package org.mian.gitnex.fragments;

import android.animation.ValueAnimator;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.FragmentActivity;
import com.google.android.material.bottomsheet.BottomSheetBehavior;
import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
import com.vdurmont.emoji.EmojiParser;
import java.util.Objects;
import org.mian.gitnex.R;
import org.mian.gitnex.actions.ActionResult;
import org.mian.gitnex.actions.IssueActions;
import org.mian.gitnex.activities.BaseActivity;
import org.mian.gitnex.activities.IssueDetailActivity;
import org.mian.gitnex.activities.MainActivity;
import org.mian.gitnex.database.api.BaseApi;
import org.mian.gitnex.database.api.DraftsApi;
import org.mian.gitnex.databinding.BottomSheetReplyLayoutBinding;
import org.mian.gitnex.helpers.AppDatabaseSettings;
import org.mian.gitnex.helpers.Constants;
import org.mian.gitnex.helpers.TinyDB;
import org.mian.gitnex.helpers.Toasty;
import org.mian.gitnex.helpers.contexts.IssueContext;

/**
 * @author opyale
 */
public class BottomSheetReplyFragment extends BottomSheetDialogFragment {

	private Mode mode = Mode.SEND;
	private TinyDB tinyDB;
	private DraftsApi draftsApi;
	private int currentActiveAccountId;
	private IssueContext issue;
	private long draftId;
	private Runnable onInteractedListener;
	private TextView draftsHint;

	public static BottomSheetReplyFragment newInstance(Bundle bundle, IssueContext issue) {

		BottomSheetReplyFragment fragment = new BottomSheetReplyFragment();
		bundle.putSerializable(IssueContext.INTENT_EXTRA, issue);
		fragment.setArguments(bundle);

		return fragment;
	}

	@Override
	public void onAttach(@NonNull Context context) {

		super.onAttach(context);

		tinyDB = TinyDB.getInstance(context);
		draftsApi = BaseApi.getInstance(context, DraftsApi.class);

		currentActiveAccountId =
				((BaseActivity) requireActivity()).getAccount().getAccount().getAccountId();
		issue = IssueContext.fromBundle(requireArguments());
	}

	@SuppressLint("ClickableViewAccessibility")
	@Nullable @Override
	public View onCreateView(
			@NonNull LayoutInflater inflater,
			@Nullable ViewGroup container,
			@Nullable Bundle savedInstanceState) {

		BottomSheetReplyLayoutBinding bottomSheetReplyLayoutBinding =
				BottomSheetReplyLayoutBinding.inflate(inflater, container, false);
		Bundle arguments = requireArguments();

		draftsHint = bottomSheetReplyLayoutBinding.draftsHint;

		EditText comment = bottomSheetReplyLayoutBinding.comment;
		TextView toolbarTitle = bottomSheetReplyLayoutBinding.toolbarTitle;
		ImageButton close = bottomSheetReplyLayoutBinding.close;
		ImageButton drafts = bottomSheetReplyLayoutBinding.drafts;
		ImageButton send = bottomSheetReplyLayoutBinding.send;

		send.setEnabled(false);

		if (Objects.equals(arguments.getString("commentAction"), "edit")
				&& arguments.getString("draftId") == null) {

			send.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_save));
			mode = Mode.EDIT;
		}

		if (arguments.getString("draftId") != null) {

			draftId = Long.parseLong(arguments.getString("draftId"));
		}

		if (issue.getIssue() != null && !issue.getIssue().getTitle().isEmpty()) {

			toolbarTitle.setText(EmojiParser.parseToUnicode(issue.getIssue().getTitle()));
		} else if (arguments.getString("draftTitle") != null) {

			toolbarTitle.setText(arguments.getString("draftTitle"));
		}

		if (arguments.getString("commentBody") != null) {

			send.setEnabled(true);
			send.setAlpha(1f);

			comment.setText(arguments.getString("commentBody"));

			if (arguments.getBoolean("cursorToEnd", false)) {

				comment.setSelection(comment.length());
			}
		}

		comment.requestFocus();
		comment.setOnTouchListener(
				(v, event) -> {
					BottomSheetBehavior<View> bottomSheetBehavior =
							BottomSheetBehavior.from(
									(View) bottomSheetReplyLayoutBinding.getRoot().getParent());

					switch (event.getAction()) {
						case MotionEvent.ACTION_DOWN:
						case MotionEvent.ACTION_SCROLL:
							bottomSheetBehavior.setDraggable(false);
							break;

						default:
							bottomSheetBehavior.setDraggable(true);
					}

					return false;
				});

		comment.addTextChangedListener(
				new TextWatcher() {

					@Override
					public void afterTextChanged(Editable s) {

						String text = comment.getText().toString();

						if (text.isEmpty()) {

							send.setEnabled(false);
							send.setAlpha(0.5f);
							saveDraft(null, true);
						} else {

							send.setEnabled(true);
							send.setAlpha(1f);
							saveDraft(text, false);
						}
					}

