import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:selfprivacy/logic/bloc/backups/backups_bloc.dart';
import 'package:selfprivacy/logic/bloc/server_jobs/server_jobs_bloc.dart';
import 'package:selfprivacy/logic/models/json/server_job.dart';
import 'package:selfprivacy/logic/models/service.dart';

class CreateBackupsModal extends StatefulWidget {
  const CreateBackupsModal({
    required this.services,
    required this.scrollController,
    super.key,
  });

  final List<Service> services;
  final ScrollController scrollController;

  @override
  State<CreateBackupsModal> createState() => _CreateBackupsModalState();
}

class _CreateBackupsModalState extends State<CreateBackupsModal> {
  // Store in state the selected services to backup
  List<Service> selectedServices = [];

  // Select all services on modal open
  @override
  void initState() {
    super.initState();
    final List<String> busyServices = context
        .read<ServerJobsBloc>()
        .state
        .backupJobList
        .where(
          (final ServerJob job) =>
              job.status == JobStatusEnum.running ||
              job.status == JobStatusEnum.created,
        )
        .map((final ServerJob job) => job.typeId.split('.')[1])
        .toList();
    selectedServices.addAll(
      widget.services
          .where((final Service service) => !busyServices.contains(service.id)),
    );
  }

  @override
  Widget build(final BuildContext context) {
    final List<String> busyServices = context
        .watch<ServerJobsBloc>()
        .state
        .backupJobList
        .where(
          (final ServerJob job) =>
              job.status == JobStatusEnum.running ||
              job.status == JobStatusEnum.created,
        )
        .map((final ServerJob job) => job.typeId.split('.')[1])
        .toList();

    return ListView(
      controller: widget.scrollController,
      padding: const EdgeInsets.all(16),
      children: [
        const SizedBox(height: 16),
        Text(
          'backup.create_new_select_heading'.tr(),
          style: Theme.of(context).textTheme.headlineSmall,
          textAlign: TextAlign.center,
        ),
        const SizedBox(height: 16),
        // Select all services tile
        CheckboxListTile(
          onChanged: (final bool? value) {
            setState(() {
              if (value ?? true) {
                setState(() {
                  selectedServices.clear();
                  selectedServices.addAll(
                    widget.services.where(
                      (final service) => !busyServices.contains(service.id),
                    ),
                  );
                });
              } else {
                selectedServices.clear();
              }
            });
          },
          title: Text(
            'backup.select_all'.tr(),
          ),
          secondary: const Icon(
            Icons.checklist_outlined,
          ),
          value: selectedServices.length >=
              widget.services.length - busyServices.length,
        ),
        const Divider(
          height: 1.0,
        ),
        ...widget.services.map(
          (final Service service) {
            final bool busy = busyServices.contains(service.id);
            return CheckboxListTile(
              onChanged: !busy
                  ? (final bool? value) {
                      setState(() {
                        if (value ?? true) {
                          setState(() {
                            selectedServices.add(service);
                          });
                        } else {
                          setState(() {
                            selectedServices.remove(service);
                          });
                        }
                      });
                    }
                  : null,
              title: Text(
                service.displayName,
              ),
              subtitle: Text(
                busy ? 'backup.service_busy'.tr() : service.backupDescription,
              ),
              secondary: SvgPicture.string(
                service.svgIcon,
                height: 24,
                width: 24,
                colorFilter: ColorFilter.mode(
                  busy
                      ? Theme.of(context).colorScheme.outlineVariant
                      : Theme.of(context).colorScheme.onBackground,
                  BlendMode.srcIn,
                ),
              ),
              value: selectedServices.contains(service),
            );
          },
        ),
        const SizedBox(height: 16),
        // Create backup button
        FilledButton(
          onPressed: selectedServices.isEmpty
              ? null
              : () {
                  context
                      .read<BackupsBloc>()
                      .add(CreateBackups(selectedServices));
                  Navigator.of(context).pop();
                },
          child: Text(
            'backup.start'.tr(),
          ),
        ),
      ],
    );
  }
}