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

import 'package:linkdy/screens/bookmarks/provider/search_bookmarks.provider.dart';
import 'package:linkdy/screens/bookmarks/ui/bookmark_form_modal.dart';
import 'package:linkdy/screens/bookmarks/ui/bookmark_item.dart';
import 'package:linkdy/screens/bookmarks/ui/delete_bookmark_modal.dart';
import 'package:linkdy/widgets/enter_search_term_screen.dart';
import 'package:linkdy/widgets/no_data_screen.dart';
import 'package:linkdy/widgets/error_screen.dart';

import 'package:linkdy/constants/global_keys.dart';
import 'package:linkdy/constants/enums.dart';
import 'package:linkdy/providers/router.provider.dart';

import 'package:linkdy/config/sizes.dart';
import 'package:linkdy/i18n/strings.g.dart';

class SearchBookmarksModal extends ConsumerWidget {
  final bool fullscreen;

  const SearchBookmarksModal({
    super.key,
    required this.fullscreen,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    return ScaffoldMessenger(
      key: ScaffoldMessengerKeys.search,
      child: Dialog.fullscreen(
        child: LayoutBuilder(
          builder: (context, constraints) {
            if (constraints.maxWidth > Sizes.tabletBreakpoint) {
              return Row(
                children: [
                  const Expanded(flex: 2, child: _List(tabletMode: true)),
                  Expanded(
                    flex: 3,
                    child: Material(
                      color: Theme.of(context).colorScheme.primaryContainer.withOpacity(0.2),
                      child: Router.withConfig(config: ref.watch(searchBookmarksProvider).webViewRouter),
                    ),
                  ),
                ],
              );
            } else {
              return const _List(tabletMode: false);
            }
          },
        ),
      ),
    );
  }
}

class _List extends ConsumerWidget {
  final bool tabletMode;

  const _List({
    required this.tabletMode,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final provider = ref.watch(searchBookmarksProvider);

    final width = MediaQuery.of(context).size.width;

    bool scrollListener(ScrollUpdateNotification scrollNotification) {
      if (scrollNotification.metrics.extentAfter < 100 &&
          provider.loadingMore == false &&
          provider.bookmarks.length < provider.maxNumber) {
        ref.read(searchBookmarksProvider.notifier).setLoadingMore(true);
        ref.watch(fetchSearchBookmarksLoadMoreProvider);
      }
      return false;
    }

    return Scaffold(
      backgroundColor: Theme.of(context).colorScheme.primaryContainer.withOpacity(0.2),
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.primaryContainer.withOpacity(0),
        toolbarHeight: 68,
        leading: Padding(
          padding: const EdgeInsets.only(bottom: 8),
          child: BackButton(
            onPressed: () => ref.watch(routerProvider).pop(),
          ),
        ),
        titleSpacing: 0,
        title: Padding(
          padding: const EdgeInsets.only(bottom: 8, right: 16),
          child: ClipRRect(
            borderRadius: BorderRadius.circular(50),
            child: TextFormField(
              controller: ref.watch(searchBookmarksProvider).searchController,
              onChanged: (_) => ref.read(searchBookmarksProvider.notifier).notifyListeners(),
              onEditingComplete: () {
                FocusManager.instance.primaryFocus?.unfocus();
                ref.read(searchBookmarksProvider.notifier).setSearchTerm();
                ref.read(searchBookmarksProvider.notifier).setInitialLoadStatus(LoadStatus.loading);
                ref.read(fetchSearchBookmarksProvider(provider.limit));
              },
              autofocus: true,
              decoration: InputDecoration(
                hintText: t.bookmarks.search.searchBookmarks,
                prefixIcon: const Icon(Icons.search_rounded),
                border: InputBorder.none,
                filled: true,
                fillColor: Colors.grey.withOpacity(0.2),
                suffixIcon: ref.watch(searchBookmarksProvider).searchController.text != ""
                    ? IconButton(
                        onPressed: ref.read(searchBookmarksProvider.notifier).clearSearch,
                        icon: const Icon(
                          Icons.close_rounded,
                          size: 20,
                        ),
                        tooltip: t.bookmarks.search.clearSearch,
                      )
                    : null,
              ),
              textInputAction: TextInputAction.search,
            ),
          ),
        ),
      ),
      body: Builder(
        builder: (context) {
          if (provider.searchTerm == "") {
            return EnterSearchTermScreen(message: t.bookmarks.search.inputSearchTerm);
          }

          if (provider.inialLoadStatus == LoadStatus.loading) {
            return const Center(
              child: CircularProgressIndicator(),
            );
          }

          if (provider.inialLoadStatus == LoadStatus.error) {
            return ErrorScreen(
              error: t.bookmarks.search.cannotSearchError,
            );
          }

          if (provider.bookmarks.isEmpty) {
            return NoDataScreen(
              message: t.bookmarks.search.inputtedSearchTermNoResults,
            );
          }

          return NotificationListener(
            onNotification: scrollListener,
            child: ListView.builder(
              itemCount: provider.loadingMore ? provider.bookmarks.length + 1 : provider.bookmarks.length,
              itemBuilder: (context, index) {
                if (provider.loadingMore == true && index == provider.bookmarks.length) {
                  return const Padding(
                    padding: EdgeInsets.all(16),
                    child: Center(
                      child: CircularProgressIndicator(),
                    ),
                  );
                }
                return BookmarkItem(
                  bookmark: provider.bookmarks[index],
                  onSelect: (b) => ref.read(searchBookmarksProvider.notifier).selectBookmark(b, width),
                  onReadUnread: ref.read(searchBookmarksProvider.notifier).markAsReadUnread,
                  onDelete: (bookmark) => showDialog(
                    context: context,
                    builder: (context) => DeleteBookmarkModal(
                      bookmark: bookmark,
                      onDelete: ref.read(searchBookmarksProvider.notifier).deleteBookmark,
                    ),
                  ),
                  onArchiveUnarchive: ref.read(searchBookmarksProvider.notifier).archiveUnarchive,
                  onShareInternally: ref.read(searchBookmarksProvider.notifier).shareUnshare,
                  onEdit: (b) => openBookmarkFormModal(context: context, width: width, bookmark: b),
                  selected: provider.bookmarks[index] == provider.selectedBookmark,
                  tabletMode: tabletMode,
                );
              },
            ),
          );
        },
      ),
    );
  }
}