package org.gradle.internal;

import org.gradle.api.Action;
import org.gradle.api.Transformer;

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.util.regex.Pattern;

/**
 * Utility transformers.
 */
public abstract class Transformers {

    /**
     * Creates a transformer that simply type casts the input to the given output type.
     *

// the first transformer.
func (t *prefixTransformers) TransformFromStorage(ctx context.Context, data []byte, dataCtx Context) ([]byte, bool, error) {
	start := time.Now()
	var errs []error
	for i, transformer := range t.transformers {
		if bytes.HasPrefix(data, transformer.Prefix) {
			result, stale, err := transformer.Transformer.TransformFromStorage(ctx, data[len(transformer.Prefix):], dataCtx)

	testErr := fmt.Errorf("test error")
	transformErr := fmt.Errorf("transform error")
	transformers := []PrefixTransformer{
		{Prefix: []byte("first:"), Transformer: &testTransformer{from: []byte("value1")}},
		{Prefix: []byte("second:"), Transformer: &testTransformer{from: []byte("value2")}},
		{Prefix: []byte("fails:"), Transformer: &testTransformer{err: transformErr}},

        T value = original;
        for (Transformer<T, T> transformer : transformers) {
            value = type.cast(transformer.transform(value));
        }
        return value;
    }

    public void add(Transformer<T, T> transformer) {
        transformers.add(transformer);
    }

    public void add(final Closure transformer) {
        transformers.add(new Transformer<T, T>() {
            @Override

	// If we're re-called, we need to be able to return the pristine version.
	if newObj != nil {
		newObj = newObj.DeepCopyObject()
	}

	// Allow any configured transformers to update the new object
	for _, transformer := range i.transformers {
		newObj, err = transformer(ctx, newObj, oldObj)
		if err != nil {
			return nil, err
		}
	}

	return newObj, nil
}

                }
            }
        });
    }

    public void add(final Transformer<String, String> transformer) {
        transformers.add(new Transformer<Reader, Reader>() {
            @Override
            public Reader transform(Reader reader) {
                return new LineFilter(reader, transformer);
            }
        });
    }

    public void add(final Closure closure) {

	if transformer := transformerOverrides[resource]; transformer != nil {
		return transformer
	}

	if transformer := transformerOverrides[schema.GroupResource{
		Group:    resource.Group,
		Resource: "*",
	}]; transformer != nil {
		return transformer
	}

	if t.cacheEnabled {
		t.transformers.Add(base64.StdEncoding.EncodeToString(encKey), transformer)
		metrics.RecordDekCacheFillPercent(float64(t.transformers.Len()) / float64(t.cacheSize))
	}
	return transformer, nil
}

// getTransformer fetches the transformer corresponding to encKey from cache, if it exists.
func (t *envelopeTransformer) getTransformer(encKey []byte) value.Transformer {
	if !t.cacheEnabled {
		return nil

		encryptionConfiguration *encryptionconfig.EncryptionConfiguration
		configChanged           bool
	)

	// get context to close the new transformers (on error cases and on the next reload)
	// serverCtx is attached to the API server's lifecycle so we will always close transformers on shut down
	ctx, closeTransformers := context.WithCancel(serverCtx)

	defer func() {
		// TODO can work queue metrics help here?

			return
		}

		userInfo, _ := request.UserFrom(ctx)
		transformers := []rest.TransformFunc{}

		// allows skipping managedFields update if the resulting object is too big
		shouldUpdateManagedFields := true
		admit = fieldmanager.NewManagedFieldsValidatingAdmissionController(admit)
		transformers = append(transformers, func(_ context.Context, newObj, liveObj runtime.Object) (runtime.Object, error) {