package com.grigowashere.aismap.ui;

import android.content.Context;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.TextView;
import com.google.android.material.bottomsheet.BottomSheetDialog;

import com.grigowashere.aismap.R;
import com.grigowashere.aismap.controllers.AppCoordinator;
import com.grigowashere.aismap.models.AISVessel;
import com.grigowashere.aismap.models.Vessel;

/**
 * Полный менеджер BottomSheet-ов: создание, показ, обновление и авто-обновление.
 * Делегирует всю прежнюю логику из MainActivity, чтобы разгрузить активити.
 */
public class BottomSheetsManager {

    private static final String TAG = "BottomSheetsManager";

    private final Context context;
    private final AppCoordinator appCoordinator;

    private BottomSheetDialog ownVesselBottomSheet;
    private View bottomSheetView;

    private BottomSheetDialog aisVesselBottomSheet;
    private View aisBottomSheetView;
    private AISVessel currentAISVessel;

    private android.os.Handler timeUpdateHandler;
    private Runnable timeUpdateRunnable;

    private android.os.Handler bottomSheetUpdateHandler;
    private Runnable bottomSheetUpdateRunnable;
    private static final int BOTTOM_SHEET_UPDATE_INTERVAL = 1000;

    public BottomSheetsManager(Context context, AppCoordinator appCoordinator) {
        this.context = context;
        this.appCoordinator = appCoordinator;
    }

    public void init() {
        // Время
        timeUpdateHandler = new android.os.Handler(android.os.Looper.getMainLooper());
        timeUpdateRunnable = new Runnable() {
            @Override public void run() {
                if (currentAISVessel != null && aisVesselBottomSheet != null && aisVesselBottomSheet.isShowing()) {
                    updateAISTimeAgo();
                }
                timeUpdateHandler.postDelayed(this, 1000);
            }
        };

        // Авто-обновление контента
        bottomSheetUpdateHandler = new android.os.Handler(android.os.Looper.getMainLooper());
        bottomSheetUpdateRunnable = new Runnable() {
            @Override public void run() {
                if (ownVesselBottomSheet != null && ownVesselBottomSheet.isShowing()) {
                    updateOwnVesselUI();
                }
                if (aisVesselBottomSheet != null && aisVesselBottomSheet.isShowing() && currentAISVessel != null) {
                    updateAISBottomSheetUI(currentAISVessel);
                }
                bottomSheetUpdateHandler.postDelayed(this, BOTTOM_SHEET_UPDATE_INTERVAL);
            }
        };

        // Наше судно
        ownVesselBottomSheet = new BottomSheetDialog(context);
        bottomSheetView = android.view.LayoutInflater.from(context).inflate(R.layout.bottom_sheet_own_vessel, null);
        ownVesselBottomSheet.setContentView(bottomSheetView);
        ImageButton btnClose = bottomSheetView.findViewById(R.id.btn_close_bottom_sheet);
        if (btnClose != null) {
            btnClose.setOnClickListener(v -> {
                ownVesselBottomSheet.dismiss();
                stopBottomSheetAutoUpdate();
            });
        }
        ownVesselBottomSheet.setCanceledOnTouchOutside(true);
        ownVesselBottomSheet.setCancelable(true);
        ownVesselBottomSheet.setOnDismissListener(dialog -> stopBottomSheetAutoUpdate());

        // AIS судно
        aisVesselBottomSheet = new BottomSheetDialog(context);
        aisBottomSheetView = android.view.LayoutInflater.from(context).inflate(R.layout.bottom_sheet_ais_vessel, null);
        aisVesselBottomSheet.setContentView(aisBottomSheetView);
        ImageButton btnCloseAIS = aisBottomSheetView.findViewById(R.id.btn_close_ais_bottom_sheet);
        if (btnCloseAIS != null) {
            btnCloseAIS.setOnClickListener(v -> {
                aisVesselBottomSheet.dismiss();
                stopTimeUpdate();
                stopBottomSheetAutoUpdate();
            });
        }
        aisVesselBottomSheet.setCanceledOnTouchOutside(true);
        aisVesselBottomSheet.setCancelable(true);
        aisVesselBottomSheet.setOnDismissListener(dialog -> {
            stopTimeUpdate();
            stopBottomSheetAutoUpdate();
        });
    }

