package com.phoenixhospman.launcher1;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import static android.view.View.inflate;
import static java.util.Objects.requireNonNull;

/**
 * The main activity for the app.
 * @author Troy L. Marker
 * @version 1.0.0
 * @since 0.1.0
 */
public class ActivityHome extends Activity implements View.OnClickListener {
    private ManagerSecurityApi managerSecurityApi;
    final private static int REQUEST_CODE_1 = 1;
    private String strCoName;
    private String strApiUrl;
    private EditText etUsername;
    private EditText etPassword;
    private ObjectUser objectUser;

    /**
     * This method will create the activity, read content to display, and show the main activity screen
     * Used when the activity is (re)created.
     *
     * @param savedInstanceState current saved instance state
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN);
        setContentView(R.layout.activity_home);
        etUsername = findViewById(R.id.etUsername);
        etPassword = findViewById(R.id.etPassword);
        TextView tvWarning = findViewById(R.id.tvWarning);
        Button btnLogon = findViewById(R.id.btnLogon);
        btnLogon.setOnClickListener(this);
        @SuppressLint ("Recycle") Cursor cursor = getContentResolver().query(Uri.parse("content://com.phoenixhospman.installer.ProviderSettings/settings"), null, null, null, null, null);
        assert cursor != null;
        if(cursor.moveToFirst()) {
            while(!cursor.isAfterLast()) {
                strCoName = cursor.getString(cursor.getColumnIndex("coname"));
                strApiUrl = cursor.getString(cursor.getColumnIndex("apiurl"));
                cursor.moveToNext();
            }
            managerSecurityApi = new ManagerSecurityApi(strApiUrl);
            tvWarning.setText(getString(R.string.warning, rtrim(strCoName)));
        } else {
            Error("\nRequired setting missing.\nPlease (re)run Phoenix Install App");
        }

    }

    /**
     *
     * This method will read check the entered credentials for proper access
     *
     * @param view the view calling the method.
     */
    public void onClick(final View view) {
        if (view.getId() == R.id.btnLogon) {
            managerSecurityApi.login (etUsername.getText ().toString (), etPassword.getText ().toString (), new Callback<List<ObjectUser>> () {
                @Override
                public void onResponse (@NonNull Call<List<ObjectUser>> call, @NonNull Response<List<ObjectUser>> response) {
                    List<ObjectUser> JsonList = requireNonNull(response).body ();
                    for (int i = 0; i < requireNonNull (JsonList).size (); i++)
                        objectUser = new ObjectUser (
                            JsonList.get (i).getId (),
                            JsonList.get (i).getUsername (),
                            JsonList.get (i).getGrade (),
                            JsonList.get (i).getGradename(),
                            JsonList.get (i).getDepartment (),
                            JsonList.get (i).getDepartmentname()
                        );
                    getContentResolver ().delete (ProviderUser.CONTENT_URI, null, null);
                    etUsername.setText (R.string.blank);
                    etPassword.setText (R.string.blank);
                    ContentValues values = new ContentValues ();
                    values.put (ProviderUser.name, objectUser.getUsername ());
                    values.put (ProviderUser.grade, String.valueOf (objectUser.getGrade ()));
                    values.put (ProviderUser.gradename, objectUser.getGradename ());
                    values.put (ProviderUser.department, String.valueOf (objectUser.getDepartment ()));
                    values.put (ProviderUser.departmentname, objectUser.getDepartmentname());
                    getContentResolver ().insert (ProviderUser.CONTENT_URI, values);
                    showApps ();
                }
                @Override
                public void onFailure (@NonNull Call<List<ObjectUser>> call, @NonNull Throwable t) {
                    Toast.makeText (getApplicationContext (), t.getMessage (), Toast.LENGTH_SHORT).show ();
                }
            });
        } else {
            throw new IllegalStateException("Unexpected value: " + view.getId());
        }
    }

    /**
     * This method will call the App Display Activity
     */
    private void showApps(){
        Intent intent = new Intent(ActivityHome.this.getApplicationContext(), ActivityApp.class);
        intent.putExtra("username", objectUser.getUsername());
        intent.putExtra("grade", String.valueOf(objectUser.getGrade()));
        intent.putExtra("department", String.valueOf(objectUser.getDepartment()));
        startActivityForResult(intent, REQUEST_CODE_1);
    }

    /**
     * Override of the onBackPress method from the parent class
     * This disable th back button on the device.
     *
     */
    @Override
    public void onBackPressed() {
    }

    /**
     * The error display method
     *
     * This method displays a dialog box with an error message and a close button.
     *
     * @param strError the error message to display
     */
    @SuppressWarnings ("SameParameterValue")
    private void Error(String strError) {
        AlertDialog.Builder mBuilder = new AlertDialog.Builder(this);
        View view = inflate(this, R.layout.dialog_error, null);
        Button btnExit = view.findViewById(R.id.buttonExitButton);
        Button btnError = view.findViewById(R.id.btnErrorMessage);
        btnError.setText(getString(R.string.error, strError ));
        mBuilder.setView(view);
        AlertDialog dialog = mBuilder.create();
        dialog.setCanceledOnTouchOutside(false);
        dialog.setCancelable(false);
        dialog.show();
        btnExit.setOnClickListener(v -> finishAffinity());
    }

    /**
     * Function to trim whitespace from the end of a string.
     *
     * @param s the string to trim
     * @return the trimmed string
     */
    public static String rtrim(String s) {
        int i = s.length()-1;
        while (i >= 0 && Character.isWhitespace(s.charAt(i))) {
            i--;
        }
        return s.substring(0,i+1);
    }
}