import 'dart:ui' as ui;

import 'package:flutter/material.dart';

import 'package:badges/badges.dart';
import 'package:go_router/go_router.dart';
import 'package:matrix/matrix.dart';

import 'package:fluffychat/config/themes.dart';
import 'package:fluffychat/l10n/l10n.dart';
import 'package:fluffychat/pages/chat/chat.dart';
import 'package:fluffychat/pages/chat/chat_app_bar_list_tile.dart';
import 'package:fluffychat/pages/chat/chat_app_bar_title.dart';
import 'package:fluffychat/pages/chat/chat_event_list.dart';
import 'package:fluffychat/pages/chat/pinned_events.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_room_extension.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_session_chat/activity_finished_status_message.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_session_chat/activity_pinned_message.dart';
import 'package:fluffychat/pangea/activity_sessions/activity_session_chat/load_activity_summary_widget.dart';
import 'package:fluffychat/pangea/chat/widgets/chat_input_bar.dart';
import 'package:fluffychat/pangea/chat/widgets/chat_input_bar_header.dart';
import 'package:fluffychat/pangea/chat/widgets/chat_view_background.dart';
import 'package:fluffychat/utils/account_config.dart';
import 'package:fluffychat/utils/localized_exception_extension.dart';
import 'package:fluffychat/widgets/future_loading_dialog.dart';
import 'package:fluffychat/widgets/matrix.dart';
import 'package:fluffychat/widgets/mxc_image.dart';
import 'package:fluffychat/widgets/unread_rooms_badge.dart';
import '../../utils/stream_extension.dart';

// #Pangea
// enum _EventContextAction { info, report }
// Pangea#

class ChatView extends StatelessWidget {
  final ChatController controller;

  const ChatView(this.controller, {super.key});

  List<Widget> _appBarActions(BuildContext context) {
    // #Pangea
    // if (controller.selectMode) {
    //   return [
    //     if (controller.canEditSelectedEvents)
    //       IconButton(
    //         icon: const Icon(Icons.edit_outlined),
    //         tooltip: L10n.of(context).edit,
    //         onPressed: controller.editSelectedEventAction,
    //       ),
    //     IconButton(
    //       icon: const Icon(Icons.copy_outlined),
    //       tooltip: L10n.of(context).copy,
    //       onPressed: controller.copyEventsAction,
    //     ),
    //     if (controller.canPinSelectedEvents)
    //       IconButton(
    //         icon: const Icon(Icons.push_pin_outlined),
    //         onPressed: controller.pinEvent,
    //         tooltip: L10n.of(context).pinMessage,
    //       ),
    //     if (controller.canRedactSelectedEvents)
    //       IconButton(
    //         icon: const Icon(Icons.delete_outlined),
    //         tooltip: L10n.of(context).redactMessage,
    //         onPressed: controller.redactEventsAction,
    //       ),
    //     if (controller.selectedEvents.length == 1)
    //       PopupMenuButton<_EventContextAction>(
    //         useRootNavigator: true,
    //         onSelected: (action) {
    //           switch (action) {
    //             case _EventContextAction.info:
    //               controller.showEventInfo();
    //               controller.clearSelectedEvents();
    //               break;
    //             case _EventContextAction.report:
    //               controller.reportEventAction();
    //               break;
    //           }
    //         },
    //         itemBuilder: (context) => [
    //           if (controller.canSaveSelectedEvent)
    //             PopupMenuItem(
    //               onTap: () => controller.saveSelectedEvent(context),
    //               value: null,
    //               child: Row(
    //                 mainAxisSize: MainAxisSize.min,
    //                 children: [
    //                   const Icon(Icons.download_outlined),
    //                   const SizedBox(width: 12),
    //                   Text(L10n.of(context).downloadFile),
    //                 ],
    //               ),
    //             ),
    //           PopupMenuItem(
    //             value: _EventContextAction.info,
    //             child: Row(
    //               mainAxisSize: MainAxisSize.min,
    //               children: [
    //                 const Icon(Icons.info_outlined),
    //                 const SizedBox(width: 12),
    //                 Text(L10n.of(context).messageInfo),
    //               ],
    //             ),
    //           ),
    //           if (controller.selectedEvents.single.status.isSent)
    //             PopupMenuItem(
    //               value: _EventContextAction.report,
    //               child: Row(
    //                 mainAxisSize: MainAxisSize.min,
    //                 children: [
    //                   const Icon(
    //                     Icons.shield_outlined,
    //                     color: Colors.red,
    //                   ),
    //                   const SizedBox(width: 12),
    //                   Text(L10n.of(context).reportMessage),
    //                 ],
    //               ),
    //             ),
    //         ],
    //       ),
    //   ];
    // } else
    // Pangea#
    if (!controller.room.isArchived) {
      // #Pangea
      return [
        if (controller.room.activityPlan == null ||
            !controller.room.showActivityChatUI)
          IconButton(
            icon: const Icon(Icons.search_outlined),
            tooltip: L10n.of(context).search,
            onPressed: () {
              context.go('/rooms/${controller.room.id}/search');
            },
          ),
        IconButton(
          icon: const Icon(Icons.settings_outlined),
          tooltip: L10n.of(context).chatDetails,
          onPressed: () {
            if (GoRouterState.of(context).uri.path.endsWith('/details')) {
              context.go('/rooms/${controller.room.id}');
            } else {
              context.go('/rooms/${controller.room.id}/details');
            }
          },
        ),
      ];
      // return [
      //   if (AppConfig.experimentalVoip &&
      //       Matrix.of(context).voipPlugin != null &&
      //       controller.room.isDirectChat)
      //     IconButton(
      //       onPressed: controller.onPhoneButtonTap,
      //       icon: const Icon(Icons.call_outlined),
      //       tooltip: L10n.of(context).placeCall,
      //     ),
      //   EncryptionButton(controller.room),
      //   ChatSettingsPopupMenu(controller.room, true),
      // ];
      // Pangea#
    }
    return [];
  }

