import 'dart:io' show Platform;

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

import 'package:auto_route/auto_route.dart';
import 'package:collection/collection.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import 'package:fladder/models/items/media_segments_model.dart';
import 'package:fladder/models/settings/home_settings_model.dart';
import 'package:fladder/models/settings/video_player_settings.dart';
import 'package:fladder/providers/user_provider.dart';
import 'package:fladder/providers/connectivity_provider.dart';
import 'package:fladder/providers/settings/video_player_settings_provider.dart';
import 'package:fladder/screens/settings/settings_list_tile.dart';
import 'package:fladder/screens/settings/settings_scaffold.dart';
import 'package:fladder/screens/settings/widgets/settings_label_divider.dart';
import 'package:fladder/screens/settings/widgets/settings_message_box.dart';
import 'package:fladder/screens/settings/widgets/subtitle_editor.dart';
import 'package:fladder/screens/shared/animated_fade_size.dart';
import 'package:fladder/screens/shared/input_fields.dart';
import 'package:fladder/screens/video_player/components/video_player_options_sheet.dart';
import 'package:fladder/util/adaptive_layout.dart';
import 'package:fladder/util/bitrate_helper.dart';
import 'package:fladder/util/box_fit_extension.dart';
import 'package:fladder/util/localization_helper.dart';
import 'package:fladder/util/option_dialogue.dart';
import 'package:fladder/widgets/shared/enum_selection.dart';

@RoutePage()
class PlayerSettingsPage extends ConsumerStatefulWidget {
  const PlayerSettingsPage({super.key});

  @override
  ConsumerState<ConsumerStatefulWidget> createState() => _PlayerSettingsPageState();
}

class _PlayerSettingsPageState extends ConsumerState<PlayerSettingsPage> {
  @override
  Widget build(BuildContext context) {
    final videoSettings = ref.watch(videoPlayerSettingsProvider);
    final provider = ref.read(videoPlayerSettingsProvider.notifier);
    final showBackground = AdaptiveLayout.viewSizeOf(context) != ViewSize.phone &&
        AdaptiveLayout.layoutModeOf(context) != LayoutMode.single;

    final connectionState = ref.watch(connectivityStatusProvider);