    public void showOwnVessel() {
        if (ownVesselBottomSheet != null && !ownVesselBottomSheet.isShowing()) {
            updateOwnVesselUI();
            ownVesselBottomSheet.show();
            startBottomSheetAutoUpdate();
        }
    }

    public void showAISVessel(AISVessel vessel) {
        if (aisVesselBottomSheet != null && !aisVesselBottomSheet.isShowing()) {
            currentAISVessel = vessel;
            updateAISBottomSheetUI(vessel);
            aisVesselBottomSheet.show();
            startTimeUpdate();
            startBottomSheetAutoUpdate();
        }
    }

    public void updateOwnVesselUI() {
        if (bottomSheetView == null) return;
        Vessel vessel = appCoordinator.getOwnVessel();
        if (vessel == null) return;

        TextView tvStatus = bottomSheetView.findViewById(R.id.bottom_sheet_status);
        TextView tvPosition = bottomSheetView.findViewById(R.id.bottom_sheet_position);
        TextView tvCourse = bottomSheetView.findViewById(R.id.bottom_sheet_course);
        TextView tvSpeed = bottomSheetView.findViewById(R.id.bottom_sheet_speed);
        TextView tvAltitude = bottomSheetView.findViewById(R.id.bottom_sheet_altitude);
        TextView tvAccuracy = bottomSheetView.findViewById(R.id.bottom_sheet_accuracy);
        TextView tvGPSQuality = bottomSheetView.findViewById(R.id.bottom_sheet_gps_quality);
        TextView tvSatellites = bottomSheetView.findViewById(R.id.bottom_sheet_satellites);
        TextView tvDOP = bottomSheetView.findViewById(R.id.bottom_sheet_dop);
        TextView tvFixTime = bottomSheetView.findViewById(R.id.bottom_sheet_fix_time);
        TextView tvFixQuality = bottomSheetView.findViewById(R.id.bottom_sheet_fix_quality);

        if (tvStatus != null) tvStatus.setText((vessel.getLatitude()!=0 && vessel.getLongitude()!=0) ? "Статус: GPS активен, данные получены" : "Статус: Ожидание GPS данных...");
        if (tvPosition != null) tvPosition.setText((vessel.getLatitude()!=0 && vessel.getLongitude()!=0) ? String.format("📍 Координаты: %.6f, %.6f", vessel.getLatitude(), vessel.getLongitude()) : "📍 Координаты: Не определены");
        if (tvCourse != null) tvCourse.setText((vessel.getCourse()>0) ? String.format("🧭 Курс: %.1f°", vessel.getCourse()) : "🧭 Курс: --°");
        if (tvSpeed != null) tvSpeed.setText((vessel.getSpeed()>0) ? String.format("⚡ Скорость: %.1f узлов", vessel.getSpeed()) : "⚡ Скорость: -- узлов");
        if (tvAltitude != null) tvAltitude.setText((vessel.getAltitude()!=0) ? String.format("🏔️ Высота: %.1f м", vessel.getAltitude()) : "🏔️ Высота: -- м");
        if (tvAccuracy != null) tvAccuracy.setText((vessel.getAccuracy()>0) ? String.format("🎯 Точность: %.1f м", vessel.getAccuracy()) : "🎯 Точность: -- м");
        if (tvGPSQuality != null) tvGPSQuality.setText((vessel.getGPSQualityDescription()!=null) ? String.format("📊 Качество GPS: %s", vessel.getGPSQualityDescription()) : "📊 Качество GPS: --");
        if (tvSatellites != null) tvSatellites.setText((vessel.getSatellites()>0) ? String.format("Спутники: %d/%d", vessel.getActiveSatellites(), vessel.getSatellites()) : "Спутники: --/--");
        if (tvDOP != null) tvDOP.setText((vessel.getPdop()>0) ? String.format("📈 DOP: PDOP=%.2f HDOP=%.2f VDOP=%.2f", vessel.getPdop(), vessel.getHdop(), vessel.getVdop()) : "📈 DOP: PDOP=-- HDOP=-- VDOP=--");
        if (tvFixTime != null) {
            String t = vessel.getFixTimeNmea();
            if (t != null && !t.isEmpty()) {
                String pretty = t;
                int dot = pretty.indexOf('.');
                if (dot > 0) pretty = pretty.substring(0, dot);
                if (pretty.length() == 6) {
                    pretty = pretty.substring(0,2) + ":" + pretty.substring(2,4) + ":" + pretty.substring(4,6);
                }
                tvFixTime.setText(String.format("🕐 Время фикса: %s", pretty));
            } else if (vessel.getFixTime() > 0) {
                tvFixTime.setText(String.format("🕐 Время фикса: %s", new java.text.SimpleDateFormat("HH:mm:ss", java.util.Locale.getDefault()).format(new java.util.Date(vessel.getFixTime()))));
            } else {
                tvFixTime.setText("🕐 Время фикса: --");
            }
        }
        if (tvFixQuality != null) tvFixQuality.setText((vessel.getFixQuality()!=null) ? String.format("🔒 Качество фикса: %s", vessel.getFixQuality()) : "🔒 Качество фикса: --");
    }