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    if (controller.room.membership == Membership.invite) {
      showFutureLoadingDialog(
        context: context,
        future: () => controller.room.join(),
        exceptionContext: ExceptionContext.joinRoom,
      );
    }
    final bottomSheetPadding = FluffyThemes.isColumnMode(context) ? 16.0 : 8.0;
    final scrollUpBannerEventId = controller.scrollUpBannerEventId;

    final accountConfig = Matrix.of(context).client.applicationAccountConfig;

    return PopScope(
      canPop: controller.selectedEvents.isEmpty && !controller.showEmojiPicker,
      onPopInvokedWithResult: (pop, _) async {
        if (pop) return;
        if (controller.selectedEvents.isNotEmpty) {
          controller.clearSelectedEvents();
        } else if (controller.showEmojiPicker) {
          controller.emojiPickerAction();
        }
      },
      child: StreamBuilder(
        stream: controller.room.client.onRoomState.stream
            .where((update) => update.roomId == controller.room.id)
            .rateLimit(const Duration(seconds: 1)),
        builder: (context, snapshot) => FutureBuilder(
          future: controller.loadTimelineFuture,
          builder: (BuildContext context, snapshot) {
            var appbarBottomHeight = 0.0;
            if (controller.room.pinnedEventIds.isNotEmpty) {
              appbarBottomHeight += ChatAppBarListTile.fixedHeight;
            }
            if (scrollUpBannerEventId != null) {
              appbarBottomHeight += ChatAppBarListTile.fixedHeight;
            }
            return Scaffold(
              appBar: AppBar(
                // #Pangea
                // actionsIconTheme:
                // IconThemeData(
                // #Pangea
                //   color: controller.selectedEvents.isEmpty
                //       ? null
                //       : theme.colorScheme.onTertiaryContainer,
                // ),
                // backgroundColor: controller.selectedEvents.isEmpty
                //     ? null
                //     : theme.colorScheme.tertiaryContainer,
                // Pangea#
                automaticallyImplyLeading: false,
                leading: controller.selectMode
                    ? IconButton(
                        icon: const Icon(Icons.close),
                        onPressed: controller.clearSelectedEvents,
                        tooltip: L10n.of(context).close,
                        color: theme.colorScheme.onTertiaryContainer,
                      )
                    // #Pangea
                    : controller.widget.backButton != null
                        ? controller.widget.backButton!
                        // Pangea#
                        : FluffyThemes.isColumnMode(context)
                            ? null
                            : StreamBuilder<Object>(
                                stream: Matrix.of(context)
                                    .client
                                    .onSync
                                    .stream
                                    .where(
                                      (syncUpdate) => syncUpdate.hasRoomUpdate,
                                    ),
                                builder: (context, _) => UnreadRoomsBadge(
                                  filter: (r) => r.id != controller.roomId,
                                  badgePosition:
                                      BadgePosition.topEnd(end: 8, top: 4),
                                  child: const Center(child: BackButton()),
                                ),
                              ),
                titleSpacing: FluffyThemes.isColumnMode(context) ? 24 : 0,
                title: ChatAppBarTitle(controller),
                actions: _appBarActions(context),
                bottom: PreferredSize(
                  preferredSize: Size.fromHeight(appbarBottomHeight),
                  child: Column(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      PinnedEvents(controller),
                      if (scrollUpBannerEventId != null)
                        ChatAppBarListTile(
                          leading: IconButton(
                            color: theme.colorScheme.onSurfaceVariant,
                            icon: const Icon(Icons.close),
                            tooltip: L10n.of(context).close,
                            onPressed: () {
                              controller.discardScrollUpBannerEventId();
                              controller.setReadMarker();
                            },
                          ),
                          title: L10n.of(context).jumpToLastReadMessage,
                          trailing: TextButton(
                            onPressed: () {
                              controller.scrollToEventId(
                                scrollUpBannerEventId,
                              );
                              controller.discardScrollUpBannerEventId();
                            },
                            child: Text(L10n.of(context).jump),
                          ),
                        ),
                    ],
                  ),
                ),
              ),
              // #Pangea
              // floatingActionButtonLocation:
              //     FloatingActionButtonLocation.miniCenterFloat,
              // floatingActionButton: controller.showScrollDownButton &&
              //         controller.selectedEvents.isEmpty
              //     ? Padding(
              //         padding: const EdgeInsets.only(bottom: 56.0),
