import 'dart:async';

import 'package:drift/drift.dart';
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:go_router/go_router.dart';
import 'package:intl/intl.dart';
import 'package:twonly/locator.dart';
import 'package:twonly/src/constants/routes.keys.dart';
import 'package:twonly/src/database/daos/contacts.dao.dart';
import 'package:twonly/src/database/tables/contacts.table.dart';
import 'package:twonly/src/database/twonly.db.dart';
import 'package:twonly/src/services/user_discovery.service.dart';
import 'package:twonly/src/utils/misc.dart';
import 'package:twonly/src/visual/components/alert.dialog.dart';
import 'package:twonly/src/visual/components/avatar_icon.comp.dart';
import 'package:twonly/src/visual/components/flame_counter.comp.dart';
import 'package:twonly/src/visual/components/select_chat_deletion_time.comp.dart';
import 'package:twonly/src/visual/components/verification_badge.comp.dart';
import 'package:twonly/src/visual/elements/better_list_title.element.dart';
import 'package:twonly/src/visual/views/contact/contact_components/restore_flame.comp.dart';
import 'package:twonly/src/visual/views/groups/group.view.dart';

class ContactView extends StatefulWidget {
  const ContactView(this.userId, {super.key});

  final int userId;

  @override
  State<ContactView> createState() => _ContactViewState();
}

class _ContactViewState extends State<ContactView> {
  Contact? _contact;
  List<GroupMember> _memberOfGroups = [];
  List<KeyVerification> _keyVerifications = [];
  List<(Contact, DateTime)> _transferredTrust = [];

  late StreamSubscription<Contact?> _streamContact;
  late StreamSubscription<List<GroupMember>> _streamMemberOfGroups;
  late StreamSubscription<List<KeyVerification>> _streamKeyVerifications;
  late StreamSubscription<List<(Contact, DateTime)>> _streamTransferredTrust;

  @override
  void initState() {
    super.initState();
    _streamContact = twonlyDB.contactsDao.watchContact(widget.userId).listen((
      update,
    ) {
      if (update != null) {
        setState(() {
          _contact = update;
        });
      }
    });
    _streamMemberOfGroups = twonlyDB.groupsDao
        .watchContactGroupMember(widget.userId)
        .listen((groups) async {
          if (!mounted) return;
          setState(() {
            _memberOfGroups = groups;
          });
        });
    _streamKeyVerifications = twonlyDB.keyVerificationDao
        .watchContactVerification(widget.userId)
        .listen((update) {
          if (!mounted) return;
          setState(() {
            _keyVerifications = update;
          });
        });
    _streamTransferredTrust = twonlyDB.keyVerificationDao
        .watchTransferredTrustVerifications(widget.userId)
        .listen((update) {
          if (!mounted) return;
          setState(() {
            _transferredTrust = update;
          });
        });
  }

  @override
  void dispose() {
    _streamContact.cancel();
    _streamMemberOfGroups.cancel();
    _streamKeyVerifications.cancel();
    _streamTransferredTrust.cancel();
    super.dispose();
  }

  Future<void> handleUserRemoveRequest(Contact contact) async {
    var delete = true;
    for (final groupM in _memberOfGroups) {
      final group = await twonlyDB.groupsDao.getGroup(groupM.groupId);
      if (group?.deletedContent ?? false) {
        await twonlyDB.groupsDao.deleteGroup(group!.groupId);
      } else {
        delete = false;
      }
    }
    if (!mounted) return;

    if (!delete) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(context.lang.deleteUserErrorMessage),
          duration: const Duration(seconds: 8),
        ),
      );
      return;
    }

    final remove = await showAlertDialog(
      context,
      context.lang.contactRemoveTitle(
        getContactDisplayName(contact, maxLength: 20),
      ),
      context.lang.contactRemoveBody,
    );
    if (remove) {
      await twonlyDB.contactsDao.deleteContactByUserId(contact.userId);
      // await twonlyDB.contactsDao.updateContact(
      //   contact.userId,
      //   const ContactsCompanion(
      //     accepted: Value(false),
      //     requested: Value(false),
      //     deletedByUser: Value(true),
      //   ),
      // );
      if (mounted) {
        Navigator.popUntil(context, (route) => route.isFirst);
      }
    }
  }

