Automatically relink attachments from LABD (#2374)

Fixes #2092

chrome/content/zotero/locateMenu.js

@@ -521,7 +521,13 @@ var Zotero_LocateMenu = new function() {
 				if(attachment.attachmentLinkMode !== Zotero.Attachments.LINK_MODE_LINKED_URL) {
 					var path = yield attachment.getFilePathAsync();
 					if (path) {
+						try {
 							var ext = Zotero.File.getExtension(Zotero.File.pathToFile(path));
+						}
+						catch (e) {
+							Zotero.logError(e);
+							return false;
+						}
 						if(!attachment.attachmentContentType ||
 								Zotero.MIME.hasNativeHandler(attachment.attachmentContentType, ext)) {
 							return false;

chrome/content/zotero/xpcom/data/items.js

@@ -2057,6 +2057,29 @@ Zotero.Items = function() {
 	};
 
 
+	/**
+	 * Find attachment items whose paths point to missing files and begin with
+	 * the passed `pathPrefix`.
+	 *
+	 * @param {Number} libraryID
+	 * @param {String} pathPrefix
+	 * @return {Zotero.Item[]}
+	 */
+	this.findMissingLinkedFiles = async function (libraryID, pathPrefix) {
+		let sql = "SELECT itemID FROM items JOIN itemAttachments USING (itemID) "
+			+ "WHERE itemID NOT IN (SELECT itemID FROM deletedItems) "
+			+ `AND linkMode=${Zotero.Attachments.LINK_MODE_LINKED_FILE} `
+			+ "AND path LIKE ? ESCAPE '\\' "
+			+ "AND libraryID=?";
+		let ids = await Zotero.DB.columnQueryAsync(sql, [Zotero.DB.escapeSQLExpression(pathPrefix) + '%', libraryID]);
+		let items = await this.getAsync(ids);
+		let missingItems = await Promise.all(
+			items.map(async item => (await item.fileExists() ? false : item))
+		);
+		return missingItems.filter(Boolean);
+	};
+	
+	
 	Zotero.DataObjects.call(this);
 	
 	return this;

chrome/content/zotero/xpcom/file.js

@@ -1088,7 +1088,31 @@ Zotero.File = new function(){
 			}
 			throw e;
 		}
+	};
+
+
+	/**
+	 * Normalize to a Unix-style path, replacing backslashes (interpreted as
+	 * separators only on Windows) with forward slashes (interpreted as
+	 * separators everywhere)
+	 *
+	 * @param {String} path
+	 * @return {String}
+	 */
+	this.normalizeToUnix = function (path) {
+		// If we're on Windows, we need to normalize first and then replace
+		// the slashes, because OS.Path.normalize won't handle forward slashes
+		// correctly. Otherwise, we replace slashes first and *then* normalize.
+		// This should ensure consistent behavior across platforms.
+		if (Zotero.isWin) {
+			let normalized = OS.Path.normalize(path);
+			return normalized.replace(/\\/g, '/');
 		}
+		else {
+			let replaced = path.replace(/\\/g, '/');
+			return OS.Path.normalize(replaced);
+		}
+	};
 	
 	
 	/**
@@ -1098,8 +1122,8 @@ Zotero.File = new function(){
 		if (typeof dir != 'string') throw new Error("dir must be a string");
 		if (typeof file != 'string') throw new Error("file must be a string");
 		
-		dir = OS.Path.normalize(dir).replace(/\\/g, "/");
-		file = OS.Path.normalize(file).replace(/\\/g, "/");
+		dir = this.normalizeToUnix(dir);
+		file = this.normalizeToUnix(file);
 		// Normalize D:\ vs. D:\foo
 		if (dir != file && !dir.endsWith('/')) {
 			dir += '/';

chrome/content/zotero/zoteroPane.js

@@ -4461,7 +4461,7 @@ var ZoteroPane = new function()
 			let path = item.getFilePath();
 			if (!path) {
 				ZoteroPane_Local.showAttachmentNotFoundDialog(
-					item.id,
+					item,
 					path,
 					{
 						noLocate: true,
@@ -4550,7 +4550,7 @@ var ZoteroPane = new function()
 			
