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path: root/lib/app.js
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var http = require('http')
var memo = require('asyncmemo')
var lru = require('lrucache')
var pkg = require('../package')
var u = require('./util')
var pull = require('pull-stream')

var Serve = require('./serve')
var Render = require('./render')

module.exports = App

function App(sbot, config) {
  this.sbot = sbot
  this.config = config

  var conf = config.patchfoo || {}
  this.port = conf.port || 8027
  this.host = conf.host || 'localhost'

  var base = conf.base || '/'
  this.opts = {
    base: base,
    blob_base: conf.blob_base || conf.img_base || base,
    img_base: conf.img_base || base,
    emoji_base: conf.emoji_base || (base + 'emoji/'),
  }

  sbot.get = memo({cache: lru(100)}, sbot.get)
  this.getMsg = memo({cache: lru(100)}, getMsgWithValue, sbot)
  this.getAbout = memo({cache: lru(100)}, require('ssb-avatar'), sbot, sbot.id)
  this.unboxContent = memo({cache: lru(100)}, sbot.private.unbox)

  this.unboxMsg = this.unboxMsg.bind(this)

  this.render = new Render(this, this.opts)
}

App.prototype.go = function () {
  var self = this
  http.createServer(function (req, res) {
    new Serve(self, req, res).go()
  }).listen(self.port, self.host, function () {
    self.log('Listening on http://' + self.host + ':' + self.port)
  })
}

App.prototype.logPrefix = ['[' + pkg.name + ']']

App.prototype.log = function () {
  console.log.apply(console, [].concat.apply(this.logPrefix, arguments))
}

App.prototype.error = function () {
  console.error.apply(console, [].concat.apply(this.logPrefix, arguments))
}

App.prototype.unboxMsg = function (msg, cb) {
  var self = this
  var c = msg.value.content
  if (typeof c !== 'string') cb(null, msg)
  else self.unboxContent(c, function (err, content) {
    if (err) {
      self.error('unbox:', err)
      return cb(null, msg)
    }
    var m = {}
    for (var k in msg) m[k] = msg[k]
    m.value = {}
    for (var k in msg.value) m.value[k] = msg.value[k]
    m.value.content = content
    m.value.private = true
    cb(null, m)
  })
}

App.prototype.search = function (opts) {
  var search = this.sbot.fulltext && this.sbot.fulltext.search
  if (!search) return pull.error(new Error('Missing fulltext search plugin'))
  return search(opts)
}

App.prototype.getMsgDecrypted = function (key, cb) {
  var self = this
  this.getMsg(key, function (err, msg) {
    if (err) return cb(err)
    self.unboxMsg(msg, cb)
  })
}

App.prototype.publish = function (content, cb) {
  if (Array.isArray(content.recps)) {
    recps = content.recps.map(u.linkDest)
    this.sbot.private.publish(content, recps, cb)
  } else {
    this.sbot.publish(content, cb)
  }
}

function getMsgWithValue(sbot, id, cb) {
  sbot.get(id, function (err, value) {
    if (err) return cb(err)
    cb(null, {key: id, value: value})
  })
}