/*
 * ============LICENSE_START==========================================
 * ===================================================================
 * Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
 * ===================================================================
 * 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.
 * ============LICENSE_END============================================
 *
 * ECOMP and OpenECOMP are trademarks
 * and service marks of AT&T Intellectual Property.
 *
 */

package org.openecomp.mso.cloud;

import com.woorea.openstack.keystone.model.Authentication;
import com.woorea.openstack.keystone.model.authentication.UsernamePassword;
import java.security.GeneralSecurityException;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.map.annotate.JsonDeserialize;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.openecomp.mso.cloud.authentication.AuthenticationMethodFactory;
import org.openecomp.mso.cloud.authentication.AuthenticationWrapper;
import org.openecomp.mso.cloud.authentication.wrappers.RackspaceAPIKeyWrapper;
import org.openecomp.mso.cloud.authentication.wrappers.UsernamePasswordWrapper;
import org.openecomp.mso.logger.MessageEnum;
import org.openecomp.mso.logger.MsoLogger;
import org.openecomp.mso.openstack.exceptions.MsoException;
import org.openecomp.mso.openstack.utils.MsoKeystoneUtils;
import org.openecomp.mso.openstack.utils.MsoTenantUtils;
import org.openecomp.mso.openstack.utils.MsoTenantUtilsFactory;
import org.openecomp.mso.utils.CryptoUtils;

/**
 * JavaBean JSON class for a CloudIdentity. This bean represents a cloud identity
 * service instance (i.e. a DCP node) in the NVP/AIC cloud. It will be loaded via
 * CloudConfig object, of which it is a component (a CloudConfig JSON configuration
 * file may contain multiple CloudIdentity definitions).
 *
 * Note that this is only used to access Cloud Configurations loaded from a
 * JSON config file, so there are no explicit setters.
 *
 */
public class CloudIdentity {

	// This block is needed to trigger the class loader so that static initialization
	// of both inner static classes occur. This is required when the Json Deserializer
	// gets called and no access to any of these inner classes happened yet.
	static {
		IdentityServerType.bootstrap();
		IdentityAuthenticationType.bootstrap();
	}
	
    private static MsoLogger LOGGER = MsoLogger.getMsoLogger (MsoLogger.Catalog.RA);

    public final static class IdentityServerType extends IdentityServerTypeAbstract {

    	public static final IdentityServerType KEYSTONE = new IdentityServerType("KEYSTONE", MsoKeystoneUtils.class);

    	public IdentityServerType(String serverType, Class<? extends MsoTenantUtils> utilsClass) {
    		super(serverType, utilsClass);
    	}

		public static final void bootstrap() {}
    }

    public static final class IdentityAuthenticationType extends IdentityAuthenticationTypeAbstract {
    	
    	public static final IdentityAuthenticationType USERNAME_PASSWORD = new IdentityAuthenticationType("USERNAME_PASSWORD", UsernamePasswordWrapper.class);
    	
    	public static final IdentityAuthenticationType RACKSPACE_APIKEY = new IdentityAuthenticationType("RACKSPACE_APIKEY", RackspaceAPIKeyWrapper.class);
    	
    	public IdentityAuthenticationType(String identityType, Class<? extends AuthenticationWrapper> wrapperClass) {
    		super(identityType, wrapperClass);
    	}

		public static final void bootstrap() {}
    }
    
    @JsonProperty
    private String id;
    @JsonProperty("identity_url")
    private String identityUrl;
    @JsonProperty("mso_id")
    private String msoId;
    @JsonProperty("mso_pass")
    private String msoPass;
    @JsonProperty("admin_tenant")
    private String adminTenant;
    @JsonProperty("member_role")
    private String memberRole;
    @JsonProperty("tenant_metadata")
    private Boolean tenantMetadata;
    @JsonProperty("identity_server_type")
    @JsonSerialize(using=IdentityServerTypeJsonSerializer.class)
    @JsonDeserialize(using=IdentityServerTypeJsonDeserializer.class)
    private IdentityServerType identityServerType;
    @JsonProperty("identity_authentication_type")
    @JsonSerialize(using=IdentityAuthenticationTypeJsonSerializer.class)
    @JsonDeserialize(using=IdentityAuthenticationTypeJsonDeserializer.class)
    private IdentityAuthenticationType identityAuthenticationType;
    
    private static String cloudKey = "aa3871669d893c7fb8abbcda31b88b4f";

    public CloudIdentity () {
    }

    public String getId () {
        return id;
    }

    public void setId (String id) {
        this.id = id;
    }

    public String getKeystoneUrl (String regionId, String msoPropID) throws MsoException {
    	if (IdentityServerType.KEYSTONE.equals(this.identityServerType)) {
    		return this.identityUrl;
    	} else {
    		if (this.identityServerType == null) {
    			return null;
    		}
    		MsoTenantUtils tenantUtils = new MsoTenantUtilsFactory(msoPropID).getTenantUtilsByServerType(this.identityServerType.toString());
    		if (tenantUtils != null) {
    			return tenantUtils.getKeystoneUrl(regionId, msoPropID, this);
    		} else {
    			return null;
    		}
    	}
    }

	public Authentication getAuthentication() {
    	if (this.getIdentityAuthenticationType() != null) {
	    		return AuthenticationMethodFactory.getAuthenticationFor(this);
    	} else {
    		return new UsernamePassword(this.getMsoId(), this.getMsoPass());
    	}
    }

    public void setKeystoneUrl (String url) {
    	if (IdentityServerType.KEYSTONE.equals(this.identityServerType)) {
    		this.identityUrl = url;
    	}
    }
    
