Initial commit

lib/features/documents/view/pages/document_details_page.dart

@@ -0,0 +1,418 @@
+import 'dart:io';
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_paperless_mobile/core/bloc/label_bloc_provider.dart';
+import 'package:flutter_paperless_mobile/core/logic/error_code_localization_mapper.dart';
+import 'package:flutter_paperless_mobile/core/model/error_message.dart';
+import 'package:flutter_paperless_mobile/core/widgets/highlighted_text.dart';
+import 'package:flutter_paperless_mobile/di_initializer.dart';
+import 'package:flutter_paperless_mobile/extensions/flutter_extensions.dart';
+import 'package:flutter_paperless_mobile/features/documents/bloc/documents_cubit.dart';
+import 'package:flutter_paperless_mobile/features/documents/bloc/documents_state.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/document.model.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/document_meta_data.model.dart';
+import 'package:flutter_paperless_mobile/features/documents/repository/document_repository.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/pages/document_edit_page.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/pages/document_view.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/delete_document_confirmation_dialog.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/document_preview.dart';
+import 'package:flutter_paperless_mobile/features/labels/correspondent/view/widgets/correspondent_widget.dart';
+import 'package:flutter_paperless_mobile/features/labels/document_type/view/widgets/document_type_widget.dart';
+import 'package:flutter_paperless_mobile/features/labels/storage_path/view/widgets/storage_path_widget.dart';
+import 'package:flutter_paperless_mobile/features/labels/tags/view/widgets/tags_widget.dart';
+import 'package:flutter_paperless_mobile/generated/l10n.dart';
+import 'package:flutter_paperless_mobile/util.dart';
+import 'package:intl/intl.dart';
+import 'package:path_provider/path_provider.dart';
+
+class DocumentDetailsPage extends StatefulWidget {
+  final int documentId;
+  const DocumentDetailsPage({
+    Key? key,
+    required this.documentId,
+  }) : super(key: key);
+
+  @override
+  State<DocumentDetailsPage> createState() => _DocumentDetailsPageState();
+}
+
+class _DocumentDetailsPageState extends State<DocumentDetailsPage> {
+  static final DateFormat _detailedDateFormat = DateFormat("MMM d, yyyy HH:mm:ss");
+
+  bool _isDownloadPending = false;
+  bool _isAssignAsnPending = false;
+
+  @override
+  Widget build(BuildContext context) {
+    return BlocBuilder<DocumentsCubit, DocumentsState>(
+      // buildWhen required because rebuild would happen after delete causing error.
+      buildWhen: (previous, current) {
+        return current.documents.where((element) => element.id == widget.documentId).isNotEmpty;
+      },
+      builder: (context, state) {
+        final document = state.documents.where((doc) => doc.id == widget.documentId).first;
+        return SafeArea(
+          bottom: true,
+          child: DefaultTabController(
+            length: 3,
+            child: Scaffold(
+              floatingActionButtonLocation: FloatingActionButtonLocation.endDocked,
+              floatingActionButton: FloatingActionButton(
+                child: const Icon(Icons.edit),
+                onPressed: () => _onEdit(document),
+              ),
+              bottomNavigationBar: BottomAppBar(
+                child: Row(
+                  mainAxisAlignment: MainAxisAlignment.start,
+                  children: [
+                    IconButton(
+                      icon: const Icon(Icons.delete),
+                      onPressed: () => _onDelete(document),
+                    ).padded(const EdgeInsets.symmetric(horizontal: 8.0)),
+                    IconButton(
+                      icon: const Icon(Icons.download),
+                      onPressed: null, //() => _onDownload(document), //TODO: FIX
+                    ),
+                    IconButton(
+                      icon: const Icon(Icons.open_in_new),
+                      onPressed: () => _onOpen(document),
+                    ).padded(const EdgeInsets.symmetric(horizontal: 8.0)),
+                  ],
+                ),
+              ),
+              body: NestedScrollView(
+                headerSliverBuilder: (context, innerBoxIsScrolled) => [
+                  SliverAppBar(
+                    leading: IconButton(
+                      icon: const Icon(
+                        Icons.arrow_back,
+                        color: Colors
+                            .black, //TODO: check if there is a way to dynamically determine color...
