git ssb

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var mentions = require('ssb-mentions')
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/*
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  when javascript is turned off we can't use auto predict.
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  this method lets you just enter the names as raw mentions,
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  @{name} and then looks up the names you might use.
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  * if it's unambigious it uses that key.
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  * if there is more than one with that name, but only
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    one that you call that name (other peers can use the same name)
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    then it chooses the one you use.
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  * if there are more than one feed you call that name,
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    make a dropdown select which one you will mention.
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*/
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function simpleAt (text) {
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  var rx = /(?:^|\s)(@[\w\-_\d\!]+)/g
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  var a = []
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  var match = rx.exec(text)
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  while(match) {
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    a.push({name:match[1].substring(1), link: false})
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    match = rx.exec(text)
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  }
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  return a
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}
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function _mentions (text, cb) {
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  var m = mentions(text)
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  simpleAt(text).forEach(function (e) {
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    for(var i = 0; i < m.length; i++)
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      if(m[i].name == e.name) return
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    m.push(e)
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  })
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  return m
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}
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function lookup (sbot, name, cb) {
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  var mention = {name: name, link: null}
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  sbot.names.getSignifies(name, function (err, names) {
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    if(names && names.length) {
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      names = names.filter(function (e) {
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        return e.name == name
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      })
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      var first = names[0]
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      names = names.filter(function (e, i) {
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        return !i || first.id !== e.id
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      })
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      if(names.length) {
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        var _names = names.filter(function (e) {
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          return e.named === name
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        })
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        if(_names.length === 1)
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          return cb(null, _names[0].id)
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      }
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      if(names.length === 1)
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        cb(null, first.id)
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      else
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        cb(null, null, names)
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    }
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  })
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}
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module.exports = function (sbot, text, cb) {
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  var m = _mentions(text), n = 1, ambigious = []
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  m.forEach(function (mention, i) {
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    if(mention.name && mention.link === false) {
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      n++
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      lookup(sbot, mention.name, function (err,  link, names) {
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        if(err) return next(err)
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        if(link) mention.link = link
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        else ambigious.push(names)
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        next()
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      })
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    }
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  })
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  next()
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  function next (err) {
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    if(n>=0 && err) {
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      n = -1
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      cb(err)
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    }
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    if(--n) return
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    cb(null, m, ambigious)
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  }
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}
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if(!module.parent)
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  require('ssb-client')(function (err, sbot) {
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    if(err) throw err
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    module.exports(sbot, process.argv[2], function (err, data, ambigious) {
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      if(err) throw err
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      console.log(JSON.stringify(data, null, 2))
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      console.log(JSON.stringify(ambigious, null, 2))
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      sbot.close()
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    })
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  })
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