package info.nightscout.androidaps.Services;

import android.app.IntentService;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.support.annotation.Nullable;

import com.j256.ormlite.dao.Dao;
import com.j256.ormlite.stmt.PreparedQuery;
import com.j256.ormlite.stmt.QueryBuilder;
import com.j256.ormlite.stmt.Where;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.sql.SQLException;
import java.util.Date;
import java.util.List;

import info.nightscout.androidaps.MainActivity;
import info.nightscout.androidaps.MainApp;
import info.nightscout.androidaps.db.BgReading;
import info.nightscout.androidaps.db.Treatment;
import info.nightscout.androidaps.events.EventNewBG;
import info.nightscout.androidaps.events.EventNewBasalProfile;
import info.nightscout.androidaps.events.EventTreatmentChange;
import info.nightscout.androidaps.Config;
import info.nightscout.androidaps.interfaces.PumpInterface;
import info.nightscout.client.data.NSProfile;
import info.nightscout.client.data.NSSgv;


public class DataService extends IntentService {
    private static Logger log = LoggerFactory.getLogger(DataService.class);

    Handler mHandler;
    private HandlerThread mHandlerThread;

    public DataService() {
        super("DataService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        if (Config.logFunctionCalls)
            log.debug("onHandleIntent");

        if (intent != null) {
            final String action = intent.getAction();
            if (Intents.ACTION_NEW_BG_ESTIMATE.equals(action)) {
                handleNewDataFromXDrip(intent);
            } else if (Intents.ACTION_NEW_PROFILE.equals(action) ||
                    Intents.ACTION_NEW_TREATMENT.equals(action) ||
                    Intents.ACTION_CHANGED_TREATMENT.equals(action) ||
                    Intents.ACTION_REMOVED_TREATMENT.equals(action) ||
                    Intents.ACTION_NEW_SGV.equals(action)
                    ) {
                handleNewDataFromNSClient(intent);
            }
        }
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        super.onStartCommand(intent, flags, startId);

        if (Config.logFunctionCalls)
            log.debug("onStartCommand");

        if (mHandlerThread == null) {
            if (Config.detailedLog)
                log.debug("Creating handler thread");

            this.mHandlerThread = new HandlerThread(DataService.class.getSimpleName() + "Handler");
            mHandlerThread.start();

            this.mHandler = new Handler(mHandlerThread.getLooper());

            registerBus();
        }
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        MainApp.bus().unregister(this);
    }

    private void registerBus() {
        try {
            MainApp.bus().unregister(this);
        } catch (RuntimeException x) {
            // Ignore
        }
        MainApp.bus().register(this);
    }

    private void handleNewDataFromXDrip(Intent intent) {
        Bundle bundle = intent.getExtras();
        if (bundle == null) return;

        BgReading bgReading = new BgReading();

        bgReading.value = bundle.getDouble(Intents.EXTRA_BG_ESTIMATE);
        bgReading.slope = bundle.getDouble(Intents.EXTRA_BG_SLOPE);
        bgReading.battery_level = bundle.getInt(Intents.EXTRA_SENSOR_BATTERY);
        bgReading.timestamp = bundle.getLong(Intents.EXTRA_TIMESTAMP);
        bgReading.raw = bundle.getDouble(Intents.EXTRA_RAW);

        if (Config.logIncommingBG)
            log.debug("XDRIPREC BG " + bgReading.toString());

        try {
            MainApp.instance().getDbHelper().getDaoBgReadings().createIfNotExists(bgReading);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        MainApp.bus().post(new EventNewBG());
    }

    private void handleNewDataFromNSClient(Intent intent) {
        Bundle bundles = intent.getExtras();
        if (bundles == null) return;


        // Handle profile
        if (intent.getAction().equals(Intents.ACTION_NEW_PROFILE)) {
            try {
                String activeProfile = bundles.getString("activeprofile");
                String profile = bundles.getString("profile");
                NSProfile nsProfile = new NSProfile(new JSONObject(profile), activeProfile);
                EventNewBasalProfile event = new EventNewBasalProfile(nsProfile);
                if (MainActivity.getConfigBuilder() == null) {
                    log.error("Config builder not ready on receive profile");
                    return;
                }
                PumpInterface pump = MainActivity.getConfigBuilder().getActivePump();
                if (pump != null) {
                    pump.setNewBasalProfile(nsProfile);
                } else {
                    log.error("No active pump selected");
                }
                if (Config.logIncommingData)
                    log.debug("Received profile: " + activeProfile + " " + profile);
                MainApp.bus().post(event);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        if (intent.getAction().equals(Intents.ACTION_NEW_TREATMENT)) {
            try {
                String trstring = bundles.getString("treatment");
                JSONObject trJson = new JSONObject(trstring);
                if (!trJson.has("insulin") && !trJson.has("carbs")) {
                    if (Config.logIncommingData)
                        log.debug("ADD: Uninterested treatment: " + trstring);
                    return;
                }