+                      ),
+                      onPressed: () => Navigator.pop(context),
+                    ),
+                    floating: true,
+                    pinned: true,
+                    expandedHeight: 200.0,
+                    flexibleSpace: DocumentPreview(
+                      id: document.id,
+                      fit: BoxFit.cover,
+                    ),
+                    bottom: ColoredTabBar(
+                      backgroundColor: Theme.of(context).colorScheme.primaryContainer,
+                      tabBar: TabBar(
+                        tabs: [
+                          Tab(
+                            child: Text(
+                              S.of(context).documentDetailsPageTabOverviewLabel,
+                              style: TextStyle(
+                                  color: Theme.of(context).colorScheme.onPrimaryContainer),
+                            ),
+                          ),
+                          Tab(
+                            child: Text(
+                              S.of(context).documentDetailsPageTabContentLabel,
+                              style: TextStyle(
+                                  color: Theme.of(context).colorScheme.onPrimaryContainer),
+                            ),
+                          ),
+                          Tab(
+                            child: Text(
+                              S.of(context).documentDetailsPageTabMetaDataLabel,
+                              style: TextStyle(
+                                  color: Theme.of(context).colorScheme.onPrimaryContainer),
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ),
+                ],
+                body: TabBarView(
+                  children: [
+                    _buildDocumentOverview(document, state.filter.titleAndContentMatchString),
+                    _buildDocumentContentView(document, state.filter.titleAndContentMatchString),
+                    _buildDocumentMetaDataView(document),
+                  ].padded(),
+                ),
+              ),
+            ),
+          ),
+        );
+      },
+    );
+  }
+
+  Widget _buildDocumentMetaDataView(DocumentModel document) {
+    return FutureBuilder<DocumentMetaData>(
+      future: getIt<DocumentRepository>().getMetaData(document),
+      builder: (context, snapshot) {
+        if (!snapshot.hasData) {
+          return const Center(child: CircularProgressIndicator());
+        }
+        final meta = snapshot.data!;
+        return ListView(
+          children: [
+            _DetailsItem.text(_detailedDateFormat.format(document.modified),
+                label: S.of(context).documentModifiedPropertyLabel, context: context),
+            _separator(),
+            _DetailsItem.text(_detailedDateFormat.format(document.added),
+                label: S.of(context).documentAddedPropertyLabel, context: context),
+            _separator(),
+            _DetailsItem(
+              label: S.of(context).documentArchiveSerialNumberPropertyLongLabel,
+              content: document.archiveSerialNumber != null
+                  ? Text(document.archiveSerialNumber.toString())
+                  : OutlinedButton(
+                      child: Text(S.of(context).documentDetailsPageAssignAsnButtonLabel),
+                      onPressed: () => BlocProvider.of<DocumentsCubit>(context).assignAsn(document),
+                    ),
+            ),
+            _separator(),
+            _DetailsItem.text(
+              meta.mediaFilename,
+              context: context,
+              label: S.of(context).documentMetaDataMediaFilenamePropertyLabel,
+            ),
+            _separator(),
+            _DetailsItem.text(
+              meta.originalChecksum,
+              context: context,
+              label: S.of(context).documentMetaDataChecksumLabel,
+            ),
+            _separator(),
+            _DetailsItem.text(formatBytes(meta.originalSize, 2),
+                label: S.of(context).documentMetaDataOriginalFileSizeLabel, context: context),
+            _separator(),
+            _DetailsItem.text(
+              meta.originalMimeType,
+              label: S.of(context).documentMetaDataOriginalMimeTypeLabel,