              //         child: FloatingActionButton(
              //           onPressed: controller.scrollDown,
              //           heroTag: null,
              //           mini: true,
              //           backgroundColor: theme.colorScheme.surface,
              //           foregroundColor: theme.colorScheme.onSurface,
              //           child: const Icon(Icons.arrow_downward_outlined),
              //         ),
              //       )
              //     : null,
              // body: DropTarget(
              //   onDragDone: controller.onDragDone,
              //   onDragEntered: controller.onDragEntered,
              //   onDragExited: controller.onDragExited,
              //   child: Stack(
              body: Stack(
                // Pangea#
                children: <Widget>[
                  if (accountConfig.wallpaperUrl != null)
                    Opacity(
                      opacity: accountConfig.wallpaperOpacity ?? 0.5,
                      child: ImageFiltered(
                        imageFilter: ui.ImageFilter.blur(
                          sigmaX: accountConfig.wallpaperBlur ?? 0.0,
                          sigmaY: accountConfig.wallpaperBlur ?? 0.0,
                        ),
                        child: MxcImage(
                          cacheKey: accountConfig.wallpaperUrl.toString(),
                          uri: accountConfig.wallpaperUrl,
                          fit: BoxFit.cover,
                          height: MediaQuery.of(context).size.height,
                          width: MediaQuery.of(context).size.width,
                          isThumbnail: false,
                          placeholder: (_) => Container(),
                        ),
                      ),
                    ),
                  SafeArea(
                    // #Pangea
                    // child: Column(
                    child: Stack(
                      children: [
                        Column(
                          // Pangea#
                          children: <Widget>[
                            Expanded(
                              child: GestureDetector(
                                onTap: controller.clearSingleSelectedEvent,
                                child: ChatEventList(controller: controller),
                              ),
                            ),
                            // #Pangea
                            // if (controller.showScrollDownButton)
                            if (controller.showScrollDownButton &&
                                !controller.room.showActivityFinished)
                              // Pangea#
                              Divider(
                                height: 1,
                                color: theme.dividerColor,
                              ),
                            if (controller.room.isExtinct)
                              Container(
                                margin: EdgeInsets.all(bottomSheetPadding),
                                width: double.infinity,
                                child: ElevatedButton.icon(
                                  icon: const Icon(Icons.chevron_right),
                                  label: Text(L10n.of(context).enterNewChat),
                                  onPressed: controller.goToNewRoomAction,
                                ),
                              )
                            // #Pangea
                            // else if (controller.room.canSendDefaultMessages &&
                            //     controller.room.membership == Membership.join)
                            else if (controller.room.canSendDefaultMessages &&
                                controller.room.membership == Membership.join &&
                                !controller.room.showActivityFinished)
                              // Pangea#
                              Container(
                                margin: EdgeInsets.all(bottomSheetPadding),
                                constraints: const BoxConstraints(
                                  maxWidth: FluffyThemes.maxTimelineWidth,
                                ),
                                alignment: Alignment.center,
                                child: Material(
                                  clipBehavior: Clip.hardEdge,
                                  color: controller.selectedEvents.isNotEmpty
                                      ? theme.colorScheme.tertiaryContainer
                                      : theme.colorScheme.surfaceContainerHigh,
                                  borderRadius: const BorderRadius.all(
                                    Radius.circular(24),
                                  ),
                                  child: controller.room.isAbandonedDMRoom ==
                                          true
                                      ? Row(
                                          mainAxisAlignment:
                                              MainAxisAlignment.spaceEvenly,
                                          children: [
                                            TextButton.icon(
                                              style: TextButton.styleFrom(
                                                padding: const EdgeInsets.all(
                                                  16,
                                                ),
                                                foregroundColor:
                                                    theme.colorScheme.error,
