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/*
 * Copyright 2017-2024 original 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
 *
 * https://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 io.micronaut.http.server.binding;

import io.micronaut.core.annotation.Internal;
import io.micronaut.core.annotation.Nullable;
import io.micronaut.core.convert.ArgumentConversionContext;
import io.micronaut.core.propagation.MutablePropagatedContext;
import io.micronaut.core.type.Argument;
import io.micronaut.http.HttpRequest;
import io.micronaut.http.HttpResponse;
import io.micronaut.http.bind.binders.TypedRequestArgumentBinder;
import io.micronaut.http.filter.FilterArgumentBinderPredicate;
import io.micronaut.web.router.RouteAttributes;
import io.micronaut.web.router.RouteInfo;
import io.micronaut.web.router.RouteMatch;
import jakarta.inject.Singleton;

/**
 * Argument binder for {@link io.micronaut.web.router.RouteInfo} objects.
 *
 * @since 4.8.0
 * @author Denis Stepanov
 */
@Singleton
@Internal
final class RouteInfoArgumentBinder implements TypedRequestArgumentBinder>, FilterArgumentBinderPredicate {
    RouteInfoArgumentBinder() {
    }

    @Override
    public Argument> argumentType() {
        return (Argument) Argument.of(RouteInfo.class);
    }

    @Override
    public BindingResult> bind(ArgumentConversionContext> context, HttpRequest source) {
        return () -> RouteAttributes.getRouteInfo(source)
            .or(() -> RouteAttributes.getRouteMatch(source).>map(RouteMatch::getRouteInfo));
    }

    @Override
    public boolean test(Argument argument, MutablePropagatedContext mutablePropagatedContext, HttpRequest request, @Nullable HttpResponse response, @Nullable Throwable failure) {
        return argument.isNullable() || RouteAttributes.getRouteMatch(request).isPresent() || RouteAttributes.getRouteInfo(request).isPresent();
    }
}