+              context: context,
+            ),
+            _separator(),
+          ],
+        );
+      },
+    );
+  }
+
+  Widget _buildDocumentContentView(DocumentModel document, String? match) {
+    return SingleChildScrollView(
+      child: _DetailsItem(
+        content: HighlightedText(
+          text: document.content ?? "",
+          highlights: match == null ? [] : match.split(" "),
+          style: Theme.of(context).textTheme.bodyText2,
+          caseSensitive: false,
+        ),
+        label: S.of(context).documentDetailsPageTabContentLabel,
+      ),
+    );
+  }
+
+  Widget _buildDocumentOverview(DocumentModel document, String? match) {
+    return ListView(
+      children: [
+        _DetailsItem(
+          content: HighlightedText(
+            text: document.title,
+            highlights: match?.split(" ") ?? <String>[],
+          ),
+          label: S.of(context).documentTitlePropertyLabel,
+        ),
+        _separator(),
+        _DetailsItem.text(
+          DateFormat.yMMMd(Localizations.localeOf(context).toLanguageTag())
+              .format(document.created),
+          context: context,
+          label: S.of(context).documentCreatedPropertyLabel,
+        ),
+        _separator(),
+        _DetailsItem(
+          content: DocumentTypeWidget(
+            documentTypeId: document.documentType,
+            afterSelected: () {
+              Navigator.pop(context);
+            },
+          ),
+          label: S.of(context).documentDocumentTypePropertyLabel,
+        ),
+        _separator(),
+        _DetailsItem(
+          label: S.of(context).documentCorrespondentPropertyLabel,
+          content: CorrespondentWidget(
+            correspondentId: document.correspondent,
+            afterSelected: () {
+              Navigator.pop(context);
+            },
+          ),
+        ),
+        _separator(),
+        _DetailsItem(
+          label: S.of(context).documentStoragePathPropertyLabel,
+          content: StoragePathWidget(
+            pathId: document.storagePath,
+            afterSelected: () {
+              Navigator.pop(context);
+            },
+          ),
+        ),
+        _separator(),
+        _DetailsItem(
+          label: S.of(context).documentTagsPropertyLabel,
+          content: Padding(
+            padding: const EdgeInsets.only(top: 8.0),
+            child: TagsWidget(
+              tagIds: document.tags,
+            ),
+          ),
+        ),
+        // _separator(),
+        // FutureBuilder<List<SimilarDocumentModel>>(
+        //     future: getIt<DocumentRepository>().findSimilar(document.id),
+        //     builder: (context, snapshot) {
+        //       if (!snapshot.hasData) {
+        //         return CircularProgressIndicator();
+        //       }
+        //       return ExpansionTile(
+        //         tilePadding: const EdgeInsets.symmetric(horizontal: 8.0),
+        //         title: Text(
+        //           S.of(context).documentDetailsPageSimilarDocumentsLabel,
+        //           style:
+        //               Theme.of(context).textTheme.headline5?.copyWith(fontWeight: FontWeight.bold),
+        //         ),
+        //         children: snapshot.data!
+        //             .map((e) => DocumentListItem(
+        //                 document: e,
+        //                 onTap: (doc) {},
+        //                 isSelected: false,
+        //                 isAtLeastOneSelected: false))
+        //             .toList(),
+        //       );
+        //     }),
+      ],
+    );
+  }
+
+  Widget _separator() {
+    return const SizedBox(height: 32.0);
+  }
+
+  void _onEdit(DocumentModel document) {
+    Navigator.push(
+      context,
+      MaterialPageRoute(
+        builder: (_) => LabelBlocProvider(
+          child: DocumentEditPage(document: document),
+        ),
+        maintainState: true,
+      ),
+    );
+  }
+
+  Future<void> _onDownload(DocumentModel document) async {
+    setState(() {
+      _isDownloadPending = true;
+    });
+    getIt<DocumentRepository>().download(document).then((bytes) async {
+      //FIXME: logic currently flawed, some error somewhere but cannot look into directory...
