import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'package:physigo/database.dart';
import '../models/user.dart';

class MyDataTable extends StatefulWidget {
  const MyDataTable({Key? key}) : super(key: key);

  @override
  State<MyDataTable> createState() => _MyDataTableState();
}

class _MyDataTableState extends State<MyDataTable> {


  @override
  Widget build(BuildContext context) {

    return  Scaffold(
    body: Center(
      child: StreamBuilder<dynamic>(
        stream: DatabaseManager().getUsersList(),
        builder: (context, snapshot) {
          if(snapshot.connectionState == ConnectionState.waiting){
            return const Text('Wait a moment');
          }
          else if(snapshot.hasData) {
            return buildDataTable(snapshot.data);
          }
          return const Text("Something went wrong");
          },
    ),
    ),
    );
  }
  @override
  void initState() {
    super.initState();
  }

  // fetchUsers() async{
  //     dynamic users = await DatabaseManager().getUsersList();
  //
  //     if(users == null){
  //       print("Wrong");
  //     }
  //     else{
  //       setState(() {
  //         userList = users;
  //       });
  //     }
  }

  Widget buildDataTable(snapshotData) {
    final columns = ['ID', 'Name', 'points'];

    return DataTable(
      columns: getColumns(columns),
      rows: getRows(snapshotData),
    );
  }
  // Columns of ranking
  List<DataColumn> getColumns(List<String> columns) {
    return columns.map((String column) {
      return DataColumn(
        label: Text(column),
      );
    }).toList();
  }

  //Rows of ranking(id, name, total_points)
  List<DataRow> getRows(dynamic snapshotData) {
    List<DataRow> rows = [];

    snapshotData.forEach((user) {
        rows.add(
            DataRow(
                cells: [
                  DataCell(
                    Text("${user["shared_id"]}"),
                  ),
                  DataCell(
                    Text(user["name"],)
                  ),
                  DataCell(
                    Text("${user["total_points"]}"),
                  ),
                ]
            )
        );
      });
    return rows;
  }