package info.nightscout.androidaps.activities;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

import com.squareup.otto.Subscribe;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;

import info.nightscout.androidaps.MainApp;
import info.nightscout.androidaps.R;
import info.nightscout.androidaps.data.Profile;
import info.nightscout.androidaps.db.TDD;
import info.nightscout.androidaps.events.EventPumpStatusChanged;
import info.nightscout.androidaps.interfaces.PumpInterface;
import info.nightscout.androidaps.plugins.ConfigBuilder.ConfigBuilderPlugin;
import info.nightscout.androidaps.plugins.ConfigBuilder.ProfileFunctions;
import info.nightscout.androidaps.plugins.PumpDanaR.DanaRPlugin;
import info.nightscout.androidaps.plugins.PumpDanaR.events.EventDanaRSyncStatus;
import info.nightscout.androidaps.plugins.PumpDanaRKorean.DanaRKoreanPlugin;
import info.nightscout.androidaps.plugins.PumpDanaRS.DanaRSPlugin;
import info.nightscout.androidaps.plugins.PumpDanaRv2.DanaRv2Plugin;
import info.nightscout.androidaps.plugins.PumpInsight.InsightPlugin;
import info.nightscout.androidaps.queue.Callback;
import info.nightscout.utils.DecimalFormatter;
import info.nightscout.utils.SP;
import info.nightscout.utils.SafeParse;

public class TDDStatsActivity extends Activity {
    private static Logger log = LoggerFactory.getLogger(TDDStatsActivity.class);

    TextView statusView, statsMessage, totalBaseBasal2;
    EditText totalBaseBasal;
    Button reloadButton;
    LinearLayoutManager llm;
    TableLayout tl, ctl, etl;
    String TBB;
    double magicNumber;
    DecimalFormat decimalFormat;

    List<TDD> historyList = new ArrayList<>();
    List<TDD> dummies;

    public TDDStatsActivity() {
        super();
    }

    @Override
    protected void onResume() {
        super.onResume();
        MainApp.bus().register(this);
    }

    @Override
    protected void onPause() {
        super.onPause();
        MainApp.bus().unregister(this);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            View myView = getCurrentFocus();
            if (myView instanceof EditText) {
                Rect rect = new Rect();
                myView.getGlobalVisibleRect(rect);
                if (!rect.contains((int) event.getRawX(), (int) event.getRawY())) {
                    myView.clearFocus();
                }
            }
        }
        return super.dispatchTouchEvent(event);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.danar_statsactivity);
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        statusView = (TextView) findViewById(R.id.danar_stats_connection_status);
        reloadButton = (Button) findViewById(R.id.danar_statsreload);
        totalBaseBasal = (EditText) findViewById(R.id.danar_stats_editTotalBaseBasal);
        totalBaseBasal2 = (TextView) findViewById(R.id.danar_stats_editTotalBaseBasal2);
        statsMessage = (TextView) findViewById(R.id.danar_stats_Message);

        statusView.setVisibility(View.GONE);
        statsMessage.setVisibility(View.GONE);

        totalBaseBasal2.setEnabled(false);
        totalBaseBasal2.setClickable(false);
        totalBaseBasal2.setFocusable(false);
        totalBaseBasal2.setInputType(0);

        decimalFormat = new DecimalFormat("0.000");
        llm = new LinearLayoutManager(this);

        TBB = SP.getString("TBB", "10.00");

        Profile profile = ProfileFunctions.getInstance().getProfile();
        if (profile != null) {
            double cppTBB = profile.baseBasalSum();
            TBB = decimalFormat.format(cppTBB);
            SP.putString("TBB", TBB);
        }
        totalBaseBasal.setText(TBB);

        if (!ConfigBuilderPlugin.getPlugin().getActivePump().getPumpDescription().needsManualTDDLoad)
            reloadButton.setVisibility(View.GONE);

        // stats table
        tl = (TableLayout) findViewById(R.id.main_table);
        TableRow tr_head = new TableRow(this);
        tr_head.setBackgroundColor(Color.DKGRAY);
        tr_head.setLayoutParams(new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT));

