1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
"use strict";
// external modules
var fs = require('fs');
var path = require('path');
var LZString = require('lz-string');
var marked = require('marked');
var cheerio = require('cheerio');
var shortId = require('shortid');
var Sequelize = require("sequelize");
var async = require('async');
var moment = require('moment');
// core
var config = require("../config.js");
var logger = require("../logger.js");
// permission types
var permissionTypes = ["freely", "editable", "locked", "private"];
module.exports = function (sequelize, DataTypes) {
var Note = sequelize.define("Note", {
id: {
type: DataTypes.UUID,
primaryKey: true,
defaultValue: Sequelize.UUIDV4
},
shortid: {
type: DataTypes.STRING,
unique: true,
allowNull: false,
defaultValue: shortId.generate
},
alias: {
type: DataTypes.STRING,
unique: true
},
permission: {
type: DataTypes.ENUM,
values: permissionTypes
},
viewcount: {
type: DataTypes.INTEGER,
allowNull: false,
defaultValue: 0
},
title: {
type: DataTypes.TEXT
},
content: {
type: DataTypes.TEXT
},
lastchangeAt: {
type: DataTypes.DATE
},
savedAt: {
type: DataTypes.DATE
}
}, {
classMethods: {
associate: function (models) {
Note.belongsTo(models.User, {
foreignKey: "ownerId",
as: "owner",
constraints: false
});
Note.belongsTo(models.User, {
foreignKey: "lastchangeuserId",
as: "lastchangeuser",
constraints: false
});
Note.hasMany(models.Revision, {
foreignKey: "noteId",
constraints: false
});
},
checkFileExist: function (filePath) {
try {
return fs.statSync(filePath).isFile();
} catch (err) {
return false;
}
},
checkNoteIdValid: function (id) {
var uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
var result = id.match(uuidRegex);
if (result && result.length == 1)
return true;
else
return false;
},
parseNoteId: function (noteId, callback) {
async.series({
parseNoteIdByAlias: function (_callback) {
// try to parse note id by alias (e.g. doc)
Note.findOne({
where: {
alias: noteId
}
}).then(function (note) {
if (note) {
var filePath = path.join(config.docspath, noteId + '.md');
if (Note.checkFileExist(filePath)) {
// if doc in filesystem have newer modified time than last change time
// then will update the doc in db
var fsModifiedTime = moment(fs.statSync(filePath).mtime);
var dbModifiedTime = moment(note.lastchangeAt || note.createdAt);
if (fsModifiedTime.isAfter(dbModifiedTime)) {
var body = fs.readFileSync(filePath, 'utf8');
note.update({
title: LZString.compressToBase64(Note.parseNoteTitle(body)),
content: LZString.compressToBase64(body),
lastchangeAt: fsModifiedTime
}).then(function (note) {
sequelize.models.Revision.saveNoteRevision(note, function (err, revision) {
if (err) return _callback(err, null);
return callback(null, note.id);
});
}).catch(function (err) {
return _callback(err, null);
});
} else {
return callback(null, note.id);
}
} else {
return callback(null, note.id);
}
} else {
var filePath = path.join(config.docspath, noteId + '.md');
if (Note.checkFileExist(filePath)) {
Note.create({
alias: noteId,
owner: null,
permission: 'locked'
}).then(function (note) {
return callback(null, note.id);
}).catch(function (err) {
return _callback(err, null);
});
} else {
return _callback(null, null);
}
}
}).catch(function (err) {
return _callback(err, null);
});
},
parseNoteIdByLZString: function (_callback) {
// try to parse note id by LZString Base64
try {
var id = LZString.decompressFromBase64(noteId);
if (id && Note.checkNoteIdValid(id))
return callback(null, id);
else
return _callback(null, null);
} catch (err) {
return _callback(err, null);
}
},
parseNoteIdByShortId: function (_callback) {
// try to parse note id by shortId
try {
if (shortId.isValid(noteId)) {
Note.findOne({
where: {
shortid: noteId
}
}).then(function (note) {
if (!note) return _callback(null, null);
return callback(null, note.id);
}).catch(function (err) {
return _callback(err, null);
});
} else {
return _callback(null, null);
}
} catch (err) {
return _callback(err, null);
}
}
}, function (err, result) {
if (err) {
logger.error(err);
return callback(err, null);
}
return callback(null, null);
});
},
parseNoteTitle: function (body) {
var $ = cheerio.load(marked(body));
var h1s = $("h1");
var title = "";
if (h1s.length > 0 && h1s.first().text().split('\n').length == 1)
title = h1s.first().text();
else
title = "Untitled";
return title;
},
decodeTitle: function (title) {
var decodedTitle = LZString.decompressFromBase64(title);
if (decodedTitle) title = decodedTitle;
else title = 'Untitled';
return title;
},
generateWebTitle: function (title) {
title = !title || title == "Untitled" ? "HackMD - Collaborative markdown notes" : title + " - HackMD";
return title;
}
},
hooks: {
beforeCreate: function (note, options, callback) {
// if no content specified then use default note
if (!note.content) {
var body = null;
var filePath = null;
if (!note.alias) {
filePath = config.defaultnotepath;
} else {
filePath = path.join(config.docspath, note.alias + '.md');
}
if (Note.checkFileExist(filePath)) {
var fsCreatedTime = moment(fs.statSync(filePath).ctime);
body = fs.readFileSync(filePath, 'utf8');
note.title = LZString.compressToBase64(Note.parseNoteTitle(body));
note.content = LZString.compressToBase64(body);
if (filePath !== config.defaultnotepath) {
note.createdAt = fsCreatedTime;
}
}
}
// if no permission specified and have owner then give editable permission, else default permission is freely
if (!note.permission) {
if (note.ownerId) {
note.permission = "editable";
} else {
note.permission = "freely";
}
}
return callback(null, note);
},
afterCreate: function (note, options, callback) {
sequelize.models.Revision.saveNoteRevision(note, function (err, revision) {
callback(err, note);
});
}
}
});
return Note;
};
|
