package com.example.citrusclient.views;

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.DialogFragment;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;

import android.text.Editable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Switch;
import android.widget.TimePicker;

import com.example.citrusclient.Citrus;
import com.example.citrusclient.R;
import com.example.citrusclient.models.Book;
import com.example.citrusclient.viewmodels.BooksViewModel;
import com.example.citrusclient.viewmodels.ScheduleViewModel;
import com.google.android.material.snackbar.Snackbar;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;

/**
 * A simple {@link Fragment} subclass.
 * Use the {@link CreateScheduleFragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class CreateScheduleFragment extends Fragment {

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    public CreateScheduleFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param param1 Parameter 1.
     * @param param2 Parameter 2.
     * @return A new instance of fragment CreateScheduleFragment.
     */
    // TODO: Rename and change types and number of parameters
    public static CreateScheduleFragment newInstance(String param1, String param2) {
        CreateScheduleFragment fragment = new CreateScheduleFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_create_schedule, container, false);
    }


    BooksViewModel booksViewModel;
    ScheduleViewModel scheduleViewModel;


    List<String> bookTitles;

    int year;
    int month;
    int day;
    int hour;
    int minute;

    String accountId;
    String token;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }

        booksViewModel = new ViewModelProvider(this).get(BooksViewModel.class);
        scheduleViewModel = new ViewModelProvider(this).get(ScheduleViewModel.class);
        Calendar c = Calendar.getInstance();
        year = c.get(Calendar.YEAR);
        month = c.get(Calendar.MONTH);
        day = c.get(Calendar.DAY_OF_MONTH);
        hour = c.get(Calendar.HOUR);
        minute = c.get(Calendar.MINUTE);

        Citrus citrus = (Citrus)(getActivity().getApplication());
        accountId = citrus.getAccountId();
        token = citrus.getToken();

    }


    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        Button startDateButton = view.findViewById(R.id.start_date_button);
        Button startTimeButton = view.findViewById(R.id.start_time_button);
        Button endDateButton = view.findViewById(R.id.end_date_button);
        Button endTimeButton = view.findViewById(R.id.end_time_button);

        startDateButton.setText(year + "/" + (month + 1) + "/" + day);
        startTimeButton.setText("00:00");
        endDateButton.setText(year + "/" + (month + 1) + "/" + day);
        endTimeButton.setText("23:59");

        startDateButton.setOnClickListener(v->{
            DatePickerDialog datePickerDialog = new DatePickerDialog(requireContext(), new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                    String date = year + "/" + (month + 1) + "/" + dayOfMonth;
                    startDateButton.setText(date);
                }
            }, year, month, day);
            datePickerDialog.show();
        });
        startTimeButton.setOnClickListener(v -> {
            TimePickerDialog timePickerDialog = new TimePickerDialog(requireContext(), new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    String time = hourOfDay + ":" + minute;
                    startTimeButton.setText(time);
                }
            }, hour, minute, true);
            timePickerDialog.show();
        });
        endDateButton.setOnClickListener(v->{
            DatePickerDialog datePickerDialog = new DatePickerDialog(requireContext(), new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                    String date = year + "/" + (month + 1) + "/" + dayOfMonth;
                    endDateButton.setText(date);
                }
            }, year, month, day);
            datePickerDialog.show();
        });
        endTimeButton.setOnClickListener(v -> {
            TimePickerDialog timePickerDialog = new TimePickerDialog(requireContext(), new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    String time = hourOfDay + ":" + minute;
                    endTimeButton.setText(time);
                }
            }, hour, minute, true);
            timePickerDialog.show();
        });

        Switch allDaySwitch = view.findViewById(R.id.all_day_switch);
        allDaySwitch.setOnCheckedChangeListener((buttonView, isChecked) -> {
            if(isChecked){
                startTimeButton.setTextColor(Color.GRAY);
                startTimeButton.setText("00:00");
                endDateButton.setTextColor(Color.GRAY);
                endDateButton.setText(startDateButton.getText());
                endTimeButton.setTextColor(Color.GRAY);
                endTimeButton.setText("23:59");
            }else{
                startTimeButton.setTextColor(Color.BLACK);
                endDateButton.setTextColor(Color.BLACK);
                endTimeButton.setTextColor(Color.BLACK);
            }
            startTimeButton.setEnabled(!isChecked);
            endDateButton.setEnabled(!isChecked);
            endTimeButton.setEnabled(!isChecked);
        });

        Button cancelButton = view.findViewById(R.id.schedule_cancel_button);
        cancelButton.setOnClickListener(v->{
            ((MainActivity)getActivity()).backFragment();
        });

        Spinner spinner = view.findViewById(R.id.select_book_spinner);
        bookTitles = new ArrayList<>();
        bookTitles.add("本を選択しない");
        booksViewModel.getBookLiveData().observe(getViewLifecycleOwner(), new Observer<HashMap<Integer, Book>>() {
            @Override
            public void onChanged(HashMap<Integer, Book> integerBookHashMap) {
                if(integerBookHashMap != null){
                    for(int i : integerBookHashMap.keySet()){
                        bookTitles.add(integerBookHashMap.get(i).getTitle());
                    }
                }else{
                    bookTitles = new ArrayList<>();
                }
            }
        });

        booksViewModel.loadBooks(accountId, token);


        ArrayAdapter<String> adapter = new ArrayAdapter<>(requireContext(), androidx.appcompat.R.layout.support_simple_spinner_dropdown_item, bookTitles);
        adapter.setDropDownViewResource(androidx.appcompat.R.layout.support_simple_spinner_dropdown_item);
        spinner.setAdapter(adapter);


        EditText scheduleTitle = view.findViewById(R.id.schedule_title);
        Button confirmButton = view.findViewById(R.id.schedule_create_confirm);
        confirmButton.setOnClickListener(v -> {
            String[] dates = ((String)startDateButton.getText()).split("/");
            int year = Integer.parseInt(dates[0]);
            int month = Integer.parseInt(dates[1]);
            int day = Integer.parseInt(dates[2]);
            Editable tmp = scheduleTitle.getText();
            if(tmp == null){
                Snackbar.make(view, "タイトルを入力してください", Snackbar.LENGTH_SHORT).show();
                return;
            }
            String title = scheduleTitle.getText().toString();
            if(title == null || title.isEmpty()){
                Snackbar.make(view, "タイトルを入力してください", Snackbar.LENGTH_SHORT).show();
                return;
            }
            //
            String startDateTime = startDateButton.getText() + " " + startTimeButton.getText();
            String endDateTime = endDateButton.getText() + " " + endTimeButton.getText();
            scheduleViewModel.createSchedule(accountId, year, month, day, token, title, startDateTime, endDateTime, spinner.getSelectedItemPosition());
            ((MainActivity)getActivity()).backFragment();
        });


    }

}