/*
 * oauth2-oidc-sdk
 *
 * Copyright 2012-2021, Connect2id Ltd and contributors.
 *
 * 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.nimbusds.openid.connect.sdk.assurance.evidences;


import java.util.Objects;

import net.minidev.json.JSONObject;

import com.nimbusds.oauth2.sdk.ParseException;
import com.nimbusds.oauth2.sdk.util.CollectionUtils;
import com.nimbusds.oauth2.sdk.util.JSONObjectUtils;
import com.nimbusds.openid.connect.sdk.claims.Address;


/**
 * Voucher.
 *
 * <p>Related specifications:
 *
 * <ul>
 *     <li>OpenID Connect for Identity Assurance 1.0
 * </ul>
 */
public class Voucher {


        /**
         * The name.
         */
        private final Name name;


        /**
         * The birthdate.
         */
        private final String birthdateString;


        /**
         * The address.
         */
        private final Address address;


        /**
         * The occupation.
         */
        private final Occupation occupation;


        /**
         * The organisation.
         */
        private final Organization organization;


        /**
         * Creates a new voucher.
         *
         * @param name            The name, {@code null} if not specified.
         * @param birthdateString The birthday string, {@code null} if not
         *                        specified.
         * @param address         The address elements, {@code null} if not
         *                        specified.
         * @param occupation      The occupation, {@code null} if not
         *                        specified.
         * @param organization    The organisation, {@code null} if not
         *                        specified.
         */
        public Voucher(final Name name,
                       final String birthdateString,
                       final Address address,
                       final Occupation occupation,
                       final Organization organization) {

                this.name = name;
                this.birthdateString = birthdateString;
                this.address = address;
                this.occupation = occupation;
                this.organization = organization;
        }


        /**
         * Returns the name.
         *
         * @return The name, {@code null} if not specified.
         */
        public Name getName() {
                return name;
        }


        /**
         * Returns the birthdate string.
         *
         * @return The birthdate string, {@code null} if not specified.
         */
        public String getBirthdateString() {
                return birthdateString;
        }


        /**
         * Returns the address elements.
         *
         * @return The address elements, {@code null} if not specified.
         */
        public Address getAddress() {
                return address;
        }


        /**
         * Returns the occupation.
         *
         * @return The occupation, {@code null} if not specified.
         */
        public Occupation getOccupation() {
                return occupation;
        }


        /**
         * Returns the organisation.
         *
         * @return The organisation, {@code null} if not specified.
         */
        public Organization getOrganization() {
                return organization;
        }


        /**
         * Returns a JSON object representation of this voucher.
         *
         * @return The JSON object.
         */
        public JSONObject toJSONObject() {

                JSONObject o = new JSONObject();
                if (getName() != null) {
                        o.put("name", getName().getValue());
                }
                if (getBirthdateString() != null) {
                        o.put("birthdate", getBirthdateString());
                }
                if (getAddress() != null) {
                        o.putAll(getAddress().toJSONObject());
                }
                if (getOccupation() != null) {
                        o.put("occupation", getOccupation().getValue());
                }
                if (getOrganization() != null) {
                        o.put("organization", getOrganization().getValue());
                }
                return o;
        }


        @Override
        public boolean equals(Object o) {
                if (this == o) return true;
                if (!(o instanceof Voucher)) return false;
                Voucher voucher = (Voucher) o;
                return Objects.equals(getName(), voucher.getName()) &&
                        Objects.equals(getBirthdateString(), voucher.getBirthdateString()) &&
                        Objects.equals(getAddress(), voucher.getAddress()) &&
                        Objects.equals(getOccupation(), voucher.getOccupation()) &&
                        Objects.equals(getOrganization(), voucher.getOrganization());
        }


        @Override
        public int hashCode() {
                return Objects.hash(
                        getName(),
                        getBirthdateString(),
                        getAddress(),
                        getOccupation(),
                        getOrganization()
                );
        }


        /**
         * Parses a voucher from the specified JSON objecassertEquals("Equality", voucher, Voucher.parse(jsonObject));
                assertEquals("Hash code", voucher.hashCode(), Voucher.parse(jsonObject).hashCode());t.
         *
         * @param jsonObject The JSON object. Must not be {@code null}.
         *
         * @return The voucher.
         *
         * @throws ParseException If parsing failed.
         */
        public static Voucher parse(final JSONObject jsonObject)
                throws ParseException {

                try {
                        Name name = null;
                        if (jsonObject.get("name") != null) {
                                name = new Name(JSONObjectUtils.getNonBlankString(jsonObject, "name"));
                        }

                        String birthdateString = JSONObjectUtils.getString(jsonObject, "birthdate", null);

                        Occupation occupation = null;
                        if (jsonObject.get("occupation") != null) {
                                occupation = new Occupation(JSONObjectUtils.getNonBlankString(jsonObject, "occupation"));
                        }

                        Organization organization = null;
                        if (jsonObject.get("organization") != null) {
                                organization = new Organization(JSONObjectUtils.getNonBlankString(jsonObject, "organization"));
                        }

                        Address address = null;
                        if (CollectionUtils.intersect(Address.getStandardClaimNames(), jsonObject.keySet())) {

                                JSONObject addressSpecific = new JSONObject(jsonObject);
                                addressSpecific.remove("name");
                                addressSpecific.remove("birthdate");
                                addressSpecific.remove("occupation");
                                addressSpecific.remove("organization");
                                address = new Address(addressSpecific);
                        }

                        return new Voucher(name, birthdateString, address, occupation, organization);

                } catch (Exception e) {
                        throw new ParseException(e.getMessage(), e);
                }
        }
}