import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:mobile_pos/Screens/warehouse/add_new_warehouse.dart';
import 'package:mobile_pos/Screens/warehouse/tab_item/transfer_list.dart';
import 'package:mobile_pos/Screens/warehouse/warehouse_model/warehouse_list_model.dart';
import 'package:mobile_pos/Screens/warehouse/warehouse_provider/warehouse_provider.dart';
import 'package:mobile_pos/Screens/warehouse/warehouse_repo/warehouse_repo.dart';
import 'package:mobile_pos/constant.dart';
import 'package:mobile_pos/currency.dart';

class WarehouseScreen extends ConsumerStatefulWidget {
  const WarehouseScreen({super.key});
  @override
  ConsumerState<WarehouseScreen> createState() => _WarehouseScreenState();
}

class _WarehouseScreenState extends ConsumerState<WarehouseScreen> {
  @override
  Widget build(BuildContext context) {
    final _theme = Theme.of(context);
    final warehouse = ref.watch(fetchWarehouseListProvider);
    return DefaultTabController(
      length: 2,
      child: Scaffold(
        backgroundColor: kWhite,
        appBar: AppBar(
          title: Text('Warehouse'),
          centerTitle: true,
          bottom: PreferredSize(
              preferredSize: Size.fromHeight(45),
              child: Column(
                children: [
                  Divider(
                    height: 2,
                    color: kBackgroundColor,
                  ),
                  Theme(
                    data: _theme.copyWith(
                      tabBarTheme: TabBarThemeData(dividerColor: kBackgroundColor),
                    ),
                    child: TabBar(
                        labelStyle: _theme.textTheme.titleMedium?.copyWith(
                          fontWeight: FontWeight.w500,
                        ),
                        labelColor: Colors.red,
                        unselectedLabelColor: kPeraColor,
                        indicatorSize: TabBarIndicatorSize.tab,
                        tabs: [
                          Tab(
                            text: 'Warehouse List',
                          ),
                          Tab(
                            text: 'Transfer List',
                          )
                        ]),
                  ),
                ],
              )),
        ),
        body: TabBarView(children: [
          warehouse.when(
            data: (snapshot) {
              return snapshot.data?.isNotEmpty ?? false
                  ? ListView.separated(
                      padding: EdgeInsets.zero,
                      itemBuilder: (_, index) {
                        final warehouseList = snapshot.data?[index];
                        return ListTile(
                          onTap: () {
                            showEditDeletePopUp(
                                context: context,
                                item: {
                                  "Name": warehouseList?.name?.toString() ?? 'n/a',
                                  "Phone": warehouseList?.phone?.toString() ?? 'n/a',
                                  "Email": warehouseList?.email?.toString() ?? 'n/a',
                                  "Address": warehouseList?.address?.toString() ?? 'n/a',
                                  // "Category": "120",
                                  "Stock Qty": warehouseList?.totalQuantity?.toString() ?? '0',
                                  "Stock Value": "$currency${warehouseList?.totalValue?.toString() ?? '0'}",
                                },
                                editData: warehouseList,
                                ref: ref);
                          },
                          visualDensity: VisualDensity(horizontal: -4, vertical: -4),
                          title: Padding(
                            padding: const EdgeInsets.only(bottom: 6),
                            child: Row(
                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
                              children: [
                                Text(
                                  warehouseList?.name?.toString() ?? '',
                                  style: _theme.textTheme.titleMedium?.copyWith(
                                    fontWeight: FontWeight.w500,
                                  ),
                                ),
                                Text(
                                  "$currency${warehouseList?.totalValue?.toString() ?? '0'}",
                                  style: _theme.textTheme.titleMedium?.copyWith(
                                    fontWeight: FontWeight.w500,
                                  ),
                                )
                              ],
                            ),
                          ),
                          subtitle: Row(
                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
                            children: [
                              Text(
                                warehouseList?.phone?.toString() ?? 'n/a',
                                style: _theme.textTheme.bodyMedium?.copyWith(
                                  color: kPeraColor,
                                ),
                                maxLines: 1,
                                overflow: TextOverflow.ellipsis,
                              ),
                              Text(
                                'Stock Value',
                                style: _theme.textTheme.bodyMedium?.copyWith(
                                  color: kPeraColor,
                                ),
                                maxLines: 1,
                                overflow: TextOverflow.ellipsis,
                              ),
                            ],
                          ),
                        );
                      },
                      separatorBuilder: (_, __) => Divider(
                            color: kBackgroundColor,
                            height: 2,
                          ),
                      itemCount: snapshot.data?.length ?? 0)
                  : emptyWidget(_theme);
            },
            error: (e, stack) => Center(child: Text(e.toString())),
            loading: () => const Center(child: CircularProgressIndicator()),
          ),
          ListView.separated(
              padding: EdgeInsets.zero,
              itemBuilder: (_, index) {
                return transferWidget(
                  invoiceNumber: transferList[index]['inv'] ?? 'n/a',
                  date: transferList[index]['date'] ?? 'n/a',
                  stockValue: transferList[index]['stock'] ?? 'n/a',
                  quantity: transferList[index]['quantity'] ?? 'n/a',
                  from: transferList[index]['from'] ?? 'n/a',
                  to: transferList[index]['to'] ?? 'n/a',
                  context: context,
                );
              },
              separatorBuilder: (_, __) => Divider(
                    color: kBackgroundColor,
                    height: 2,
                  ),
              itemCount: warehouseList.length),
        ]),
        floatingActionButtonLocation: FloatingActionButtonLocation.endFloat,
        floatingActionButton: Container(
          height: 48,
          width: 190,
          decoration: BoxDecoration(
            boxShadow: [
              BoxShadow(
                color: Color(0xFFC52127).withValues(alpha: 0.2), // #C5212733 (33 is ~20% opacity)
                offset: Offset(0, 11),
                blurRadius: 14,
                spreadRadius: 0,
              ),
            ],
          ),
          child: FloatingActionButton(
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadiusGeometry.circular(8),
            ),
            isExtended: true,
            backgroundColor: kMainColor,
            onPressed: () {
              Navigator.push(context, MaterialPageRoute(builder: (context) => AddNewWarehouse()));
            },
            child: Text(
              '+ Add Warehouse',
              style: _theme.textTheme.titleMedium?.copyWith(
                fontWeight: FontWeight.w600,
                color: Colors.white,
              ),
            ),
          ),
        ),
      ),
    );
  }

