NoteBrowser: Add a button to rename notes

Fixes #23

lib/core/git_repo.dart

@@ -68,6 +68,19 @@ class GitNoteRepository {
     return NoteRepoResult(noteFilePath: newFullPath, error: false);
   }
 
+  Future<NoteRepoResult> renameNote(
+    String oldFullPath,
+    String newFullPath,
+  ) async {
+    // FIXME: This is a hacky way of adding the changes, ideally we should be calling rm + add or something
+    await _gitRepo.add(".");
+    await _gitRepo.commit(
+      message: "Renamed Note",
+    );
+
+    return NoteRepoResult(noteFilePath: newFullPath, error: false);
+  }
+
   Future<NoteRepoResult> removeNote(String noteFilePath) async {
     var pathSpec = noteFilePath.replaceFirst(gitDirPath, "").substring(1);
 

lib/core/note.dart

@@ -155,6 +155,15 @@ class Note with ChangeNotifier implements Comparable<Note> {
     await file.delete();
   }
 
+  void rename(String newName) {
+    var parentDirName = p.dirname(filePath);
+    var newFilePath = p.join(parentDirName, newName);
+    File(filePath).renameSync(newFilePath);
+    _filePath = newFilePath;
+
+    notifyListeners();
+  }
+
   @override
   int get hashCode => _filePath.hashCode;
 

lib/screens/journal_browsing.dart

@@ -11,9 +11,12 @@ import 'package:gitjournal/state_container.dart';
 import 'package:gitjournal/utils.dart';
 import 'package:gitjournal/settings.dart';
 import 'package:gitjournal/widgets/journal_editor_header.dart';
+import 'package:gitjournal/widgets/rename_dialog.dart';
 
 import 'journal_editor.dart';
 
+enum NoteBrowserDropDownChoices { Rename }
+
 class JournalBrowsingScreen extends StatefulWidget {
   final List<Note> notes;
   final int noteIndex;
@@ -31,9 +34,11 @@ class JournalBrowsingScreen extends StatefulWidget {
 
 class JournalBrowsingScreenState extends State<JournalBrowsingScreen> {
   PageController pageController;
+  int currentPage;
 
   JournalBrowsingScreenState({@required int noteIndex}) {
     pageController = PageController(initialPage: noteIndex);
+    currentPage = noteIndex;
   }
 
   @override
@@ -48,6 +53,11 @@ class JournalBrowsingScreenState extends State<JournalBrowsingScreen> {
           note: widget.notes[pos],
         );
       },
+      onPageChanged: (int pageNum) {
+        setState(() {
+          currentPage = pageNum;
+        });
+      },
     );
 
     return Scaffold(
@@ -66,6 +76,35 @@ class JournalBrowsingScreenState extends State<JournalBrowsingScreen> {
               Share.share(note.body);
             },
           ),
+          PopupMenuButton<NoteBrowserDropDownChoices>(
+            onSelected: (NoteBrowserDropDownChoices choice) async {
+              var note = widget.notes[currentPage];
+              switch (choice) {
+                case NoteBrowserDropDownChoices.Rename:
+                  var fileName = await showDialog(
+                    context: context,
+                    builder: (_) => RenameDialog(
+                      oldName: note.fileName,
+                      inputDecoration: 'File Name',
+                      dialogTitle: "Rename File",
+                    ),
+                  );
+                  if (fileName is String) {
+                    final container = StateContainer.of(context);
+                    container.renameNote(note, fileName);
+                  }
+
+                  break;
+              }
+            },
+            itemBuilder: (BuildContext context) =>
+                <PopupMenuEntry<NoteBrowserDropDownChoices>>[
+              const PopupMenuItem<NoteBrowserDropDownChoices>(
+                value: NoteBrowserDropDownChoices.Rename,
+                child: Text('Rename File'),
+              ),
+            ],
+          ),
         ],
       ),
       body: pageView,

lib/state_container.dart

@@ -150,6 +150,15 @@ class StateContainerState extends State<StateContainer> {
     });
   }
 
+  void renameNote(Note note, String newFileName) async {
+    var oldNotePath = note.filePath;
+    note.rename(newFileName);
+
+    _gitRepo.renameNote(oldNotePath, note.filePath).then((NoteRepoResult _) {
+      syncNotes();
+    });
+  }
+
   void addNote(Note note) {
     insertNote(0, note);
   }