                Treatment stored = null;
                trJson = new JSONObject(trstring);
                String _id = trJson.getString("_id");

                if (trJson.has("timeIndex")) {
                    if (Config.logIncommingData)
                        log.debug("ADD: timeIndex found: " + trstring);
                    stored = findByTimeIndex(trJson.getLong("timeIndex"));
                } else {
                    stored = findById(_id);
                }

                if (stored != null) {
                    if (Config.logIncommingData)
                        log.debug("ADD: Existing treatment: " + trstring);
                    if (trJson.has("timeIndex")) {
                        stored._id = _id;
                        MainApp.getDbHelper().getDaoTreatments().update(stored);
                    }
                    MainApp.bus().post(new EventTreatmentChange());
                    return;
                } else {
                    if (Config.logIncommingData)
                        log.debug("ADD: New treatment: " + trstring);
                    Treatment treatment = new Treatment();
                    treatment._id = _id;
                    treatment.carbs = trJson.has("carbs") ? trJson.getDouble("carbs") : 0;
                    treatment.insulin = trJson.has("insulin") ? trJson.getDouble("insulin") : 0d;
                    treatment.created_at = new Date(trJson.getLong("mills"));
                    treatment.setTimeIndex(treatment.getTimeIndex());
                    try {
                        MainApp.getDbHelper().getDaoTreatments().create(treatment);
                        if (Config.logIncommingData)
                            log.debug("ADD: Stored treatment: " + treatment.log());
                    } catch (SQLException e) {
                        e.printStackTrace();
                    }
                    MainApp.bus().post(new EventTreatmentChange());
                }

            } catch (JSONException e) {
                e.printStackTrace();
            } catch (Exception e1) {
                e1.printStackTrace();
            }

        }

        if (intent.getAction().equals(Intents.ACTION_CHANGED_TREATMENT)) {
            try {
                String trstring = bundles.getString("treatment");
                JSONObject trJson = new JSONObject(trstring);
                if (!trJson.has("insulin") && !trJson.has("carbs")) {
                    if (Config.logIncommingData)
                        log.debug("CHANGE: Uninterested treatment: " + trstring);
                    return;
                }
                trJson = new JSONObject(trstring);
                String _id = trJson.getString("_id");

                Treatment stored;

                if (trJson.has("timeIndex")) {
                    if (Config.logIncommingData)
                        log.debug("ADD: timeIndex found: " + trstring);
                    stored = findByTimeIndex(trJson.getLong("timeIndex"));
                } else {
                    stored = findById(_id);
                }

                if (stored != null) {
                    if (Config.logIncommingData)
                        log.debug("CHANGE: Existing treatment: " + trstring);
                    stored._id = _id;
                    stored.carbs = trJson.has("carbs") ? trJson.getDouble("carbs") : 0;
                    stored.insulin = trJson.has("insulin") ? trJson.getDouble("insulin") : 0d;
                    stored.created_at = new Date(trJson.getLong("mills"));
                    MainApp.getDbHelper().getDaoTreatments().update(stored);
                    MainApp.bus().post(new EventTreatmentChange());
                } else {
                    if (Config.logIncommingData)
                        log.debug("CHANGE: New treatment: " + trstring);
                    Treatment treatment = new Treatment();
                    treatment._id = _id;
                    treatment.carbs = trJson.has("carbs") ? trJson.getDouble("carbs") : 0;
                    treatment.insulin = trJson.has("insulin") ? trJson.getDouble("insulin") : 0d;
                    //treatment.created_at = DateUtil.fromISODateString(trJson.getString("created_at"));
                    treatment.created_at = new Date(trJson.getLong("mills"));
                    treatment.setTimeIndex(treatment.getTimeIndex());
                    try {
                        MainApp.getDbHelper().getDaoTreatments().create(treatment);
                        if (Config.logIncommingData)
                            log.debug("CHANGE: Stored treatment: " + treatment.log());
                    } catch (SQLException e) {
                        e.printStackTrace();
                    }
                    MainApp.bus().post(new EventTreatmentChange());
                }

