import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../app/shortcuts.dart';
import '../../app/state.dart';
import '../../core/models.dart';
import '../../core/state.dart';
import '../../widgets/dialog_frame.dart';
import '../models.dart';
import 'account_mixin.dart';

class AccountDialog extends ConsumerWidget with AccountMixin {
  @override
  final OathCredential credential;
  const AccountDialog(this.credential, {super.key});

  @override
  Future<OathCredential?> renameCredential(
      BuildContext context, WidgetRef ref) async {
    final renamed = await super.renameCredential(context, ref);
    if (renamed != null) {
      // Replace this dialog with a new one, for the renamed credential.
      await ref.read(withContextProvider)((context) async {
        Navigator.of(context).pop();
        await showDialog(
          context: context,
          builder: (context) {
            return AccountDialog(renamed);
          },
        );
      });
    }
    return renamed;
  }

  @override
  Future<bool> deleteCredential(BuildContext context, WidgetRef ref) async {
    final deleted = await super.deleteCredential(context, ref);
    if (deleted) {
      await ref.read(withContextProvider)((context) async {
        Navigator.of(context).pop();
      });
    }
    return deleted;
  }

  List<Widget> _buildActions(BuildContext context, WidgetRef ref) {
    final actions = buildActions(context, ref);

    final theme =
        ButtonTheme.of(context).colorScheme ?? Theme.of(context).colorScheme;

    final copy = actions.firstWhere(((e) => e.text.startsWith('Copy')));
    final delete = actions.firstWhere(((e) => e.text.startsWith('Delete')));
    final colors = {
      copy: Pair(theme.primary, theme.onPrimary),
      delete: Pair(theme.error, theme.onError),
    };

    // If we can't copy, but can calculate, highlight that button instead
    if (copy.action == null) {
      final calculates = actions.where(((e) => e.text.startsWith('Calculate')));
      if (calculates.isNotEmpty) {
        colors[calculates.first] = Pair(theme.primary, theme.onPrimary);
      }
    }

    return actions.map((e) {
      final action = e.action;
      final color = colors[e] ?? Pair(theme.secondary, theme.onSecondary);
      return Padding(
        padding: const EdgeInsets.symmetric(horizontal: 4.0),
        child: CircleAvatar(
          backgroundColor: action != null ? color.first : theme.secondary,
          foregroundColor: color.second,
          child: IconButton(
            icon: e.icon,
            iconSize: 22,
            tooltip: e.text,
            disabledColor: theme.onSecondary.withOpacity(0.2),
            onPressed: action != null
                ? () {
                    action(context);
                  }
                : null,
          ),
        ),
      );
    }).toList();
  }

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    // TODO: Solve this in a cleaner way
    if (ref.watch(currentDeviceDataProvider) == null) {
      // The rest of this method assumes there is a device, and will throw an exception if not.
      // This will never be shown, as the dialog will be immediately closed
      return const SizedBox();
    }

    final code = getCode(ref);
    if (code == null) {
      if (isDesktop) {
        Timer(Duration.zero, () => calculateCode(context, ref));
      }
    }
    return Actions(
      actions: {
        CopyIntent: CallbackAction(onInvoke: (_) async {
          if (isExpired(code, ref)) {
            await calculateCode(context, ref);
          }
          await ref.read(withContextProvider)(
            (context) async {
              copyToClipboard(context, ref);
            },
          );
          return null;
        }),
      },
      child: Focus(
        autofocus: true,
        child: DialogFrame(
          child: AlertDialog(
            title: Center(
              child: Text(
                title,
                overflow: TextOverflow.fade,
                style: Theme.of(context).textTheme.headlineSmall,
                maxLines: 1,
                softWrap: false,
              ),
            ),
            contentPadding: const EdgeInsets.symmetric(horizontal: 12.0),
            content: Column(
              crossAxisAlignment: CrossAxisAlignment.center,
              mainAxisSize: MainAxisSize.min,
              children: [
                if (subtitle != null)
                  Text(
                    subtitle!,
                    overflow: TextOverflow.fade,
                    maxLines: 1,
                    softWrap: false,
                    // This is what ListTile uses for subtitle
                    style: Theme.of(context).textTheme.bodyMedium!.copyWith(
                          color: Theme.of(context).textTheme.caption!.color,
                        ),
                  ),
                const SizedBox(height: 12.0),
                DecoratedBox(
                  decoration: BoxDecoration(
                    shape: BoxShape.rectangle,
                    color: CardTheme.of(context).color,
                    borderRadius: const BorderRadius.all(Radius.circular(30.0)),
                  ),
                  child: Center(
                    child: FittedBox(
                      child: DefaultTextStyle.merge(
                        style: const TextStyle(fontSize: 28),
                        child: IconTheme(
                          data: IconTheme.of(context).copyWith(size: 24),
                          child: Padding(
                            padding: const EdgeInsets.symmetric(
                                horizontal: 16.0, vertical: 8.0),
                            child: buildCodeView(ref),
                          ),
                        ),
                      ),
                    ),
                  ),
                ),
              ],
            ),
            actionsPadding: const EdgeInsets.only(top: 10.0, right: -16.0),
            actions: [
              Center(
                child: FittedBox(
                  alignment: Alignment.center,
                  child: Row(children: _buildActions(context, ref)),
                ),
              )
            ],
          ),
        ),
      ),
    );
  }
}