					@Override
					public void beforeTextChanged(
							CharSequence s, int start, int count, int after) {}

					@Override
					public void onTextChanged(CharSequence s, int start, int before, int count) {}
				});

		close.setOnClickListener(v -> dismiss());

		drafts.setOnClickListener(
				v -> {
					Intent intent = new Intent(getContext(), MainActivity.class);
					intent.putExtra("launchFragment", "drafts");
					startActivity(intent);

					dismiss();
				});

		send.setOnClickListener(
				v -> {
					if (mode == Mode.SEND) {

						IssueActions.reply(getContext(), comment.getText().toString(), issue)
								.accept(
										(status, result) -> {
											if (status == ActionResult.Status.SUCCESS) {

												IssueDetailActivity.commentPosted = true;

												Toasty.success(
														getContext(),
														getString(R.string.commentSuccess));

												if (draftId != 0
														&& Boolean.parseBoolean(
																AppDatabaseSettings
																		.getSettingsValue(
																				getContext(),
																				AppDatabaseSettings
																						.APP_DRAFTS_DELETION_KEY))) {
													draftsApi.deleteSingleDraft((int) draftId);
												}

												if (onInteractedListener != null) {
													onInteractedListener.run();
												}
											} else {

												Toasty.error(
														getContext(),
														getString(R.string.genericError));
											}

											dismiss();
										});
					} else {

						IssueActions.edit(
										getContext(),
										comment.getText().toString(),
										arguments.getInt("commentId"),
										issue)
								.accept(
										(status, result) -> {
											FragmentActivity activity = requireActivity();
											if (activity instanceof IssueDetailActivity) {
												((IssueDetailActivity) activity).commentEdited =
														true;
											}

											if (status == ActionResult.Status.SUCCESS) {

												if (draftId != 0
														&& Boolean.parseBoolean(
																AppDatabaseSettings
																		.getSettingsValue(
																				getContext(),
																				AppDatabaseSettings
																						.APP_DRAFTS_DELETION_KEY))) {
													draftsApi.deleteSingleDraft((int) draftId);
												}

												if (onInteractedListener != null) {
													onInteractedListener.run();
												}
											} else {

												Toasty.error(
														getContext(),
														getString(R.string.genericError));
											}

											dismiss();
										});
					}
				});

		return bottomSheetReplyLayoutBinding.getRoot();
	}

	private void saveDraft(String text, boolean remove) {

		ValueAnimator valueAnimator = ValueAnimator.ofFloat(0f, 1f);
		valueAnimator.setDuration(500);
		valueAnimator.addUpdateListener(
				animation -> {
					float value = (Float) animation.getAnimatedValue();

					if (value == 0f) {
						draftsHint.setVisibility((remove) ? View.GONE : View.VISIBLE);
					}

					draftsHint.setAlpha(value);
				});

		if (remove) {

			draftsApi.deleteSingleDraft((int) draftId);
			draftId = 0;

			valueAnimator.reverse();
		} else {

			String draftType;
			if (issue.getIssueType().equalsIgnoreCase("Issue")) {

				draftType = Constants.draftTypeIssue;
			} else if (issue.getIssueType().equalsIgnoreCase("Pull")) {

				draftType = Constants.draftTypePull;
			} else {

				draftType = "";
			}

			if (draftId == 0) {

				draftId =
						draftsApi.insertDraft(
								issue.getRepository().saveToDB(requireContext()),
								currentActiveAccountId,
								issue.getIssueIndex(),
								text,
								draftType,
								"TODO",
								issue.getIssueType());
			} else {

				draftsApi.updateDraft(text, (int) draftId, "TODO");
			}

			draftsHint.setVisibility(View.VISIBLE);
			// valueAnimator.start();
		}
	}

	public void setOnInteractedListener(Runnable onInteractedListener) {

		this.onInteractedListener = onInteractedListener;
	}

	private enum Mode {
		EDIT,
		SEND
	}
}