 			if (isLinkedFile || !fileSyncingEnabled) {
 				this.showAttachmentNotFoundDialog(
-					itemID,
+					item,
 					path,
 					{
 						noLocate: noLocateOnMissing,
@@ -4576,7 +4576,7 @@ var ZoteroPane = new function()
 			
 			if (!await item.getFilePathAsync()) {
 				ZoteroPane_Local.showAttachmentNotFoundDialog(
-					item.id,
+					item,
 					path,
 					{
 						noLocate: noLocateOnMissing,
@@ -4643,7 +4643,7 @@ var ZoteroPane = new function()
 		
 		if (!fileExists) {
 			this.showAttachmentNotFoundDialog(
-				attachment.id,
+				attachment,
 				path,
 				{
 					noLocate: noLocateOnMissing,
@@ -4789,9 +4789,13 @@ var ZoteroPane = new function()
 	}
 	
 	
-	this.showAttachmentNotFoundDialog = function (itemID, path, options = {}) {
+	this.showAttachmentNotFoundDialog = async function (item, path, options = {}) {
 		var { noLocate, notOnServer, linkedFile } = options;
 
+		if (item.isLinkedFileAttachment() && await this.checkForLinkedFilesToRelink(item)) {
+			return;
+		}
+
 		var title = Zotero.getString('pane.item.attachments.fileNotFound.title');
 		var text = Zotero.getString(
 				'pane.item.attachments.fileNotFound.text1' + (path ? '.path' : '')
@@ -4806,7 +4810,7 @@ var ZoteroPane = new function()
 					),
 				[ZOTERO_CONFIG.CLIENT_NAME, ZOTERO_CONFIG.DOMAIN_NAME]
 			);
-		var supportURL = options.linkedFile
+		var supportURL = linkedFile
 			? 'https://www.zotero.org/support/kb/missing_linked_file'
 			: 'https://www.zotero.org/support/kb/files_not_syncing';
 		
@@ -4844,7 +4848,7 @@ var ZoteroPane = new function()
 		);
 		
 		if (index == 0) {
-			this.relinkAttachment(itemID);
+			this.relinkAttachment(item.id);
 		}
 		else if (index == 2) {
 			this.loadURI(supportURL, { metaKey: true, shiftKey: true });
@@ -4852,6 +4856,63 @@ var ZoteroPane = new function()
 	}
 
 
+	/**
+	 * Prompt the user to relink one or all of the attachment files found in
+	 * the LABD.
+	 *
+	 * @param {Zotero.Item} item
+	 * @param {String} path Path to the file matching `item`
+	 * @param {Number} numOthers If zero, "Relink All" option is not offered
+	 * @return {'one' | 'all' | 'manual' | 'cancel'}
+	 */
+	this.showLinkedFileFoundAutomaticallyDialog = function (item, path, numOthers) {
+		let ps = Services.prompt;
+
+		let title = Zotero.getString('pane.item.attachments.autoRelink.title');
+		let text = Zotero.getString('pane.item.attachments.autoRelink.text1') + '\n\n'
+			+ Zotero.getString('pane.item.attachments.autoRelink.text2', item.getFilePath()) + '\n'
+			+ Zotero.getString('pane.item.attachments.autoRelink.text3', path) + '\n\n'
+			+ Zotero.getString('pane.item.attachments.autoRelink.text4', Zotero.appName);
+		let buttonFlags = ps.BUTTON_POS_0 * ps.BUTTON_TITLE_IS_STRING
+			+ ps.BUTTON_POS_1 * ps.BUTTON_TITLE_CANCEL
+			+ ps.BUTTON_POS_2 * ps.BUTTON_TITLE_IS_STRING;
+		let index = ps.confirmEx(null,
+			title,
+			text,
+			buttonFlags,
+			Zotero.getString('pane.item.attachments.autoRelink.relink'),
+			null,
+			Zotero.getString('pane.item.attachments.autoRelink.locateManually'),
+			null, {}
+		);
+		
+		if (index == 1) {
+			// Cancel
+			return 'cancel';
+		}
+		else if (index == 2) {
+			// Locate Manually...
+			return 'manual';
+		}
+		
+		// Relink
+		if (!numOthers) {
+			return 'one';
+		}
+
+		title = Zotero.getString('pane.item.attachments.autoRelinkOthers.title');
+		text = Zotero.getString('pane.item.attachments.autoRelinkOthers.text', numOthers, numOthers);
+		index = ps.confirmEx(null,
+			title,
+			text,
+			ps.STD_YES_NO_BUTTONS,
+			null, null, null, null, {}
+		);
+		
+		return index == 0 ? 'all' : 'one';
+	};
+	
+	
 	this.syncAlert = function (e) {
 		e = Zotero.Sync.Runner.parseError(e);
 		var ps = Services.prompt;
@@ -5348,6 +5409,120 @@ var ZoteroPane = new function()
 	};
 