+      final dir = await getApplicationDocumentsDirectory();
+      final dirPath = dir.path + "/files/";
+      var filePath = dirPath + document.originalFileName;
+
+      if (File(filePath).existsSync()) {
+        final count = dir
+            .listSync()
+            .where((entity) => (entity.path.contains(document.originalFileName)))
+            .fold<int>(0, (previous, element) => previous + 1);
+        final extSeperationIdx = filePath.lastIndexOf(".");
+        filePath =
+            filePath.replaceRange(extSeperationIdx, extSeperationIdx + 1, " (${count + 1}).");
+      }
+      Directory(dirPath).createSync();
+      await File(filePath).writeAsBytes(bytes);
+      _isDownloadPending = false;
+      showSnackBar(context, "Document successfully downloaded to $filePath"); //TODO: INTL
+    });
+  }
+
+  Future<void> _onDelete(DocumentModel document) async {
+    showDialog(
+        context: context,
+        builder: (context) => DeleteDocumentConfirmationDialog(document: document)).then((delete) {
+      if (delete ?? false) {
+        BlocProvider.of<DocumentsCubit>(context).removeDocument(document).then((value) {
+          Navigator.pop(context);
+          showSnackBar(context, S.of(context).documentDeleteSuccessMessage);
+        }).onError<ErrorMessage>((error, _) {
+          showSnackBar(context, translateError(context, error.code));
+        });
+      }
+    });
+  }
+
+  Future<void> _onOpen(DocumentModel document) async {
+    Navigator.of(context).push(
+      MaterialPageRoute(
+        builder: (context) => DocumentView(document: document),
+      ),
+    );
+  }
+
+  static String formatBytes(int bytes, int decimals) {
+    if (bytes <= 0) return "0 B";
+    const suffixes = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
+    var i = (log(bytes) / log(1024)).floor();
+    return ((bytes / pow(1024, i)).toStringAsFixed(decimals)) + ' ' + suffixes[i];
+  }
+}
+
+class _DetailsItem extends StatelessWidget {
+  final String label;
+  final Widget content;
+  const _DetailsItem({Key? key, required this.label, required this.content}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 8.0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            label,
+            style: Theme.of(context).textTheme.headline5?.copyWith(fontWeight: FontWeight.bold),
+          ),
+          content,
+        ],
+      ),
+    );
+  }
+
+  _DetailsItem.text(
+    String text, {
+    required this.label,
+    required BuildContext context,
+  }) : content = Text(text, style: Theme.of(context).textTheme.bodyText2);
+}
+
+class ColoredTabBar extends Container implements PreferredSizeWidget {
+  ColoredTabBar({
+    super.key,
+    required this.backgroundColor,
+    required this.tabBar,
+  });
+
+  final TabBar tabBar;
+  final Color backgroundColor;
+  @override
+  Size get preferredSize => tabBar.preferredSize;
+
+  @override
+  Widget build(BuildContext context) => Container(
+        color: backgroundColor,
+        child: tabBar,
+      );
+}

lib/features/documents/view/pages/document_edit_page.dart

@@ -0,0 +1,204 @@
+import 'dart:typed_data';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_form_builder/flutter_form_builder.dart';
+import 'package:flutter_paperless_mobile/di_initializer.dart';
+import 'package:flutter_paperless_mobile/extensions/flutter_extensions.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/query_parameters/correspondent_query.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/query_parameters/document_type_query.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/query_parameters/id_query_parameter.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/query_parameters/ids_query_parameter.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/query_parameters/storage_path_query.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/query_parameters/tags_query.dart';
+import 'package:flutter_paperless_mobile/features/labels/correspondent/bloc/correspondents_cubit.dart';
+import 'package:flutter_paperless_mobile/features/labels/document_type/bloc/document_type_cubit.dart';
+import 'package:flutter_paperless_mobile/features/documents/bloc/documents_cubit.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/document.model.dart';
+import 'package:flutter_paperless_mobile/features/documents/repository/document_repository.dart';
+import 'package:flutter_paperless_mobile/features/labels/correspondent/model/correspondent.model.dart';
+import 'package:flutter_paperless_mobile/features/labels/correspondent/view/pages/add_correspondent_page.dart';
