import 'dart:io';

import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:immich_mobile/extensions/asset_extensions.dart';
import 'package:immich_mobile/extensions/build_context_extensions.dart';
import 'package:immich_mobile/extensions/duration_extensions.dart';
import 'package:immich_mobile/modules/asset_viewer/ui/description_input.dart';
import 'package:immich_mobile/modules/map/ui/map_thumbnail.dart';
import 'package:immich_mobile/shared/models/asset.dart';
import 'package:immich_mobile/shared/providers/asset.provider.dart';
import 'package:immich_mobile/shared/ui/drag_sheet.dart';
import 'package:immich_mobile/utils/selection_handlers.dart';
import 'package:latlong2/latlong.dart';
import 'package:immich_mobile/utils/bytes_units.dart';
import 'package:url_launcher/url_launcher.dart';

class ExifBottomSheet extends HookConsumerWidget {
  final Asset asset;

  const ExifBottomSheet({Key? key, required this.asset}) : super(key: key);

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final assetWithExif = ref.watch(assetDetailProvider(asset));
    final exifInfo = (assetWithExif.value ?? asset).exifInfo;
    var textColor = context.isDarkTheme ? Colors.white : Colors.black;

    bool hasCoordinates() =>
        exifInfo != null &&
        exifInfo.latitude != null &&
        exifInfo.longitude != null &&
        exifInfo.latitude != 0 &&
        exifInfo.longitude != 0;

    String formattedDateTime() {
      final (dt, timeZone) =
          (assetWithExif.value ?? asset).getTZAdjustedTimeAndOffset();
      final date = DateFormat.yMMMEd().format(dt);
      final time = DateFormat.jm().format(dt);

      return '$date • $time GMT${timeZone.formatAsOffset()}';
    }

    Future<Uri?> createCoordinatesUri() async {
      if (!hasCoordinates()) {
        return null;
      }

      final double latitude = exifInfo!.latitude!;
      final double longitude = exifInfo.longitude!;

      const zoomLevel = 16;

      if (Platform.isAndroid) {
        Uri uri = Uri(
          scheme: 'geo',
          host: '$latitude,$longitude',
          queryParameters: {
            'z': '$zoomLevel',
            'q': '$latitude,$longitude($formattedDateTime)',
          },
        );
        if (await canLaunchUrl(uri)) {
          return uri;
        }
      } else if (Platform.isIOS) {
        var params = {
          'll': '$latitude,$longitude',
          'q': formattedDateTime,
          'z': '$zoomLevel',
        };
        Uri uri = Uri.https('maps.apple.com', '/', params);
        if (await canLaunchUrl(uri)) {
          return uri;
        }
      }

      return Uri(
        scheme: 'https',
        host: 'openstreetmap.org',
        queryParameters: {'mlat': '$latitude', 'mlon': '$longitude'},
        fragment: 'map=$zoomLevel/$latitude/$longitude',
      );
    }

    buildMap() {
      return Padding(
        padding: const EdgeInsets.symmetric(vertical: 16.0),
        child: LayoutBuilder(
          builder: (context, constraints) {
            return MapThumbnail(
              showAttribution: false,
              coords: LatLng(
                exifInfo?.latitude ?? 0,
                exifInfo?.longitude ?? 0,
              ),
              height: 150,
              width: constraints.maxWidth,
              zoom: 12.0,
              markers: [
                Marker(
                  anchorPos: AnchorPos.align(AnchorAlign.top),
                  point: LatLng(
                    exifInfo?.latitude ?? 0,
                    exifInfo?.longitude ?? 0,
                  ),
                  builder: (ctx) => const Image(
                    image: AssetImage('assets/location-pin.png'),
                  ),
                ),
              ],
              onTap: (tapPosition, latLong) async {
                Uri? uri = await createCoordinatesUri();

                if (uri == null) {
                  return;
                }

                debugPrint('Opening Map Uri: $uri');
                launchUrl(uri);
              },
            );
          },
        ),
      );
    }

