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
|
var IRC = require('irc')
var FeedParser = require('feedparser')
var Request = require('request')
var Parse = require('shell-quote').parse
var FS = require('fs')
var irc_server = 'ire.retiolum'
var master_nick = 'knews'
var news_channel = '#news'
var feeds_file = 'new_feeds'
var feedbot_loop_delay = 60 * 1000 // [ms]
var slaves = {}
function main () {
var master = new IRC.Client(irc_server, master_nick, {
channels: [ news_channel ],
})
master.on('message' + news_channel, function (nick, text, message) {
if (is_talking_to(master_nick, text)) {
var request = parse_request(text)
if (request) {
return run_command(request.method, request.params, function (error, result) {
if (error) {
return master.say(news_channel, '4' + error)
} else {
return master.say(news_channel, result)
}
})
}
}
})
master.once('registered', function () {
// read feeds file and create a feedbot for each entry
FS
.readFileSync(feeds_file)
.toString()
.split('\n')
//.filter((function () {
// var n = 2;
// return function () {
// return n-- > 0
// }
//})())
.filter(function (line) {
return line.length > 0
})
.forEach(function (line) {
var parts = line.split('|')
if (parts.length !== 3) {
console.log('bad new_feeds line ' + lines + ': ' + line)
return
}
var nick = parts[0]
var uri = parts[1]
var channels = parts[2].split(' ')
return create_feedbot(nick, uri, channels)
})
})
}
function create_feedbot (nick, uri, channels) {
var client = new IRC.Client(irc_server, nick, {
channels: channels,
})
slaves[nick] = {
client: client,
nick: nick,
uri: uri,
channels: channels,
}
// say text in every joined channel
function broadcast (text) {
Object.keys(client.chans).forEach(function (channel) {
client.say(channel, text)
})
}
client.once('registered', loop_feedparser)
client.once('registered', deaf_myself)
client.on('error', function (error) {
console.log('Error:', error)
})
// TODO stopping criteria
function loop_feedparser () {
try {
var request = Request(uri)
var feedparser = new FeedParser()
} catch (error) {
return broadcast('4' + error)
}
request.on('error', function (error) {
broadcast('4request ' + error)
})
request.on('response', function (response) {
if (response.statusCode !== 200) {
return this.emit('error', new Error('Bad status code'))
}
this.pipe(feedparser)
})
var items = []
feedparser.on('error', function (error) {
broadcast('4feedparser ' + error)
})
feedparser.on('readable', function () {
for (var item; item = this.read(); ) {
items.push(item)
}
})
feedparser.on('end', function () {
items = items.sort(function (a, b) {
return a.date - b.date
})
var indexOfLastTitle = items
.map(function (x) { return x.title })
.indexOf(client.lastTitle)
var newitems = items
var olditems = []
// if items contain lastTitle, then only items after that are news
if (!!~indexOfLastTitle) {
olditems = newitems.splice(0, indexOfLastTitle + 1)
}
if (newitems.length > 0) {
// only broadcast news if we're not starting up
// (i.e. we already have a lastTitle)
if (client.lastTitle) {
newitems.forEach(function (item) {
broadcast(item.title + ' ' + item.link)
})
}
client.lastTitle = newitems[newitems.length - 1].title
}
return setTimeout(loop_feedparser, feedbot_loop_delay)
})
}
function deaf_myself () {
client.send('mode', nick, '+D')
}
}
// return true if text "is talking to" my_nick
function is_talking_to (my_nick, text) {
return text.slice(0, my_nick.length) === my_nick
&& text[my_nick.length] === ':'
}
function parse_request (text) {
var parse = Parse(text)
return {
method: parse[1],
params: parse.slice(2),
}
}
function run_command (methodname, params, callback) {
var method = methods[methodname]
if (method) {
return method(params, callback)
} else {
return callback(new Error('dunno what ' + methodname + ' is'));
}
}
var methods = {}
methods.add = function (params, callback) {
create_feedbot(params[0], params[1], [news_channel])
return callback(null)
}
methods.del = function (params, callback) {
var slave = slaves[params[0]]
if (slave) {
slave.client.disconnect()
delete slaves[params[0]]
return callback(null)
} else {
return callback(new Error('botname not found'))
}
}
methods.save = function (params, callback) {
var feeds = Object.keys(slaves)
.map(function (nick) {
return slaves[nick]
})
.map(function (slave) {
return [
slave.nick,
slave.uri,
slave.channels.join(' '),
].join('|')
}).join('\n') + '\n'
return FS.writeFile(feeds_file, feeds, function (error) {
if (error) {
return callback(error)
} else {
return callback(null, 'Feeds saved')
}
})
}
if (require.main === module) {
main()
}
|
