import 'package:auto_route/auto_route.dart';
import 'package:collection/collection.dart';
import 'package:flutter_form_builder/flutter_form_builder.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:form_builder_validators/form_builder_validators.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:shadcn_flutter/shadcn_flutter.dart';
import 'package:skeletonizer/skeletonizer.dart';
import 'package:spotube/collections/spotube_icons.dart';
import 'package:spotube/components/form/text_form_field.dart';
import 'package:spotube/components/titlebar/titlebar.dart';
import 'package:spotube/models/metadata/metadata.dart';
import 'package:spotube/modules/metadata_plugins/installed_plugin.dart';
import 'package:spotube/modules/metadata_plugins/plugin_repository.dart';
import 'package:spotube/provider/metadata_plugin/core/repositories.dart';
import 'package:spotube/provider/metadata_plugin/metadata_plugin_provider.dart';
import 'package:file_picker/file_picker.dart';
import 'package:spotube/provider/metadata_plugin/utils/common.dart';
import 'package:spotube/utils/platform.dart';
import 'package:very_good_infinite_list/very_good_infinite_list.dart';
import 'package:sliver_tools/sliver_tools.dart';

@RoutePage()
class SettingsMetadataProviderPage extends HookConsumerWidget {
  const SettingsMetadataProviderPage({super.key});

  @override
  Widget build(BuildContext context, ref) {
    final formKey = useMemoized(() => GlobalKey<FormBuilderState>(), []);

    final plugins = ref.watch(metadataPluginsProvider);
    final pluginsNotifier = ref.watch(metadataPluginsProvider.notifier);

    final pluginReposSnapshot = ref.watch(metadataPluginRepositoriesProvider);
    final pluginReposNotifier =
        ref.watch(metadataPluginRepositoriesProvider.notifier);

    final pluginRepos = useMemoized(
      () {
        final installedPluginIds = plugins.asData?.value.plugins
                .map((e) => e.repository)
                .nonNulls
                .toList() ??
            [];

        final pluginRepos = pluginReposSnapshot.asData?.value.items ?? [];
        if (installedPluginIds.isEmpty) return pluginRepos;
        return pluginRepos
            .whereNot((repo) => installedPluginIds.contains(repo.repoUrl))
            .toList();
      },
      [plugins.asData?.value.plugins, pluginReposSnapshot.asData?.value],
    );

    return SafeArea(
      bottom: false,
      child: Scaffold(
        headers: const [
          TitleBar(
            title: Text("Metadata provider plugin"),
          )
        ],
        child: Padding(
          padding: const EdgeInsets.all(8),
          child: CustomScrollView(
            slivers: [
              SliverToBoxAdapter(
                child: Row(
                  spacing: 8,
                  children: [
                    Expanded(
                      child: FormBuilder(
                        key: formKey,
                        child: TextFormBuilderField(
                          name: "plugin_url",
                          validator: FormBuilderValidators.url(
                              protocols: ["http", "https"]),
                          placeholder: const Text(
                            "Add GitHub/Codeberg URL to plugin repository "
                            "or direct link to .smplug file",
                          ),
                        ),
                      ),
                    ),
                    Tooltip(
                      tooltip: const TooltipContainer(
                        child: Text("Download and install plugin from url"),
                      ).call,
                      child: IconButton.secondary(
                        icon: const Icon(SpotubeIcons.download),
                        onPressed: () async {
                          if (formKey.currentState?.saveAndValidate() ??
                              false) {
                            final url = formKey.currentState
                                ?.fields["plugin_url"]?.value as String;

                            if (url.isNotEmpty) {
                              final pluginConfig = await pluginsNotifier
                                  .downloadAndCachePlugin(url);

                              await pluginsNotifier.addPlugin(pluginConfig);
                            }
                          }
                        },
                      ),
                    ),
                    Tooltip(
                      tooltip: const TooltipContainer(
                        child: Text("Upload plugin from file"),
                      ).call,
                      child: IconButton.primary(
                        icon: const Icon(SpotubeIcons.upload),
                        onPressed: () async {
                          final result = await FilePicker.platform.pickFiles(
                            type: kIsAndroid ? FileType.any : FileType.custom,
                            allowedExtensions: kIsAndroid ? [] : ["smplug"],
                            withData: true,
                          );

