/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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 org.apache.juneau.http.header;
  
  import static java.time.format.DateTimeFormatter.*;
  import static java.time.temporal.ChronoUnit.*;
  import static org.apache.juneau.TestUtils.*;
  import static org.apache.juneau.http.HttpHeaders.*;
  
  import java.io.*;
  import java.time.*;
  import java.util.function.*;
  
  import org.apache.juneau.*;
  import org.apache.juneau.annotation.*;
  import org.apache.juneau.common.utils.*;
  import org.apache.juneau.http.annotation.*;
  import org.apache.juneau.rest.annotation.*;
  import org.apache.juneau.rest.client.*;
  import org.apache.juneau.rest.mock.*;
  import org.junit.jupiter.api.*;
  
  class Date_Test  extends TestBase{
  
  	private static final String HEADER = "Date";
  	private static final String VALUE = "Sat, 29 Oct 1994 19:43:31 GMT";
  	private static final ZonedDateTime PARSED = ZonedDateTime.from(RFC_1123_DATE_TIME.parse(VALUE)).truncatedTo(SECONDS);
  
  	@Rest
  	public static class A {
  		@RestOp
  		public StringReader get(@Header(name=HEADER) @Schema(cf="multi") String[] h) {
  			return reader(h == null ? "null" : Utils.join(h, ','));
  		}
  	}
  
  	//------------------------------------------------------------------------------------------------------------------
  	// Method tests
  	//------------------------------------------------------------------------------------------------------------------
  
  	@Test void a01_basic() throws Exception {
  		var c = client().build();
  
  		// Normal usage.
  		c.get().header(date(VALUE)).run().assertContent(VALUE);
  		c.get().header(date(VALUE)).run().assertContent(VALUE);
  		c.get().header(date(PARSED)).run().assertContent(VALUE);
  		c.get().header(date(()->PARSED)).run().assertContent(VALUE);
  
  		// Invalid usage.
  		c.get().header(date((String)null)).run().assertContent().isEmpty();
  		c.get().header(date((Supplier<ZonedDateTime>)null)).run().assertContent().isEmpty();
  		c.get().header(date(()->null)).run().assertContent().isEmpty();
  	}
  
  	//------------------------------------------------------------------------------------------------------------------
  	// Helper methods.
  	//------------------------------------------------------------------------------------------------------------------
  
  	private static RestClient.Builder client() {
  		return MockRestClient.create(A.class);
  	}
  }