export & import work correctly with clones

src/routes/api/export.js

@@ -13,7 +13,68 @@ async function exportNote(req, res) {
 
     const pack = tar.pack();
 
-    const name = await exportNoteInner(branchId, '', pack);
+    const exportedNoteIds = [];
+    const name = await exportNoteInner(branchId, '');
+
+    async function exportNoteInner(branchId, directory) {
+        const branch = await repository.getBranch(branchId);
+        const note = await branch.getNote();
+        const childFileName = directory + sanitize(note.title);
+
+        if (exportedNoteIds.includes(note.noteId)) {
+            saveMetadataFile(childFileName, {
+                version: 1,
+                clone: true,
+                noteId: note.noteId,
+                prefix: branch.prefix
+            });
+
+            return;
+        }
+
+        const metadata = {
+            version: 1,
+            clone: false,
+            noteId: note.noteId,
+            title: note.title,
+            prefix: branch.prefix,
+            type: note.type,
+            mime: note.mime,
+            labels: (await note.getLabels()).map(label => {
+                return {
+                    name: label.name,
+                    value: label.value
+                };
+            })
+        };
+
+        if (metadata.labels.find(label => label.name === 'excludeFromExport')) {
+            return;
+        }
+
+        saveMetadataFile(childFileName, metadata);
+        saveDataFile(childFileName, note);
+
+        exportedNoteIds.push(note.noteId);
+
+        for (const child of await note.getChildBranches()) {
+            await exportNoteInner(child.branchId, childFileName + "/");
+        }
+
+        return childFileName;
+    }
+
+    function saveDataFile(childFileName, note) {
+        const content = note.type === 'text' ? html.prettyPrint(note.content, {indent_size: 2}) : note.content;
+
+        pack.entry({name: childFileName + ".dat", size: content.length}, content);
+    }
+
+    function saveMetadataFile(childFileName, metadata) {
+        const metadataJson = JSON.stringify(metadata, null, '\t');
+
+        pack.entry({name: childFileName + ".meta", size: metadataJson.length}, metadataJson);
+    }
 
     pack.finalize();
 
@@ -23,51 +84,6 @@ async function exportNote(req, res) {
     pack.pipe(res);
 }
 
-async function exportNoteInner(branchId, directory, pack) {
-    const branch = await repository.getBranch(branchId);
-    const note = await branch.getNote();
-
-    if (note.isProtected) {
-        return;
-    }
-
-    const metadata = await getMetadata(note);
-
-    if (metadata.labels.find(label => label.name === 'excludeFromExport')) {
-        return;
-    }
-
-    const metadataJson = JSON.stringify(metadata, null, '\t');
-    const childFileName = directory + sanitize(note.title);
-
-    pack.entry({ name: childFileName + ".meta", size: metadataJson.length }, metadataJson);
-
-    const content = note.type === 'text' ? html.prettyPrint(note.content, {indent_size: 2}) : note.content;
-
-    pack.entry({ name: childFileName + ".dat", size: content.length }, content);
-
-    for (const child of await note.getChildBranches()) {
-        await exportNoteInner(child.branchId, childFileName + "/", pack);
-    }
-
-    return childFileName;
-}
-
-async function getMetadata(note) {
-    return {
-        version: 1,
-        title: note.title,
-        type: note.type,
-        mime: note.mime,
-        labels: (await note.getLabels()).map(label => {
-            return {
-                name: label.name,
-                value: label.value
-            };
-        })
-    };
-}
-
 module.exports = {
     exportNote
 };

src/routes/api/import.js

@@ -3,6 +3,7 @@
 const repository = require('../../services/repository');
 const labelService = require('../../services/labels');
 const noteService = require('../../services/notes');
+const Branch = require('../../entities/branch');
 const tar = require('tar-stream');
 const stream = require('stream');
 const path = require('path');
@@ -31,7 +32,7 @@ async function parseImportFile(file) {
     const extract = tar.extract();
 
     extract.on('entry', function(header, stream, next) {
-        let {name, key} = getFileName(header.name);
+        const {name, key} = getFileName(header.name);
 
         let file = fileMap[name];
 
@@ -97,30 +98,46 @@ async function importTar(req) {
 
     const files = await parseImportFile(file);
 
-    await importNotes(files, parentNoteId);
+    // maps from original noteId (in tar file) to newly generated noteId
+    const noteIdMap = {};
+
+    await importNotes(files, parentNoteId, noteIdMap);
 }
 
-async function importNotes(files, parentNoteId) {
+async function importNotes(files, parentNoteId, noteIdMap) {
     for (const file of files) {
         if (file.meta.version !== 1) {
             throw new Error("Can't read meta data version " + file.meta.version);
         }
 
+        if (file.meta.clone) {
+            await new Branch({
+                parentNoteId: parentNoteId,
+                noteId: noteIdMap[file.meta.noteId],
+                prefix: file.meta.prefix
+            }).save();
+
+            return;
+        }
+
         if (file.meta.type !== 'file') {
             file.data = file.data.toString("UTF-8");
         }
 
         const {note} = await noteService.createNote(parentNoteId, file.meta.title, file.data, {
             type: file.meta.type,
-            mime: file.meta.mime
+            mime: file.meta.mime,
+            prefix: file.meta.prefix
         });
 
+        noteIdMap[file.meta.noteId] = note.noteId;
+
         for (const label of file.meta.labels) {
             await labelService.createLabel(note.noteId, label.name, label.value);
         }
 
         if (file.children.length > 0) {
-            await importNotes(file.children, note.noteId);
+            await importNotes(file.children, note.noteId, noteIdMap);
         }
     }
 }

src/services/notes.js

@@ -56,6 +56,7 @@ async function createNewNote(parentNoteId, noteData) {
         noteId: note.noteId,
         parentNoteId: parentNoteId,
         notePosition: newNotePos,
+        prefix: noteData.prefix,
         isExpanded: 0
     }).save();