package de.pixart.messenger.ui;

import android.app.PendingIntent;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.StringRes;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnLongClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.soundcloud.android.crop.Crop;

import java.io.File;

import de.pixart.messenger.Config;
import de.pixart.messenger.R;
import de.pixart.messenger.entities.Account;
import de.pixart.messenger.persistance.FileBackend;
import de.pixart.messenger.services.XmppConnectionService;
import de.pixart.messenger.utils.FileUtils;
import de.pixart.messenger.utils.PhoneHelper;
import de.pixart.messenger.xmpp.pep.Avatar;

public class PublishProfilePictureActivity extends XmppActivity implements XmppConnectionService.OnAccountUpdate {

    private static final int REQUEST_CHOOSE_FILE_AND_CROP = 0xac23;
    private static final int REQUEST_CHOOSE_FILE = 0xac24;
    private ImageView avatar;
    private TextView accountTextView;
    private TextView hintOrWarning;
    private TextView secondaryHint;
    private Button cancelButton;
    private Button publishButton;
    private Uri avatarUri;
    private Uri defaultUri;
    private Account account;
    private boolean support = false;
    private boolean publishing = false;
    private OnLongClickListener backToDefaultListener = new OnLongClickListener() {

        @Override
        public boolean onLongClick(View v) {
            avatarUri = defaultUri;
            loadImageIntoPreview(defaultUri);
            return true;
        }
    };
    private boolean mInitialAccountSetup;
    private UiCallback<Avatar> avatarPublication = new UiCallback<Avatar>() {

        @Override
        public void success(Avatar object) {
            runOnUiThread(() -> {
                if (mInitialAccountSetup) {
                    Intent intent = new Intent(getApplicationContext(), StartConversationActivity.class);
                    WelcomeActivity.addInviteUri(intent, getIntent());
                    intent.putExtra("init", true);
                    startActivity(intent);
                    overridePendingTransition(R.animator.fade_in, R.animator.fade_out);
                }
                Toast.makeText(PublishProfilePictureActivity.this,
                        R.string.avatar_has_been_published,
                        Toast.LENGTH_SHORT).show();
                finish();
            });
        }

        @Override
        public void error(final int errorCode, Avatar object) {
            runOnUiThread(() -> {
                hintOrWarning.setText(errorCode);
                hintOrWarning.setTextColor(getWarningTextColor());
                hintOrWarning.setVisibility(View.VISIBLE);
                publishing = false;
                togglePublishButton(true,R.string.publish);
            });

        }

        @Override
        public void userInputRequried(PendingIntent pi, Avatar object) {
        }
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_publish_profile_picture);
        setSupportActionBar(findViewById(R.id.toolbar));
        configureActionBar(getSupportActionBar());
        this.avatar = findViewById(R.id.account_image);
        this.cancelButton = findViewById(R.id.cancel_button);
        this.publishButton = findViewById(R.id.publish_button);
        this.hintOrWarning = findViewById(R.id.hint_or_warning);
        this.secondaryHint = findViewById(R.id.secondary_hint);
        this.publishButton.setOnClickListener(v -> {
            if (avatarUri != null) {
                publishing = true;
                togglePublishButton(false,R.string.publishing);
                xmppConnectionService.publishAvatar(account, avatarUri, avatarPublication);
            }
        });
        this.cancelButton.setOnClickListener(v -> {
            if (mInitialAccountSetup) {
                Intent intent = new Intent(getApplicationContext(), StartConversationActivity.class);
                if (xmppConnectionService != null && xmppConnectionService.getAccounts().size() == 1) {
                    WelcomeActivity.addInviteUri(intent, getIntent());
                    intent.putExtra("init", true);
                }
                startActivity(intent);
                overridePendingTransition(R.animator.fade_in, R.animator.fade_out);
            }
            finish();
        });
        this.avatar.setOnClickListener(v -> {
            if (hasStoragePermission(REQUEST_CHOOSE_FILE)) {
                chooseAvatar(false);
            }
        });
        this.defaultUri = PhoneHelper.getProfilePictureUri(getApplicationContext());
    }