  Future<void> handleUserBlockRequest(Contact contact) async {
    final block = await showAlertDialog(
      context,
      context.lang.contactBlockTitle(getContactDisplayName(contact)),
      context.lang.contactBlockBody,
    );
    if (block) {
      const update = ContactsCompanion(blocked: Value(true));
      if (context.mounted) {
        await twonlyDB.contactsDao.updateContact(contact.userId, update);
      }
      if (mounted) {
        Navigator.popUntil(context, (route) => route.isFirst);
      }
    }
  }

  Future<void> handleReportUser(Contact contact) async {
    final reason = await showReportDialog(context, contact);
    if (reason == null) return;
    final res = await apiService.reportUser(contact.userId, reason);
    if (!mounted) return;
    if (res.isSuccess) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(context.lang.userGotReported),
          duration: const Duration(seconds: 3),
        ),
      );
    } else {
      showNetworkIssue(context);
    }
  }

  @override
  Widget build(BuildContext context) {
    if (_contact == null) return Container();
    final contact = _contact!;

    return Scaffold(
      appBar: AppBar(
        title: const Text(''),
      ),
      body: ListView(
        key: ValueKey(contact.userId),
        children: [
          Padding(
            padding: const EdgeInsets.all(10),
            child: AvatarIcon(contactId: contact.userId, fontSize: 30),
          ),
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Padding(
                padding: const EdgeInsets.only(right: 10),
                child: VerificationBadgeComp(
                  contact: contact,
                ),
              ),
              Text(
                getContactDisplayName(contact, maxLength: 20),
                style: const TextStyle(fontSize: 20),
              ),
              FlameCounterWidget(
                contactId: contact.userId,
                prefix: true,
              ),
            ],
          ),
          if (getContactDisplayName(contact) != contact.username)
            Center(child: Text('(${contact.username})')),
          const SizedBox(height: 50),
          BetterListTile(
            icon: FontAwesomeIcons.solidComments,
            text: context.lang.contactViewMessage,
            onTap: () async {
              final group = await twonlyDB.groupsDao.getDirectChat(
                contact.userId,
              );
              if (group != null && context.mounted) {
                await context.push(Routes.chatsMessages(group.groupId));
              }
            },
          ),
          const Divider(),
          BetterListTile(
            icon: FontAwesomeIcons.pencil,
            text: context.lang.contactNickname,
            onTap: () async {
              final nickName = await showNicknameChangeDialog(context, contact);

