forAllParametersGenerator,
		ResolveParameterHook resolveParameterHook,
		PropertyLifecycleContext propertyLifecycleContext
	) {
		this.propertyParameters = propertyParameters;
		this.forAllParametersGenerator = forAllParametersGenerator;
		this.parameterSupplierResolver = new ParameterSupplierResolver(resolveParameterHook, propertyLifecycleContext);
	}

	@Override
	public boolean hasNext() {
		return forAllParametersGenerator.hasNext();
	}

	@Override
	public List> next(TryLifecycleContext context) {
		List> next = new ArrayList<>();
		List> forAllShrinkables = new ArrayList<>(forAllParametersGenerator.next());

		for (MethodParameter parameter : propertyParameters) {
			if (parameter.isAnnotated(ForAll.class)) {
				next.add(forAllShrinkables.get(0));
				forAllShrinkables.remove(0);
			} else {
				next.add(findResolvableParameter(parameter, context));
			}
		}

		currentGenerationIndex++;
		return next;
	}

	@Override
	public int edgeCasesTotal() {
		return forAllParametersGenerator.edgeCasesTotal();
	}

	@Override
	public int edgeCasesTried() {
		return forAllParametersGenerator.edgeCasesTried();
	}

	@Override
	public GenerationInfo generationInfo(String randomSeed) {
		return new GenerationInfo(randomSeed, currentGenerationIndex);
	}

	private Shrinkable