import 'dart:math';
import 'package:app_popup_menu/app_popup_menu.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_form_builder/flutter_form_builder.dart';
import 'package:flutter_progress_hud/flutter_progress_hud.dart';
import 'package:flutter_spinkit/flutter_spinkit.dart';
import 'package:form_builder_validators/form_builder_validators.dart';
import 'package:multi_dropdown/multiselect_dropdown.dart';
import 'package:unit2/bloc/rbac/rbac_operations/permission/permission_bloc.dart';
import 'package:unit2/model/rbac/rbac.dart';
import 'package:unit2/screens/superadmin/role/shared_pop_up_menu.dart';
import 'package:unit2/theme-data.dart/btn-style.dart';
import 'package:unit2/theme-data.dart/form-style.dart';
import 'package:unit2/utils/global_context.dart';
import 'package:unit2/widgets/Leadings/add_leading.dart';
import 'package:unit2/widgets/error_state.dart';
import '../../../theme-data.dart/box_shadow.dart';
import '../../../theme-data.dart/colors.dart';
import '../../../utils/alerts.dart';
import '../../../utils/global.dart';
import '../../../widgets/empty_data.dart';

class RbacPermissionScreen extends StatelessWidget {
  final int id;
  const RbacPermissionScreen({super.key, required this.id});

  @override
  Widget build(BuildContext context) {
    List<RBAC> objects = [];
    RBAC? selectedObject;
    List<RBAC> operations = [];
    List<ValueItem> valueItemOperations = [];
    List<ValueItem> selectedValueItemOperations = [];
    final formKey = GlobalKey<FormBuilderState>();
    BuildContext? parent;
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        backgroundColor: primary,
        title: const Text("Permissions Screen"),
        actions: [
          AddLeading(onPressed: () {
            showDialog(
                context: NavigationService.navigatorKey.currentState!.context,
                builder: (BuildContext context) {
                  valueItemOperations = operations.map((e) {
                    return ValueItem(label: e.name!, value: e.name);
                  }).toList();
                  return AlertDialog(
                    title: const Text("Add Permission"),
                    content: FormBuilder(
                        key: formKey,
                        child: Column(
                          mainAxisSize: MainAxisSize.min,
                          children: [
                            FormBuilderDropdown<RBAC>(
                              validator: FormBuilderValidators.required(
                                  errorText: "This field is required"),
                              name: "object",
                              decoration:
                                  normalTextFieldStyle("Permission", "Permission"),
                              items: objects.isEmpty
                                  ? []
                                  : objects.map((e) {
                                      return DropdownMenuItem(
                                          value: e, child: Text(e.name!));
                                    }).toList(),
                              onChanged: (RBAC? object) {
                                selectedObject = object;
                              },
                            ),
                            const SizedBox(
                              height: 12,
                            ),
                            MultiSelectDropDown(
                              onOptionSelected:
                                  (List<ValueItem> selectedOptions) {
                                selectedValueItemOperations = selectedOptions;
                              },
                              borderColor: Colors.grey,
                              borderWidth: 1,
                              borderRadius: 5,
                              hint: "Operations",
                              padding: const EdgeInsets.all(8),
                              options: valueItemOperations,
                              selectionType: SelectionType.multi,
                              chipConfig:
                                  const ChipConfig(wrapType: WrapType.wrap),
                              dropdownHeight: 300,
                              optionTextStyle: const TextStyle(fontSize: 16),
                              selectedOptionIcon:
                                  const Icon(Icons.check_circle),
                            ),
                            const SizedBox(
                              height: 12,
                            ),
                            SizedBox(
                              height: 50,
                              width: double.maxFinite,
                              child: ElevatedButton(
                                  style: mainBtnStyle(
                                      primary, Colors.transparent, second),
                                  onPressed: () {
                                    if (formKey.currentState!
                                            .saveAndValidate() &&
                                        selectedValueItemOperations
                                            .isNotEmpty) {
                                      int assignerId = id;
                                      int objectId = selectedObject!.id!;