        TextView label_date = new TextView(this);
        label_date.setText(MainApp.gs(R.string.danar_stats_date));
        label_date.setTextColor(Color.WHITE);
        tr_head.addView(label_date);

        TextView label_basalrate = new TextView(this);
        label_basalrate.setText(MainApp.gs(R.string.danar_stats_basalrate));
        label_basalrate.setTextColor(Color.WHITE);
        tr_head.addView(label_basalrate);

        TextView label_bolus = new TextView(this);
        label_bolus.setText(MainApp.gs(R.string.danar_stats_bolus));
        label_bolus.setTextColor(Color.WHITE);
        tr_head.addView(label_bolus);

        TextView label_tdd = new TextView(this);
        label_tdd.setText(MainApp.gs(R.string.danar_stats_tdd));
        label_tdd.setTextColor(Color.WHITE);
        tr_head.addView(label_tdd);

        TextView label_ratio = new TextView(this);
        label_ratio.setText(MainApp.gs(R.string.danar_stats_ratio));
        label_ratio.setTextColor(Color.WHITE);
        tr_head.addView(label_ratio);

        // add stats headers to tables
        tl.addView(tr_head, new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT));

        // cumulative table
        ctl = (TableLayout) findViewById(R.id.cumulative_table);
        TableRow ctr_head = new TableRow(this);
        ctr_head.setBackgroundColor(Color.DKGRAY);
        ctr_head.setLayoutParams(new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT));

        TextView label_cum_amount_days = new TextView(this);
        label_cum_amount_days.setText(MainApp.gs(R.string.danar_stats_amount_days));
        label_cum_amount_days.setTextColor(Color.WHITE);
        ctr_head.addView(label_cum_amount_days);

        TextView label_cum_tdd = new TextView(this);
        label_cum_tdd.setText(MainApp.gs(R.string.danar_stats_tdd));
        label_cum_tdd.setTextColor(Color.WHITE);
        ctr_head.addView(label_cum_tdd);

        TextView label_cum_ratio = new TextView(this);
        label_cum_ratio.setText(MainApp.gs(R.string.danar_stats_ratio));
        label_cum_ratio.setTextColor(Color.WHITE);
        ctr_head.addView(label_cum_ratio);

        // add cummulative headers to tables
        ctl.addView(ctr_head, new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT));

        // expontial table
        etl = (TableLayout) findViewById(R.id.expweight_table);
        TableRow etr_head = new TableRow(this);
        etr_head.setBackgroundColor(Color.DKGRAY);
        etr_head.setLayoutParams(new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT));

        TextView label_exp_weight = new TextView(this);
        label_exp_weight.setText(MainApp.gs(R.string.danar_stats_weight));
        label_exp_weight.setTextColor(Color.WHITE);
        etr_head.addView(label_exp_weight);

        TextView label_exp_tdd = new TextView(this);
        label_exp_tdd.setText(MainApp.gs(R.string.danar_stats_tdd));
        label_exp_tdd.setTextColor(Color.WHITE);
        etr_head.addView(label_exp_tdd);

        TextView label_exp_ratio = new TextView(this);
        label_exp_ratio.setText(MainApp.gs(R.string.danar_stats_ratio));
        label_exp_ratio.setTextColor(Color.WHITE);
        etr_head.addView(label_exp_ratio);

        // add expontial headers to tables
        etl.addView(etr_head, new TableLayout.LayoutParams(
                TableLayout.LayoutParams.MATCH_PARENT,
                TableLayout.LayoutParams.WRAP_CONTENT));

        reloadButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        reloadButton.setVisibility(View.GONE);
                        statusView.setVisibility(View.VISIBLE);
                        statsMessage.setVisibility(View.VISIBLE);
                        statsMessage.setText(MainApp.gs(R.string.danar_stats_warning_Message));
                    }
                });
                ConfigBuilderPlugin.getPlugin().getCommandQueue().loadTDDs( new Callback() {
                    @Override
                    public void run() {
                        loadDataFromDB();
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                reloadButton.setVisibility(View.VISIBLE);
                                statusView.setVisibility(View.GONE);
                                statsMessage.setVisibility(View.GONE);
                            }
                        });
                    }
                });
            }
        });

