package com.example.lifegrid;

import android.content.Context;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.example.lifegrid.utils.CustomToast;

import androidx.activity.EdgeToEdge;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.example.lifegrid.adapters.DocumentoAdapter;
import com.example.lifegrid.models.Documento;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
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.ValueEventListener;

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

public class DocumentosActivity extends AppCompatActivity {

    private ImageView btnBack;
    private RecyclerView rvDocumentos;
    private DocumentoAdapter adapter;
    private List<Documento> documentoList;
    private TextView tvEmptyState1, tvEmptyState2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_documentos);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });

        btnBack = findViewById(R.id.btnBack);
        btnBack.setOnClickListener(v -> finish());

        rvDocumentos = findViewById(R.id.rvDocumentos);
        tvEmptyState1 = findViewById(R.id.tvEmptyState1);
        tvEmptyState2 = findViewById(R.id.tvEmptyState2);

        rvDocumentos.setLayoutManager(new LinearLayoutManager(this));
        documentoList = new ArrayList<>();
        adapter = new DocumentoAdapter(documentoList, this);
        rvDocumentos.setAdapter(adapter);

        carregarDocumentos();
    }

    private void carregarDocumentos() {
        FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
        if (user == null) return;

        DatabaseReference ref = FirebaseDatabase.getInstance().getReference("users")
                .child(user.getUid()).child("documentos");

        ref.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot snapshot) {
                documentoList.clear();
                for (DataSnapshot ds : snapshot.getChildren()) {
                    Documento doc = ds.getValue(Documento.class);
                    if (doc != null) {
                        doc.setId(ds.getKey());
                        documentoList.add(doc);
                    }
                }
                adapter.notifyDataSetChanged();

                if (documentoList.isEmpty()) {
                    tvEmptyState1.setVisibility(View.VISIBLE);
                    tvEmptyState2.setVisibility(View.VISIBLE);
                    rvDocumentos.setVisibility(View.GONE);
                } else {
                    tvEmptyState1.setVisibility(View.GONE);
                    tvEmptyState2.setVisibility(View.GONE);
                    rvDocumentos.setVisibility(View.VISIBLE);
                }
            }

            @Override
            public void onCancelled(@NonNull DatabaseError error) {
                CustomToast.error(DocumentosActivity.this, "Erro ao carregar documentos.");
            }
        });
    }
}