 
+	/**
+	 * Attempt to find a file in the LABD matching the passed attachment
+	 * by searching successive subdirectories. Prompt the user if a match is
+	 * found and offer to relink one or all matching files in the directory.
+	 * The user can also choose to relink manually, which opens a file picker.
+	 *
+	 * If the synced path is 'C:\Users\user\Documents\Dissertation\Files\Paper.pdf',
+	 * the LABD is '/Users/user/Documents', and the (not yet known) correct local
+	 * path is '/Users/user/Documents/Dissertation/Files/Paper.pdf', check:
+	 *
+	 * 1. /Users/user/Documents/Users/user/Documents/Dissertation/Files/Paper.pdf
+	 * 2. /Users/user/Documents/user/Documents/Dissertation/Files/Paper.pdf
+	 * 3. /Users/user/Documents/Documents/Dissertation/Files/Paper.pdf
+	 * 4. /Users/user/Documents/Dissertation/Files/Paper.pdf
+	 *
+	 * If line 4 had not been the correct local path (in other words, if no file
+	 * existed at that path), we would have continued on to check
+	 * '/Users/user/Documents/Dissertation/Paper.pdf'. If that did not match,
+	 * with no more segments in the synced path to drop, we would have given up.
+	 *
+	 * Once we find the file, check for other linked files beginning with
+	 * C:\Users\user\Documents\Dissertation\Files and see if they exist relative
+	 * to /Users/user/Documents/Dissertation/Files, and prompt to relink them
+	 * all if so.
+	 *
+	 * @param {Zotero.Item} item
+	 * @return {Promise<Boolean>} True if relinked successfully or canceled
+	 */
+	this.checkForLinkedFilesToRelink = async function (item) {
+		Zotero.debug('Attempting to relink automatically');
+		
+		let basePath = Zotero.Prefs.get('baseAttachmentPath');
+		if (!basePath) {
+			Zotero.debug('No LABD');
+			return false;
+		}
+		Zotero.debug('LABD path: ' + basePath);
+
+		let syncedPath = item.getFilePath();
+		if (!syncedPath) {
+			Zotero.debug('No synced path');
+			return false;
+		}
+		syncedPath = Zotero.File.normalizeToUnix(syncedPath);
+		Zotero.debug('Synced path: ' + syncedPath);
+
+		if (Zotero.File.directoryContains(basePath, syncedPath)) {
+			// Already in the LABD - nothing to do
+			Zotero.debug('Synced path is already within LABD');
+			return false;
+		}
+
+		// We can't use OS.Path.dirname because that function expects paths valid for the current platform...
+		// but we can't normalize first because we're going to be comparing it to other un-normalized paths
+		let unNormalizedDirname = item.getFilePath();
+		let lastSlash = Math.max(
+			unNormalizedDirname.lastIndexOf('/'),
+			unNormalizedDirname.lastIndexOf('\\')
+		);
+		if (lastSlash != -1) {
+			unNormalizedDirname = unNormalizedDirname.substring(0, lastSlash + 1);
+		}
+
+		let parts = OS.Path.split(syncedPath).components;
+		for (let segmentsToDrop = 0; segmentsToDrop < parts.length; segmentsToDrop++) {
+			let correctedPath = OS.Path.join(basePath, ...parts.slice(segmentsToDrop));
+
+			if (!(await OS.File.exists(correctedPath))) {
+				Zotero.debug('Does not exist: ' + correctedPath);
+				continue;
+			}
+			Zotero.debug('Exists! ' + correctedPath);
+
+			let otherUnlinked = await Zotero.Items.findMissingLinkedFiles(
+				item.libraryID,
+				unNormalizedDirname
+			);
+			let othersToRelink = new Map();
+			for (let otherItem of otherUnlinked) {
+				if (otherItem.id === item.id) continue;
+				let otherParts = otherItem.getFilePath()
+					.split(/[/\\]/)
+					// Slice as much off the beginning as when creating correctedPath
+					.slice(segmentsToDrop);
+				if (!otherParts.length) continue;
+				let otherCorrectedPath = OS.Path.join(basePath, ...otherParts);
+				if (await OS.File.exists(otherCorrectedPath)) {
+					othersToRelink.set(otherItem, otherCorrectedPath);
+				}
+			}
+
+			let choice = this.showLinkedFileFoundAutomaticallyDialog(item, correctedPath, othersToRelink.size);
+			switch (choice) {
+				case 'one':
+					await item.relinkAttachmentFile(correctedPath);
+					return true;
+				case 'all':
+					await item.relinkAttachmentFile(correctedPath);
+					await Promise.all([...othersToRelink]
+						.map(([i, p]) => i.relinkAttachmentFile(p)));
+					return true;
+				case 'manual':
+					await this.relinkAttachment(item.id);
+					return true;
+				case 'cancel':
+					return true;
+			}
+		}
+		
+		Zotero.debug('No segments left to drop; match not found in LABD');
+		return false;
+	};
+	
+	
 	this.relinkAttachment = async function (itemID) {
 		if (!this.canEdit()) {
 			this.displayCannotEditLibraryMessage();
@@ -5371,8 +5546,14 @@ var ZoteroPane = new function()
 			
