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/*
 * NextGenPSD2 XS2A Framework
 * # Summary The **NextGenPSD2** *Framework Version 1.3.4* offers a modern, open, harmonised and interoperable set of  Application Programming Interfaces (APIs) as the safest and most efficient way to provide data securely.  The NextGenPSD2 Framework reduces XS2A complexity and costs, addresses the problem of multiple competing standards  in Europe and, aligned with the goals of the Euro Retail Payments Board, enables European banking customers to benefit from innovative products and services ('Banking as a Service')  by granting TPPs safe and secure (authenticated and authorised) access to their bank accounts and financial data.  The possible Approaches are:   * Redirect SCA Approach   * OAuth SCA Approach   * Decoupled SCA Approach   * Embedded SCA Approach without SCA method   * Embedded SCA Approach with only one SCA method available   * Embedded SCA Approach with Selection of a SCA method    Not every message defined in this API definition is necessary for all approaches.    Furthermore this API definition does not differ between methods which are mandatory, conditional, or optional   Therefore for a particular implementation of a Berlin Group PSD2 compliant API it is only necessary to support    a certain subset of the methods defined in this API definition.    **Please have a look at the implementation guidelines if you are not sure    which message has to be used for the approach you are going to use.**  ## Some General Remarks Related to this version of the OpenAPI Specification: * **This API definition is based on the Implementation Guidelines of the Berlin Group PSD2 API.**    It is not an replacement in any sense.   The main specification is (at the moment) always the Implementation Guidelines of the Berlin Group PSD2 API. * **This API definition contains the REST-API for requests from the PISP to the ASPSP.** * **This API definition contains the messages for all different approaches defined in the Implementation Guidelines.** * According to the OpenAPI-Specification [https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.1.md]        \"If in is \"header\" and the name field is \"Accept\", \"Content-Type\" or \"Authorization\", the parameter definition SHALL be ignored.\"      The element \"Accept\" will not be defined in this file at any place.      The elements \"Content-Type\" and \"Authorization\" are implicitly defined by the OpenApi tags \"content\" and \"security\".    * There are several predefined types which might occur in payment initiation messages,    but are not used in the standard JSON messages in the Implementation Guidelines.   Therefore they are not used in the corresponding messages in this file either.   We added them for the convenience of the user.   If there is a payment product, which need these field, one can easily use the predefined types.   But the ASPSP need not to accept them in general.    * **We omit the definition of all standard HTTP header elements (mandatory/optional/conditional)    except they are mention in the Implementation Guidelines.**   Therefore the implementer might add the in his own realisation of a PSD2 comlient API in addition to the elements define in this file.     ## General Remarks on Data Types  The Berlin Group definition of UTF-8 strings in context of the PSD2 API have to support at least the following characters  a b c d e f g h i j k l m n o p q r s t u v w x y z  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  0 1 2 3 4 5 6 7 8 9  / - ? : ( ) . , ' +  Space 
 *
 * OpenAPI spec version: 1.3.4_2019-07-17v1
 * Contact: [email protected]
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */

package de.adorsys.multibanking.xs2a_adapter;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import io.gsonfire.GsonFireBuilder;
import io.gsonfire.TypeSelector;
import com.google.gson.JsonParseException;
import com.google.gson.TypeAdapter;
import com.google.gson.internal.bind.util.ISO8601Utils;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;

import de.adorsys.multibanking.xs2a_adapter.model.*;

import java.io.IOException;
import java.io.StringReader;
import java.lang.reflect.Type;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.time.LocalDate;
import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;
import java.util.Map;
import java.util.HashMap;

public class JSON {
    private Gson gson;
    private boolean isLenientOnJson = false;
    private DateTypeAdapter dateTypeAdapter = new DateTypeAdapter();
    private SqlDateTypeAdapter sqlDateTypeAdapter = new SqlDateTypeAdapter();
    private OffsetDateTimeTypeAdapter offsetDateTimeTypeAdapter = new OffsetDateTimeTypeAdapter();
    private LocalDateTypeAdapter localDateTypeAdapter = new LocalDateTypeAdapter();