    return Card(
      elevation: showBackground ? 2 : 0,
      child: SettingsScaffold(
        label: context.localized.settingsPlayerTitle,
        items: [
          SettingsLabelDivider(label: context.localized.video),
          if (!AdaptiveLayout.of(context).isDesktop && !kIsWeb)
            SettingsListTile(
              label: Text(context.localized.videoScalingFillScreenTitle),
              subLabel: Text(context.localized.videoScalingFillScreenDesc),
              onTap: () => provider.setFillScreen(!videoSettings.fillScreen),
              trailing: Switch(
                value: videoSettings.fillScreen,
                onChanged: (value) => provider.setFillScreen(value),
              ),
            ),
          AnimatedFadeSize(
            child: videoSettings.fillScreen
                ? SettingsMessageBox(
                    context.localized.videoScalingFillScreenNotif,
                    messageType: MessageType.warning,
                  )
                : Container(),
          ),
          SettingsListTile(
            label: Text(context.localized.videoScalingFillScreenTitle),
            subLabel: Text(videoSettings.videoFit.label(context)),
            onTap: () => openMultiSelectOptions(
              context,
              label: context.localized.videoScalingFillScreenTitle,
              items: BoxFit.values,
              selected: [ref.read(videoPlayerSettingsProvider.select((value) => value.videoFit))],
              onChanged: (values) => ref.read(videoPlayerSettingsProvider.notifier).setFitType(values.first),
              itemBuilder: (type, selected, tap) => RadioListTile(
                groupValue: ref.read(videoPlayerSettingsProvider.select((value) => value.videoFit)),
                title: Text(type.label(context)),
                value: type,
                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
                contentPadding: EdgeInsets.zero,
                onChanged: (value) => tap(),
              ),
            ),
          ),
          SettingsListTile(
            label: _StatusIndicator(
              homeInternet: connectionState.homeInternet,
              label: Text(context.localized.homeStreamingQualityTitle),
            ),
            subLabel: Text(context.localized.homeStreamingQualityDesc),
            trailing: EnumBox(
              current: ref.watch(
                videoPlayerSettingsProvider.select((value) => value.maxHomeBitrate.label(context)),
              ),
              itemBuilder: (context) => Bitrate.values
                  .map(
                    (entry) => PopupMenuItem(
                      value: entry,
                      child: Text(entry.label(context)),
                      onTap: () => ref.read(videoPlayerSettingsProvider.notifier).state =
                          ref.read(videoPlayerSettingsProvider).copyWith(maxHomeBitrate: entry),
                    ),
                  )
                  .toList(),
            ),
          ),
          SettingsListTile(
            label: _StatusIndicator(
              homeInternet: !connectionState.homeInternet,
              label: Text(context.localized.internetStreamingQualityTitle),
            ),
            subLabel: Text(context.localized.internetStreamingQualityDesc),
            trailing: EnumBox(
              current: ref.watch(
                videoPlayerSettingsProvider.select((value) => value.maxInternetBitrate.label(context)),
              ),
              itemBuilder: (context) => Bitrate.values
                  .map(
                    (entry) => PopupMenuItem(
                      value: entry,
                      child: Text(entry.label(context)),
                      onTap: () => ref.read(videoPlayerSettingsProvider.notifier).state =
                          ref.read(videoPlayerSettingsProvider).copyWith(maxInternetBitrate: entry),
                    ),
                  )
                  .toList(),
            ),
          ),
          const Divider(),
          SettingsLabelDivider(label: context.localized.mediaSegmentActions),
          ...videoSettings.segmentSkipSettings.entries.sorted((a, b) => b.key.index.compareTo(a.key.index)).map(
                (entry) => Padding(
                  padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                  child: Row(
                    children: [
                      Expanded(
                        child: Text(
                          entry.key.label(context),
                          style: Theme.of(context).textTheme.titleLarge,
                        ),
                      ),
                      EnumBox(
                        current: entry.value.label(context),
                        itemBuilder: (context) => SegmentSkip.values
                            .map(
                              (value) => PopupMenuItem(
                                value: value,
                                child: Text(value.label(context)),
                                onTap: () {
                                  final newEntries = videoSettings.segmentSkipSettings.map(
                                      (key, currentValue) => MapEntry(key, key == entry.key ? value : currentValue));
                                  ref.read(videoPlayerSettingsProvider.notifier).state =
                                      ref.read(videoPlayerSettingsProvider).copyWith(segmentSkipSettings: newEntries);
                                },
                              ),
                            )
                            .toList(),
                      )
                    ],
                  ),
                ),
              ),
          SettingsLabelDivider(label: context.localized.playbackTrackSelection),
          SettingsListTile(
            label: Text(context.localized.rememberAudioSelections),
            subLabel: Text(context.localized.rememberAudioSelectionsDesc),
            onTap: () => ref.read(userProvider.notifier).setRememberAudioSelections(),
            trailing: Switch(
              value: ref.watch(userProvider.select(
                (value) => value?.userConfiguration?.rememberAudioSelections ?? true,
              )),
              onChanged: (_) => ref.read(userProvider.notifier).setRememberAudioSelections(),
            ),
          ),
          SettingsListTile(
            label: Text(context.localized.rememberSubtitleSelections),
            subLabel: Text(context.localized.rememberSubtitleSelectionsDesc),
            onTap: () => ref.read(userProvider.notifier).setRememberSubtitleSelections(),
            trailing: Switch(
              value: ref.watch(userProvider.select(
                (value) => value?.userConfiguration?.rememberSubtitleSelections ?? true,
              )),
              onChanged: (_) => ref.read(userProvider.notifier).setRememberSubtitleSelections(),
            ),
          ),
          const Divider(),
          SettingsLabelDivider(label: context.localized.advanced),
          if (PlayerOptions.available.length != 1)
            SettingsListTile(
              label: Text(context.localized.playerSettingsBackendTitle),
              subLabel: Text(context.localized.playerSettingsBackendDesc),
              trailing: Builder(builder: (context) {