            } catch (JSONException e) {
                e.printStackTrace();
            } catch (Exception e1) {
                e1.printStackTrace();
            }
        }

        if (intent.getAction().equals(Intents.ACTION_REMOVED_TREATMENT)) {
            try {
                if (bundles.containsKey("treatment")) {
                    String trstring = bundles.getString("treatment");
                    JSONObject trJson = new JSONObject(trstring);
                    String _id = trJson.getString("_id");
                    removeTreatmentFromDb(_id);
                }

                if (bundles.containsKey("treatments")) {
                    String trstring = bundles.getString("treatments");
                    JSONArray jsonArray = new JSONArray(trstring);
                    for (int i = 0; i < jsonArray.length(); i++) {
                        JSONObject trJson = jsonArray.getJSONObject(i);
                        String _id = trJson.getString("_id");
                        removeTreatmentFromDb(_id);
                    }
                }
                MainApp.bus().post(new EventTreatmentChange());

            } catch (JSONException e) {
                e.printStackTrace();
            } catch (Exception e1) {
                e1.printStackTrace();
            }
        }

        if (intent.getAction().equals(Intents.ACTION_NEW_SGV)) {
            try {
                if (bundles.containsKey("sgv")) {
                    String sgvstring = bundles.getString("sgv");
                    JSONObject sgvJson = new JSONObject(sgvstring);
                    NSSgv nsSgv = new NSSgv(sgvJson);
                    BgReading bgReading = new BgReading(nsSgv);
                    MainApp.getDbHelper().getDaoBgReadings().createIfNotExists(bgReading);
                    if (Config.logIncommingData)
                        log.debug("ADD: Stored new BG: " + bgReading.toString());
                }

                if (bundles.containsKey("sgvs")) {
                    String sgvstring = bundles.getString("sgvs");
                    JSONArray jsonArray = new JSONArray(sgvstring);
                    for (int i = 0; i < jsonArray.length(); i++) {
                        JSONObject sgvJson = jsonArray.getJSONObject(i);
                        NSSgv nsSgv = new NSSgv(sgvJson);
                        BgReading bgReading = new BgReading(nsSgv);
                        MainApp.getDbHelper().getDaoBgReadings().createIfNotExists(bgReading);
                        if (Config.logIncommingData)
                            log.debug("ADD: Stored new BG: " + bgReading.toString());
                    }
                }
                MainApp.bus().post(new EventTreatmentChange());

            } catch (JSONException e) {
                e.printStackTrace();
            } catch (Exception e1) {
                e1.printStackTrace();
            }
            MainApp.bus().post(new EventNewBG());
        }
    }

    @Nullable
    public static Treatment findById(String _id) {
        try {
            Dao<Treatment, Long> daoTreatments = MainApp.getDbHelper().getDaoTreatments();
            QueryBuilder<Treatment, Long> queryBuilder = daoTreatments.queryBuilder();
            Where where = queryBuilder.where();
            where.eq("_id", _id);
            queryBuilder.limit(10);
            PreparedQuery<Treatment> preparedQuery = queryBuilder.prepare();
            List<Treatment> trList = daoTreatments.query(preparedQuery);
            if (trList.size() != 1) {
                //log.debug("Treatment findById query size: " + trList.size());
                return null;
            } else {
                //log.debug("Treatment findById found: " + trList.get(0).log());
                return trList.get(0);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Nullable
    public static Treatment findByTimeIndex(Long timeIndex) {
        try {
            QueryBuilder<Treatment, String> qb = null;
            Dao<Treatment, Long> daoTreatments = MainApp.getDbHelper().getDaoTreatments();
            QueryBuilder<Treatment, Long> queryBuilder = daoTreatments.queryBuilder();
            Where where = queryBuilder.where();
            where.eq("timeIndex", timeIndex);
            queryBuilder.limit(10);
            PreparedQuery<Treatment> preparedQuery = queryBuilder.prepare();
            List<Treatment> trList = daoTreatments.query(preparedQuery);
            if (trList.size() != 1) {
                log.debug("Treatment findByTimeIndex query size: " + trList.size());
                return null;
            } else {
                log.debug("Treatment findByTimeIndex found: " + trList.get(0).log());
                return trList.get(0);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }

    private void removeTreatmentFromDb(String _id) throws SQLException {
        Treatment stored = findById(_id);
        if (stored != null) {
            log.debug("REMOVE: Existing treatment (removing): " + _id);
            MainApp.getDbHelper().getDaoTreatments().delete(stored);
            MainApp.bus().post(new EventTreatmentChange());
        } else {
            log.debug("REMOVE: Not stored treatment (ignoring): " + _id);
        }
    }
}