  // empty widget
  Column emptyWidget(ThemeData _theme) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.center,
      mainAxisAlignment: MainAxisAlignment.start,
      children: [
        SizedBox(height: 50),
        SvgPicture.asset(
          width: 319,
          height: 250,
          'images/empty_image.svg',
        ),
        SizedBox(height: 30),
        Text(
          'Ooph... it\'s empty in here',
          style: _theme.textTheme.bodyMedium?.copyWith(
            color: kTitleColor,
            fontSize: 24,
            fontWeight: FontWeight.w600,
          ),
        ),
        Text(
          'Add some warehouse first',
          style: _theme.textTheme.bodyMedium?.copyWith(
            color: Color(0xff4B5563),
            fontSize: 16,
            fontWeight: FontWeight.w400,
          ),
        )
      ],
    );
  }

  List<Map<String, String>> transferList = [
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
    {"inv": "65324", "date": "15 Jan 2025 10:35AM", "from": "Warehouse 1", "to": "Warehouse 2", "quantity": "30", "stock": "\$6000.00"},
  ];

  List<Map<String, String>> warehouseList = [
    {
      "title": "Warehouse 1",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 2",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 3",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 4",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 5",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 6",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 7",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 8",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 9",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
    {
      "title": "Warehouse 10",
      "amount": "\$5,00,000",
      "phone": "017123456789",
    },
  ];
}

Future<void> showEditDeletePopUp({required BuildContext context, required Map<String, String> item, WarehouseData? editData, required WidgetRef ref}) async {
  final _theme = Theme.of(context);
  return await showDialog(
    barrierDismissible: false,
    context: context,
    builder: (BuildContext dialogContext) {
      return Padding(
        padding: const EdgeInsets.all(16.0),
        child: Center(
          child: Container(
            decoration: const BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.all(
                Radius.circular(8),
              ),
            ),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.center,
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Padding(
                  padding: EdgeInsetsDirectional.only(start: 16),
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: [
                      Text(
                        'View Details',
                        style: _theme.textTheme.titleMedium?.copyWith(
                          fontWeight: FontWeight.w600,
                          fontSize: 18,
                        ),
                      ),
                      IconButton(
                        onPressed: () => Navigator.pop(context),
                        icon: Icon(Icons.close, size: 18),
                      )
                    ],
                  ),
                ),
                Divider(color: kBorderColor, height: 1),
                Padding(
                  padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
                  child: Column(
                    children: item.entries.map((entry) {
                      return Padding(
                        padding: const EdgeInsets.symmetric(vertical: 4.0),
                        child: Row(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Flexible(
                              fit: FlexFit.tight,
                              flex: 2,
                              child: Text(
                                '${entry.key} ',
                                style: _theme.textTheme.bodyLarge?.copyWith(
                                  color: kNeutral800,
                                  fontWeight: FontWeight.w500,
                                ),
                              ),
                            ),
                            SizedBox(width: 8),
                            Flexible(
                              fit: FlexFit.tight,
                              flex: 4,
                              child: Text(
                                ': ${entry.value}',
                                style: _theme.textTheme.bodyLarge,
                              ),
                            ),
                          ],
                        ),
                      );
                    }).toList(),
                  ),
                ),
                Padding(
                  padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
                  child: Row(
                    children: [
                      Expanded(
                        child: OutlinedButton(
                          onPressed: () async {
                            await Future.delayed(Duration.zero);
                            WarehouseRepo repo = WarehouseRepo();
                            bool success;
                            success = await repo.deleteWarehouse(
                              id: editData?.id.toString() ?? '',
                            );
                            if (success) {
                              ref.refresh(fetchWarehouseListProvider);
                              ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Deleted Successfully')));
                              Navigator.pop(context);
                            }
                          },
                          child: Text('Delete'),
                        ),
                      ),
                      SizedBox(width: 16),
                      Expanded(
                        child: ElevatedButton(
                          onPressed: () async {
                            Navigator.pop(context);
                            await Future.delayed(Duration.zero);
                            Navigator.push(
                              context,
                              MaterialPageRoute(
                                builder: (context) => AddNewWarehouse(editData: editData),
                              ),
                            );
                          },
                          child: Text('Edit'),
                        ),
                      ),
                    ],
                  ),
                )
              ],
            ),
          ),
        ),
      );
    },
  );
}