/*
 * Copyright (C) 2023 Yubico.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../app/message.dart';
import '../../app/models.dart';
import '../../app/state.dart';
import '../../exception/cancellation_exception.dart';
import '../../widgets/choice_filter_chip.dart';
import '../../widgets/responsive_dialog.dart';
import '../keys.dart' as keys;
import '../models.dart';
import '../state.dart';
import 'overwrite_confirm_dialog.dart';

class MoveKeyDialog extends ConsumerStatefulWidget {
  final DevicePath devicePath;
  final PivState pivState;
  final PivSlot pivSlot;
  const MoveKeyDialog(this.devicePath, this.pivState, this.pivSlot,
      {super.key});

  @override
  ConsumerState<ConsumerStatefulWidget> createState() => _MoveKeyDialogState();
}

class _MoveKeyDialogState extends ConsumerState<MoveKeyDialog> {
  SlotId? _destination;
  late bool _includeCertificate;

  @override
  void initState() {
    super.initState();
    _includeCertificate = widget.pivSlot.certInfo != null;
  }

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;

    return ResponsiveDialog(
      title: Text(l10n.l_move_key),
      actions: [
        TextButton(
          key: keys.deleteButton,
          onPressed: _destination != null
              ? () async {
                  try {
                    final pivSlots =
                        ref.read(pivSlotsProvider(widget.devicePath)).asData;
                    if (pivSlots != null) {
                      final destination = pivSlots.value.firstWhere(
                          (element) => element.slot == _destination);

                      if (!await confirmOverwrite(context, destination,
                          writeKey: true, writeCert: _includeCertificate)) {
                        return;
                      }

                      await ref
                          .read(pivSlotsProvider(widget.devicePath).notifier)
                          .moveKey(
                              widget.pivSlot.slot,
                              destination.slot,
                              destination.metadata != null,
                              _includeCertificate);

                      await ref.read(withContextProvider)(
                        (context) async {
                          String message;
                          if (_includeCertificate) {
                            message = l10n.l_key_and_certificate_moved;
                          } else {
                            message = l10n.l_key_moved;
                          }

                          Navigator.of(context).pop(true);
                          showMessage(context, message);
                        },
                      );
                    }
                  } on CancellationException catch (_) {
                    // ignored
                  }
                }
              : null,
          child: Text(l10n.s_move),
        ),
      ],
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 18.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(_destination == null
                ? l10n.q_move_key_confirm(
                    widget.pivSlot.slot.getDisplayName(l10n))
                : widget.pivSlot.certInfo != null && _includeCertificate
                    ? l10n.q_move_key_and_certificate_to_slot_confirm(
                        widget.pivSlot.slot.getDisplayName(l10n),
                        _destination!.getDisplayName(l10n))
                    : l10n.q_move_key_to_slot_confirm(
                        widget.pivSlot.slot.getDisplayName(l10n),
                        _destination!.getDisplayName(l10n))),
            Wrap(
              spacing: 4.0,
              runSpacing: 8.0,
              children: [
                ChoiceFilterChip<SlotId?>(
                  menuConstraints: const BoxConstraints(maxHeight: 200),
                  value: _destination,
                  items: SlotId.values
                      .where((element) => element != widget.pivSlot.slot)
                      .toList(),
                  labelBuilder: (value) => Text(_destination == null
                      ? l10n.l_select_destination_slot
                      : _destination!.getDisplayName(l10n)),
                  itemBuilder: (value) => Text(value!.getDisplayName(l10n)),
                  onChanged: (value) {
                    setState(() {
                      _destination = value;
                    });
                  },
                ),
                if (widget.pivSlot.certInfo != null)
                  FilterChip(
                      label: Text(l10n.l_include_certificate),
                      selected: _includeCertificate,
                      onSelected: (value) {
                        setState(() {
                          _includeCertificate = value;
                        });
                      })
              ],
            ),
          ]
              .map((e) => Padding(
                    padding: const EdgeInsets.symmetric(vertical: 8.0),
                    child: e,
                  ))
              .toList(),
        ),
      ),
    );
  }
}