    public void updateAISBottomSheetUI(AISVessel vessel) {
        if (aisBottomSheetView == null || vessel == null) return;
        if (currentAISVessel != null && currentAISVessel.getMmsi() != null && currentAISVessel.getMmsi().equals(vessel.getMmsi())) {
            currentAISVessel = vessel;
        }

        TextView tvTitle = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_title);
        TextView tvMmsi = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_mmsi);
        TextView tvCallsign = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_callsign);
        TextView tvImo = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_imo);
        TextView tvType = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_type);
        TextView tvPosition = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_position);
        TextView tvCourse = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_course);
        TextView tvRot = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_rot);
        TextView tvHeading = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_heading);
        TextView tvSpeed = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_speed);
        TextView tvDimensions = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_dimensions);
        TextView tvDraft = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_draft);
        TextView tvDestination = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_destination);
        TextView tvEta = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_eta);
        TextView tvNavStatus = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_nav_status);
        TextView tvClass = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_class);
        TextView tvSignal = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_signal);
        TextView tvDistance = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_distance);
        TextView tvBearing = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_bearing);
        TextView tvCpa = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_cpa);
        TextView tvLastUpdate = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_last_update);
        TextView tvTimeAgo = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_time_ago);

        if (tvTitle != null) {
            String name = vessel.getVesselName() != null && !vessel.getVesselName().isEmpty() ? vessel.getVesselName() : "AIS СУДНО";
            // Флаг страны по MMSI оставляем — это единственный визуальный
            // маркер, который тут реально несёт смысл. Остальные эмодзи в
            // карточке цели убраны, чтобы текст не выглядел как чат.
            String flag = getFlagEmojiForMMSI(vessel.getMmsi());
            tvTitle.setText((flag != null ? flag + "  " : "") + name);
        }
        if (tvMmsi != null) tvMmsi.setText("MMSI: " + (vessel.getMmsi() != null ? vessel.getMmsi() : "--"));
        if (tvCallsign != null) tvCallsign.setText("Позывной: " + (vessel.getCallSign() != null ? vessel.getCallSign() : "--"));
        if (tvImo != null) tvImo.setText("IMO: " + (vessel.getImo() > 0 ? String.valueOf(vessel.getImo()) : "--"));
        if (tvType != null) tvType.setText("Тип: " + (vessel.getVesselType() != null ? vessel.getVesselType() : "--"));