        totalBaseBasal.setOnEditorActionListener(new TextView.OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                if (actionId == EditorInfo.IME_ACTION_DONE) {
                    totalBaseBasal.clearFocus();
                    return true;
                }
                return false;
            }
        });

        totalBaseBasal.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    totalBaseBasal.getText().clear();
                } else {
                    SP.putString("TBB", totalBaseBasal.getText().toString());
                    TBB = SP.getString("TBB", "");
                    loadDataFromDB();
                    InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(totalBaseBasal.getWindowToken(), 0);
                }
            }
        });

        loadDataFromDB();
    }

    private void loadDataFromDB() {
        historyList = MainApp.getDbHelper().getTDDs();

        //only use newest 10
        historyList = historyList.subList(0, Math.min(10, historyList.size()));

        //fill single gaps
        dummies = new LinkedList();
        DateFormat df = new SimpleDateFormat("dd.MM.");
        for (int i = 0; i < historyList.size() - 1; i++) {
            TDD elem1 = historyList.get(i);
            TDD elem2 = historyList.get(i + 1);

            if (!df.format(new Date(elem1.date)).equals(df.format(new Date(elem2.date + 25 * 60 * 60 * 1000)))) {
                TDD dummy = new TDD();
                dummy.date = elem1.date - 24 * 60 * 60 * 1000;
                dummy.basal = elem1.basal / 2;
                dummy.bolus = elem1.bolus / 2;
                dummies.add(dummy);
                elem1.basal /= 2;
                elem1.bolus /= 2;
            }
        }
        historyList.addAll(dummies);
        Collections.sort(historyList, new Comparator<TDD>() {
            @Override
            public int compare(TDD lhs, TDD rhs) {
                return (int) (rhs.date - lhs.date);
            }
        });

        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                cleanTable(tl);
                cleanTable(ctl);
                cleanTable(etl);
                DateFormat df = new SimpleDateFormat("dd.MM.");

                if (TextUtils.isEmpty(TBB)) {
                    totalBaseBasal.setError("Please Enter Total Base Basal");
                    return;
                } else {
                    magicNumber = SafeParse.stringToDouble(TBB);
                }

                magicNumber *= 2;
                totalBaseBasal2.setText(decimalFormat.format(magicNumber));

                int i = 0;
                double sum = 0d;
                double weighted03 = 0d;
                double weighted05 = 0d;
                double weighted07 = 0d;


                //TDD table
                for (TDD record : historyList) {
                    double tdd = record.getTotal();

                    // Create the table row
                    TableRow tr = new TableRow(TDDStatsActivity.this);
                    if (i % 2 != 0) tr.setBackgroundColor(Color.DKGRAY);
                    if (dummies.contains(record)) {
                        tr.setBackgroundColor(Color.argb(125, 255, 0, 0));
                    }
                    tr.setId(100 + i);
                    tr.setLayoutParams(new TableLayout.LayoutParams(
                            TableLayout.LayoutParams.MATCH_PARENT,
                            TableLayout.LayoutParams.WRAP_CONTENT));

                    // Here create the TextView dynamically
                    TextView labelDATE = new TextView(TDDStatsActivity.this);
                    labelDATE.setId(200 + i);
                    labelDATE.setText(df.format(new Date(record.date)));
                    labelDATE.setTextColor(Color.WHITE);
                    tr.addView(labelDATE);

                    TextView labelBASAL = new TextView(TDDStatsActivity.this);
                    labelBASAL.setId(300 + i);
                    labelBASAL.setText(DecimalFormatter.to2Decimal(record.basal) + " U");
                    labelBASAL.setTextColor(Color.WHITE);
                    tr.addView(labelBASAL);

