WasteInformationServer/src/java/com/wasteinformationserver/website/datarequests/NewDateRequest.java

package com.wasteinformationserver.website.datarequests;

import com.wasteinformationserver.basicutils.Log;
import com.wasteinformationserver.db.JDCB;
import com.wasteinformationserver.website.basicrequest.PostRequest;

import java.io.IOException;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;

public class NewDateRequest extends PostRequest {
    @Override
    public String request(HashMap<String, String> params) {
        StringBuilder sb = new StringBuilder();
        JDCB jdcb;
        try {
            jdcb = JDCB.getInstance();
        } catch (IOException e) {
            Log.error("no connection to db");
            return "{\"query\" : \"nodbconn\"}";
        }
        switch (params.get("action")) {
            case "getCitynames":
                ResultSet sett = jdcb.executeQuery("select * from cities");
                Log.debug(sett.toString());
                sb.append("{\"data\":[");
                try {
                    String prev = "";
                    while (sett.next()) {
                        if (prev.equals(sett.getString("name"))){

                        }else {
                            sb.append("{\"cityname\":\"" + sett.getString("name") + "\"}");
                            if (!sett.isLast()) {
                                sb.append(",");
                            }
                        }
                        prev = sett.getString("name");
                    }
                } catch (SQLException e) {
                    e.printStackTrace();
                }
                sb.append("]");
                sb.append(",\"query\":\"ok\"");
                sb.append("}");
                break;
            case "getzones":
                ResultSet set = jdcb.executeQuery("select * from cities WHERE `name`='"+params.get("cityname")+"' ORDER BY zone ASC");
                Log.debug(set.toString());
                sb.append("{\"data\":[");
                try {
                    int prev = 42;
                    while (set.next()) {
                        if (prev == set.getInt("zone")){

                        }else {
                            sb.append("{\"zone\":\"" + set.getInt("zone") + "\"}");
                            if (!set.isLast()) {
                                sb.append(",");
                            }
                        }
                        prev = set.getInt("zone");
                        System.out.println(prev);
                    }
                } catch (SQLException e) {
                    e.printStackTrace();
                }
                sb.append("]");
                sb.append(",\"query\":\"ok\"");
                sb.append("}");
                break;
        }
        return sb.toString();
    }
}