summaryrefslogtreecommitdiffstats
path: root/news/newsbot.js
blob: fda7f7f4f4f858203f3d3d6dee6ddaa97a20b834 (plain)
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
var IRC = require('irc')
var FeedParser = require('feedparser')
var Request = require('request')

var irc_server = 'ire.retiolum'
var master_nick = 'knews'
var news_channel = '&testing'
var feeds_file = 'new_feeds'
var feedbot_loop_delay = 60 * 1000 // [ms]

function main () {
  // XXX mangle nick to not clash with newsbot.py
  var master = new IRC.Client(irc_server, master_nick + '_2', {
    channels: [ news_channel ],
  })

  master.on('message' + news_channel, function (nick, text, message) {
    if (is_talking_to(master_nick, text)) {
      var parse = /^[^:]*:\s*(\S*\S)\s*$/.exec(text)
      if (parse) {
        client.say(to, nick + ': ' + parse[1] + '?')
      }
  })

  master.once('registered', function () {
    // read feeds file and create a feedbot for each entry
    require('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
        }

        // XXX mangle nick to not clash with newsbot.py
        var nick = parts[0] + '_2'
        var uri = parts[1]
        var channels = parts[2].split(' ')

        // XXX mangle channel to not clash with newsbot.py
        channels = channels.map(function (channel) {
          return channel === '#news' ? news_channel : channel
        })

        return create_feedbot(nick, uri, channels)
      })
  })
}

function create_feedbot (nick, uri, channels) {
  var client = new IRC.Client(irc_server, nick, {
    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.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)
    })
  }
}

// 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] === ':'
}

if (require.main === module) {
  main()
}