                          if (result == null) return;

                          final file = result.files.first;

                          if (file.bytes == null) return;

                          final pluginConfig = await pluginsNotifier
                              .extractPluginArchive(file.bytes!);
                          await pluginsNotifier.addPlugin(pluginConfig);
                        },
                      ),
                    ),
                  ],
                ),
              ),
              const SliverGap(12),
              if (plugins.asData?.value.plugins.isNotEmpty ?? false)
                SliverToBoxAdapter(
                  child: Row(
                    children: [
                      const Gap(8),
                      const Text("Installed").h4,
                      const Gap(8),
                      const Expanded(child: Divider()),
                      const Gap(8),
                    ],
                  ),
                ),
              const SliverGap(20),
              SliverList.separated(
                itemCount: plugins.asData?.value.plugins.length ?? 0,
                separatorBuilder: (context, index) => const Gap(12),
                itemBuilder: (context, index) {
                  final plugin = plugins.asData!.value.plugins[index];
                  final isDefault =
                      plugins.asData!.value.defaultPlugin == index;
                  return MetadataInstalledPluginItem(
                    plugin: plugin,
                    isDefault: isDefault,
                  );
                },
              ),
              const SliverGap(12),
              SliverToBoxAdapter(
                child: Row(
                  children: [
                    const Gap(8),
                    const Text("Available plugins").h4,
                    const Gap(8),
                    const Expanded(child: Divider()),
                    const Gap(8),
                  ],
                ),
              ),
              const SliverGap(12),
              SliverInfiniteList(
                isLoading: pluginReposSnapshot.isLoading &&
                    !pluginReposSnapshot.isLoadingNextPage,
                itemCount: pluginRepos.length,
                onFetchData: pluginReposNotifier.fetchMore,
                loadingBuilder: (context) {
                  return Skeletonizer(
                    enabled: true,
                    child: MetadataPluginRepositoryItem(
                      pluginRepo: MetadataPluginRepository(
                        name: "Loading...",
                        description: "Loading...",
                        repoUrl: "",
                        owner: "",
                      ),
                    ),
                  );
                },
                itemBuilder: (context, index) {
                  final pluginRepo = pluginRepos[index];

                  return MetadataPluginRepositoryItem(
                    pluginRepo: pluginRepo,
                  );
                },
              ),
              SliverCrossAxisConstrained(
                maxCrossAxisExtent: 720,
                child: SliverFillRemaining(
                  hasScrollBody: false,
                  child: Container(
                    alignment: Alignment.bottomCenter,
                    margin: const EdgeInsets.only(bottom: 20),
                    child: SafeArea(
                      child: Card(
                        child: Column(
                          mainAxisSize: MainAxisSize.min,
                          crossAxisAlignment: CrossAxisAlignment.start,
                          spacing: 12,
                          children: [
                            Row(
                              spacing: 8,
                              children: [
                                const Icon(SpotubeIcons.warning, size: 16),
                                const Text(
                                  "Disclaimer",
                                  style: TextStyle(fontWeight: FontWeight.bold),
                                ).bold,
                              ],
                            ),
                            const Text(
                              "The Spotube team does not hold any responsibility (including legal) for any \"Third-party\" plugins.\n"
                              "Please use them at your own risk. For any bugs/issues, please report them to the plugin repository."
                              "\n\n"
                              "If any \"Third-party\" plugin is breaking ToS/DMCA of any service/legal entity, "
                              "please ask the \"Third-party\" plugin author or the hosting platform .e.g GitHub/Codeberg to take action. "
                              "Above listed (\"Third-party\" labelled) are all public/community maintained plugins. We're not curating them, "
                              "so we cannot take any action on them.\n\n",
                            ).muted.xSmall,
                          ],
                        ),
                      ),
                    ),
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}