                                              ),
                                              icon: const Icon(
                                                Icons.archive_outlined,
                                              ),
                                              onPressed: controller.leaveChat,
                                              label: Text(
                                                L10n.of(context).leave,
                                              ),
                                            ),
                                            TextButton.icon(
                                              style: TextButton.styleFrom(
                                                padding: const EdgeInsets.all(
                                                  16,
                                                ),
                                              ),
                                              icon: const Icon(
                                                Icons.forum_outlined,
                                              ),
                                              onPressed:
                                                  controller.recreateChat,
                                              label: Text(
                                                L10n.of(context).reopenChat,
                                              ),
                                            ),
                                          ],
                                        )
                                      // #Pangea
                                      : null,
                                  // : Column(
                                  //     mainAxisSize: MainAxisSize.min,
                                  //     children: [
                                  //       ReplyDisplay(controller),
                                  //       ChatInputRow(controller),
                                  //       ChatEmojiPicker(controller),
                                  //     ],
                                  //   ),
                                  // Pangea#
                                ),
                              ),
                            // #Pangea
                            // Keep messages above minimum input bar height
                            if (!controller.room.isAbandonedDMRoom &&
                                controller.room.canSendDefaultMessages &&
                                controller.room.membership == Membership.join &&
                                (controller.room.activityPlan == null ||
                                    !controller.room.showActivityChatUI ||
                                    controller.room.isActiveInActivity))
                              AnimatedSize(
                                duration: const Duration(milliseconds: 200),
                                child: SizedBox(
                                  height: controller.inputBarHeight,
                                ),
                              ),
                            if (controller.room.activityIsFinished)
                              LoadActivitySummaryWidget(room: controller.room),
                            ActivityFinishedStatusMessage(
                              controller: controller,
                            ),
                            // Pangea#
                          ],
                        ),
                        // #Pangea
                        ChatViewBackground(controller.choreographer),
                        if (!controller.room.isAbandonedDMRoom &&
                            controller.room.canSendDefaultMessages &&
                            controller.room.membership == Membership.join &&
                            (controller.room.activityPlan == null ||
                                !controller.room.showActivityChatUI ||
                                controller.room.isActiveInActivity))
                          Positioned(
                            left: 0,
                            right: 0,
                            bottom: 16,
                            child: Column(
                              mainAxisSize: MainAxisSize.min,
                              crossAxisAlignment: CrossAxisAlignment.center,
                              children: [
                                ChatInputBarHeader(
                                  controller: controller,
                                  padding: bottomSheetPadding,
                                ),
                                ChatInputBar(
                                  controller: controller,
                                  padding: bottomSheetPadding,
                                ),
                              ],
                            ),
                          ),
                        ActivityPinnedMessage(controller),
                        // Pangea#
                      ],
                    ),
                  ),
                  // #Pangea
                  // if (controller.dragging)
                  //   Container(
                  //     color: theme.scaffoldBackgroundColor.withAlpha(230),
                  //     alignment: Alignment.center,
                  //     child: const Icon(
                  //       Icons.upload_outlined,
                  //       size: 100,
                  //     ),
                  //   ),
                  // Pangea#
                ],
              ),
            );
          },
        ),
      ),
    );
  }
}