import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:seshat/domain/models/book_instance.dart';
import 'package:seshat/routing/routes.dart';
import 'package:seshat/ui/core/ui/navigation_bar.dart';
import 'package:seshat/ui/sell_page/view_model/sell_view_model.dart';
import 'package:seshat/ui/sell_page/widgets/scan_screen.dart';
import 'package:seshat/ui/core/ui/await_loading.dart';

class SellPage extends StatefulWidget {
  const SellPage({super.key, required this.viewModel});

  final SellViewModel viewModel;

  @override
  State<SellPage> createState() => _SellPageState();
}

class _SellPageState extends State<SellPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      bottomNavigationBar: AppNavigationBar(startIndex: 2),
      body: ListenableBuilder(
        listenable: widget.viewModel,
        builder: (context, child) {
          return switch (widget.viewModel.isLoaded) {
            false => AwaitLoading(),
            true => switch (widget.viewModel.currentBal) {
              null => Center(
                child: SizedBox(
                  width: 300,
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      Text(
                        "Aucune bal n'est active.",
                        style: TextStyle(fontSize: 25),
                        textAlign: TextAlign.center,
                      ),
                      SizedBox(height: 15),
                      Text(
                        "Vous devez créer puis activer une BAL pour pouvoir scanner des livres.",
                        textAlign: TextAlign.center,
                      ),
                      SizedBox(height: 30),
                      ElevatedButton(
                        onPressed: () {
                          context.go(Routes.home);
                        },
                        child: Text("Gérer les BALs"),
                      ),
                    ],
                  ),
                ),
              ),
              _ => Stack(
                children: [
                  SafeArea(
                    child: Column(
                      mainAxisSize: MainAxisSize.min,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: [
                        Center(
                          child: Text(
                            "Livres dans la vente actuelle",
                            style: TextStyle(fontSize: 20),
                          ),
                        ),
                        SizedBox(height: 15),
                        Expanded(
                          child: ListView(
                            children: [
                              (widget.viewModel.scannedBooks.isEmpty)
                                  ? Center(child: Text("Aucun"))
                                  : SizedBox(),
                              for (BookInstance bookInstance
                                  in widget.viewModel.scannedBooks)
                                Padding(
                                  padding: const EdgeInsets.symmetric(
                                    horizontal: 15,
                                  ),
                                  child: Card(
                                    child: ListTile(
                                      leading: Text(
                                        "${bookInstance.price.toString()}€",
                                        style: TextStyle(fontSize: 30),
                                      ),
                                      title: Text(
                                        "Les chiens et la charrue · Patrick K. Dewdney ${bookInstance.id}",
                                      ),
                                      subtitle: Text(
                                        "Union Étudiante Auvergne",
                                      ),
                                      trailing: IconButton(
                                        onPressed: () {
                                          widget.viewModel.deleteBook(
                                            bookInstance.id,
                                          );
                                        },
                                        icon: Icon(Icons.delete),
                                      ),
                                    ),
                                  ),
                                ),
                            ],
                          ),
                        ),
                        SizedBox(height: 40),
                        Text("Montant minimum à payer : 20€"),
                        Padding(
                          padding: const EdgeInsets.symmetric(horizontal: 60.0),
                          child: SizedBox(
                            child: TextField(
                              decoration: InputDecoration(
                                labelText: "Argent reçu",
                                helperText:
                                    "L'argent reçu sera réparti automatiquement",
                                suffixText: "€",
                                border: OutlineInputBorder(),
                              ),
                              keyboardType: TextInputType.number,
                            ),
                          ),
                        ),
                        SizedBox(height: 10),
                        Row(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            IconButton(
                              onPressed: () {
                                widget.viewModel.sendSell();
                              },
                              icon: Icon(Icons.check),
                              style: ButtonStyle(
                                iconSize: WidgetStatePropertyAll(70),
                              ),
                            ),
                            SizedBox(width: 70),
                            IconButton(
                              onPressed: () {
                                widget.viewModel.showScan = true;
                              },
                              icon: Icon(Icons.add),
                              style: ButtonStyle(
                                iconSize: WidgetStatePropertyAll(70),
                                elevation: WidgetStatePropertyAll(50),
                              ),
                            ),
                          ],
                        ),
                        SizedBox(height: 5),
                      ],
                    ),
                  ),

                  (widget.viewModel.showScan)
                      ? ScanScreen(viewModel: widget.viewModel)
                      : SizedBox(),
                ],
              ),
            },
          };
        },
      ),
    );
    // return Center(child: Text("Sell page."));
  }
}