sync attach ok

node_modules/note.js

@@ -1086,6 +1086,68 @@ var Note = {
 		}
 	},
 
+	/*
+	1) sync时判断是否有attach, 如果有, 则异步下载之
+	2) 前端render note时, 判断是否有未Path的attach, 调用该服务
+	从服务器端下载文件, 并通过到前端已下载完成
+	*/
+	inDownload: {}, // 正在下载的文件 fileId => true
+	downloaded: {}, // 下载完成的
+	downloadAttachFromServer: function(noteId, serverFileId, fileId) {
+		var me = this;
+		if(me.inDownload[serverFileId]) {
+			return;
+		}
+		if(!Api) {
+			Api = require('api');
+		}
+
+		me.inDownload[serverFileId] = true;
+		Api.getAttach(serverFileId, function(ok, toPath, filename) { 
+			me.inDownload[serverFileId] = false;
+			if(ok) {
+				me.downloaded[serverFileId] = fileId;
+				// 更新serverFileId与fileId的映射, 修改的是note
+				me.syncAttach(noteId, serverFileId, fileId, toPath, filename, function(ok, attachs, attach) {
+					if(ok) {
+						// 通知web
+						Web.attachSynced(attachs, attach, noteId);
+					}
+				});
+			} else {
+				// 下次再下载 ?
+				// 或者放到一个队列中 ?
+				// TODO
+			}
+		});
+	},
+
+	// 同步附件, 更新serverFileId
+	syncAttach: function(noteId, serverFileId, fileId, path, filename, callback) {
+		var me = this;
+		me.getNote(noteId, function(note) {
+			if(!note) {
+				callback(false);
+			}
+			var attachs = note.Attachs;
+			for(var i in attachs) {
+				var attach = attachs[i];
+				if(attach.FileId == fileId) {
+					attach.ServerFileId = serverFileId;
+					attach.Path = path;
+					// attach.Title = filename;
+					// attach.Filename = filename;
+
+					Notes.update({_id: note._id}, {$set: {Attachs: attachs}}, function() {
+						callback(true, attachs, attach);
+					});
+					break;
+				}
+			}
+			callback(false);
+		});
+	},
+
 	// 根据标签得到笔记数量
 	countNoteByTag: function(title, callback) {
 		var userId = User.getCurActiveUserId();