    public String getIdentityUrl() {
    	return this.identityUrl;
    }
    public void setIdentityUrl(String url) {
    	this.identityUrl = url;
    }

    public String getMsoId () {
        return msoId;
    }

    public void setMsoId (String id) {
        this.msoId = id;
    }

    public String getMsoPass () {
        try {
            return CryptoUtils.decrypt (msoPass, cloudKey);
        } catch (GeneralSecurityException e) {
            LOGGER.error (MessageEnum.RA_GENERAL_EXCEPTION, "", "", MsoLogger.ErrorCode.BusinessProcesssError, "Exception in getMsoPass", e);
            return null;
        }
    }

    public void setMsoPass (String pwd) {
        this.msoPass = pwd;
    }

    public String getAdminTenant () {
        return adminTenant;
    }

    public void setAdminTenant (String tenant) {
        this.adminTenant = tenant;
    }

    public String getMemberRole () {
        return memberRole;
    }

    public void setMemberRole (String role) {
        this.memberRole = role;
    }

    public boolean hasTenantMetadata () {
        return tenantMetadata;
    }

    public void setTenantMetadata (boolean meta) {
        this.tenantMetadata = meta;
    }
    
    public IdentityServerType getIdentityServerType() {
    	return this.identityServerType;
    }
    public void setIdentityServerType(IdentityServerType ist) {
    	this.identityServerType = ist;
    }
    public String getIdentityServerTypeAsString() {
    	return this.identityServerType.toString();
    }
    /**
	 * @return the identityAuthenticationType
	 */
	public IdentityAuthenticationType getIdentityAuthenticationType() {
		return identityAuthenticationType;
	}

	/**
	 * @param identityAuthenticationType the identityAuthenticationType to set
	 */
	public void setIdentityAuthenticationType(IdentityAuthenticationType identityAuthenticationType) {
		this.identityAuthenticationType = identityAuthenticationType;
	}

	@Override
    public String toString () {
		return "Cloud Identity Service: id=" + id +
			", identityUrl=" + this.identityUrl +
			", msoId=" + msoId +
			", adminTenant=" + adminTenant +
			", memberRole=" + memberRole +
			", tenantMetadata=" + tenantMetadata +
			", identityServerType=" + (identityServerType == null ? "null" : identityServerType.toString()) +
			", identityAuthenticationType=" + (identityAuthenticationType == null ? "null" : identityAuthenticationType.toString());
	}

    public static String encryptPassword (String msoPass) {
        try {
            return CryptoUtils.encrypt (msoPass, cloudKey);
        } catch (GeneralSecurityException e) {
            LOGGER.error (MessageEnum.RA_GENERAL_EXCEPTION, "", "", MsoLogger.ErrorCode.BusinessProcesssError, "Exception in encryptPassword", e);
            return null;
        }
    }


	@Override
	public CloudIdentity clone() {
		CloudIdentity cloudIdentityCopy = new CloudIdentity();

		cloudIdentityCopy.id = this.id;
		cloudIdentityCopy.identityUrl = this.identityUrl;
		cloudIdentityCopy.msoId = this.msoId;
		cloudIdentityCopy.msoPass = this.msoPass;
		cloudIdentityCopy.adminTenant = this.adminTenant;
		cloudIdentityCopy.memberRole = this.memberRole;
		cloudIdentityCopy.tenantMetadata = this.tenantMetadata;
		cloudIdentityCopy.identityServerType = this.identityServerType;
		cloudIdentityCopy.identityAuthenticationType = this.identityAuthenticationType;

		return cloudIdentityCopy;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((adminTenant == null) ? 0 : adminTenant.hashCode());
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		result = prime * result + ((identityUrl == null) ? 0 : identityUrl.hashCode());
		result = prime * result + ((memberRole == null) ? 0 : memberRole.hashCode());
		result = prime * result + ((msoId == null) ? 0 : msoId.hashCode());
		result = prime * result + ((msoPass == null) ? 0 : msoPass.hashCode());
		result = prime * result + ((tenantMetadata == null) ? 0 : tenantMetadata.hashCode());
		result = prime * result + ((identityServerType == null) ? 0 : identityServerType.hashCode());
		result = prime * result + ((identityAuthenticationType == null) ? 0 : identityAuthenticationType.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		CloudIdentity other = (CloudIdentity) obj;
		if (adminTenant == null) {
			if (other.adminTenant != null)
				return false;
		} else if (!adminTenant.equals(other.adminTenant))
			return false;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		if (identityUrl == null) {
			if (other.identityUrl != null)
				return false;
		} else if (!identityUrl.equals(other.identityUrl))
			return false;
		if (memberRole == null) {
			if (other.memberRole != null)
				return false;
		} else if (!memberRole.equals(other.memberRole))
			return false;
		if (msoId == null) {
			if (other.msoId != null)
				return false;
		} else if (!msoId.equals(other.msoId))
			return false;
		if (msoPass == null) {
			if (other.msoPass != null)
				return false;
		} else if (!msoPass.equals(other.msoPass))
			return false;
		if (tenantMetadata == null) {
			if (other.tenantMetadata != null)
				return false;
		} else if (!tenantMetadata.equals(other.tenantMetadata))
			return false;
		if (identityServerType == null) {
			if (other.getIdentityServerType() != null)
				return false;
		} else if (!identityServerType.equals(other.getIdentityServerType()))
			return false;
		if (identityAuthenticationType == null) {
			if (other.getIdentityAuthenticationType() != null)
				return false;
		} else if (!identityAuthenticationType.equals(other.getIdentityAuthenticationType()))
			return false;
		
		return true;
	}
}