/*
    * Copyright 2012-2013 the original author or 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 org.springframework.security.oauth2.provider.approval;
  
  import java.util.Calendar;
  import java.util.Date;
  
  import com.fasterxml.jackson.annotation.JsonIgnore;
  import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  import com.fasterxml.jackson.databind.annotation.JsonSerialize;
  
  import org.springframework.security.oauth2.common.util.JsonDateDeserializer;
  import org.springframework.security.oauth2.common.util.JsonDateSerializer;
  
  /**
   * @author Dave Syer
   * @author Vidya Val
   *
   */
  @JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
  public class Approval {
  
  	private String userId;
  
  	private String clientId;
  
  	private String scope;
  
  	public enum ApprovalStatus {
  		APPROVED,
  		DENIED;
  	}
  
  	private ApprovalStatus status;
  	
  	private Date expiresAt;
  
  	private Date lastUpdatedAt;
  
  	public Approval(String userId, String clientId, String scope, int expiresIn, ApprovalStatus status) {
  		this(userId, clientId, scope, new Date(), status, new Date());
  		Calendar expiresAt = Calendar.getInstance();
  		expiresAt.add(Calendar.MILLISECOND, expiresIn);
  		setExpiresAt(expiresAt.getTime());
  	}
  
  	public Approval(String userId, String clientId, String scope, Date expiresAt, ApprovalStatus status) {
  		this(userId, clientId, scope, expiresAt, status, new Date());
  	}
  
  	public Approval(String userId, String clientId, String scope, Date expiresAt, ApprovalStatus status, Date lastUpdatedAt) {
  		setUserId(userId);
  		setClientId(clientId);
  		setScope(scope);
  		setExpiresAt(expiresAt);
  		this.status = status;
  		this.lastUpdatedAt = lastUpdatedAt;
  	}
  
  	protected Approval() { }
  
  	public String getUserId() {
  		return userId;
  	}
  
  	public void setUserId(String userId) {
  		this.userId = userId == null ? "" : userId;
  	}
  
  	public String getClientId() {
  		return clientId;
  	}
  
  	public void setClientId(String clientId) {
  		this.clientId = clientId == null ? "" : clientId;
  	}
  
  	public String getScope() {
  		return scope;
  	}
  
  	public void setScope(String scope) {
  		this.scope = scope == null ? "" : scope;
  	}
  
 	@JsonSerialize(using = JsonDateSerializer.class, include = JsonSerialize.Inclusion.NON_NULL)
 	public Date getExpiresAt() {
 		return expiresAt;
 	}
 
 	@JsonDeserialize(using = JsonDateDeserializer.class)
 	public void setExpiresAt(Date expiresAt) {
 		if (expiresAt == null) {
 			Calendar thirtyMinFromNow = Calendar.getInstance();
 			thirtyMinFromNow.add(Calendar.MINUTE, 30);
 			expiresAt = thirtyMinFromNow.getTime();
 		}
 		this.expiresAt = expiresAt;
 	}
 
 	@JsonSerialize(using = JsonDateSerializer.class, include = JsonSerialize.Inclusion.NON_NULL)
 	public Date getLastUpdatedAt() {
 		return lastUpdatedAt;
 	}
 
 	@JsonDeserialize(using = JsonDateDeserializer.class)
 	public void setLastUpdatedAt(Date lastUpdatedAt) {
 		this.lastUpdatedAt = lastUpdatedAt;
 	}
 
 	@JsonIgnore
 	public boolean isCurrentlyActive() {
 		return expiresAt != null && expiresAt.after(new Date());
 	}
 
 	@JsonIgnore
 	public boolean isApproved() {
 		return isCurrentlyActive() && status==ApprovalStatus.APPROVED;
 	}
 
 	public void setStatus(ApprovalStatus status) {
 		this.status = status;
 	}
 
 	public ApprovalStatus getStatus() {
 		return status;
 	}
 
 	@Override
 	public int hashCode() {
 		final int prime = 31;
 		int result = 1;
 		result = prime * result + userId.hashCode();
 		result = prime * result + clientId.hashCode();
 		result = prime * result + scope.hashCode();
 		result = prime * result + status.hashCode();
 		return result;
 	}
 
 	@Override
 	public boolean equals(Object o) {
 		if (o == null || !(o instanceof Approval)) {
 			return false;
 		}
 		Approval other = (Approval) o;
 		return userId.equals(other.userId) && clientId.equals(other.clientId) && scope.equals(other.scope) && status == other.status;
 	}
 
 	@Override
 	public String toString() {
 		return String.format("[%s, %s, %s, %s, %s, %s]", userId, scope, clientId, expiresAt, status.toString(), lastUpdatedAt);
 	}
 
 }