/* Copyright 2017 Thomas Schneider
 *
 * This file is a part of Fedilab
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with Fedilab; if not,
 * see <http://www.gnu.org/licenses>. */
package app.fedilab.android.activities;


import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.InputFilter;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.widget.Toolbar;
import androidx.core.content.ContextCompat;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.List;

import app.fedilab.android.R;
import app.fedilab.android.asynctasks.ManageListsAsyncTask;
import app.fedilab.android.asynctasks.RetrieveFeedsAsyncTask;
import app.fedilab.android.client.APIResponse;
import app.fedilab.android.client.Entities.Status;
import app.fedilab.android.client.Entities.StatusDrawerParams;
import app.fedilab.android.drawers.StatusListAdapter;
import app.fedilab.android.helper.Helper;
import app.fedilab.android.interfaces.OnListActionInterface;
import es.dmoral.toasty.Toasty;


/**
 * Created by Thomas on 14/12/2017.
 * Display content of a list, also help to manage it
 */

public class ListActivity extends BaseActivity implements OnListActionInterface {


    LinearLayoutManager mLayoutManager;
    private String title, listId;
    private RelativeLayout mainLoader, nextElementLoader, textviewNoAction;
    private SwipeRefreshLayout swipeRefreshLayout;
    private boolean swiped;
    private List<Status> statuses;
    private String max_id;
    private boolean firstLoad;
    private boolean flag_loading;
    private StatusListAdapter statusListAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        SharedPreferences sharedpreferences = getSharedPreferences(Helper.APP_PREFS, MODE_PRIVATE);
        int theme = sharedpreferences.getInt(Helper.SET_THEME, Helper.THEME_DARK);
        switch (theme) {
            case Helper.THEME_LIGHT:
                setTheme(R.style.AppTheme_NoActionBar_Fedilab);
                break;
            case Helper.THEME_BLACK:
                setTheme(R.style.AppThemeBlack_NoActionBar);
                break;
            default:
                setTheme(R.style.AppThemeDark_NoActionBar);
        }
        setContentView(R.layout.activity_list);
        Toolbar toolbar = findViewById(R.id.toolbar);
        toolbar.setBackgroundColor(ContextCompat.getColor(ListActivity.this, R.color.cyanea_primary));
        setSupportActionBar(toolbar);
        if (getSupportActionBar() != null)
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        statuses = new ArrayList<>();

        RecyclerView lv_status = findViewById(R.id.lv_status);
        mainLoader = findViewById(R.id.loader);
        nextElementLoader = findViewById(R.id.loading_next_status);
        textviewNoAction = findViewById(R.id.no_action);
        mainLoader.setVisibility(View.VISIBLE);
        swipeRefreshLayout = findViewById(R.id.swipeContainer);
        int c1 = getResources().getColor(R.color.cyanea_accent);
        int c2 = getResources().getColor(R.color.cyanea_primary_dark);
        int c3 = getResources().getColor(R.color.cyanea_primary);
        swipeRefreshLayout.setProgressBackgroundColorSchemeColor(c3);
        swipeRefreshLayout.setColorSchemeColors(
                c1, c2, c1
        );
        max_id = null;
        flag_loading = true;
        firstLoad = true;
        swiped = false;


        mainLoader.setVisibility(View.VISIBLE);
        nextElementLoader.setVisibility(View.GONE);
        boolean isOnWifi = Helper.isOnWIFI(ListActivity.this);
        StatusDrawerParams statusDrawerParams = new StatusDrawerParams();
        statusDrawerParams.setType(RetrieveFeedsAsyncTask.Type.LIST);
        statusDrawerParams.setTargetedId(null);
        statusDrawerParams.setOnWifi(isOnWifi);
        statusDrawerParams.setStatuses(this.statuses);
        statusListAdapter = new StatusListAdapter(statusDrawerParams);

        lv_status.setAdapter(statusListAdapter);
        mLayoutManager = new LinearLayoutManager(ListActivity.this);
        lv_status.setLayoutManager(mLayoutManager);

        Bundle b = getIntent().getExtras();
        if (b != null) {
            title = b.getString("title");
            listId = b.getString("id");
        } else {
            Toasty.error(ListActivity.this, getString(R.string.toast_error_search), Toast.LENGTH_LONG).show();
        }
        if (getSupportActionBar() != null)
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        setTitle(title);


        lv_status.addOnScrollListener(new RecyclerView.OnScrollListener() {
            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
                int firstVisibleItem = mLayoutManager.findFirstVisibleItemPosition();
                if (dy > 0) {
                    int visibleItemCount = mLayoutManager.getChildCount();
                    int totalItemCount = mLayoutManager.getItemCount();
                    if (firstVisibleItem + visibleItemCount == totalItemCount) {
                        if (!flag_loading) {
                            flag_loading = true;
                            new ManageListsAsyncTask(ListActivity.this, listId, max_id, null, ListActivity.this);
                            nextElementLoader.setVisibility(View.VISIBLE);
                        }
                    } else {
                        nextElementLoader.setVisibility(View.GONE);
                    }
                }
            }
        });


        swipeRefreshLayout.setOnRefreshListener(() -> {
            max_id = null;
            firstLoad = true;
            flag_loading = true;
            swiped = true;
            MainActivity.countNewStatus = 0;
            new ManageListsAsyncTask(ListActivity.this, listId, null, null, ListActivity.this);
        });

        new ManageListsAsyncTask(ListActivity.this, listId, null, null, ListActivity.this);
    }


