package de.dogfire.dqfl.error;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Ergebnis einer DQFL-Validierung.
 */
public final class DqflValidationResult
{
	private final List<DqflError> errors;
	
	public DqflValidationResult(final List<DqflError> errors)
	{
		this.errors = Collections.unmodifiableList(new ArrayList<>(errors));
	}
	
	public boolean isValid()
	{
		return this.errors.stream().noneMatch(DqflError::isError);
	}
	
	public boolean hasWarnings()
	{
		return this.errors.stream().anyMatch(e -> !e.isError());
	}
	
	public List<DqflError> getErrors()
	{
		return this.errors;
	}
	
	public List<DqflError> getErrorsOnly()
	{
		return this.errors.stream().filter(DqflError::isError).toList();
	}
	
	public List<DqflError> getWarningsOnly()
	{
		return this.errors.stream().filter(e -> !e.isError()).toList();
	}
	
	@Override
	public String toString()
	{
		if(this.isValid() && !this.hasWarnings())
		{
			return "Validation OK";
		}
		final StringBuilder sb = new StringBuilder("Validation ");
		sb.append(this.isValid() ? "OK (with warnings)" : "FAILED");
		for(final DqflError error : this.errors)
		{
			sb.append("\n  ").append(error);
		}
		return sb.toString();
	}
}