+import 'package:flutter_paperless_mobile/features/labels/document_type/model/document_type.model.dart';
+import 'package:flutter_paperless_mobile/features/labels/document_type/view/pages/add_document_type_page.dart';
+import 'package:flutter_paperless_mobile/features/labels/storage_path/bloc/storage_path_cubit.dart';
+import 'package:flutter_paperless_mobile/features/labels/storage_path/model/storage_path.model.dart';
+import 'package:flutter_paperless_mobile/features/labels/storage_path/view/pages/add_storage_path_page.dart';
+import 'package:flutter_paperless_mobile/features/labels/tags/view/widgets/tags_form_field.dart';
+import 'package:flutter_paperless_mobile/features/labels/view/widgets/label_form_field.dart';
+import 'package:flutter_paperless_mobile/generated/l10n.dart';
+import 'package:flutter_paperless_mobile/util.dart';
+import 'package:form_builder_validators/form_builder_validators.dart';
+import 'package:image/image.dart';
+import 'package:intl/intl.dart';
+
+class DocumentEditPage extends StatefulWidget {
+  final DocumentModel document;
+  const DocumentEditPage({Key? key, required this.document}) : super(key: key);
+
+  @override
+  State<DocumentEditPage> createState() => _DocumentEditPageState();
+}
+
+class _DocumentEditPageState extends State<DocumentEditPage> {
+  static const fkTitle = "title";
+  static const fkCorrespondent = "correspondent";
+  static const fkTags = "tags";
+  static const fkDocumentType = "documentType";
+  static const fkCreatedDate = "createdAtDate";
+  static const fkStoragePath = 'storagePath';
+
+  late Future<Uint8List> documentBytes;
+
+  final GlobalKey<FormBuilderState> _formKey = GlobalKey();
+  bool _isSubmitLoading = false;
+
+  @override
+  void initState() {
+    documentBytes = getIt<DocumentRepository>().getPreview(widget.document.id);
+
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      resizeToAvoidBottomInset: false,
+      floatingActionButton: FloatingActionButton.extended(
+        onPressed: () async {
+          if (_formKey.currentState?.saveAndValidate() ?? false) {
+            final values = _formKey.currentState!.value;
+            final updatedDocument = widget.document.copyWith(
+              title: values[fkTitle],
+              created: values[fkCreatedDate],
+              documentType: values[fkDocumentType] as IdQueryParameter,
+              correspondent: values[fkCorrespondent] as IdQueryParameter,
+              storagePath: values[fkStoragePath] as IdQueryParameter,
+              tags: values[fkTags] as IdsQueryParameter,
+            );
+            setState(() {
+              _isSubmitLoading = true;
+            });
+            await getIt<DocumentsCubit>().updateDocument(updatedDocument);
+            Navigator.pop(context);
+            showSnackBar(context, "Document successfully updated."); //TODO: INTL
+          }
+        },
+        icon: const Icon(Icons.save),
+        label: Text(S.of(context).genericActionSaveLabel),
+      ),
+      appBar: AppBar(
+        title: Text(S.of(context).documentEditPageTitle),
+        bottom: _isSubmitLoading
+            ? const PreferredSize(
+                preferredSize: Size.fromHeight(4),
+                child: LinearProgressIndicator(),
+              )
+            : null,
+      ),
+      extendBody: true,
+      body: Padding(
+        padding: EdgeInsets.only(
+          bottom: MediaQuery.of(context).viewInsets.bottom,
+          top: 8,
+          left: 8,
+          right: 8,
+        ),
+        child: FormBuilder(
+          key: _formKey,
+          child: ListView(children: [
+            _buildTitleFormField().padded(),
+            _buildCreatedAtFormField().padded(),
+            BlocBuilder<DocumentTypeCubit, Map<int, DocumentType>>(
+              builder: (context, state) {
+                return LabelFormField<DocumentType, DocumentTypeQuery>(
+                  notAssignedSelectable: false,
+                  formBuilderState: _formKey.currentState,
+                  labelCreationWidgetBuilder: (currentInput) => BlocProvider.value(
+                    value: BlocProvider.of<DocumentTypeCubit>(context),
+                    child: AddDocumentTypePage(
+                      initialName: currentInput,
+                    ),
+                  ),
+                  label: S.of(context).documentDocumentTypePropertyLabel,
+                  initialValue: DocumentTypeQuery.fromId(widget.document.documentType),
+                  state: state,
+                  name: fkDocumentType,
+                  queryParameterIdBuilder: DocumentTypeQuery.fromId,