        if (tvPosition != null) {
            if (vessel.getLatitude() != 0 && vessel.getLongitude() != 0) {
                tvPosition.setText(String.format("Координаты: %.6f, %.6f", vessel.getLatitude(), vessel.getLongitude()));
            } else {
                tvPosition.setText("Координаты: --");
            }
        }
        if (tvCourse != null) tvCourse.setText(vessel.getCourse() > 0 ? String.format("COG: %.1f°", vessel.getCourse()) : "COG: --°");
        if (tvRot != null) tvRot.setText(vessel.getRateOfTurn() != 0 ? String.format("ROT: %.1f°/мин", vessel.getRateOfTurn()) : "ROT: --°/мин");
        if (tvHeading != null) tvHeading.setText(vessel.getHeading() > 0 ? String.format("HDG: %.1f°", vessel.getHeading()) : "HDG: --°");
        if (tvSpeed != null) tvSpeed.setText(vessel.getSpeed() > 0 ? String.format("Скорость: %.1f узлов", vessel.getSpeed()) : "Скорость: -- узлов");
        if (tvDimensions != null) tvDimensions.setText((vessel.getLength() > 0 && vessel.getWidth() > 0) ? String.format("Размеры: %.1f x %.1f м", vessel.getLength(), vessel.getWidth()) : "Размеры: --");
        if (tvDraft != null) tvDraft.setText(vessel.getDraft() > 0 ? String.format("Осадка: %.1f м", vessel.getDraft()) : "Осадка: -- м");
        if (tvDestination != null) tvDestination.setText("Назначение: " + (vessel.getDestination() != null ? vessel.getDestination() : "--"));
        if (tvEta != null) tvEta.setText(vessel.getEta() != null ? String.format("ETA: %s", vessel.getEta().format(java.time.format.DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm"))) : "ETA: --");
        if (tvNavStatus != null) tvNavStatus.setText("Статус: " + (vessel.getNavigationalStatus() != null ? vessel.getNavigationalStatus() : "--"));
        if (tvClass != null) tvClass.setText("Класс: " + (vessel.getVesselClass() != null ? vessel.getVesselClass() : "--"));
        if (tvSignal != null) {
            if (vessel.getSignalStrength() > 0) {
                tvSignal.setText(String.format("Сигнал: %d", vessel.getSignalStrength()));
            } else {
                tvSignal.setText(vessel.isPositionAccuracy() ? "Точность: высокая" : "Точность: низкая");
            }
        }
        if (tvLastUpdate != null) tvLastUpdate.setText(vessel.getLastUpdate() != null ? String.format("Обновлено: %s", vessel.getLastUpdate().format(java.time.format.DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm:ss"))) : "Обновлено: --");

        if (tvDistance != null || tvBearing != null || tvCpa != null) {
            Vessel ourVessel = appCoordinator.getOwnVessel();
            String cpaNa = context.getString(R.string.cpa_na);
            if (ourVessel != null && ourVessel.getLatitude() != 0 && ourVessel.getLongitude() != 0
                    && vessel.getLatitude() != 0 && vessel.getLongitude() != 0) {
                double distance = com.grigowashere.aismap.utils.NavigationUtils.calculateDistance(
                        ourVessel.getLatitude(), ourVessel.getLongitude(),
                        vessel.getLatitude(), vessel.getLongitude());
                if (tvDistance != null) {
                    tvDistance.setText("Расстояние: "
                            + com.grigowashere.aismap.utils.NavigationUtils.formatDistance(distance));
                }
                double bearing = com.grigowashere.aismap.utils.NavigationUtils.calculateBearing(
                        ourVessel.getLatitude(), ourVessel.getLongitude(),
                        vessel.getLatitude(), vessel.getLongitude());
                double relativeBearing = com.grigowashere.aismap.utils.NavigationUtils.calculateRelativeBearing(
                        ourVessel.getCourse(), bearing);
                if (tvBearing != null) {
                    tvBearing.setText("Пеленг: "
                            + com.grigowashere.aismap.utils.NavigationUtils.formatRelativeBearing(relativeBearing));
                }
                if (tvCpa != null) {
                    com.grigowashere.aismap.utils.SettingsManager sm =
                            new com.grigowashere.aismap.utils.SettingsManager(context);
                    boolean useNm = com.grigowashere.aismap.utils.SettingsManager.RANGE_UNIT_NM
                            .equals(sm.getRangeUnit());
                    com.grigowashere.aismap.utils.RangeMath.CpaResult cpa =
                            com.grigowashere.aismap.utils.RangeMath.calculateCpa(
                                    ourVessel.getLatitude(), ourVessel.getLongitude(),
                                    ourVessel.getSpeed(), ourVessel.getCourse(), ourVessel.getHeading(),
                                    vessel.getLatitude(), vessel.getLongitude(),
                                    vessel.getSpeed(), vessel.getCourse(), vessel.getHeading());
                    if (cpa.valid) {
                        String cpaDist = com.grigowashere.aismap.utils.RangeMath.formatCpaDistance(
                                cpa.cpaMeters, useNm, java.util.Locale.getDefault());
                        String tcpa = com.grigowashere.aismap.utils.RangeMath.formatTcpa(
                                cpa.tcpaMinutes, java.util.Locale.getDefault());
                        tvCpa.setText(context.getString(R.string.bottom_sheet_ais_cpa, cpaDist, tcpa));
                    } else {
                        tvCpa.setText(context.getString(R.string.bottom_sheet_ais_cpa, cpaNa, cpaNa));
                    }
                }
            } else {
                if (tvDistance != null) tvDistance.setText("Расстояние: --");
                if (tvBearing != null) tvBearing.setText("Пеленг: --");
                if (tvCpa != null) tvCpa.setText(context.getString(R.string.bottom_sheet_ais_cpa, cpaNa, cpaNa));
            }
        }

