server/models/pods.js

   1 'use strict'
   2
   3 const each = require('async/each')
   4 const mongoose = require('mongoose')
   5 const map = require('lodash/map')
   6 const validator = require('express-validator').validator
   7
   8 const constants = require('../initializers/constants')
   9
  10 const Video = mongoose.model('Video')
  11
  12 // ---------------------------------------------------------------------------
  13
  14 const PodSchema = mongoose.Schema({
  15   host: String,
  16   publicKey: String,
  17   score: { type: Number, max: constants.FRIEND_SCORE.MAX },
  18   createdDate: {
  19     type: Date,
  20     default: Date.now
  21   }
  22 })
  23
  24 PodSchema.path('host').validate(validator.isURL)
  25 PodSchema.path('publicKey').required(true)
  26 PodSchema.path('score').validate(function (value) { return !isNaN(value) })
  27
  28 PodSchema.methods = {
  29   toFormatedJSON
  30 }
  31
  32 PodSchema.statics = {
  33   countAll,
  34   incrementScores,
  35   list,
  36   listAllIds,
  37   listBadPods,
  38   load,
  39   loadByHost,
  40   removeAll
  41 }
  42
  43 PodSchema.pre('save', function (next) {
  44   const self = this
  45
  46   Pod.loadByHost(this.host, function (err, pod) {
  47     if (err) return next(err)
  48
  49     if (pod) return next(new Error('Pod already exists.'))
  50
  51     self.score = constants.FRIEND_SCORE.BASE
  52     return next()
  53   })
  54 })
  55
  56 PodSchema.pre('remove', function (next) {
  57   // Remove the videos owned by this pod too
  58   Video.listByHost(this.host, function (err, videos) {
  59     if (err) return next(err)
  60
  61     each(videos, function (video, callbackEach) {
  62       video.remove(callbackEach)
  63     }, next)
  64   })
  65 })
  66
  67 const Pod = mongoose.model('Pod', PodSchema)
  68
  69 // ------------------------------ METHODS ------------------------------
  70
  71 function toFormatedJSON () {
  72   const json = {
  73     id: this._id,
  74     host: this.host,
  75     score: this.score,
  76     createdDate: this.createdDate
  77   }
  78
  79   return json
  80 }
  81
  82 // ------------------------------ Statics ------------------------------
  83
  84 function countAll (callback) {
  85   return this.count(callback)
  86 }
  87
  88 function incrementScores (ids, value, callback) {
  89   if (!callback) callback = function () {}
  90   return this.update({ _id: { $in: ids } }, { $inc: { score: value } }, { multi: true }, callback)
  91 }
  92
  93 function list (callback) {
  94   return this.find(callback)
  95 }
  96
  97 function listAllIds (callback) {
  98   return this.find({}, { _id: 1 }, function (err, pods) {
  99     if (err) return callback(err)
 100
 101     return callback(null, map(pods, '_id'))
 102   })
 103 }
 104
 105 function listBadPods (callback) {
 106   return this.find({ score: 0 }, callback)
 107 }
 108
 109 function load (id, callback) {
 110   return this.findById(id, callback)
 111 }
 112
 113 function loadByHost (host, callback) {
 114   return this.findOne({ host }, callback)
 115 }
 116
 117 function removeAll (callback) {
 118   return this.remove({}, callback)
 119 }