+                  queryParameterNotAssignedBuilder: DocumentTypeQuery.notAssigned,
+                  prefixIcon: const Icon(Icons.description_outlined),
+                );
+              },
+            ).padded(),
+            BlocBuilder<CorrespondentCubit, Map<int, Correspondent>>(
+              builder: (context, state) {
+                return LabelFormField<Correspondent, CorrespondentQuery>(
+                  notAssignedSelectable: false,
+                  formBuilderState: _formKey.currentState,
+                  labelCreationWidgetBuilder: (initialValue) => BlocProvider.value(
+                    value: BlocProvider.of<CorrespondentCubit>(context),
+                    child: AddCorrespondentPage(initalValue: initialValue),
+                  ),
+                  label: S.of(context).documentCorrespondentPropertyLabel,
+                  state: state,
+                  initialValue: CorrespondentQuery.fromId(widget.document.correspondent),
+                  name: fkCorrespondent,
+                  queryParameterIdBuilder: CorrespondentQuery.fromId,
+                  queryParameterNotAssignedBuilder: CorrespondentQuery.notAssigned,
+                  prefixIcon: const Icon(Icons.person_outlined),
+                );
+              },
+            ).padded(),
+            BlocBuilder<StoragePathCubit, Map<int, StoragePath>>(
+              builder: (context, state) {
+                return LabelFormField<StoragePath, StoragePathQuery>(
+                  notAssignedSelectable: false,
+                  formBuilderState: _formKey.currentState,
+                  labelCreationWidgetBuilder: (initialValue) => BlocProvider.value(
+                    value: BlocProvider.of<StoragePathCubit>(context),
+                    child: AddStoragePathPage(initalValue: initialValue),
+                  ),
+                  label: S.of(context).documentStoragePathPropertyLabel,
+                  state: state,
+                  initialValue: StoragePathQuery.fromId(widget.document.storagePath),
+                  name: fkStoragePath,
+                  queryParameterIdBuilder: StoragePathQuery.fromId,
+                  queryParameterNotAssignedBuilder: StoragePathQuery.notAssigned,
+                  prefixIcon: const Icon(Icons.folder_outlined),
+                );
+              },
+            ).padded(),
+            TagFormField(
+              initialValue: TagsQuery.fromIds(widget.document.tags),
+              name: fkTags,
+            ).padded(),
+          ]),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTitleFormField() {
+    return FormBuilderTextField(
+      name: fkTitle,
+      validator: FormBuilderValidators.required(),
+      decoration: InputDecoration(
+        label: Text(S.of(context).documentTitlePropertyLabel),
+      ),
+      initialValue: widget.document.title,
+    );
+  }
+
+  Widget _buildCreatedAtFormField() {
+    return FormBuilderDateTimePicker(
+      inputType: InputType.date,
+      name: fkCreatedDate,
+      decoration: InputDecoration(
+        prefixIcon: const Icon(Icons.calendar_month_outlined),
+        label: Text(S.of(context).documentCreatedPropertyLabel),
+      ),
+      initialValue: widget.document.created,
+      format: DateFormat("dd. MMMM yyyy"), //TODO: Localized date format
+      initialEntryMode: DatePickerEntryMode.calendar,
+    );
+  }
+}

lib/features/documents/view/pages/document_view.dart

@@ -0,0 +1,50 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_paperless_mobile/di_initializer.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/document.model.dart';
+import 'package:flutter_paperless_mobile/features/documents/repository/document_repository.dart';
+import 'package:flutter_paperless_mobile/generated/l10n.dart';
+import 'package:pdfx/pdfx.dart';
+
+class DocumentView extends StatefulWidget {
+  final DocumentModel document;
+
+  const DocumentView({
+    Key? key,
+    required this.document,
+  }) : super(key: key);
+
+  @override
+  State<DocumentView> createState() => _DocumentViewState();
+}
+
+class _DocumentViewState extends State<DocumentView> {
+  late PdfController _pdfController;
+
+  @override
+  void initState() {
+    super.initState();
+    _pdfController = PdfController(
+      document: PdfDocument.openData(
+        getIt<DocumentRepository>().getPreview(widget.document.id),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(S.of(context).documentPreviewPageTitle),
+      ),
+      body: PdfView(
+        builders: PdfViewBuilders<DefaultBuilderOptions>(
+          options: const DefaultBuilderOptions(),
