| views/public-feed.jsView |
|---|
| 1 | +var SortedArray = require('sorted-array-functions') |
| 2 | +var Value = require('@mmckegg/mutant/value') |
| 3 | +var MutantMap = require('@mmckegg/mutant/map') |
| 4 | +var h = require('@mmckegg/mutant/html-element') |
| 5 | +var when = require('@mmckegg/mutant/when') |
| 6 | +var m = require('../lib/h') |
| 7 | + |
| 8 | +var pull = require('pull-stream') |
| 9 | + |
| 10 | +var plugs = require('patchbay/plugs') |
| 11 | +var message_render = plugs.first(exports.message_render = []) |
| 12 | +var message_compose = plugs.first(exports.message_compose = []) |
| 13 | +var sbot_log = plugs.first(exports.sbot_log = []) |
| 14 | +var avatar_name = plugs.first(exports.avatar_name = []) |
| 15 | +var avatar_link = plugs.first(exports.avatar_link = []) |
| 16 | +var message_link = plugs.first(exports.message_link = []) |
| 17 | + |
| 18 | +exports.screen_view = function (path, sbot) { |
| 19 | + if (path === '/public') { |
| 20 | + var sync = Value(false) |
| 21 | + var events = Value([]) |
| 22 | + |
| 23 | + var content = h('div.column.scroller__content', [ |
| 24 | + MutantMap(events, (group) => { |
| 25 | + if (group.type === 'message') { |
| 26 | + var meta = null |
| 27 | + var replies = group.replies.slice(-3).map(message_render) |
| 28 | + var renderedMessage = group.message ? message_render(group.message) : null |
| 29 | + if (renderedMessage) { |
| 30 | + if (group.lastUpdateType === 'reply') { |
| 31 | + meta = m('div.meta', [ |
| 32 | + manyPeople(group.repliesFrom), ' replied' |
| 33 | + ]) |
| 34 | + } else if (group.lastUpdateType === 'dig') { |
| 35 | + meta = m('div.meta', [ |
| 36 | + manyPeople(group.digs), ' dug this message' |
| 37 | + ]) |
| 38 | + } |
| 39 | + |
| 40 | + return m('FeedEvent', [ |
| 41 | + meta, |
| 42 | + renderedMessage, |
| 43 | + when(replies.length, [ |
| 44 | + when(group.replies > replies.length, |
| 45 | + m('a.full', {href: `#${group.messageId}`}, ['View full thread']) |
| 46 | + ), |
| 47 | + m('div.replies', replies) |
| 48 | + ]) |
| 49 | + ]) |
| 50 | + } else { |
| 51 | + if (group.lastUpdateType === 'reply') { |
| 52 | + meta = m('div.meta', [ |
| 53 | + manyPeople(group.repliesFrom), ' replied to ', message_link(group.messageId) |
| 54 | + ]) |
| 55 | + } else if (group.lastUpdateType === 'dig') { |
| 56 | + meta = m('div.meta', [ |
| 57 | + manyPeople(group.digs), ' dug ', message_link(group.messageId) |
| 58 | + ]) |
| 59 | + } |
| 60 | + |
| 61 | + if (meta || replies.length) { |
| 62 | + return m('FeedEvent', [ |
| 63 | + meta, m('div.replies', replies) |
| 64 | + ]) |
| 65 | + } |
| 66 | + } |
| 67 | + } else if (group.type === 'follow') { |
| 68 | + return m('FeedEvent -follow', [ |
| 69 | + m('div.meta', [ |
| 70 | + person(group.id), ' followed ', manyPeople(group.contacts) |
| 71 | + ]) |
| 72 | + ]) |
| 73 | + } |
| 74 | + }, {maxTime: 5}) |
| 75 | + ]) |
| 76 | + |
| 77 | + var div = h('div.column.scroller', { |
| 78 | + style: { |
| 79 | + 'overflow': 'auto' |
| 80 | + } |
| 81 | + }, [ |
| 82 | + h('div.scroller__wrapper', [ |
| 83 | + message_compose({type: 'post'}, {placeholder: 'Write a public message'}), |
| 84 | + content |
| 85 | + ]) |
| 86 | + ]) |
| 87 | + |
| 88 | + pull( |
| 89 | + sbot_log({reverse: true, limit: 500, live: false}), |
| 90 | + pull.collect((err, values) => { |
| 91 | + if (err) throw err |
| 92 | + events.set(groupMessages(values)) |
| 93 | + sync.set(true) |
| 94 | + }) |
| 95 | + ) |
| 96 | + |
| 97 | + |
| 98 | + |
| 99 | + |
| 100 | + |
| 101 | + |
| 102 | + |
| 103 | + |
| 104 | + |
| 105 | + |
| 106 | + |
| 107 | + |
| 108 | + return div |
| 109 | + } |
| 110 | +} |
| 111 | + |
| 112 | +function person (id) { |
| 113 | + return avatar_link(id, avatar_name(id), '') |
| 114 | +} |
| 115 | + |
| 116 | +function manyPeople (ids) { |
| 117 | + ids = Array.from(ids) |
| 118 | + var featuredIds = ids.slice(-3).reverse() |