    public static GsonBuilder createGson() {
        GsonFireBuilder fireBuilder = new GsonFireBuilder()
        ;
        return fireBuilder.createGsonBuilder();
    }

    private static String getDiscriminatorValue(JsonElement readElement, String discriminatorField) {
        JsonElement element = readElement.getAsJsonObject().get(discriminatorField);
        if(null == element) {
            throw new IllegalArgumentException("missing discriminator field: <" + discriminatorField + ">");
        }
        return element.getAsString();
    }

    private static  Class getClassByDiscriminator(Map> classByDiscriminatorValue, String discriminatorValue) {
        Class clazz = classByDiscriminatorValue.get(discriminatorValue.toUpperCase());
        if(null == clazz) {
            throw new IllegalArgumentException("cannot determine model class of name: <" + discriminatorValue + ">");
        }
        return clazz;
    }

    public JSON() {
        gson = createGson()
            .registerTypeAdapter(Date.class, dateTypeAdapter)
            .registerTypeAdapter(java.sql.Date.class, sqlDateTypeAdapter)
            .registerTypeAdapter(OffsetDateTime.class, offsetDateTimeTypeAdapter)
            .registerTypeAdapter(LocalDate.class, localDateTypeAdapter)
            .create();
    }

    /**
     * Get Gson.
     *
     * @return Gson
     */
    public Gson getGson() {
        return gson;
    }

    /**
     * Set Gson.
     *
     * @param gson Gson
     * @return JSON
     */
    public JSON setGson(Gson gson) {
        this.gson = gson;
        return this;
    }

    public JSON setLenientOnJson(boolean lenientOnJson) {
        isLenientOnJson = lenientOnJson;
        return this;
    }

    /**
     * Serialize the given Java object into JSON string.
     *
     * @param obj Object
     * @return String representation of the JSON
     */
    public String serialize(Object obj) {
        return gson.toJson(obj);
    }

    /**
     * Deserialize the given JSON string to Java object.
     *
     * @param         Type
     * @param body       The JSON string
     * @param returnType The type to deserialize into
     * @return The deserialized Java object
     */
    @SuppressWarnings("unchecked")
    public  T deserialize(String body, Type returnType) {
        try {
            if (isLenientOnJson) {
                JsonReader jsonReader = new JsonReader(new StringReader(body));
                // see https://google-gson.googlecode.com/svn/trunk/gson/docs/javadocs/com/google/gson/stream/JsonReader.html#setLenient(boolean)
                jsonReader.setLenient(true);
                return gson.fromJson(jsonReader, returnType);
            } else {
                return gson.fromJson(body, returnType);
            }
        } catch (JsonParseException e) {
            // Fallback processing when failed to parse JSON form response body:
            // return the response body string directly for the String return type;
            if (returnType.equals(String.class))
                return (T) body;
            else throw (e);
        }
    }

    /**
     * Gson TypeAdapter for JSR310 OffsetDateTime type
     */
    public static class OffsetDateTimeTypeAdapter extends TypeAdapter {

        private DateTimeFormatter formatter;

        public OffsetDateTimeTypeAdapter() {
            this(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
        }

        public OffsetDateTimeTypeAdapter(DateTimeFormatter formatter) {
            this.formatter = formatter;
        }

        public void setFormat(DateTimeFormatter dateFormat) {
            this.formatter = dateFormat;
        }

        @Override
        public void write(JsonWriter out, OffsetDateTime date) throws IOException {
            if (date == null) {
                out.nullValue();
            } else {
                out.value(formatter.format(date));
            }
        }

        @Override
        public OffsetDateTime read(JsonReader in) throws IOException {
            switch (in.peek()) {
                case NULL:
                    in.nextNull();
                    return null;
                default:
                    String date = in.nextString();
                    if (date.endsWith("+0000")) {
                        date = date.substring(0, date.length()-5) + "Z";
                    }
                    return OffsetDateTime.parse(date, formatter);
            }
        }
    }

    /**
     * Gson TypeAdapter for JSR310 LocalDate type
     */
    public class LocalDateTypeAdapter extends TypeAdapter {

        private DateTimeFormatter formatter;

        public LocalDateTypeAdapter() {
            this(DateTimeFormatter.ISO_LOCAL_DATE);
        }

        public LocalDateTypeAdapter(DateTimeFormatter formatter) {
            this.formatter = formatter;
        }

        public void setFormat(DateTimeFormatter dateFormat) {
            this.formatter = dateFormat;
        }