    buildSizeText(Asset a) {
      String resolution = a.width != null && a.height != null
          ? "${a.height} x ${a.width}  "
          : "";
      String fileSize = a.exifInfo?.fileSize != null
          ? formatBytes(a.exifInfo!.fileSize!)
          : "";
      String text = resolution + fileSize;
      return text.isNotEmpty ? text : null;
    }

    buildDragHeader() {
      return const Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          SizedBox(height: 12),
          Align(
            alignment: Alignment.center,
            child: CustomDraggingHandle(),
          ),
          SizedBox(height: 12),
        ],
      );
    }

    buildLocation() {
      // Guard no lat/lng
      if (!hasCoordinates()) {
        return asset.isRemote
            ? ListTile(
                minLeadingWidth: 0,
                contentPadding: const EdgeInsets.all(0),
                leading: const Icon(Icons.location_on),
                title: Text(
                  "exif_bottom_sheet_location_add",
                  style: context.textTheme.bodyMedium?.copyWith(
                    fontWeight: FontWeight.w600,
                    color: context.primaryColor,
                  ),
                ).tr(),
                onTap: () => handleEditLocation(
                  ref,
                  context,
                  [assetWithExif.value ?? asset],
                ),
              )
            : const SizedBox.shrink();
      }

      return Column(
        children: [
          // Location
          Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Text(
                    "exif_bottom_sheet_location",
                    style: context.textTheme.labelMedium?.copyWith(
                      color:
                          context.textTheme.labelMedium?.color?.withAlpha(200),
                      fontWeight: FontWeight.w600,
                    ),
                  ).tr(),
                  if (asset.isRemote)
                    IconButton(
                      onPressed: () => handleEditLocation(
                        ref,
                        context,
                        [assetWithExif.value ?? asset],
                      ),
                      icon: const Icon(Icons.edit_outlined),
                      iconSize: 20,
                    ),
                ],
              ),
              buildMap(),
              RichText(
                text: TextSpan(
                  style: context.textTheme.labelLarge,
                  children: [
                    if (exifInfo != null && exifInfo.city != null)
                      TextSpan(
                        text: exifInfo.city,
                      ),
                    if (exifInfo != null &&
                        exifInfo.city != null &&
                        exifInfo.state != null)
                      const TextSpan(
                        text: ", ",
                      ),
                    if (exifInfo != null && exifInfo.state != null)
                      TextSpan(
                        text: "${exifInfo.state}",
                      ),
                  ],
                ),
              ),
              Text(
                "${exifInfo!.latitude!.toStringAsFixed(4)}, ${exifInfo.longitude!.toStringAsFixed(4)}",
                style: context.textTheme.labelMedium?.copyWith(
                  color: context.textTheme.labelMedium?.color?.withAlpha(150),
                ),
              ),
            ],
          ),
        ],
      );
    }

    buildDate() {
      return Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text(
            formattedDateTime(),
            style: const TextStyle(
              fontWeight: FontWeight.bold,
              fontSize: 14,
            ),
          ),
          if (asset.isRemote)
            IconButton(
              onPressed: () => handleEditDateTime(
                ref,
                context,
                [assetWithExif.value ?? asset],
              ),
              icon: const Icon(Icons.edit_outlined),
              iconSize: 20,
            ),
        ],
      );
    }

    buildImageProperties() {
      // Helper to create the ListTile and avoid repeating code
      createImagePropertiesListStyle(title, subtitle) => ListTile(
            contentPadding: const EdgeInsets.all(0),
            dense: true,
            leading: Icon(
              Icons.image,
              color: textColor.withAlpha(200),
            ),
            titleAlignment: ListTileTitleAlignment.center,
            title: Text(
              title,
              style: context.textTheme.labelLarge,
            ),
            subtitle: subtitle,
          );

      final imgSizeString = buildSizeText(asset);

      if (imgSizeString == null && asset.fileName.isNotEmpty) {
        // There is only filename
        return createImagePropertiesListStyle(
          asset.fileName,
          null,
        );
      } else if (imgSizeString != null && asset.fileName.isNotEmpty) {
        // There is both filename and size information
        return createImagePropertiesListStyle(
          asset.fileName,
          Text(imgSizeString, style: context.textTheme.bodySmall),
        );
      } else if (imgSizeString != null && asset.fileName.isEmpty) {
        // There is only size information
        return createImagePropertiesListStyle(
          imgSizeString,
          null,
        );
      }
    }

    buildDetail() {
      final imgProperties = buildImageProperties();

