define([ "underscore", "utils", "classes/Provider", "eventMgr", "fileMgr", "helpers/dropboxHelper" ], function(_, utils, Provider, eventMgr, fileMgr, dropboxHelper) { var PROVIDER_DROPBOX = "dropbox"; var dropboxProvider = new Provider(PROVIDER_DROPBOX, "Dropbox"); dropboxProvider.defaultPublishFormat = "template"; function checkPath(path) { if(path === undefined) { return undefined; } if(!path.match(/^[^\\<>:"\|?\*]+$/)) { eventMgr.onError('"' + path + '" contains invalid characters.'); return undefined; } if(path.indexOf("/") !== 0) { return "/" + path; } return path; } function createSyncIndex(path) { return "sync." + PROVIDER_DROPBOX + "." + encodeURIComponent(path.toLowerCase()); } function createSyncAttributes(path, versionTag, content) { var syncAttributes = {}; syncAttributes.provider = dropboxProvider; syncAttributes.path = path; syncAttributes.version = versionTag; syncAttributes.contentCRC = utils.crc32(content); syncAttributes.syncIndex = createSyncIndex(path); return syncAttributes; } function importFilesFromPaths(paths) { dropboxHelper.downloadMetadata(paths, function(error, result) { if(error) { return; } dropboxHelper.downloadContent(result, function(error, result) { if(error) { return; } var fileDescList = []; _.each(result, function(file) { var syncAttributes = createSyncAttributes(file.path, file.versionTag, file.content); var syncLocations = {}; syncLocations[syncAttributes.syncIndex] = syncAttributes; var fileDesc = fileMgr.createFile(file.name, file.content, syncLocations); fileMgr.selectFile(fileDesc); fileDescList.push(fileDesc); }); if(fileDescList.length !== 0) { eventMgr.onSyncImportSuccess(fileDescList, dropboxProvider); } }); }); } dropboxProvider.importFiles = function() { dropboxHelper.picker(function(error, paths) { if(error || paths.length === 0) { return; } var importPaths = []; _.each(paths, function(path) { var syncIndex = createSyncIndex(path); var fileDesc = fileMgr.getFileFromSyncIndex(syncIndex); if(fileDesc !== undefined) { eventMgr.onError('"' + fileDesc.title + '" was already imported.'); return; } importPaths.push(path); }); importFilesFromPaths(importPaths); }); }; dropboxProvider.exportFile = function(event, title, content, callback) { var path = utils.getInputTextValue("#input-sync-export-dropbox-path", event); path = checkPath(path); if(path === undefined) { callback(true); return; } // Check that file is not synchronized with another one var syncIndex = createSyncIndex(path); var fileDesc = fileMgr.getFileFromSyncIndex(syncIndex); if(fileDesc !== undefined) { var existingTitle = fileDesc.title; eventMgr.onError('File path is already synchronized with "' + existingTitle + '".'); callback(true); return; } dropboxHelper.upload(path, content, function(error, result) { if(error) { callback(error); return; } var syncAttributes = createSyncAttributes(result.path, result.versionTag, content); callback(undefined, syncAttributes); }); }; dropboxProvider.syncUp = function(uploadContent, uploadContentCRC, uploadTitle, uploadTitleCRC, syncAttributes, callback) { var syncContentCRC = syncAttributes.contentCRC; // Skip if CRC has not changed if(uploadContentCRC == syncContentCRC) { callback(undefined, false); return; } dropboxHelper.upload(syncAttributes.path, uploadContent, function(error, result) { if(error) { callback(error, true); return; } syncAttributes.version = result.versionTag; syncAttributes.contentCRC = uploadContentCRC; callback(undefined, true); }); }; dropboxProvider.syncDown = function(callback) { var lastChangeId = localStorage[PROVIDER_DROPBOX + ".lastChangeId"]; dropboxHelper.checkChanges(lastChangeId, function(error, changes, newChangeId) { if(error) { callback(error); return; } var interestingChanges = []; _.each(changes, function(change) { var syncIndex = createSyncIndex(change.path); var syncAttributes = fileMgr.getSyncAttributes(syncIndex); if(syncAttributes === undefined) { return; } // Store syncAttributes to avoid 2 times searching change.syncAttributes = syncAttributes; // Delete if(change.wasRemoved === true) { interestingChanges.push(change); return; } // Modify if(syncAttributes.version != change.stat.versionTag) { interestingChanges.push(change); } }); dropboxHelper.downloadContent(interestingChanges, function(error, changes) { if(error) { callback(error); return; } _.each(changes, function(change) { var syncAttributes = change.syncAttributes; var syncIndex = syncAttributes.syncIndex; var fileDesc = fileMgr.getFileFromSyncIndex(syncIndex); // No file corresponding (file may have been deleted // locally) if(fileDesc === undefined) { return; } var localTitle = fileDesc.title; // File deleted if(change.wasRemoved === true) { eventMgr.onError('"' + localTitle + '" has been removed from Dropbox.'); fileDesc.removeSyncLocation(syncAttributes); eventMgr.onSyncRemoved(fileDesc, syncAttributes); return; } var localContent = fileDesc.content; var localContentChanged = syncAttributes.contentCRC != utils.crc32(localContent); var file = change.stat; var remoteContentCRC = utils.crc32(file.content); var remoteContentChanged = syncAttributes.contentCRC != remoteContentCRC; var fileContentChanged = localContent != file.content; // Conflict detection if(fileContentChanged === true && localContentChanged === true && remoteContentChanged === true) { fileMgr.createFile(localTitle + " (backup)", localContent); eventMgr.onMessage('Conflict detected on "' + localTitle + '". A backup has been created locally.'); } // If file content changed if(fileContentChanged && remoteContentChanged === true) { fileDesc.content = file.content; eventMgr.onContentChanged(fileDesc); eventMgr.onMessage('"' + localTitle + '" has been updated from Dropbox.'); if(fileMgr.currentFile === fileDesc) { fileMgr.selectFile(); // Refresh editor } } // Update syncAttributes syncAttributes.version = file.versionTag; syncAttributes.contentCRC = remoteContentCRC; utils.storeAttributes(syncAttributes); }); localStorage[PROVIDER_DROPBOX + ".lastChangeId"] = newChangeId; callback(); }); }); }; dropboxProvider.publish = function(publishAttributes, frontMatter, title, content, callback) { var path = checkPath(publishAttributes.path); if(path === undefined) { callback(true); return; } dropboxHelper.upload(path, content, callback); }; dropboxProvider.newPublishAttributes = function(event) { var publishAttributes = {}; publishAttributes.path = utils.getInputTextValue("#input-publish-dropbox-path", event); if(event.isPropagationStopped()) { return undefined; } return publishAttributes; }; return dropboxProvider; });