ente/lib/ui/viewer/file/fading_bottom_bar.dart

import 'dart:io';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:photos/models/file.dart';
import 'package:photos/models/file_type.dart';
import 'package:photos/models/selected_files.dart';
import 'package:photos/models/trash_file.dart';
import 'package:photos/theme/colors.dart';
import 'package:photos/theme/ente_theme.dart';
import "package:photos/ui/actions/file/file_actions.dart";
import 'package:photos/ui/collection_action_sheet.dart';
import 'package:photos/utils/delete_file_util.dart';
import 'package:photos/utils/share_util.dart';

class FadingBottomBar extends StatefulWidget {
  final File file;
  final Function(File) onEditRequested;
  final Function(File) onFileRemoved;
  final bool showOnlyInfoButton;
  final int? userID;

  const FadingBottomBar(
    this.file,
    this.onEditRequested,
    this.showOnlyInfoButton, {
    required this.onFileRemoved,
    this.userID,
    Key? key,
  }) : super(key: key);

  @override
  FadingBottomBarState createState() => FadingBottomBarState();
}

class FadingBottomBarState extends State<FadingBottomBar> {
  bool _shouldHide = false;
  final GlobalKey shareButtonKey = GlobalKey();

  @override
  Widget build(BuildContext context) {
    return _getBottomBar();
  }

  void hide() {
    setState(() {
      _shouldHide = true;
    });
  }

  void show() {
    setState(() {
      _shouldHide = false;
    });
  }

  void safeRefresh() {
    if (mounted) {
      setState(() {});
    }
  }

  Widget _getBottomBar() {
    final List<Widget> children = [];
    final bool isOwnedByUser =
        widget.file.ownerID == null || widget.file.ownerID == widget.userID;
    children.add(
      Tooltip(
        message: "Info",
        child: Padding(
          padding: const EdgeInsets.only(top: 12, bottom: 12),
          child: IconButton(
            icon: Icon(
              Platform.isAndroid ? Icons.info_outline : CupertinoIcons.info,
              color: Colors.white,
            ),
            onPressed: () async {
              await _displayInfo(widget.file);
              safeRefresh(); //to instantly show the new caption if keypad is closed after pressing 'done' - here the caption will be updated before the bottom sheet is closed
              await Future.delayed(
                const Duration(milliseconds: 500),
              ); //Waiting for some time till the caption gets updated in db if the user closes the bottom sheet without pressing 'done'
              safeRefresh();
            },
          ),
        ),
      ),
    );
    if (widget.file is TrashFile) {
      _addTrashOptions(children);
    }

    if (!widget.showOnlyInfoButton && widget.file is! TrashFile) {
      if (widget.file.fileType == FileType.image ||
          widget.file.fileType == FileType.livePhoto) {
        children.add(
          Tooltip(
            message: "Edit",
            child: Padding(
              padding: const EdgeInsets.only(top: 12, bottom: 12),
              child: IconButton(
                icon: const Icon(
                  Icons.tune_outlined,
                  color: Colors.white,
                ),
                onPressed: () {
                  widget.onEditRequested(widget.file);
                },
              ),
            ),
          ),
        );
      }
      if (isOwnedByUser) {
        children.add(
          Tooltip(
            message: "Delete",
            child: Padding(
              padding: const EdgeInsets.only(top: 12, bottom: 12),
              child: IconButton(
                icon: Icon(
                  Platform.isAndroid
                      ? Icons.delete_outline
                      : CupertinoIcons.delete,
                  color: Colors.white,
                ),
                onPressed: () async {
                  await _showSingleFileDeleteSheet(widget.file);
                },
              ),
            ),
          ),
        );
      }
      children.add(
        Tooltip(
          message: "Share",
          child: Padding(
            padding: const EdgeInsets.only(top: 12, bottom: 12),
            child: IconButton(
              key: shareButtonKey,
              icon: Icon(
                Platform.isAndroid
                    ? Icons.share_outlined
                    : CupertinoIcons.share,
                color: Colors.white,
              ),
              onPressed: () {
                share(context, [widget.file], shareButtonKey: shareButtonKey);
              },
            ),
          ),
        ),
      );
    }
    final safeAreaBottomPadding = MediaQuery.of(context).padding.bottom * .5;
    return IgnorePointer(
      ignoring: _shouldHide,
      child: AnimatedOpacity(
        opacity: _shouldHide ? 0 : 1,
        duration: const Duration(milliseconds: 150),
        child: Align(
          alignment: Alignment.bottomCenter,
          child: Container(
            decoration: BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.topCenter,
                end: Alignment.bottomCenter,
                colors: [
                  Colors.transparent,
                  Colors.black.withOpacity(0.6),
                  Colors.black.withOpacity(0.72),
                ],
                stops: const [0, 0.8, 1],
              ),
            ),
            child: Padding(
              padding: EdgeInsets.only(bottom: safeAreaBottomPadding),
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  widget.file.caption?.isNotEmpty ?? false
                      ? Padding(
                          padding: const EdgeInsets.fromLTRB(
                            16,
                            28,
                            16,
                            12,
                          ),
                          child: Text(
                            widget.file.caption!,
                            overflow: TextOverflow.ellipsis,
                            maxLines: 4,
                            style: getEnteTextTheme(context)
                                .small
                                .copyWith(color: textBaseDark),
                            textAlign: TextAlign.center,
                          ),
                        )
                      : const SizedBox.shrink(),
                  Row(
                    mainAxisAlignment: MainAxisAlignment.spaceAround,
                    children: children,
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }

  Future<void> _showSingleFileDeleteSheet(File file) async {
    await showSingleFileDeleteSheet(
      context,
      file,
      onFileRemoved: widget.onFileRemoved,
    );
  }

  void _addTrashOptions(List<Widget> children) {
    children.add(
      Tooltip(
        message: "Restore",
        child: Padding(
          padding: const EdgeInsets.only(top: 12, bottom: 12),
          child: IconButton(
            icon: const Icon(
              Icons.restore_outlined,
              color: Colors.white,
            ),
            onPressed: () {
              final selectedFiles = SelectedFiles();
              selectedFiles.toggleSelection(widget.file);
              showCollectionActionSheet(
                context,
                selectedFiles: selectedFiles,
                actionType: CollectionActionType.restoreFiles,
              );
            },
          ),
        ),
      ),
    );

    children.add(
      Tooltip(
        message: "Delete",
        child: Padding(
          padding: const EdgeInsets.only(top: 12, bottom: 12),
          child: IconButton(
            icon: const Icon(
              Icons.delete_forever_outlined,
              color: Colors.white,
            ),
            onPressed: () async {
              final trashedFile = <TrashFile>[];
              trashedFile.add(widget.file as TrashFile);
              if (await deleteFromTrash(context, trashedFile) == true) {
                Navigator.pop(context);
              }
            },
          ),
        ),
      ),
    );
  }

  Future<void> _displayInfo(File file) async {
    await showInfoSheet(context, file);
  }
}