package th.co.muangthai.endrprint.util;

import com.google.gson.*;

import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Created by IntelliJ IDEA.
 * User: ZIZU
 * Date: 5/16/13
 * Time: 9:21 AM
 * To change this template use File | Settings | File Templates.
 */
public class JsonUtil {

    private static Gson gson;

    public static Gson getGsonInstance() {

        if (gson == null) {
            GsonBuilder gsonBuilder = new GsonBuilder();
            gsonBuilder.registerTypeAdapter(BigDecimal.class, new JsonDeserializer<BigDecimal>() {

                @Override
                public BigDecimal deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context)
                        throws JsonParseException {
                    try {

                        String value = json.getAsString();

                        if (value != null) {
                            value = value.replace("\\r", "");
                        }

                        return new BigDecimal(value);
                    } catch (Exception e) {
                        return null;
                    }
                }


            });

            gsonBuilder.registerTypeAdapter(Integer.class, new JsonDeserializer<Integer>() {

                @Override
                public Integer deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context)
                        throws JsonParseException {
                    try {

                        String value = json.getAsString();

                        if (value != null) {
                            value = value.replace("\\r", "");
                        }

                        return new Integer(value);
                    } catch (Exception e) {
                        return null;
                    }
                }
            });

            gsonBuilder.registerTypeAdapter(Date.class, new JsonDeserializer<Date>() {
//                SimpleDateFormat df = new SimpleDateFormat("dd/MM/yyyy", VSMUtil.LOCALE);
//                SimpleDateFormat dfTime = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss", VSMUtil.LOCALE);
//                SimpleDateFormat df2Time = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss", VSMUtil.LOCALE_EN);
//                SimpleDateFormat df2 = new SimpleDateFormat("dd/MM/yyyy", VSMUtil.LOCALE_EN);

                SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd", VSMUtil.LOCALE);
                SimpleDateFormat dfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", VSMUtil.LOCALE);
                SimpleDateFormat df2Time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", VSMUtil.LOCALE_EN);
                SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd", VSMUtil.LOCALE_EN);

                @Override
                public Date deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context)
                        throws JsonParseException {
//                    public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {

                    try {
                        if (json.getAsString().length() > 10) {
                            String[] str1 = json.getAsString().split(" ");
//                            System.out.println("str1 > "+ str1.length);
//                            System.out.println("str1 > "+ str1[0]);
//                            System.out.println("str1 > "+ str1[1]);

                            if (str1[0].trim().length() > 10) {
                                String[] str = str1[0].split(TextContent.splitSpe);
//                                System.out.println("str > "+ str.length);
//                                System.out.println("str > "+ str[0]);
//                                System.out.println("str > "+ str[1]);
//                                System.out.println("str > "+ str[2]);
                                String bb = json.getAsString().replace(str[2], "9999");
//                                System.out.println("dd > "+ bb);

                                if (str1.length > 1) {
                                    return df2Time.parse(bb);
                                } else {
                                    return df2.parse(bb);
                                }

                            } else {
                                return dfTime.parse(json.getAsString());
                            }
                        }
//                        else if (json.getAsString().length() > 5) {
//                            String[] str = json.getAsString().split(TextContent.splitSpe);
//                            if (null != str && str.length == 3) {
//                                if (12 < Integer.parseInt(str[1])) {
//                                    throw new RuntimeException("Invalid month!, " + json.getAsString());
//                                }
//                                try {
//                                    String dataChk = str[0] + "/" + str[1] + "/" + TextContent.getLPAD ((Integer.parseInt(str[2]) - 543)+"","0",4);
//                                    String dataChk2 = DateUtil.toFormatString(DateUtil.toDate(dataChk), "dd/MM/yyyy");
//                                    if (!dataChk.equals(dataChk2)) {
//                                        throw new RuntimeException("Invalid Date " + json.getAsString() + "!");
//                                    }
//                                } catch (Exception e) {
//                                    throw new RuntimeException("Invalid Format Date dd/MM/yyyy!, " + json.getAsString());
//                                }
//
//                            } else {
//                                throw new RuntimeException("Invalid Format Date dd/MM/yyyy!, " + json.getAsString());
//                            }
//                        }

                        return df2.parse(json.getAsString());
                    } catch (ParseException e) {
                        throw new RuntimeException(e);
                    }

                }
            });

            gsonBuilder.setDateFormat("yyyy/MM/dd");

            gson = gsonBuilder.create();
        }

        return gson;
    }
}