        if (tvTimeAgo != null) {
            if (vessel.getLastUpdate() != null) {
                long secondsAgo = java.time.Duration.between(vessel.getLastUpdate(), java.time.LocalDateTime.now()).getSeconds();
                tvTimeAgo.setText("Время назад: " + formatTimeAgo(secondsAgo));
            } else {
                tvTimeAgo.setText("Время назад: --");
            }
        }
    }

    public void startTimeUpdate() {
        if (timeUpdateHandler != null && timeUpdateRunnable != null) {
            timeUpdateHandler.postDelayed(timeUpdateRunnable, 1000);
        }
    }

    public void stopTimeUpdate() {
        if (timeUpdateHandler != null && timeUpdateRunnable != null) {
            timeUpdateHandler.removeCallbacks(timeUpdateRunnable);
        }
        currentAISVessel = null;
    }

    public void startBottomSheetAutoUpdate() {
        if (bottomSheetUpdateHandler != null && bottomSheetUpdateRunnable != null) {
            bottomSheetUpdateHandler.removeCallbacks(bottomSheetUpdateRunnable);
            bottomSheetUpdateHandler.postDelayed(bottomSheetUpdateRunnable, BOTTOM_SHEET_UPDATE_INTERVAL);
            Log.i(TAG, "Автоматическое обновление BottomSheet запущено");
        }
    }

    public void stopBottomSheetAutoUpdate() {
        if (bottomSheetUpdateHandler != null && bottomSheetUpdateRunnable != null) {
            bottomSheetUpdateHandler.removeCallbacks(bottomSheetUpdateRunnable);
            Log.i(TAG, "Автоматическое обновление BottomSheet остановлено");
        }
    }

    public void updateAISTimeAgo() {
        if (aisBottomSheetView == null || currentAISVessel == null) return;
        TextView tvTimeAgo = aisBottomSheetView.findViewById(R.id.bottom_sheet_ais_time_ago);
        if (tvTimeAgo != null && currentAISVessel.getLastUpdate() != null) {
            long secondsAgo = java.time.Duration.between(currentAISVessel.getLastUpdate(), java.time.LocalDateTime.now()).getSeconds();
            tvTimeAgo.setText("Время назад: " + formatTimeAgo(secondsAgo));
        }
    }

    public void cleanup() {
        stopTimeUpdate();
        stopBottomSheetAutoUpdate();
        try { if (ownVesselBottomSheet != null) ownVesselBottomSheet.dismiss(); } catch (Exception ignore) {}
        try { if (aisVesselBottomSheet != null) aisVesselBottomSheet.dismiss(); } catch (Exception ignore) {}
    }

    private String formatTimeAgo(long seconds) {
        if (seconds < 60) return seconds + " сек";
        if (seconds < 3600) return (seconds / 60) + " мин";
        if (seconds < 86400) return (seconds / 3600) + " ч";
        return (seconds / 86400) + " дн";
    }

    private String getFlagEmojiForMMSI(String mmsi) {
        try {
            if (mmsi == null || mmsi.length() < 3) return null;
            String mid = mmsi.substring(0, 3);
            String iso2 = com.grigowashere.aismap.utils.MIDToCountry.MID_TO_COUNTRY.get(mid);
            if (iso2 == null || iso2.length() != 2) return null;
            char a = Character.toUpperCase(iso2.charAt(0));
            char b = Character.toUpperCase(iso2.charAt(1));
            int base = 0x1F1E6;
            int cp1 = base + (a - 'A');
            int cp2 = base + (b - 'A');
            return new String(Character.toChars(cp1)) + new String(Character.toChars(cp2));
        } catch (Exception ignored) {
            return null;
        }
    }
}