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client.js
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module.exports = function sync(
ripple
, {} = {}
, { xrs = require('xrs/client') } = {}
){
ripple.server = xrs()
ripple.send = send(ripple)
ripple.subscribe = subscribe(ripple)
ripple.subscriptions = {}
ripple.get = get(ripple)
ripple.upload = upload(ripple)
ripple.upload.id = 0
// TODO: other than cache pushes? ans: use server.type
ripple
.server
.on('recv')
.map((data, i, n) => cache(ripple)(data, i, n))
return ripple
}
const send = ({ server }) => (name, type, value) =>
name instanceof Blob ? server.send(name, type)
: is.obj(name) ? server.send(name)
: server.send({ name, type, value })
const get = ripple => (name, k) => ripple
.subscribe(name, k)
.filter((d, i, n) => n.source.emit('stop'))
.start()
const cache = (ripple, n, k) => change => {
if (name && change.name && name != change.name) ripple.link(name, change.name)
const name = change.name = change.name || n
if (!change.type) change.type = 'update'
if (is.def(k)) change.key = `${k}.${str(change.key)}`
!change.key && change.type == 'update'
? ripple(body(change))
: set(change)(ripple.resources[name] ? ripple(name) : ripple(name, {}))
ripple.change = change
return key(k)(ripple(name))
}
const subscribe = ripple => (name, k) => {
if (is.arr(name)) return merge(name.map(n => ripple.subscribe(n, k)))
.map(d => name.reduce((p, v, i) => (p[v] = d[i], p), {}))
ripple.subscriptions[name] = ripple.subscriptions[name] || {}
if (is.arr(k)) return merge(k.map(k => ripple.subscribe(name, k)))
.map(d => key(k)(ripple(name)))
const output = emitterify().on('subscription')
output
.on('stop')
.each((d, i, n) => {
raw.subs.splice(raw.subs.indexOf(output), 1)
time(1000, () => {
if (raw.subs.length) return
raw.source.emit('stop')
ripple.subscriptions[name][k] = undefined
output.emit('end')
})
})
if (ripple.subscriptions[name][k])
output
.on('start')
.map(() => key(k)(ripple(name)))
.filter(is.def)
.map(initial => output.next(initial))
const raw = ripple.subscriptions[name][k] = ripple.subscriptions[name][k] || ripple
.send(name, 'SUBSCRIBE', k)
.map(cache(ripple, name, k))
.each(value => {
[].concat(raw.subs).map(o => o.next(value))
delete ripple.change
})
raw.subs = raw.subs || []
raw.subs.push(output)
return output
}
const upload = ripple => (name, form) => {
let index = ++ripple.upload.id
, fields = {}
, size = 0
, next = () => {
if (!files.length) return true
const { field, filename, i, blob } = files.shift()
return ripple
.send(blob, { filename, field, i, index })
.on('progress', ({ received, total }) => output.emit('progress', {
total: size
, received:
size
- (blob.size - received)
- files.reduce((acc, d) => (acc += d.blob.size), 0)
}))
.then(next)
}
const files = keys(form)
.map(field => (fields[field] = form[field], field))
.filter(field => form[field] instanceof FileList)
.map(field => {
fields[field] = []
return to.arr(form[field])
.map(f => (size += f.size, f))
.map((f, i) => ({ field, filename: f.name, i, blob: f, sent: 0 }))
})
.reduce(flatten, [])
const output = ripple.send({
files: files.length
, type: 'PREUPLOAD'
, fields
, index
, size
, name
}).once('sent', next)
return output
}
const body = ({ name, value, headers }) => ({ name, headers, body: value })
const is = require('utilise/is')
, to = require('utilise/to')
, set = require('utilise/set')
, not = require('utilise/not')
, key = require('utilise/key')
, str = require('utilise/str')
, keys = require('utilise/keys')
, time = require('utilise/time')
, extend = require('utilise/extend')
, values = require('utilise/values')
, flatten = require('utilise/flatten')
, emitterify = require('utilise/emitterify')
, all = node => arr(document.querySelectorAll(node))
, { min, pow } = Math
, { assign } = Object
, nametype = (name, type) => `(${name ? name + ', ' : ''}${type ? type : ''})`
, stream = chunks => new require('stream').Readable({
read(){
this.push(chunks.length ? new Buffer(new Uint8Array(chunks.shift())) : null)
}
})
// TODO: factor out
const merge = streams => {
const output = emitterify().on('merged')
output.streams = streams
streams.map((stream, i) =>
stream.each(value => {
stream.latest = value
const latest = streams.map(d => d.latest)
if (latest.every(is.def)) output.next(latest)
})
)
output
.once('start')
.map(d => streams.map($ => $.source.emit('start')))
output
.once('stop')
.map(d => streams.map($ => $.source.emit('stop')))
return output
}