                    TextView labelBOLUS = new TextView(TDDStatsActivity.this);
                    labelBOLUS.setId(400 + i);
                    labelBOLUS.setText(DecimalFormatter.to2Decimal(record.bolus) + " U");
                    labelBOLUS.setTextColor(Color.WHITE);
                    tr.addView(labelBOLUS);

                    TextView labelTDD = new TextView(TDDStatsActivity.this);
                    labelTDD.setId(500 + i);
                    labelTDD.setText(DecimalFormatter.to2Decimal(tdd) + " U");
                    labelTDD.setTextColor(Color.WHITE);
                    tr.addView(labelTDD);

                    TextView labelRATIO = new TextView(TDDStatsActivity.this);
                    labelRATIO.setId(600 + i);
                    labelRATIO.setText(Math.round(100 * tdd / magicNumber) + " %");
                    labelRATIO.setTextColor(Color.WHITE);
                    tr.addView(labelRATIO);

                    // add stats rows to tables
                    tl.addView(tr, new TableLayout.LayoutParams(
                            TableLayout.LayoutParams.MATCH_PARENT,
                            TableLayout.LayoutParams.WRAP_CONTENT));

                    i++;
                }

                i = 0;

                //cumulative TDDs
                for (TDD record : historyList) {
                    if(!historyList.isEmpty() && df.format(new Date(record.date)).equals(df.format(new Date()))) {
                        //Today should not be included
                        continue;
                    }
                    i++;

                    sum = sum + record.getTotal();

                    // Create the cumtable row
                    TableRow ctr = new TableRow(TDDStatsActivity.this);
                    if (i % 2 == 0) ctr.setBackgroundColor(Color.DKGRAY);
                    ctr.setId(700 + i);
                    ctr.setLayoutParams(new TableLayout.LayoutParams(
                            TableLayout.LayoutParams.MATCH_PARENT,
                            TableLayout.LayoutParams.WRAP_CONTENT));

                    // Here create the TextView dynamically
                    TextView labelDAYS = new TextView(TDDStatsActivity.this);
                    labelDAYS.setId(800 + i);
                    labelDAYS.setText("" + i);
                    labelDAYS.setTextColor(Color.WHITE);
                    ctr.addView(labelDAYS);

                    TextView labelCUMTDD = new TextView(TDDStatsActivity.this);
                    labelCUMTDD.setId(900 + i);
                    labelCUMTDD.setText(DecimalFormatter.to2Decimal(sum / i) + " U");
                    labelCUMTDD.setTextColor(Color.WHITE);
                    ctr.addView(labelCUMTDD);

                    TextView labelCUMRATIO = new TextView(TDDStatsActivity.this);
                    labelCUMRATIO.setId(1000 + i);
                    labelCUMRATIO.setText(Math.round(100 * sum / i / magicNumber) + " %");
                    labelCUMRATIO.setTextColor(Color.WHITE);
                    ctr.addView(labelCUMRATIO);

                    // add cummulative rows to tables
                    ctl.addView(ctr, new TableLayout.LayoutParams(
                            TableLayout.LayoutParams.MATCH_PARENT,
                            TableLayout.LayoutParams.WRAP_CONTENT));
                }

                if (isOldData(historyList) && ConfigBuilderPlugin.getPlugin().getActivePump().getPumpDescription().needsManualTDDLoad) {
                    statsMessage.setVisibility(View.VISIBLE);
                    statsMessage.setText(MainApp.gs(R.string.danar_stats_olddata_Message));

                } else {
                    tl.setBackgroundColor(Color.TRANSPARENT);
                }

                if(!historyList.isEmpty() && df.format(new Date(historyList.get(0).date)).equals(df.format(new Date()))) {
                    //Today should not be included
                    historyList.remove(0);
                }

                Collections.reverse(historyList);

                i = 0;

                for (TDD record : historyList) {
                    double tdd = record.getTotal();
                    if (i == 0) {
                        weighted03 = tdd;
                        weighted05 = tdd;
                        weighted07 = tdd;