                                      List<int> opIds = [];
                                      for (var operation in operations) {
                                        selectedValueItemOperations
                                            .forEach((element) {
                                          if (element.label.toLowerCase() ==
                                              operation.name?.toLowerCase()) {
                                            opIds.add(operation.id!);
                                          }
                                        });
                                      }
                                      opIds.forEach((element) {
                                        print(element);
                                      });
                                      Navigator.pop(context);
                                      parent!.read<PermissionBloc>().add(
                                          AddRbacPermission(
                                              assignerId: assignerId,
                                              objectId: objectId,
                                              operationIds: opIds));
                                    }
                                  },
                                  child: const Text("Submit")),
                            )
                          ],
                        )),
                  );
                });
          })
        ],
      ),
      body: ProgressHUD(
        padding: const EdgeInsets.all(24),
        backgroundColor: Colors.black87,
        indicatorWidget: const SpinKitFadingCircle(color: Colors.white),
        child: BlocConsumer<PermissionBloc, PermissionState>(
          listener: (context, state) {
            if (state is PermissonLoadingState) {
              final progress = ProgressHUD.of(context);
              progress!.showWithText("Please wait...");
            }
            if (state is PermissionLoaded ||
                state is PermissionErrorState ||
                state is PermissionAddedState) {
              final progress = ProgressHUD.of(context);
              progress!.dismiss();
            }
            ////Added State
            if (state is PermissionAddedState) {
              if (state.response['success']) {
                successAlert(
                    context, "Adding Successfull!", state.response['message'],
                    () {
                  Navigator.of(context).pop();
                  context.read<PermissionBloc>().add(GetPermissions());
                });
              } else {
                errorAlert(context, "Adding Failed", state.response['message'],
                    () {
                  Navigator.of(context).pop();
                  context.read<PermissionBloc>().add(GetPermissions());
                });
              }
            }
            ////Deleted State
            if (state is PermissionDeletedState) {
              if (state.success) {
                successAlert(context, "Delete Successfull!",
                    "Permission Deleted Successfully", () {
                  Navigator.of(context).pop();
                  context.read<PermissionBloc>().add(GetPermissions());
                });
              } else {
                errorAlert(context, "Delete Failed", "Permission Delete Failed",
                    () {
                  Navigator.of(context).pop();
                  context.read<PermissionBloc>().add(GetPermissions());
                });
              }
            }
          },
          builder: (context, state) {
            parent = context;
            if (state is PermissionLoaded) {
              objects = state.objects;
              operations = state.operations;
              if (state.permissions.isNotEmpty) {
                return ListView.builder(
                    padding:
                        const EdgeInsets.symmetric(vertical: 8, horizontal: 10),
                    itemCount: state.permissions.length,
                    itemBuilder: (BuildContext context, int index) {
                      return Column(
                        children: [
                          Container(
                            width: screenWidth,
                            decoration: box1(),
                            padding: const EdgeInsets.symmetric(
                                horizontal: 12, vertical: 8),
                            child: Row(
                              children: [
                                Expanded(
                                    child: Row(
                                      children: [
                                         CircleAvatar(
                                      child: Text('${index + 1}'),
                                    ),
                                    const SizedBox(
                                      width: 12,
                                    ),
                                        Flexible(
                                          child: Text(
                                              "${state.permissions[index].object?.name} - ${state.permissions[index].operation?.name}",
                                              style: Theme.of(context)
                                                  .textTheme
                                                  .titleMedium!
                                                  .copyWith(
                                                      fontWeight: FontWeight.w500,
                                                      color: primary)),
                                        ),
                                      ],
                                    )),
                                AppPopupMenu<int>(
                                  offset: const Offset(-10, -10),
                                  elevation: 3,
                                  onSelected: (value) {
                                     if (value == 1) {
                                      
                                      confirmAlert(context, () {
                                     context.read<PermissionBloc>().add(
                                          DeleteRbacPermission(
                                              permissionId: state.permissions[index].id!));
                                      }, "Delete?", "Confirm Delete?");
                                     
                                    }
                                  },
                                  menuItems: [
                               
                                    popMenuItem(
                                        text: "Remove",
                                        value: 1,
                                        icon: Icons.delete),
                                  ],
                                  icon: const Icon(
                                    Icons.more_vert,
                                    color: Colors.grey,
                                  ),
                                  tooltip: "Options",
                                ),
                              ],
                            ),
                          ),
                          const SizedBox(
                            height: 5,
                          )
                        ],
                      );
                    });
              } else {
                return const EmptyData(
                    message: "No Permission available. Please click + to add.");
              }
            }
            if (state is PermissionErrorState) {
              return SomethingWentWrong(
                  message: state.message, onpressed: () {
                        parent!.read<PermissionBloc>().add(GetPermissions());
                  });
            }
            return Container();
          },
        ),
      ),
    );
  }
}