+          pageLoaderBuilder: (context) => const Center(
+            child: CircularProgressIndicator(),
+          ),
+        ),
+        controller: _pdfController,
+      ),
+    );
+  }
+}

lib/features/documents/view/pages/documents_page.dart

@@ -0,0 +1,239 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_paperless_mobile/core/bloc/connectivity_cubit.dart';
+import 'package:flutter_paperless_mobile/core/logic/error_code_localization_mapper.dart';
+import 'package:flutter_paperless_mobile/core/model/error_message.dart';
+import 'package:flutter_paperless_mobile/core/widgets/offline_banner.dart';
+import 'package:flutter_paperless_mobile/di_initializer.dart';
+import 'package:flutter_paperless_mobile/features/labels/correspondent/bloc/correspondents_cubit.dart';
+import 'package:flutter_paperless_mobile/features/labels/document_type/bloc/document_type_cubit.dart';
+import 'package:flutter_paperless_mobile/features/documents/bloc/documents_cubit.dart';
+import 'package:flutter_paperless_mobile/features/documents/bloc/documents_state.dart';
+import 'package:flutter_paperless_mobile/features/documents/model/document.model.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/pages/document_details_page.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/documents_empty_state.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/grid/document_grid.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/list/document_list.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/search/document_filter_panel.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/selection/documents_page_app_bar.dart';
+import 'package:flutter_paperless_mobile/features/documents/view/widgets/sort_documents_button.dart';
+import 'package:flutter_paperless_mobile/features/home/view/widget/info_drawer.dart';
+import 'package:flutter_paperless_mobile/features/labels/storage_path/bloc/storage_path_cubit.dart';
+import 'package:flutter_paperless_mobile/features/login/bloc/authentication_cubit.dart';
+import 'package:flutter_paperless_mobile/features/labels/tags/bloc/tags_cubit.dart';
+import 'package:flutter_paperless_mobile/util.dart';
+import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
+import 'package:sliding_up_panel/sliding_up_panel.dart';
+
+class DocumentsPage extends StatefulWidget {
+  const DocumentsPage({Key? key}) : super(key: key);
+
+  @override
+  State<DocumentsPage> createState() => _DocumentsPageState();
+}
+
+class _DocumentsPageState extends State<DocumentsPage> {
+  final PagingController<int, DocumentModel> _pagingController =
+      PagingController<int, DocumentModel>(
+    firstPageKey: 1,
+  );
+
+  final PanelController _panelController = PanelController();
+  ViewType _viewType = ViewType.list;
+
+  @override
+  void initState() {
+    super.initState();
+    final documentsCubit = BlocProvider.of<DocumentsCubit>(context);
+    if (!documentsCubit.state.isLoaded) {
+      documentsCubit.loadDocuments().onError<ErrorMessage>(
+            (error, stackTrace) => showSnackBar(
+              context,
+              translateError(context, error.code),
+            ),
+          );
+    }
+    _pagingController.addPageRequestListener(_loadNewPage);
+  }
+
+  @override
+  void dispose() {
+    _pagingController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _loadNewPage(int pageKey) async {
+    final documentsCubit = BlocProvider.of<DocumentsCubit>(context);
+    final pageCount =
+        documentsCubit.state.inferPageCount(pageSize: documentsCubit.state.filter.pageSize);
+    if (pageCount <= pageKey + 1) {
+      _pagingController.nextPageKey = null;
+    }
+    documentsCubit.loadMore();
+  }
+
+  void _onSelected(DocumentModel model) {
+    BlocProvider.of<DocumentsCubit>(context).toggleDocumentSelection(model);
+  }
+
+  Future<void> _onRefresh() {
+    final documentsCubit = BlocProvider.of<DocumentsCubit>(context);
+    return documentsCubit
+        .updateFilter(filter: documentsCubit.state.filter.copyWith(page: 1))
+        .onError<ErrorMessage>((error, _) {
+      showSnackBar(context, translateError(context, error.code));
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return WillPopScope(
+      onWillPop: () async {
+        if (_panelController.isPanelOpen) {
+          FocusScope.of(context).unfocus();
+          _panelController.close();
+          return false;
+        }
+        final docBloc = BlocProvider.of<DocumentsCubit>(context);
+        if (docBloc.state.selection.isNotEmpty) {
+          docBloc.resetSelection();
+          return false;
+        }
+        return true;
+      },
