import 'package:cached_network_image/cached_network_image.dart';
import 'package:chat/configs/app_colors.dart';
import 'package:chat/views/moments/index/widgets/media_preview.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';

class GridMedia extends StatelessWidget {
  final List<String>? mediaList;

  const GridMedia(this.mediaList, {Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    if (mediaList?.length == 1) {
      return ConstrainedBox(
        constraints: BoxConstraints(
          maxHeight: Get.width * 0.5,
          maxWidth: Get.width * 0.5,
          minHeight: 50,
          minWidth: 50,
        ),
        child: mediaList!.first.split('?').first.isImageFileName
            ? imageWidget(mediaList![0], 0)
            : videoWidget(mediaList![0], 0),
      );
    } else if (mediaList?.length == 2 || mediaList?.length == 4) {
      return GridView.builder(
        padding: EdgeInsets.zero,
        shrinkWrap: true,
        physics: const NeverScrollableScrollPhysics(),
        gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: 2,
          mainAxisSpacing: 8,
          crossAxisSpacing: 8,
          childAspectRatio: 1,
        ),
        itemCount: mediaList?.length,
        itemBuilder: (context, index) {
          final source = mediaList![index];
          if (source.split('?').first.isImageFileName) {
            return imageWidget(source, index);
          }
          return videoWidget(source, index);
        },
      );
    } else {
      return GridView.builder(
        padding: EdgeInsets.zero,
        shrinkWrap: true,
        physics: const NeverScrollableScrollPhysics(),
        gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: 3,
          mainAxisSpacing: 8,
          crossAxisSpacing: 8,
          childAspectRatio: 1,
        ),
        itemCount: mediaList?.length ?? 0,
        itemBuilder: (context, index) {
          final source = mediaList![index];
          if (source.split('?').first.isImageFileName) {
            return imageWidget(source, index);
          }
          return videoWidget(source, index);
        },
      );
    }
  }

  Widget videoWidget(String sourse, int index) {
    return GestureDetector(
      onTap: () {
        pushToPreview(index);
      },
      child: const ColoredBox(
        color: AppColors.black,
        child: Center(
          child: ClipOval(
            child: ColoredBox(
              color: AppColors.white,
              child: SizedBox.square(
                dimension: 30,
                child: Icon(Icons.play_arrow),
              ),
            ),
          ),
        ),
      ),

      // ignore: todo
      // TODO: 缩略图太耗流量
      // child: FutureBuilder<Uint8List?>(
      //   // future: getVideoThumbnail(sourse),
      //   builder: (context, snapshot) {
      //     if (snapshot.data == null) {
      //       return Container(color: Colors.white);
      //     } else {
      //       return DecoratedBox(
      //         decoration: BoxDecoration(
      //           image: DecorationImage(
      //             image: MemoryImage(snapshot.data!),
      //             fit: BoxFit.cover,
      //           ),
      //         ),
      //         child: const Center(
      //           child: Icon(
      //             Icons.play_arrow_rounded,
      //             color: Colors.white,
      //             size: 40,
      //           ),
      //         ),
      //       );
      //     }
      //   },
      // ),
    );
  }

  Widget imageWidget(String source, int index) {
    return GestureDetector(
      onTap: () {
        pushToPreview(index);
      },
      child: ClipRRect(
        borderRadius: BorderRadius.circular(4),
        child: CachedNetworkImage(
          imageUrl: source,
          alignment: Alignment.center,
          fit: BoxFit.cover,
        ),
      ),
    );
  }

  void pushToPreview(int index) {
    Get.dialog(
      MomentMediaPreview(
        mediaSourceList: mediaList!,
        initialPage: index,
      ),
      useSafeArea: false,
    );
  }
}