              if (context.mounted && nickName != null && nickName != '') {
                final update = ContactsCompanion(nickName: Value(nickName));
                await twonlyDB.contactsDao.updateContact(
                  contact.userId,
                  update,
                );
              }
            },
          ),
          SelectChatDeletionTimeListTitle(
            groupId: getUUIDforDirectChat(
              widget.userId,
              userService.currentUser.userId,
            ),
          ),
          const Divider(),
          RestoreFlameComp(
            contactId: widget.userId,
          ),
          if (_keyVerifications.isEmpty && _transferredTrust.isEmpty)
            BetterListTile(
              leading: VerificationBadgeComp(
                contact: contact,
                size: 20,
              ),
              text: context.lang.contactVerifyNumberTitle,
              onTap: () async {
                await context.push(Routes.settingsHelpFaqVerifyBadge);
                setState(() {});
              },
            ),
          if (_keyVerifications.isNotEmpty || _transferredTrust.isNotEmpty)
            ExpansionTile(
              shape: const RoundedRectangleBorder(),
              backgroundColor: context.color.surfaceContainer,
              collapsedShape: const RoundedRectangleBorder(),
              leading: Padding(
                padding: const EdgeInsetsGeometry.only(left: 12, right: 12),
                child: VerificationBadgeComp(
                  contact: contact,
                  size: 20,
                ),
              ),
              title: Text(context.lang.userVerifiedTitle),
              children: [
                ..._keyVerifications.map(
                  (kv) => ListTile(
                    dense: true,
                    title: Text(_verificationTypeLabel(context, kv.type)),
                    trailing: Text(
                      DateFormat.yMd(
                        Localizations.localeOf(context).toString(),
                      ).format(kv.createdAt),
                      style: TextStyle(
                        color: context.color.onSurfaceVariant,
                        fontSize: 13,
                      ),
                    ),
                  ),
                ),
                ..._transferredTrust.map(
                  (tt) => ListTile(
                    dense: true,
                    title: Text(
                      context.lang.contactVerifiedBy(
                        getContactDisplayName(tt.$1),
                      ),
                    ),
                    trailing: Text(
                      DateFormat.yMd(
                        Localizations.localeOf(context).toString(),
                      ).format(tt.$2),
                      style: TextStyle(
                        color: context.color.onSurfaceVariant,
                        fontSize: 13,
                      ),
                    ),
                  ),
                ),
              ],
            ),
          if (userService.currentUser.isUserDiscoveryEnabled)
            BetterListTile(
              icon: FontAwesomeIcons.usersViewfinder,
              text: context.lang.userDiscoverySettingsTitle,
              subtitle:
                  !contact.userDiscoveryExcluded &&
                      contact.mediaSendCounter <
                          userService.currentUser.minimumRequiredImagesExchanged
                  ? Text(
                      context.lang.contactUserDiscoveryImagesLeft(
                        userService.currentUser.minimumRequiredImagesExchanged -
                            contact.mediaSendCounter,
                        getContactDisplayName(contact),
                      ),
                      style: const TextStyle(fontSize: 9),
                    )
                  : null,
              trailing: Transform.scale(
                scale: 0.8,
                child: Switch(
                  value: !contact.userDiscoveryExcluded,
                  onChanged: (a) async {
                    await UserDiscoveryService.changeExclusionForContact(
                      contact.userId,
                      !a,
                    );
                  },
                ),
              ),
            ),
          BetterListTile(
            icon: FontAwesomeIcons.flag,
            text: context.lang.reportUser,
            onTap: () => handleReportUser(contact),
          ),
          BetterListTile(
            icon: FontAwesomeIcons.ban,
            text: context.lang.contactBlock,
            onTap: () => handleUserBlockRequest(contact),
          ),
          BetterListTile(
            icon: FontAwesomeIcons.userMinus,
            iconSize: 16,
            color: Colors.red,
            text: context.lang.contactRemove,
            onTap: () => handleUserRemoveRequest(contact),
          ),
        ],
      ),
    );
  }
}

String _verificationTypeLabel(BuildContext context, VerificationType type) {
  return switch (type) {
    VerificationType.qrScanned => context.lang.verificationTypeQrScanned,
    VerificationType.secretQrToken =>
      context.lang.verificationTypeSecretQrToken,
    VerificationType.link => context.lang.verificationTypeLink,
    VerificationType.contactSharedByVerified =>
      context.lang.verificationTypeContactSharedByVerified,
    VerificationType.migratedFromOldVersion =>
      context.lang.verificationTypeMigratedFromOldVersion,
  };
}

Future<String?> showNicknameChangeDialog(
  BuildContext context,
  Contact contact,
) {
  final controller = TextEditingController(
    text: getContactDisplayName(contact),
  );

  return showDialog<String>(
    context: context,
    builder: (context) {
      return AlertDialog(
        title: Text(context.lang.contactNickname),
        content: TextField(
          controller: controller,
          autofocus: true,
          decoration: InputDecoration(
            hintText: context.lang.contactNicknameNew,
          ),
        ),
        actions: <Widget>[
          TextButton(
            child: Text(context.lang.cancel),
            onPressed: () {
              Navigator.of(context).pop(); // Close the dialog
            },
          ),
          TextButton(
            child: Text(context.lang.ok),
            onPressed: () {
              Navigator.of(
                context,
              ).pop(controller.text); // Return the input text
            },
          ),
        ],
      );
    },
  );
}

Future<String?> showReportDialog(
  BuildContext context,
  Contact contact,
) {
  final controller = TextEditingController();

  return showDialog<String>(
    context: context,
    builder: (context) {
      return AlertDialog(
        title: Text(
          context.lang.reportUserTitle(getContactDisplayName(contact)),
        ),
        content: TextField(
          controller: controller,
          autofocus: true,
          decoration: InputDecoration(hintText: context.lang.reportUserReason),
        ),
        actions: <Widget>[
          TextButton(
            child: Text(context.lang.cancel),
            onPressed: () {
              Navigator.of(context).pop();
            },
          ),
          TextButton(
            child: Text(context.lang.ok),
            onPressed: () {
              Navigator.of(context).pop(controller.text);
            },
          ),
        ],
      );
    },
  );
}