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package org.metricssampler.service;

import org.metricssampler.config.*;
import org.metricssampler.reader.MetricsReader;
import org.metricssampler.resources.SharedResource;
import org.metricssampler.sampler.Sampler;
import org.metricssampler.selector.MetricsSelector;
import org.metricssampler.values.ValueTransformer;
import org.metricssampler.writer.MetricsWriter;

/**
 * Base implementation intended for subclassing by extensions
 */
public abstract class AbstractLocalObjectFactory implements LocalObjectFactory {
	private GlobalObjectFactory globalFactory;

	@Override
	public void setGlobalFactory(final GlobalObjectFactory globalFactory) {
		this.globalFactory = globalFactory;
	}

	protected GlobalObjectFactory getGlobalFactory() {
		return globalFactory;
	}

	@Override
	public boolean supportsOutput(final OutputConfig config) {
		return false;
	}

	@Override
	public final MetricsWriter newWriterForOutput(final OutputConfig config) {
		if (!supportsOutput(config)) {
			throw new IllegalArgumentException("Unsupported writer config: " + config);
		}
		return doNewWriter(config);
	}

	protected MetricsWriter doNewWriter(final OutputConfig config) {
		throw new UnsupportedOperationException();
	}

	@Override
	public boolean supportsInput(final InputConfig config) {
		return false;
	}

	@Override
	public final MetricsReader newReaderForInput(final InputConfig config) {
		if (!supportsInput(config)) {
			throw new IllegalArgumentException("Unsupported reader config: " + config);
		}
		return doNewReader(config);
	}

	protected MetricsReader doNewReader(final InputConfig config) {
		throw new UnsupportedOperationException();
	}

	@Override
	public boolean supportsSelector(final SelectorConfig config) {
		return false;
	}

	@Override
	public final MetricsSelector newSelector(final SelectorConfig config) {
		if (!supportsSelector(config)) {
			throw new IllegalArgumentException("Unsupported selector: " + config);
		}
		return doNewSelector(config);
	}

	protected MetricsSelector doNewSelector(final SelectorConfig config) {
		throw new UnsupportedOperationException();
	}

	@Override
	public boolean supportsSampler(final SamplerConfig config) {
		return false;
	}

	@Override
	public final Sampler newSampler(final SamplerConfig config) {
		if (!supportsSampler(config)) {
			throw new IllegalArgumentException("Unsupported sampler config: " + config);
		}
		return doNewSampler(config);
	}

	protected Sampler doNewSampler(final SamplerConfig config) {
		throw new UnsupportedOperationException();
	}

	@Override
	public SharedResource newSharedResource(final SharedResourceConfig config, boolean suspended) {
		if (!supportsSharedResource(config)) {
			throw new IllegalArgumentException("Unsupported shared resource config: " + config);
		}
		return doNewSharedResource(config, suspended);
	}

	protected SharedResource doNewSharedResource(final SharedResourceConfig config, boolean suspended) {
		throw new UnsupportedOperationException();
	}

	@Override
	public boolean supportsSharedResource(final SharedResourceConfig config) {
		return false;
	}

	@Override
	public boolean supportsValueTransformer(final ValueTransformerConfig config) {
		return false;
	}

	@Override
	public final ValueTransformer newValueTransformer(final ValueTransformerConfig config) {
		if (!supportsValueTransformer(config)) {
			throw new IllegalArgumentException("Unsupported shared resource config: " + config);
		}
		return doNewValueTransformer(config);
	}

	protected ValueTransformer doNewValueTransformer(final ValueTransformerConfig config) {
		throw new UnsupportedOperationException();
	}

	
}