                    } else {
                        weighted07 = (weighted07 * 0.3 + tdd * 0.7);
                        weighted05 = (weighted05 * 0.5 + tdd * 0.5);
                        weighted03 = (weighted03 * 0.7 + tdd * 0.3);
                    }
                    i++;
                }

                // Create the exptable row
                TableRow etr = new TableRow(TDDStatsActivity.this);
                if (i % 2 != 0) etr.setBackgroundColor(Color.DKGRAY);
                etr.setId(1100 + i);
                etr.setLayoutParams(new TableLayout.LayoutParams(
                        TableLayout.LayoutParams.MATCH_PARENT,
                        TableLayout.LayoutParams.WRAP_CONTENT));

                // Here create the TextView dynamically
                TextView labelWEIGHT = new TextView(TDDStatsActivity.this);
                labelWEIGHT.setId(1200 + i);
                labelWEIGHT.setText("0.3\n" + "0.5\n" + "0.7");
                labelWEIGHT.setTextColor(Color.WHITE);
                etr.addView(labelWEIGHT);

                TextView labelEXPTDD = new TextView(TDDStatsActivity.this);
                labelEXPTDD.setId(1300 + i);
                labelEXPTDD.setText(DecimalFormatter.to2Decimal(weighted03)
                        + " U\n" + DecimalFormatter.to2Decimal(weighted05)
                        + " U\n" + DecimalFormatter.to2Decimal(weighted07) + " U");
                labelEXPTDD.setTextColor(Color.WHITE);
                etr.addView(labelEXPTDD);

                TextView labelEXPRATIO = new TextView(TDDStatsActivity.this);
                labelEXPRATIO.setId(1400 + i);
                labelEXPRATIO.setText(Math.round(100 * weighted03 / magicNumber) + " %\n"
                        + Math.round(100 * weighted05 / magicNumber) + " %\n"
                        + Math.round(100 * weighted07 / magicNumber) + " %");
                labelEXPRATIO.setTextColor(Color.WHITE);
                etr.addView(labelEXPRATIO);

                // add exponentail rows to tables
                etl.addView(etr, new TableLayout.LayoutParams(
                        TableLayout.LayoutParams.MATCH_PARENT,
                        TableLayout.LayoutParams.WRAP_CONTENT));
            }
        });
    }

    private void cleanTable(TableLayout table) {
        int childCount = table.getChildCount();
        // Remove all rows except the first one
        if (childCount > 1) {
            table.removeViews(1, childCount - 1);
        }
    }

    @Subscribe
    public void onStatusEvent(final EventDanaRSyncStatus s) {
        log.debug("EventDanaRSyncStatus: " + s.message);
        runOnUiThread(
                new Runnable() {
                    @Override
                    public void run() {
                        statusView.setText(s.message);
                    }
                });
    }

    @Subscribe
    public void onStatusEvent(final EventPumpStatusChanged c) {
        runOnUiThread(
                new Runnable() {
                    @Override
                    public void run() {
                        statusView.setText(c.textStatus());
                    }
                }
        );
    }


    public static boolean isOldData(List<TDD> historyList) {
        Object activePump = ConfigBuilderPlugin.getPlugin().getActivePump();
        PumpInterface dana = MainApp.getSpecificPlugin(DanaRPlugin.class);
        PumpInterface danaRS = MainApp.getSpecificPlugin(DanaRSPlugin.class);
        PumpInterface danaV2 = MainApp.getSpecificPlugin(DanaRv2Plugin.class);
        PumpInterface danaKorean = MainApp.getSpecificPlugin(DanaRKoreanPlugin.class);
        PumpInterface insight = MainApp.getSpecificPlugin(InsightPlugin.class);

        boolean startsYesterday = activePump == dana || activePump == danaRS || activePump == danaV2 || activePump == danaKorean || activePump == insight;

        DateFormat df = new SimpleDateFormat("dd.MM.");
        return (historyList.size() < 3 || !(df.format(new Date(historyList.get(0).date)).equals(df.format(new Date(System.currentTimeMillis() - (startsYesterday?1000 * 60 * 60 * 24:0))))));
    }
}