package com.robertoc.test;

import android.content.Context;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;

import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.Query;
import com.google.firebase.database.ValueEventListener;
import com.squareup.picasso.Callback;
import com.squareup.picasso.NetworkPolicy;
import com.squareup.picasso.Picasso;

public class MainActivity extends AppCompatActivity {

    private RecyclerView mLista_Blog;
    private DatabaseReference mDatabase;
    private FirebaseAuth mAuth;
    private FirebaseAuth.AuthStateListener mAuthListener;
    private DatabaseReference mDatabaseUsuarios;
    private boolean mProcessLike = false;
    private DatabaseReference mDatabaseLike;
    private DatabaseReference mDatabaseCurrentUSer;
    private Query mQueryCurrentUser;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mAuth = FirebaseAuth.getInstance();
        mAuthListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                if (firebaseAuth.getCurrentUser() == null){

                    Intent loginIntent = new Intent(MainActivity.this, Entrar.class);
                    loginIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(loginIntent);
                }
        }};


        mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
        mDatabaseUsuarios = FirebaseDatabase.getInstance().getReference().child("Usuarios");
        mDatabaseLike = FirebaseDatabase.getInstance().getReference().child("Likes");

        String currentUserId = mAuth.getCurrentUser().getUid();

        mDatabaseCurrentUSer = FirebaseDatabase.getInstance().getReference().child("Blog");

        mQueryCurrentUser = mDatabaseCurrentUSer.orderByChild("uid").equalTo(currentUserId);

        mDatabase.keepSynced(true);
        mDatabaseLike.keepSynced(true);
        mDatabaseUsuarios.keepSynced(true);


        mLista_Blog = (RecyclerView) findViewById(R.id.lista_blog);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        layoutManager.setReverseLayout(true);
        layoutManager.setStackFromEnd(true);

        mLista_Blog.setHasFixedSize(true);
        mLista_Blog.setLayoutManager(new LinearLayoutManager(this));




        checkUserExist();

    }

@Override
protected  void onStart(){
    super.onStart();

    mAuth.addAuthStateListener(mAuthListener);

    FirebaseRecyclerAdapter<Blog, BlogViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Blog, BlogViewHolder>(
            Blog.class,
            R.layout.blog_row,
            BlogViewHolder.class,
            mQueryCurrentUser



    ) {
        @Override
        protected void populateViewHolder(BlogViewHolder viewHolder, Blog model,final int position) {

           final String  post_key = getRef(position).getKey();

            viewHolder.setTitulo(model.getTitulo());
            viewHolder.setConteudo(model.getConteudo());
            viewHolder.setImagem(getApplicationContext(),model.getImagem());
            viewHolder.setUsername(model.getUsername());
            viewHolder.setmLikeBtn(post_key);


            viewHolder.mView.setOnClickListener(new View.OnClickListener() {


                @Override
                public void onClick(View view) {
                    //Toast.makeText(MainActivity.this, post_key,  Toast.LENGTH_LONG).show();
                    Intent  singleBlogIntent = new  Intent(MainActivity.this, BlogSingleActivity.class);
                    singleBlogIntent.putExtra("blog_id", post_key );
                    startActivity(singleBlogIntent);

                }
            });

            viewHolder.mLikeBtn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {

                    mProcessLike = true;


                        mDatabaseLike.addValueEventListener(new ValueEventListener() {
                            @Override
                            public void onDataChange(DataSnapshot dataSnapshot) {

                                  if (mProcessLike ){

                                        if(dataSnapshot.child(post_key).hasChild(mAuth.getCurrentUser().getUid())){

                                            mDatabaseLike.child(post_key).child(mAuth.getCurrentUser().getUid()).removeValue();
                                            mProcessLike = false;
                                        } else {

                                             mDatabaseLike.child(post_key).child(mAuth.getCurrentUser().getUid()).setValue("RandomValue");
                                            mProcessLike = false;
                                        }

                            }}

                            @Override
                            public void onCancelled(DatabaseError databaseError) {

                            }
                        });

                    }
            });

        }
    };

    mLista_Blog.setAdapter(firebaseRecyclerAdapter);

}

    private void checkUserExist() {


        if(mAuth.getCurrentUser()!= null ){

        final String user_id = mAuth.getCurrentUser().getUid();

        mDatabaseUsuarios.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {


                if(!dataSnapshot.hasChild(user_id)) {

                    Intent mainIntent = new Intent(MainActivity.this, Entrar.class);
                    mainIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(mainIntent);



                }
            }


            @Override
            public void onCancelled(DatabaseError databaseError) {


            }});}}


    public  static class  BlogViewHolder extends  RecyclerView.ViewHolder{

        View mView;

        ImageButton mLikeBtn;

        DatabaseReference mDatabaseLike;
        FirebaseAuth mAuth;


        public BlogViewHolder(View itemView) {
            super(itemView);

            mView = itemView;

            mLikeBtn = (ImageButton) mView.findViewById(R.id.like_Btm);

            mDatabaseLike = FirebaseDatabase.getInstance().getReference().child("Likes");
            mAuth = FirebaseAuth.getInstance();

            mDatabaseLike.keepSynced(true);


        }
        public  void setmLikeBtn(final String post_key){

            mDatabaseLike.addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    if(dataSnapshot.child(post_key).hasChild(mAuth.getCurrentUser().getUid())){

                        mLikeBtn.setImageResource(R.drawable.ic_thumb_up_blacka_24dp);


                    } else {
                        mLikeBtn.setImageResource(R.drawable.ic_thumb_up_black_24dp);

                    }


                }

                @Override
                public void onCancelled(DatabaseError databaseError) {

                }
            });



        }




        public void setTitulo(String titulo){

            TextView post_titulo = (TextView) mView.findViewById(R.id.blogSingleTitle);
            post_titulo.setText(titulo);
        }

        public void setConteudo (String conteudo){

            TextView setConteudo = (TextView) mView.findViewById(R.id.post_conteudo);
            setConteudo.setText(conteudo);
        }

        private void setUsername(String username){

            TextView post_Username = (TextView) mView.findViewById(R.id.post_username);
            post_Username.setText(username);


        }

        public void setImagem(final Context ctx, final String imagem){

           final ImageView post_imagem = (ImageView) mView.findViewById(R.id.blogSingliImage);
            //Picasso.with(ctx).load(imagem).into(post_imagem);

                Picasso.with(ctx).load(imagem).networkPolicy(NetworkPolicy.OFFLINE).into(post_imagem, new Callback() {
                    @Override
                    public void onSuccess() {

                    }

                    @Override
                    public void onError() {

                        Picasso.with(ctx).load(imagem).into(post_imagem);
                    }
                });


        }

    }




    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.meu_menu, menu);
        return super.onCreateOptionsMenu(menu);



    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.barra_de_acao){

            startActivity(new Intent(MainActivity.this, Postar.class));


        }
        if (item.getItemId() == R.id.action_sair) {

            sair();

        }
        return super.onOptionsItemSelected(item);
    }


    private void sair() {

            mAuth.signOut();
        }
    }