    @Override
    public boolean onCreateOptionsMenu(@NotNull Menu menu) {
        getMenuInflater().inflate(R.menu.main_list, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                finish();
                return true;
            case R.id.action_add_user:
                Intent intent = new Intent(ListActivity.this, ManageAccountsInListActivity.class);
                intent.putExtra("title", title);
                intent.putExtra("id", listId);
                startActivity(intent);
                return true;
            case R.id.action_edit_list:
                int style;
                SharedPreferences sharedpreferences = getSharedPreferences(Helper.APP_PREFS, MODE_PRIVATE);
                int theme = sharedpreferences.getInt(Helper.SET_THEME, Helper.THEME_DARK);
                if (theme == Helper.THEME_DARK) {
                    style = R.style.DialogDark;
                } else if (theme == Helper.THEME_BLACK) {
                    style = R.style.DialogBlack;
                } else {
                    style = R.style.Dialog;
                }
                AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(ListActivity.this, style);
                LayoutInflater inflater = getLayoutInflater();
                View dialogView = inflater.inflate(R.layout.add_list, new LinearLayout(ListActivity.this), false);
                dialogBuilder.setView(dialogView);
                final EditText editText = dialogView.findViewById(R.id.add_list);
                editText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(255)});
                editText.setText(title);
                dialogBuilder.setPositiveButton(R.string.validate, (dialog, id) -> {
                    if (editText.getText() != null && editText.getText().toString().trim().length() > 0)
                        new ManageListsAsyncTask(ListActivity.this, ManageListsAsyncTask.action.UPDATE_LIST, null, listId, editText.getText().toString().trim(), ListActivity.this);
                    dialog.dismiss();
                });
                dialogBuilder.setNegativeButton(R.string.cancel, (dialog, id) -> dialog.dismiss());


                AlertDialog alertDialog = dialogBuilder.create();
                alertDialog.setTitle(getString(R.string.action_lists_create));
                alertDialog.setOnDismissListener(dialogInterface -> {
                    //Hide keyboard
                    InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
                    assert imm != null;
                    imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
                });
                if (alertDialog.getWindow() != null)
                    alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
                alertDialog.show();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }


    @Override
    public void onActionDone(ManageListsAsyncTask.action actionType, APIResponse apiResponse, int statusCode) {
        mainLoader.setVisibility(View.GONE);
        nextElementLoader.setVisibility(View.GONE);
        //Discards 404 - error which can often happen due to toots which have been deleted
        if (apiResponse.getError() != null) {
            if (!apiResponse.getError().getError().startsWith("404 -") && !apiResponse.getError().getError().startsWith("501 -"))
                Toasty.error(ListActivity.this, apiResponse.getError().getError(), Toast.LENGTH_LONG).show();
            swipeRefreshLayout.setRefreshing(false);
            swiped = false;
            flag_loading = false;
            return;
        }
        if (actionType == ManageListsAsyncTask.action.GET_LIST_TIMELINE) {

            int previousPosition = this.statuses.size();
            List<Status> statuses = apiResponse.getStatuses();
            max_id = apiResponse.getMax_id();
            flag_loading = (max_id == null);
            if (!swiped && firstLoad && (statuses == null || statuses.size() == 0))
                textviewNoAction.setVisibility(View.VISIBLE);
            else
                textviewNoAction.setVisibility(View.GONE);

            if (swiped) {
                if (previousPosition > 0) {
                    this.statuses.subList(0, previousPosition).clear();
                    statusListAdapter.notifyItemRangeRemoved(0, previousPosition);
                }
                swiped = false;
            }
            if (statuses != null && statuses.size() > 0) {
                this.statuses.addAll(statuses);
                statusListAdapter.notifyItemRangeInserted(previousPosition, statuses.size());
            }
            swipeRefreshLayout.setRefreshing(false);
            firstLoad = false;
        } else if (actionType == ManageListsAsyncTask.action.UPDATE_LIST) {
            Intent intentUP = new Intent(Helper.RECEIVE_UPDATE_TOPBAR);
            LocalBroadcastManager.getInstance(ListActivity.this).sendBroadcast(intentUP);
        }
    }
}