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var pull = require('pull-stream')
var defer = require('pull-defer')
var many = require('pull-many')
module.exports = Contacts
function Contacts(sbot) {
if (!(this instanceof Contacts)) return new Contacts(sbot)
this.sbot = sbot
}
Contacts.prototype._createContactStream = function (source, dest) {
if (!this.sbot.links) return pull.error(new Error('missing sbot.links'))
return pull(
this.sbot.links({
source: source,
dest: dest,
rel: 'contact',
values: true,
reverse: true
}),
pull.filter(function (msg) {
var c = msg && msg.value && msg.value.content
return c && c.type === 'contact' && (!dest || c.contact === dest)
}),
pull.map(function (msg) {
var c = msg && msg.value && msg.value.content
return {
source: msg.value.author,
dest: c.contact,
msg: msg,
value: c.following ? true : c.flagged || c.blocking ? false : null
}
}),
pull.unique(function (edge) {
return edge.source + '-' + edge.dest
})
)
}
Contacts.prototype.createFollowsStream = function (id) {
return pull(
this._createContactStream(id, null),
pull.filter('value'),
pull.map('dest')
)
}
Contacts.prototype.createFollowersStream = function (id) {
return pull(
this._createContactStream(null, id),
pull.filter('value'),
pull.map('source')
)
}
Contacts.prototype.createFollowedFollowersStream = function (source, dest) {
var follows = {}, followers = {}
return pull(
many([
this._createContactStream(source, null),
this._createContactStream(null, dest)
]),
pull.filter('value'),
pull.map(function (edge) {
if (edge.source === source) {
if (followers[edge.dest]) {
delete followers[edge.dest]
return edge.dest
} else {
follows[edge.dest] = true
}
} else if (edge.dest === dest) {
if (follows[edge.source]) {
delete follows[edge.source]
return edge.source
} else {
followers[edge.source] = true
}
}
}),
pull.filter()
)
}
Contacts.prototype.createFriendsStream = function (opts, endCb) {
if (typeof opts === 'string') opts = {id: opts}
var id = opts.id
var msgIds = opts.msgIds
var follows = {}, followers = {}
var blocks = {}, blockers = {}
var enemies = opts.enemies && {}
return pull(
many([
this._createContactStream(id, null),
this._createContactStream(null, id)
]),
pull.map(function (edge) {
if (edge.value) {
if (edge.source === id) {
if (followers[edge.dest]) {
var item2 = followers[edge.dest]
delete followers[edge.dest]
return msgIds ? {feed: edge.dest, msg: edge.msg, msg2: item2.msg} : edge.dest
} else {
follows[edge.dest] = msgIds ? {feed: edge.dest, msg: edge.msg} : edge.dest
}
} else if (edge.dest === id) {
if (follows[edge.source]) {
var item2 = follows[edge.source]
delete follows[edge.source]
return msgIds ? {feed: edge.source, msg: edge.msg, msg2: item2.msg} : edge.source
} else {
followers[edge.source] = msgIds ? {feed: edge.source, msg: edge.msg} : edge.source
}
}
} else if (edge.value === false) {
if (edge.source === id) {
if (enemies && blockers[edge.dest]) {
var item2 = blockers[edge.dest]
delete blockers[edge.dest]
enemies[edge.dest] = msgIds ? {feed: edge.dest, msg: edge.msg, msg2: item2.msg} : edge.dest
} else {
blocks[edge.dest] = msgIds ? {feed: edge.dest, msg: edge.msg} : edge.dest
}
} else if (edge.dest === id) {
if (enemies && blocks[edge.source]) {
var item2 = blocks[edge.source]
delete blocks[edge.source]
enemies[edge.source] = msgIds ? {feed: edge.source, msg: edge.msg, msg2: item2.msg} : edge.source
} else {
blockers[edge.source] = msgIds ? {feed: edge.source, msg: edge.msg} : edge.source
}
}
}
}),
pull.filter(),
endCb && function (read) {
return function (abort, cb) {
read(abort, function (end, data) {
cb(end, data)
if (end) endCb(end === true ? null : end, {
followers: Object.values(followers),
follows: Object.values(follows),
blocks: Object.values(blocks),
blockers: Object.values(blockers),
enemies: Object.values(enemies),
})
})
}
}
)
}
Contacts.prototype.createContactStreams = function (opts) {
var msgIds = opts.msgIds
var follows = defer.source()
var followers = defer.source()
var blocks = defer.source()
var blockers = defer.source()
var enemies = defer.source()
var friends = this.createFriendsStream(opts, function (err, more) {
follows.resolve(err ? pull.error(err) : pull.values(more.follows))
followers.resolve(err ? pull.error(err) : pull.values(more.followers))
blocks.resolve(err ? pull.error(err) : pull.values(more.blocks))
blockers.resolve(err ? pull.error(err) : pull.values(more.blockers))
enemies.resolve(err ? pull.error(err) : pull.values(more.enemies))
})
return {
friends: friends,
follows: follows,
followers: followers,
enemies: enemies,
blocks: blocks,
blockers: blockers,
}
}
|