    private void chooseAvatar(boolean crop) {
        Intent attachFileIntent = new Intent();
        attachFileIntent.setType("image/*");
        attachFileIntent.setAction(Intent.ACTION_GET_CONTENT);
        Intent chooser = Intent.createChooser(attachFileIntent, getString(R.string.attach_file));
        startActivityForResult(chooser, crop ? REQUEST_CHOOSE_FILE_AND_CROP : REQUEST_CHOOSE_FILE);
        overridePendingTransition(R.animator.fade_in, R.animator.fade_out);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
        if (grantResults.length > 0)
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                if (requestCode == REQUEST_CHOOSE_FILE_AND_CROP) {
                    chooseAvatar(true);
                } else if (requestCode == REQUEST_CHOOSE_FILE) {
                    chooseAvatar(false);
                }
            } else {
                Toast.makeText(this, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
            }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.publish_avatar, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(final MenuItem item) {
        if (item.getItemId() == R.id.action_crop_image) {
            if (hasStoragePermission(REQUEST_CHOOSE_FILE_AND_CROP)) {
                chooseAvatar(true);
            }
            return true;
        } else {
            return super.onOptionsItemSelected(item);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            Uri source = data.getData();
            switch (requestCode) {
                case REQUEST_CHOOSE_FILE_AND_CROP:
                    if (FileBackend.weOwnFile(this, source)) {
                        Toast.makeText(this, R.string.security_error_invalid_file_access, Toast.LENGTH_SHORT).show();
                        return;
                    }
                    String original = FileUtils.getPath(this, source);
                    if (original != null) {
                        source = Uri.parse("file://" + original);
                    }
                    Uri destination = Uri.fromFile(new File(getCacheDir(), "croppedAvatar"));
                    final int size = getPixel(Config.AVATAR_SIZE);
                    Crop.of(source, destination).asSquare().withMaxSize(size, size).start(this);
                    break;
                case REQUEST_CHOOSE_FILE:
                    if (FileBackend.weOwnFile(this, source)) {
                        Toast.makeText(this, R.string.security_error_invalid_file_access, Toast.LENGTH_SHORT).show();
                        return;
                    }
                    this.avatarUri = source;
                    if (xmppConnectionServiceBound) {
                        loadImageIntoPreview(this.avatarUri);
                    }
                    break;
                case Crop.REQUEST_CROP:
                    this.avatarUri = Uri.fromFile(new File(getCacheDir(), "croppedAvatar"));
                    if (xmppConnectionServiceBound) {
                        loadImageIntoPreview(this.avatarUri);
                    }
                    break;
            }
        } else {
            if (requestCode == Crop.REQUEST_CROP && data != null) {
                Throwable throwable = Crop.getError(data);
                if (throwable != null && throwable instanceof OutOfMemoryError) {
                    Toast.makeText(this, R.string.selection_too_large, Toast.LENGTH_SHORT).show();
                }
            }
        }
    }

    @Override
    protected void onBackendConnected() {
        this.account = extractAccount(getIntent());
        if (this.account != null) {
            reloadAvatar();
        }
    }

    private void reloadAvatar() {
        this.support = this.account.getXmppConnection() != null && this.account.getXmppConnection().getFeatures().pep();
        if (this.avatarUri == null) {
            if (this.account.getAvatar() != null || this.defaultUri == null) {
                loadImageIntoPreview(null);
            } else {
                this.avatarUri = this.defaultUri;
                loadImageIntoPreview(this.defaultUri);
            }
        } else {
            loadImageIntoPreview(avatarUri);
        }
    }

    @Override
    protected void onStart() {
        super.onStart();
        if (getIntent() != null) {
            this.mInitialAccountSetup = getIntent().getBooleanExtra("setup", false);
        }
        if (this.mInitialAccountSetup) {
            this.cancelButton.setText(R.string.skip);
        }
    }

    protected void loadImageIntoPreview(Uri uri) {
        Bitmap bm = null;
        if (uri == null) {
            bm = avatarService().get(account, getPixel(Config.AVATAR_SIZE));
        } else {
            try {
                bm = xmppConnectionService.getFileBackend().cropCenterSquare(uri, getPixel(Config.AVATAR_SIZE));
            } catch (Exception e) {
                Log.d(Config.LOGTAG, "unable to load bitmap into image view", e);
            }
        }

        if (bm == null) {
            togglePublishButton(false, R.string.publish);
            this.hintOrWarning.setVisibility(View.VISIBLE);
            this.hintOrWarning.setTextColor(getWarningTextColor());
            this.hintOrWarning.setText(R.string.error_publish_avatar_converting);
            return;
        }
        this.avatar.setImageBitmap(bm);
        if (support) {
            togglePublishButton(uri != null, R.string.publish);
            this.hintOrWarning.setVisibility(View.INVISIBLE);
        } else {
            togglePublishButton(false, R.string.publish);
            this.hintOrWarning.setVisibility(View.VISIBLE);
            this.hintOrWarning.setTextColor(getWarningTextColor());
            if (account.getStatus() == Account.State.ONLINE) {
                this.hintOrWarning.setText(R.string.error_publish_avatar_no_server_support);
            } else {
                this.hintOrWarning.setText(R.string.error_publish_avatar_offline);
            }
        }
        if (this.defaultUri == null || this.defaultUri.equals(uri)) {
            this.secondaryHint.setVisibility(View.INVISIBLE);
            this.avatar.setOnLongClickListener(null);
        } else if (this.defaultUri != null) {
            this.secondaryHint.setVisibility(View.VISIBLE);
            this.avatar.setOnLongClickListener(this.backToDefaultListener);
        }
    }

    protected void togglePublishButton(boolean enabled, @StringRes int res) {
        final boolean status = enabled && !publishing;
        this.publishButton.setText(publishing ? R.string.publishing : res);
        this.publishButton.setEnabled(status);
    }

    public void refreshUiReal() {
        if (this.account != null) {
            reloadAvatar();
        }
    }

    @Override
    public void onAccountUpdate() {
        refreshUi();
    }
}