package eu.siacs.conversations.ui.adapter;

import android.app.PendingIntent;
import android.content.IntentSender;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.databinding.DataBindingUtil;
import androidx.recyclerview.widget.DiffUtil;
import androidx.recyclerview.widget.ListAdapter;
import androidx.recyclerview.widget.RecyclerView;
import com.google.common.base.Strings;
import eu.siacs.conversations.R;
import eu.siacs.conversations.crypto.PgpEngine;
import eu.siacs.conversations.databinding.ItemContactBinding;
import eu.siacs.conversations.entities.Contact;
import eu.siacs.conversations.entities.MucOptions;
import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.ui.ConferenceDetailsActivity;
import eu.siacs.conversations.ui.XmppActivity;
import eu.siacs.conversations.ui.util.AvatarWorkerTask;
import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
import eu.siacs.conversations.utils.Compatibility;
import eu.siacs.conversations.xmpp.Jid;
import im.conversations.android.xmpp.model.muc.Role;
import org.openintents.openpgp.util.OpenPgpUtils;

public class UserAdapter extends ListAdapter<MucOptions.User, UserAdapter.ViewHolder>
        implements View.OnCreateContextMenuListener {

    static final DiffUtil.ItemCallback<MucOptions.User> DIFF =
            new DiffUtil.ItemCallback<MucOptions.User>() {
                @Override
                public boolean areItemsTheSame(
                        @NonNull MucOptions.User a, @NonNull MucOptions.User b) {
                    final Jid fullA = a.getFullJid();
                    final Jid fullB = b.getFullJid();
                    final Jid realA = a.getRealJid();
                    final Jid realB = b.getRealJid();
                    if (fullA != null && fullB != null) {
                        return fullA.equals(fullB);
                    } else if (realA != null && realB != null) {
                        return realA.equals(realB);
                    } else {
                        return false;
                    }
                }

                @Override
                public boolean areContentsTheSame(
                        @NonNull MucOptions.User a, @NonNull MucOptions.User b) {
                    return a.equals(b);
                }
            };
    private final boolean advancedMode;
    private MucOptions.User selectedUser = null;

    public UserAdapter(final boolean advancedMode) {
        super(DIFF);
        this.advancedMode = advancedMode;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int position) {
        return new ViewHolder(
                DataBindingUtil.inflate(
                        LayoutInflater.from(viewGroup.getContext()),
                        R.layout.item_contact,
                        viewGroup,
                        false));
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
        final MucOptions.User user = getItem(position);
        AvatarWorkerTask.loadAvatar(user, viewHolder.binding.contactPhoto, R.dimen.avatar);
        viewHolder
                .binding
                .getRoot()
                .setOnClickListener(
                        v -> {
                            final XmppActivity activity = XmppActivity.find(v);
                            if (activity == null) {
                                return;
                            }
                            final var contact = user.getContact();
                            if (user.getRole() == Role.NONE && contact != null) {
                                Toast.makeText(
                                                activity,
                                                activity.getString(
                                                        R.string.user_has_left_conference,
                                                        contact.getDisplayName()),
                                                Toast.LENGTH_SHORT)
                                        .show();
                            }
                            activity.highlightInMuc(user.getConversation(), user.getName());
                        });
        viewHolder.binding.getRoot().setTag(user);
        viewHolder.binding.getRoot().setOnCreateContextMenuListener(this);
        viewHolder
                .binding
                .getRoot()
                .setOnLongClickListener(
                        v -> {
                            selectedUser = user;
                            return false;
                        });
        final String name = user.getName();
        final Contact contact = user.getContact();
        if (contact != null) {
            final String displayName = contact.getDisplayName();
            viewHolder.binding.contactDisplayName.setText(displayName);
            if (name != null && !name.equals(displayName)) {
                viewHolder.binding.contactJid.setText(
                        String.format(
                                "%s \u2022 %s",
                                name,
                                ConferenceDetailsActivity.getStatus(
                                        viewHolder.binding.getRoot().getContext(),
                                        user,
                                        advancedMode)));
            } else {
                viewHolder.binding.contactJid.setText(
                        ConferenceDetailsActivity.getStatus(
                                viewHolder.binding.getRoot().getContext(), user, advancedMode));
            }
        } else {
            viewHolder.binding.contactDisplayName.setText(Strings.nullToEmpty(name));
            viewHolder.binding.contactJid.setText(
                    ConferenceDetailsActivity.getStatus(
                            viewHolder.binding.getRoot().getContext(), user, advancedMode));
        }
        if (advancedMode && user.getPgpKeyId() != 0) {
            viewHolder.binding.key.setVisibility(View.VISIBLE);
            viewHolder.binding.key.setOnClickListener(
                    v -> {
                        final XmppActivity activity = XmppActivity.find(v);
                        final XmppConnectionService service =
                                activity == null ? null : activity.xmppConnectionService;
                        final PgpEngine pgpEngine = service == null ? null : service.getPgpEngine();
                        if (pgpEngine != null) {
                            PendingIntent intent = pgpEngine.getIntentForKey(user.getPgpKeyId());
                            if (intent != null) {
                                try {
                                    activity.startIntentSenderForResult(
                                            intent.getIntentSender(),
                                            0,
                                            null,
                                            0,
                                            0,
                                            0,
                                            Compatibility.pgpStartIntentSenderOptions());
                                } catch (IntentSender.SendIntentException ignored) {

                                }
                            }
                        }
                    });
            viewHolder.binding.key.setText(OpenPgpUtils.convertKeyIdToHex(user.getPgpKeyId()));
        } else {
            viewHolder.binding.key.setVisibility(View.GONE);
        }
    }

    public MucOptions.User getSelectedUser() {
        return selectedUser;
    }

    @Override
    public void onCreateContextMenu(
            ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        MucDetailsContextMenuHelper.onCreateContextMenu(menu, v);
    }

    static class ViewHolder extends RecyclerView.ViewHolder {

        private final ItemContactBinding binding;

        private ViewHolder(ItemContactBinding binding) {
            super(binding.getRoot());
            this.binding = binding;
        }
    }
}