// Copyright 2018 The Feed Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.android.libraries.feed.piet;

import android.content.Context;
import android.support.annotation.VisibleForTesting;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.libraries.feed.common.functional.Supplier;
import com.google.android.libraries.feed.common.time.Clock;
import com.google.android.libraries.feed.piet.PietStylesHelper.PietStylesHelperFactory;
import com.google.android.libraries.feed.piet.ui.RoundedCornerMaskCache;

/**
 * A state shared by instances of Cards and Slices. The state is accessed directly from the instance
 * instead of going through getX methods.
 *
 * <p>This is basically the Dagger state for Piet. If we can use Dagger, replace this with Dagger.
 */
class AdapterParameters {
  // TODO: Make these configurable instead of constants.
  private static final int DEFAULT_TEMPLATE_POOL_SIZE = 100;
  private static final int DEFAULT_NUM_TEMPLATE_POOLS = 30;

  final Context context;
  final Supplier</*@Nullable*/ ViewGroup> parentViewSupplier;
  final HostProviders hostProviders;
  final ParameterizedTextEvaluator templatedStringEvaluator;
  final ElementAdapterFactory elementAdapterFactory;
  final TemplateBinder templateBinder;
  final StyleProvider defaultStyleProvider;
  final Clock clock;
  final PietStylesHelperFactory pietStylesHelperFactory;
  final RoundedCornerMaskCache roundedCornerMaskCache;
  final boolean useLegacyRoundedCornerImpl;
  final boolean useOutlineRoundedCornerImpl;

  // Doesn't like passing "this" to the new ElementAdapterFactory; however, nothing in the factory's
  // construction will reference the elementAdapterFactory member of this, so should be safe.
  @SuppressWarnings("initialization")
  public AdapterParameters(
      Context context,
      Supplier</*@Nullable*/ ViewGroup> parentViewSupplier,
      HostProviders hostProviders,
      Clock clock,
      boolean useLegacyRoundedCornerImpl,
      boolean useOutlineRoundedCornerImpl) {
    this.context = context;
    this.parentViewSupplier = parentViewSupplier;
    this.hostProviders = hostProviders;
    this.clock = clock;

    templatedStringEvaluator = new ParameterizedTextEvaluator(clock);

    KeyedRecyclerPool<ElementAdapter<? extends View, ?>> templateRecyclerPool =
        new KeyedRecyclerPool<>(DEFAULT_NUM_TEMPLATE_POOLS, DEFAULT_TEMPLATE_POOL_SIZE);
    elementAdapterFactory = new ElementAdapterFactory(context, this, templateRecyclerPool);
    templateBinder = new TemplateBinder(templateRecyclerPool, elementAdapterFactory);

    this.defaultStyleProvider = new StyleProvider(hostProviders.getAssetProvider());

    this.pietStylesHelperFactory = new PietStylesHelperFactory();
    this.roundedCornerMaskCache = new RoundedCornerMaskCache();

    this.useLegacyRoundedCornerImpl = useLegacyRoundedCornerImpl;
    this.useOutlineRoundedCornerImpl = useOutlineRoundedCornerImpl;
  }

  /** Testing-only constructor for mocking the internally-constructed objects. */
  @VisibleForTesting
  AdapterParameters(
      Context context,
      Supplier</*@Nullable*/ ViewGroup> parentViewSupplier,
      HostProviders hostProviders,
      ParameterizedTextEvaluator templatedStringEvaluator,
      ElementAdapterFactory elementAdapterFactory,
      TemplateBinder templateBinder,
      Clock clock) {
    this(
        context,
        parentViewSupplier,
        hostProviders,
        templatedStringEvaluator,
        elementAdapterFactory,
        templateBinder,
        clock,
        new PietStylesHelperFactory(),
        new RoundedCornerMaskCache(),
        true,
        true);
  }

  /** Testing-only constructor for mocking the internally-constructed objects. */
  @VisibleForTesting
  AdapterParameters(
      Context context,
      Supplier</*@Nullable*/ ViewGroup> parentViewSupplier,
      HostProviders hostProviders,
      ParameterizedTextEvaluator templatedStringEvaluator,
      ElementAdapterFactory elementAdapterFactory,
      TemplateBinder templateBinder,
      Clock clock,
      PietStylesHelperFactory pietStylesHelperFactory,
      RoundedCornerMaskCache maskCache,
      boolean useLegacyRoundedCornerImpl,
      boolean useOutlineRoundedCornerImpl) {
    this.context = context;
    this.parentViewSupplier = parentViewSupplier;
    this.hostProviders = hostProviders;

    this.templatedStringEvaluator = templatedStringEvaluator;
    this.elementAdapterFactory = elementAdapterFactory;
    this.templateBinder = templateBinder;
    this.defaultStyleProvider = new StyleProvider(hostProviders.getAssetProvider());
    this.clock = clock;
    this.pietStylesHelperFactory = pietStylesHelperFactory;
    this.roundedCornerMaskCache = maskCache;
    this.useLegacyRoundedCornerImpl = useLegacyRoundedCornerImpl;
    this.useOutlineRoundedCornerImpl = useOutlineRoundedCornerImpl;
  }
}