                final wantedPlayer = ref.watch(videoPlayerSettingsProvider.select((value) => value.wantedPlayer));
                final currentPlayer = ref.watch(videoPlayerSettingsProvider.select((value) => value.playerOptions));
                return EnumBox(
                  current: currentPlayer == null
                      ? "${context.localized.defaultLabel} (${PlayerOptions.platformDefaults.label(context)})"
                      : wantedPlayer.label(context),
                  itemBuilder: (context) => [
                    PopupMenuItem(
                      value: null,
                      child:
                          Text("${context.localized.defaultLabel} (${PlayerOptions.platformDefaults.label(context)})"),
                      onTap: () => ref.read(videoPlayerSettingsProvider.notifier).state =
                          ref.read(videoPlayerSettingsProvider).copyWith(playerOptions: null),
                    ),
                    ...PlayerOptions.available.map(
                      (entry) => PopupMenuItem(
                        value: entry,
                        child: Text(entry.label(context)),
                        onTap: () => ref.read(videoPlayerSettingsProvider.notifier).state =
                            ref.read(videoPlayerSettingsProvider).copyWith(playerOptions: entry),
                      ),
                    )
                  ],
                );
              }),
            ),
          AnimatedFadeSize(
            child: switch (ref.read(videoPlayerSettingsProvider.select((value) => value.wantedPlayer))) {
              PlayerOptions.libMPV => Column(
                  children: [
                    SettingsListTile(
                      label: Text(context.localized.settingsPlayerVideoHWAccelTitle),
                      subLabel: Text(context.localized.settingsPlayerVideoHWAccelDesc),
                      onTap: () => provider.setHardwareAccel(!videoSettings.hardwareAccel),
                      trailing: Switch(
                        value: videoSettings.hardwareAccel,
                        onChanged: (value) => provider.setHardwareAccel(value),
                      ),
                    ),
                    if (!kIsWeb) ...[
                      SettingsListTile(
                        label: Text(context.localized.settingsPlayerNativeLibassAccelTitle),
                        subLabel: Text(context.localized.settingsPlayerNativeLibassAccelDesc),
                        onTap: () => provider.setUseLibass(!videoSettings.useLibass),
                        trailing: Switch(
                          value: videoSettings.useLibass,
                          onChanged: (value) => provider.setUseLibass(value),
                        ),
                      ),
                      AnimatedFadeSize(
                        child: videoSettings.useLibass && videoSettings.hardwareAccel && Platform.isAndroid
                            ? SettingsMessageBox(
                                context.localized.settingsPlayerMobileWarning,
                                messageType: MessageType.warning,
                              )
                            : Container(),
                      ),
                    ],
                    SettingsListTile(
                      label: Text(context.localized.settingsPlayerBufferSizeTitle),
                      subLabel: Text(context.localized.settingsPlayerBufferSizeDesc),
                      trailing: SizedBox(
                          width: 70,
                          child: IntInputField(
                            suffix: 'MB',
                            controller: TextEditingController(text: videoSettings.bufferSize.toString()),
                            onSubmitted: (value) {
                              if (value != null) {
                                provider.setBufferSize(value);
                              }
                            },
                          )),
                    ),
                    SettingsListTile(
                      label: Text(context.localized.settingsPlayerCustomSubtitlesTitle),
                      subLabel: Text(context.localized.settingsPlayerCustomSubtitlesDesc),
                      onTap: videoSettings.useLibass
                          ? null
                          : () {
                              showDialog(
                                context: context,
                                barrierDismissible: false,
                                useSafeArea: false,
                                builder: (context) => const SubtitleEditor(),
                              );
                            },
                    ),
                  ],
                ),
              _ => SettingsMessageBox(
                  messageType: MessageType.info,
                  "${context.localized.noVideoPlayerOptions}\n${context.localized.mdkExperimental}")
            },
          ),
          SettingsListTile(
            label: Text(context.localized.settingsAutoNextTitle),
            subLabel: Text(context.localized.settingsAutoNextDesc),
            trailing: EnumBox(
              current: ref.watch(
                videoPlayerSettingsProvider.select(
                  (value) => value.nextVideoType.label(context),
                ),
              ),
              itemBuilder: (context) => AutoNextType.values
                  .map(
                    (entry) => PopupMenuItem(
                      value: entry,
                      child: Text(entry.label(context)),
                      onTap: () => ref.read(videoPlayerSettingsProvider.notifier).state =
                          ref.read(videoPlayerSettingsProvider).copyWith(nextVideoType: entry),
                    ),
                  )
                  .toList(),
            ),
          ),
          AnimatedFadeSize(
            child: switch (ref.watch(videoPlayerSettingsProvider.select((value) => value.nextVideoType))) {
              AutoNextType.smart => SettingsMessageBox(AutoNextType.smart.desc(context)),
              AutoNextType.static => SettingsMessageBox(AutoNextType.static.desc(context)),
              _ => const SizedBox.shrink(),
            },
          ),
          if (!AdaptiveLayout.of(context).isDesktop && !kIsWeb)
            SettingsListTile(
              label: Text(context.localized.playerSettingsOrientationTitle),
              subLabel: Text(context.localized.playerSettingsOrientationDesc),
              onTap: () => showOrientationOptions(context, ref),
            ),
        ],
      ),
    );
  }
}

class _StatusIndicator extends StatelessWidget {
  final bool homeInternet;
  final Widget label;
  const _StatusIndicator({required this.homeInternet, required this.label});

  @override
  Widget build(BuildContext context) {
    return Row(
      crossAxisAlignment: CrossAxisAlignment.center,
      children: [
        if (homeInternet) ...[
          Container(
            width: 8,
            height: 8,
            decoration: const BoxDecoration(
              color: Colors.greenAccent,
              shape: BoxShape.circle,
            ),
          ),
          const SizedBox(width: 6),
        ],
        label,
      ],
    );
  }
}