 			var dir = await Zotero.File.getClosestDirectory(file);
 			if (dir) {
+				try {
 					fp.displayDirectory = dir;
 				}
+				catch (e) {
+					// Directory is invalid; ignore and go with the home directory
+					fp.displayDirectory = OS.Constants.Path.homeDir;
+				}
+			}
 			
 			fp.appendFilters(fp.filterAll);
 			

chrome/locale/en-US/zotero/zotero.properties

@@ -415,6 +415,16 @@ pane.item.attachments.fileNotFound.text2.stored = It may have been moved or dele
 pane.item.attachments.fileNotFound.text2.stored.notOnServer = It may have been moved or deleted outside of %1$S, or, if the file was added on another computer, it may not yet have been synced to %2$S.
 pane.item.attachments.fileNotFound.text2.linked = It may have been moved or deleted outside of %1$S, or a Linked Attachment Base Directory may be set incorrectly on one of your computers.
 pane.item.attachments.delete.confirm  = Are you sure you want to delete this attachment?
+pane.item.attachments.autoRelink.title = File Located Automatically
+pane.item.attachments.autoRelink.text1 = The file could not be found at the specified location, but a matching file was found in your Linked Attachment Base Directory:
+pane.item.attachments.autoRelink.text2 = Old Location: %S
+pane.item.attachments.autoRelink.text3 = New Location: %S
+pane.item.attachments.autoRelink.text4 = %1$S can automatically relink this attachment.
+pane.item.attachments.autoRelink.relink = Relink
+pane.item.attachments.autoRelinkOthers.title = More Files Located
+pane.item.attachments.autoRelinkOthers.text = One other unlinked attachment in this library was found in the same directory. Relink the additional located attachment?;%S other unlinked attachments in this library were found in the same directory. Relink the additional located attachments?
+pane.item.attachments.autoRelink.locateManually = Locate Manually…
+pane.item.attachments.autoRelink.relinkAll = Relink All
 pane.item.attachments.count.zero      = %S attachments:
 pane.item.attachments.count.singular  = %S attachment:
 pane.item.attachments.count.plural    = %S attachments:

test/tests/fileTest.js

@@ -535,4 +535,18 @@ describe("Zotero.File", function () {
 			assert.equal(contents, 'Hello Zotero\n');
 		});
 	});
+
+	describe("#normalizeToUnix()", function () {
+		it("should normalize a Unix-style path", async function () {
+			assert.equal(Zotero.File.normalizeToUnix('/path/to/directory/'), '/path/to/directory');
+		});
+
+		it("should normalize '.' and '..'", async function () {
+			assert.equal(Zotero.File.normalizeToUnix('/path/./to/some/../file'), '/path/to/file');
+		});
+
+		it("should replace backslashes with forward slashes and trim trailing", async function () {
+			assert.equal(Zotero.File.normalizeToUnix('C:\\Zotero\\Some\\Directory\\'), 'C:/Zotero/Some/Directory');
+		});
+	});
 })

test/tests/zoteroPaneTest.js

@@ -1269,4 +1269,169 @@ describe("ZoteroPane", function() {
 			assert.isFalse(attachment3.deleted);
 		});
 	});
+
+	describe("#checkForLinkedFilesToRelink()", function () {
+		let labdDir;
+
+		this.beforeEach(async () => {
+			labdDir = await getTempDirectory();
+			Zotero.Prefs.set('baseAttachmentPath', labdDir);
+			Zotero.Prefs.set('saveRelativeAttachmentPath', true);
+		});
+
+		it("should detect and relink a single attachment", async function () {
+			let item = await createDataObject('item');
+			let file = getTestDataDirectory();
+			file.append('test.pdf');
+			let outsideStorageDir = await getTempDirectory();
+			let outsideFile = OS.Path.join(outsideStorageDir, 'test.pdf');
+
+			let labdFile = OS.Path.join(labdDir, 'test.pdf');
+
+			await OS.File.copy(file.path, outsideFile);
+
+			let attachment = await Zotero.Attachments.linkFromFile({
+				file: outsideFile,
+				parentItemID: item.id
+			});
+
+			await assert.eventually.isTrue(attachment.fileExists());
+			await OS.File.move(outsideFile, labdFile);
+			await assert.eventually.isFalse(attachment.fileExists());
+
+			let stub = sinon.stub(zp, 'showLinkedFileFoundAutomaticallyDialog')
+				.returns('one');
+			await zp.checkForLinkedFilesToRelink(attachment);
+			assert.ok(stub.calledOnce);
+			assert.ok(stub.calledWith(attachment, sinon.match.string, 0));
+
+			await assert.eventually.isTrue(attachment.fileExists());
+			assert.equal(attachment.getFilePath(), labdFile);
+			assert.equal(attachment.attachmentPath, 'attachments:test.pdf');
+
+			stub.restore();
+		});
+
+		it("should detect and relink multiple attachments when user chooses", async function () {
+			for (let choice of ['one', 'all']) {
+				let file1 = getTestDataDirectory();
+				file1.append('test.pdf');
+				let file2 = getTestDataDirectory();
+				file2.append('empty.pdf');
+				let outsideStorageDir = await getTempDirectory();
+				let outsideFile1 = OS.Path.join(outsideStorageDir, 'test.pdf');
+				let outsideFile2 = OS.Path.join(outsideStorageDir, 'empty.pdf');
+
+				let labdFile1 = OS.Path.join(labdDir, 'test.pdf');
+				let labdFile2 = OS.Path.join(labdDir, 'empty.pdf');
+
+				await OS.File.copy(file1.path, outsideFile1);
+				await OS.File.copy(file2.path, outsideFile2);
+
+				let attachment1 = await Zotero.Attachments.linkFromFile({ file: outsideFile1 });
+				let attachment2 = await Zotero.Attachments.linkFromFile({ file: outsideFile2 });
+
+				await assert.eventually.isTrue(attachment1.fileExists());
+				await assert.eventually.isTrue(attachment2.fileExists());
+				await OS.File.move(outsideFile1, labdFile1);
+				await OS.File.move(outsideFile2, labdFile2);
+				await assert.eventually.isFalse(attachment1.fileExists());
+				await assert.eventually.isFalse(attachment2.fileExists());
+
+				let stub = sinon.stub(zp, 'showLinkedFileFoundAutomaticallyDialog')
+					.returns(choice);