| 119 | + |
| 120 | + if (ids.length > 3) { |
| 121 | + return [ |
| 122 | + person(featuredIds[0]), ', ', |
| 123 | + person(featuredIds[1]), |
| 124 | + ' and ', ids.length - 2, ' others' |
| 125 | + ] |
| 126 | + } else if (ids.length === 3) { |
| 127 | + return [ |
| 128 | + person(featuredIds[0]), ', ', |
| 129 | + person(featuredIds[1]), ' and ', |
| 130 | + person(featuredIds[2]) |
| 131 | + ] |
| 132 | + } else if (ids.length === 2) { |
| 133 | + return [ |
| 134 | + person(featuredIds[0]), ' and ', |
| 135 | + person(featuredIds[1]) |
| 136 | + ] |
| 137 | + } else { |
| 138 | + return person(featuredIds[0]) |
| 139 | + } |
| 140 | +} |
| 141 | + |
| 142 | +function groupMessages (messages) { |
| 143 | + var follows = {} |
| 144 | + var messageUpdates = {} |
| 145 | + reverseForEach(messages, function (msg) { |
| 146 | + var c = msg.value.content |
| 147 | + if (c.type === 'contact') { |
| 148 | + updateContact(msg, follows) |
| 149 | + } else if (c.type === 'vote') { |
| 150 | + if (c.vote && c.vote.link) { |
| 151 | + const group = ensureMessage(c.root, messageUpdates) |
| 152 | + if (c.vote.value > 1) { |
| 153 | + group.lastUpdateType = 'vote' |
| 154 | + group.digs.add(msg.value.author) |
| 155 | + group.updated = msg.timestamp |
| 156 | + } else { |
| 157 | + group.digs.delete(msg.value.author) |
| 158 | + } |
| 159 | + } |
| 160 | + } else { |
| 161 | + if (c.root) { |
| 162 | + const group = ensureMessage(c.root, messageUpdates) |
| 163 | + group.lastUpdateType = 'reply' |
| 164 | + group.repliesFrom.add(msg.value.author) |
| 165 | + group.replies.push(msg) |
| 166 | + group.updated = msg.timestamp |
| 167 | + } else { |
| 168 | + const group = ensureMessage(msg.key, messageUpdates) |
| 169 | + group.lastUpdateType = 'post' |
| 170 | + group.updated = msg.timestamp |
| 171 | + group.message = msg |
| 172 | + } |
| 173 | + } |
| 174 | + }) |
| 175 | + |
| 176 | + var result = [] |
| 177 | + Object.keys(follows).forEach((key) => { |
| 178 | + SortedArray.add(result, follows[key], compareUpdated) |
| 179 | + }) |
| 180 | + Object.keys(messageUpdates).forEach((key) => { |
| 181 | + SortedArray.add(result, messageUpdates[key], compareUpdated) |
| 182 | + }) |
| 183 | + return result |
| 184 | +} |
| 185 | + |
| 186 | +function compareUpdated (a, b) { |
| 187 | + return b.updated - a.updated |
| 188 | +} |
| 189 | + |
| 190 | +function reverseForEach (items, fn) { |
| 191 | + var i = items.length - 1 |
| 192 | + var start = Date.now() |
| 193 | + nextBatch() |
| 194 | + |
| 195 | + function nextBatch () { |
| 196 | + while (i >= 0 && Date.now() - start < 10) { |
| 197 | + fn(items[i], i) |
| 198 | + i -= 1 |
| 199 | + } |
| 200 | + |
| 201 | + if (i > 0) { |
| 202 | + setImmediate(nextBatch) |
| 203 | + } |
| 204 | + } |
| 205 | +} |
| 206 | + |
| 207 | +function updateContact (msg, groups) { |
| 208 | + var c = msg.value.content |
| 209 | + var id = msg.value.author |
| 210 | + var group = groups[id] |
| 211 | + if (c.following) { |
| 212 | + if (!group) { |
| 213 | + group = groups[id] = { |
| 214 | + type: 'follow', |
| 215 | + contacts: new Set(), |
| 216 | + updated: 0, |
| 217 | + id: id |
| 218 | + } |
| 219 | + } |
| 220 | + group.contacts.add(c.contact) |
| 221 | + group.updated = msg.timestamp |
| 222 | + } else { |
| 223 | + if (group) { |
| 224 | + group.contacts.delete(c.contact) |
| 225 | + if (!group.contacts.size) { |
| 226 | + delete groups[id] |
| 227 | + } |
| 228 | + } |
| 229 | + } |
| 230 | +} |
| 231 | + |
| 232 | +function ensureMessage (id, groups) { |
| 233 | + var group = groups[id] |
| 234 | + if (!group) { |
| 235 | + group = groups[id] = { |
| 236 | + type: 'message', |
| 237 | + repliesFrom: new Set(), |
| 238 | + replies: [], |
| 239 | + message: null, |
| 240 | + messageId: id, |
| 241 | + digs: new Set(), |
| 242 | + updated: 0 |
| 243 | + } |
| 244 | + } |
| 245 | + return group |
| 246 | +} |