      // There are no details
      if (imgProperties == null &&
          (exifInfo == null || exifInfo.make == null)) {
        return Container();
      }

      return Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Padding(
            padding: const EdgeInsets.only(bottom: 8.0),
            child: Text(
              "exif_bottom_sheet_details",
              style: context.textTheme.labelMedium?.copyWith(
                color: context.textTheme.labelMedium?.color?.withAlpha(200),
                fontWeight: FontWeight.w600,
              ),
            ).tr(),
          ),
          if (imgProperties != null) imgProperties,
          if (exifInfo?.make != null)
            ListTile(
              contentPadding: const EdgeInsets.all(0),
              dense: true,
              leading: Icon(
                Icons.camera,
                color: textColor.withAlpha(200),
              ),
              title: Text(
                "${exifInfo!.make} ${exifInfo.model}",
                style: context.textTheme.labelLarge,
              ),
              subtitle: exifInfo.f != null ||
                      exifInfo.exposureSeconds != null ||
                      exifInfo.mm != null ||
                      exifInfo.iso != null
                  ? Text(
                      "ƒ/${exifInfo.fNumber}   ${exifInfo.exposureTime}   ${exifInfo.focalLength} mm   ISO ${exifInfo.iso ?? ''} ",
                      style: context.textTheme.bodySmall,
                    )
                  : null,
            ),
        ],
      );
    }

    return GestureDetector(
      onTap: () {
        // FocusScope.of(context).unfocus();
      },
      child: SingleChildScrollView(
        child: Card(
          shape: const RoundedRectangleBorder(
            borderRadius: BorderRadius.only(
              topLeft: Radius.circular(15),
              topRight: Radius.circular(15),
            ),
          ),
          margin: const EdgeInsets.all(0),
          child: Container(
            margin: const EdgeInsets.symmetric(horizontal: 16.0),
            child: LayoutBuilder(
              builder: (context, constraints) {
                if (constraints.maxWidth > 600) {
                  // Two column
                  return Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 12.0),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.stretch,
                      children: [
                        buildDragHeader(),
                        buildDate(),
                        if (asset.isRemote) DescriptionInput(asset: asset),
                        Row(
                          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Flexible(
                              flex: hasCoordinates() ? 5 : 0,
                              child: Padding(
                                padding: const EdgeInsets.only(right: 8.0),
                                child: buildLocation(),
                              ),
                            ),
                            Flexible(
                              flex: 5,
                              child: Padding(
                                padding: const EdgeInsets.only(left: 8.0),
                                child: buildDetail(),
                              ),
                            ),
                          ],
                        ),
                        const SizedBox(height: 50),
                      ],
                    ),
                  );
                }

                // One column
                return Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: [
                    buildDragHeader(),
                    buildDate(),
                    assetWithExif.when(
                      data: (data) => DescriptionInput(asset: data),
                      error: (error, stackTrace) => Icon(
                        Icons.image_not_supported_outlined,
                        color: context.primaryColor,
                      ),
                      loading: () => const SizedBox(
                        width: 75,
                        height: 75,
                        child: CircularProgressIndicator.adaptive(),
                      ),
                    ),
                    buildLocation(),
                    SizedBox(height: hasCoordinates() ? 16.0 : 6.0),
                    buildDetail(),
                    const SizedBox(height: 50),
                  ],
                );
              },
            ),
          ),
        ),
      ),
    );
  }
}