+				await zp.checkForLinkedFilesToRelink(attachment1);
+				assert.ok(stub.calledOnce);
+				assert.ok(stub.calledWith(attachment1, sinon.match.string, 1));
+
+				await assert.eventually.isTrue(attachment1.fileExists());
+				await assert.eventually.equal(attachment2.fileExists(), choice === 'all');
+				assert.equal(attachment1.getFilePath(), labdFile1);
+				assert.equal(attachment1.attachmentPath, 'attachments:test.pdf');
+				if (choice === 'all') {
+					assert.equal(attachment2.getFilePath(), labdFile2);
+					assert.equal(attachment2.attachmentPath, 'attachments:empty.pdf');
+				}
+				else {
+					assert.equal(attachment2.getFilePath(), outsideFile2);
+				}
+
+				stub.restore();
+			}
+		});
+
+		it("should use subdirectories of original path", async function () {
+			let file = getTestDataDirectory();
+			file.append('test.pdf');
+			let outsideStorageDir = OS.Path.join(await getTempDirectory(), 'subdir');
+			await OS.File.makeDir(outsideStorageDir);
+			let outsideFile = OS.Path.join(outsideStorageDir, 'test.pdf');
+
+			let labdSubdir = OS.Path.join(labdDir, 'subdir');
+			await OS.File.makeDir(labdSubdir);
+			let labdFile = OS.Path.join(labdSubdir, 'test.pdf');
+
+			await OS.File.copy(file.path, outsideFile);
+
+			let attachment = await Zotero.Attachments.linkFromFile({ file: outsideFile });
+
+			await assert.eventually.isTrue(attachment.fileExists());
+			await OS.File.move(outsideFile, labdFile);
+			await assert.eventually.isFalse(attachment.fileExists());
+
+			let dialogStub = sinon.stub(zp, 'showLinkedFileFoundAutomaticallyDialog')
+				.returns('one');
+			let existsSpy = sinon.spy(OS.File, 'exists');
+			await zp.checkForLinkedFilesToRelink(attachment);
+			assert.ok(dialogStub.calledOnce);
+			assert.ok(dialogStub.calledWith(attachment, sinon.match.string, 0));
+			assert.ok(existsSpy.calledWith(OS.Path.join(labdSubdir, 'test.pdf')));
+			assert.notOk(existsSpy.calledWith(OS.Path.join(labdDir, 'test.pdf'))); // Should never get there
+
+			await assert.eventually.isTrue(attachment.fileExists());
+			assert.equal(attachment.getFilePath(), labdFile);
+			assert.equal(attachment.attachmentPath, 'attachments:subdir/test.pdf');
+
+			dialogStub.restore();
+			existsSpy.restore();
+		});
+
+		it("should handle Windows paths", async function () {
+			let filenames = [['test.pdf'], ['empty.pdf'], ['search', 'baz.pdf']];
+			let labdFiles = [];
+			let attachments = [];
+
+			for (let parts of filenames) {
+				let file = getTestDataDirectory();
+				parts.forEach(part => file.append(part));
+
+				await OS.File.makeDir(OS.Path.join(labdDir, ...parts.slice(0, -1)));
+				let labdFile = OS.Path.join(labdDir, ...parts);
+				await OS.File.copy(file.path, labdFile);
+				labdFiles.push(labdFile);
+
+				let attachment = await Zotero.Attachments.linkFromFile({ file });
+				attachment.attachmentPath = `C:\\test\\${parts.join('\\')}`;
+				await attachment.saveTx();
+				attachments.push(attachment);
+
+				await assert.eventually.isFalse(attachment.fileExists());
+			}
+
+			let stub = sinon.stub(zp, 'showLinkedFileFoundAutomaticallyDialog')
+				.returns('all');
+			await zp.checkForLinkedFilesToRelink(attachments[0]);
+			assert.ok(stub.calledOnce);
+			assert.ok(stub.calledWith(attachments[0], sinon.match.string, filenames.length - 1));
+
+			for (let i = 0; i < filenames.length; i++) {
+				let attachment = attachments[i];
+				await assert.eventually.isTrue(attachment.fileExists());
+				assert.equal(attachment.getFilePath(), labdFiles[i]);
+				assert.equal(attachment.attachmentPath, 'attachments:' + OS.Path.join(...filenames[i]));
+			}
+
+			stub.restore();
+		});
+	});
 })