package com.mapswithme.maps.editor;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.app.AlertDialog;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.mapswithme.maps.R;
import com.mapswithme.maps.base.BaseMwmFragment;
import com.mapswithme.maps.base.OnBackPressListener;

public class TimetableFragment extends BaseMwmFragment
                            implements View.OnClickListener,
                                       OnBackPressListener
{
  interface TimetableProvider
  {
    String getTimetables();
  }

  public static final String EXTRA_TIME = "Time";

  private boolean mIsAdvancedMode;

  private TextView mSwitchMode;

  // TODO @yunikkk simplify, extract interface
  private SimpleTimetableFragment mSimpleModeFragment;
  private AdvancedTimetableFragment mAdvancedModeFragment;

  protected EditorHostFragment mParent;

  @Nullable
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
  {
    return inflater.inflate(R.layout.fragment_timetable, container, false);
  }

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

    mParent = (EditorHostFragment) getParentFragment();

    initViews(view);
    mIsAdvancedMode = true;
    switchMode();

    final Bundle args = getArguments();
    if (args != null && !TextUtils.isEmpty(args.getString(EXTRA_TIME)))
      mSimpleModeFragment.setTimetables(args.getString(EXTRA_TIME));
  }

  public String getTimetable()
  {
    return mIsAdvancedMode ? mAdvancedModeFragment.getTimetables()
                           : mSimpleModeFragment.getTimetables();
  }

  private void initViews(View root)
  {
    mSwitchMode = (TextView) root.findViewById(R.id.tv__mode_switch);
    mSwitchMode.setOnClickListener(this);
  }

  @Override
  public void onClick(View v)
  {
    switch (v.getId())
    {
    case R.id.tv__mode_switch:
      switchMode();
      break;
    }
  }

  @Override
  public boolean onBackPressed()
  {
    return false;
  }

  private void switchMode()
  {
    if (!mIsAdvancedMode)
    {
      final String filledTimetables = mSimpleModeFragment != null ? mSimpleModeFragment.getTimetables()
                                                                  : OpeningHours.nativeTimetablesToString(OpeningHours.nativeGetDefaultTimetables());
      if (!OpeningHours.nativeIsTimetableStringValid(filledTimetables))
      {
        new AlertDialog.Builder(getActivity())
            .setMessage(R.string.editor_correct_mistake)
            .setPositiveButton(android.R.string.ok, null)
            .show();
        return;
      }
      mIsAdvancedMode = true;
      mSwitchMode.setText(R.string.editor_time_simple);
      mAdvancedModeFragment = (AdvancedTimetableFragment) attachFragment(mAdvancedModeFragment, AdvancedTimetableFragment.class.getName());
      mAdvancedModeFragment.setTimetables(filledTimetables);
    }
    else
    {
      final String filledTimetables = mAdvancedModeFragment != null ? mAdvancedModeFragment.getTimetables()
                                                                    : OpeningHours.nativeTimetablesToString(OpeningHours.nativeGetDefaultTimetables());
      if (!OpeningHours.nativeIsTimetableStringValid(filledTimetables))
      {
        new AlertDialog.Builder(getActivity())
            .setMessage(R.string.editor_correct_mistake)
            .setPositiveButton(android.R.string.ok, null)
            .show();
        return;
      }
      mIsAdvancedMode = false;
      mSwitchMode.setText(R.string.editor_time_advanced);
      mSimpleModeFragment = (SimpleTimetableFragment) attachFragment(mSimpleModeFragment, SimpleTimetableFragment.class.getName());
      mSimpleModeFragment.setTimetables(filledTimetables);
    }
  }

  private Fragment attachFragment(Fragment current, String className)
  {
    Fragment fragment = current == null ? Fragment.instantiate(getActivity(), className)
                                        : current;
    getChildFragmentManager().beginTransaction().replace(R.id.fragment_container, fragment).commit();
    return fragment;
  }
}