+      child: BlocConsumer<ConnectivityCubit, ConnectivityState>(
+        listenWhen: (previous, current) =>
+            previous != ConnectivityState.connected && current == ConnectivityState.connected,
+        listener: (context, state) {
+          BlocProvider.of<DocumentsCubit>(context).loadDocuments();
+        },
+        builder: (context, connectivityState) {
+          return Scaffold(
+            drawer: BlocProvider.value(
+              value: BlocProvider.of<AuthenticationCubit>(context),
+              child: const InfoDrawer(),
+            ),
+            resizeToAvoidBottomInset: true,
+            appBar: connectivityState == ConnectivityState.connected ? null : const OfflineBanner(),
+            body: SlidingUpPanel(
+              backdropEnabled: true,
+              parallaxEnabled: true,
+              parallaxOffset: .5,
+              controller: _panelController,
+              defaultPanelState: PanelState.CLOSED,
+              minHeight: 48,
+              maxHeight: MediaQuery.of(context).size.height -
+                  kBottomNavigationBarHeight -
+                  2 * kToolbarHeight,
+              borderRadius: const BorderRadius.only(
+                topLeft: Radius.circular(16),
+                topRight: Radius.circular(16),
+              ),
+              body: _buildBody(connectivityState),
+              color: Theme.of(context).scaffoldBackgroundColor,
+              panelBuilder: (scrollController) => DocumentFilterPanel(
+                panelController: _panelController,
+                scrollController: scrollController,
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+
+  Widget _buildBody(ConnectivityState connectivityState) {
+    return BlocBuilder<DocumentsCubit, DocumentsState>(
+      builder: (context, state) {
+        // Some ugly tricks to make it work with bloc, update pageController
+        _pagingController.value = PagingState(
+          itemList: state.documents,
+          nextPageKey: state.nextPageNumber,
+        );
+
+        late Widget child;
+        switch (_viewType) {
+          case ViewType.list:
+            child = DocumentListView(
+              onTap: _openDocumentDetails,
+              state: state,
+              onSelected: _onSelected,
+              pagingController: _pagingController,
+              hasInternetConnection: connectivityState == ConnectivityState.connected,
+            );
+            break;
+          case ViewType.grid:
+            child = DocumentGridView(
+                onTap: _openDocumentDetails,
+                state: state,
+                onSelected: _onSelected,
+                pagingController: _pagingController,
+                hasInternetConnection: connectivityState == ConnectivityState.connected);
+            break;
+        }
+
+        if (state.isLoaded && state.documents.isEmpty) {
+          child = SliverToBoxAdapter(
+            child: DocumentsEmptyState(
+              state: state,
+            ),
+          );
+        }
+
+        return RefreshIndicator(
+          onRefresh: _onRefresh,
+          child: Container(
+            padding: const EdgeInsets.only(
+              bottom: 142,
+            ), // Prevents panel from hiding scrollable content
+            child: CustomScrollView(
+              slivers: [
+                DocumentsPageAppBar(
+                  actions: [
+                    const SortDocumentsButton(),
+                    IconButton(
+                      icon: Icon(
+                        _viewType == ViewType.grid ? Icons.list : Icons.grid_view,
+                      ),
+                      onPressed: () => setState(() => _viewType = _viewType.toggle()),
+                    ),
+                  ],
+                ),
+                child
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+
+  void _openDocumentDetails(DocumentModel model) {
+    Navigator.push(
+      context,
+      MaterialPageRoute(
+        builder: (context) => MultiBlocProvider(
+          providers: [
+            BlocProvider.value(value: getIt<DocumentsCubit>()),
+            BlocProvider.value(value: getIt<CorrespondentCubit>()),
+            BlocProvider.value(value: getIt<DocumentTypeCubit>()),
+            BlocProvider.value(value: getIt<TagCubit>()),
+            BlocProvider.value(value: getIt<StoragePathCubit>()),
+          ],
+          child: DocumentDetailsPage(
+            documentId: model.id,
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+enum ViewType {
+  grid,
+  list;
+
+  ViewType toggle() {
+    return this == grid ? list : grid;
+  }
+}