        @Override
        public void write(JsonWriter out, LocalDate date) throws IOException {
            if (date == null) {
                out.nullValue();
            } else {
                out.value(formatter.format(date));
            }
        }

        @Override
        public LocalDate read(JsonReader in) throws IOException {
            switch (in.peek()) {
                case NULL:
                    in.nextNull();
                    return null;
                default:
                    String date = in.nextString();
                    return LocalDate.parse(date, formatter);
            }
        }
    }

    public JSON setOffsetDateTimeFormat(DateTimeFormatter dateFormat) {
        offsetDateTimeTypeAdapter.setFormat(dateFormat);
        return this;
    }

    public JSON setLocalDateFormat(DateTimeFormatter dateFormat) {
        localDateTypeAdapter.setFormat(dateFormat);
        return this;
    }

    /**
     * Gson TypeAdapter for java.sql.Date type
     * If the dateFormat is null, a simple "yyyy-MM-dd" format will be used
     * (more efficient than SimpleDateFormat).
     */
    public static class SqlDateTypeAdapter extends TypeAdapter {

        private DateFormat dateFormat;

        public SqlDateTypeAdapter() {
        }

        public SqlDateTypeAdapter(DateFormat dateFormat) {
            this.dateFormat = dateFormat;
        }

        public void setFormat(DateFormat dateFormat) {
            this.dateFormat = dateFormat;
        }

        @Override
        public void write(JsonWriter out, java.sql.Date date) throws IOException {
            if (date == null) {
                out.nullValue();
            } else {
                String value;
                if (dateFormat != null) {
                    value = dateFormat.format(date);
                } else {
                    value = date.toString();
                }
                out.value(value);
            }
        }

        @Override
        public java.sql.Date read(JsonReader in) throws IOException {
            switch (in.peek()) {
                case NULL:
                    in.nextNull();
                    return null;
                default:
                    String date = in.nextString();
                    try {
                        if (dateFormat != null) {
                            return new java.sql.Date(dateFormat.parse(date).getTime());
                        }
                        return new java.sql.Date(ISO8601Utils.parse(date, new ParsePosition(0)).getTime());
                    } catch (ParseException e) {
                        throw new JsonParseException(e);
                    }
            }
        }
    }

    /**
     * Gson TypeAdapter for java.util.Date type
     * If the dateFormat is null, ISO8601Utils will be used.
     */
    public static class DateTypeAdapter extends TypeAdapter {

        private DateFormat dateFormat;

        public DateTypeAdapter() {
        }

        public DateTypeAdapter(DateFormat dateFormat) {
            this.dateFormat = dateFormat;
        }

        public void setFormat(DateFormat dateFormat) {
            this.dateFormat = dateFormat;
        }

        @Override
        public void write(JsonWriter out, Date date) throws IOException {
            if (date == null) {
                out.nullValue();
            } else {
                String value;
                if (dateFormat != null) {
                    value = dateFormat.format(date);
                } else {
                    value = ISO8601Utils.format(date, true);
                }
                out.value(value);
            }
        }

        @Override
        public Date read(JsonReader in) throws IOException {
            try {
                switch (in.peek()) {
                    case NULL:
                        in.nextNull();
                        return null;
                    default:
                        String date = in.nextString();
                        try {
                            if (dateFormat != null) {
                                return dateFormat.parse(date);
                            }
                            return ISO8601Utils.parse(date, new ParsePosition(0));
                        } catch (ParseException e) {
                            throw new JsonParseException(e);
                        }
                }
            } catch (IllegalArgumentException e) {
                throw new JsonParseException(e);
            }
        }
    }

    public JSON setDateFormat(DateFormat dateFormat) {
        dateTypeAdapter.setFormat(dateFormat);
        return this;
    }

    public JSON setSqlDateFormat(DateFormat dateFormat) {
        sqlDateTypeAdapter.setFormat(dateFormat);
        return this;
    }

}




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