git ssb

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'use strict'
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var h = require('hyperscript')
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var u = require('../util')
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var pull = require('pull-stream')
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var Scroller = require('pull-scroll')
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var ref = require('ssb-ref')
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function map(ary, iter) {
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  if(Array.isArray(ary)) return ary.map(iter)
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}
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exports.needs = {
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  message_render: 'first',
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  message_compose: 'first',
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  message_unbox: 'first',
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  sbot_log: 'first',
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  sbot_whoami: 'first',
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  avatar_image_link: 'first',
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  emoji_url: 'first'
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}
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exports.gives = {
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  builtin_tabs: true,
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  screen_view: true,
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  message_meta: true,
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  message_content_mini: true
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}
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exports.create = function (api) {
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  function unbox () {
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    return pull(
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      pull.filter(function (msg) {
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        return 'string' == typeof msg.value.content
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      }),
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      pull.map(function (msg) {
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        return api.message_unbox(msg)
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      }),
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      pull.filter(Boolean)
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    )
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  }
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  return {
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    builtin_tabs: function () {
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      return ['Direct']
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    },
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    screen_view: function (path) {
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      if(path === 'Direct') {
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        var id = require('../keys').id
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        var compose = api.message_compose(
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          {type: 'post', recps: [], private: true}, 
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            {
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            prepublish: function (msg) {
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              msg.recps = [id].concat(msg.mentions).filter(function (e) {
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                return ref.isFeed('string' === typeof e ? e : e.link)
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              })
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              if(!msg.recps.length)
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                throw new Error('Please select at least one recipient. Use @person to select recipients in the message body.')
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              return msg
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            },
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            placeholder: 'Write a private message. Use @person to select recipients.'
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          }
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          )
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        var content = h('div.column.scroller__content')
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        var div = h('div.column.scroller',
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          {style: {'overflow':'auto'}},
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          h('div.scroller__wrapper', compose, content)
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        )
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        pull(
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          api.sbot_log({old: false}),
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          unbox(),
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          Scroller(div, content, api.message_render, true, false)
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        )
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        pull(
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          u.next(api.sbot_log, {reverse: true, limit: 1000}),
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          unbox(),
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          Scroller(div, content, api.message_render, false, false, function (err) {
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            if(err) throw err
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          })
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        )
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        return div
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      }
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    },
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    message_meta: function (msg) {
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      if(msg.value.content.recps || msg.value.private)
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        return h('span.row', 'PRIVATE', map(msg.value.content.recps, function (id) {
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          return api.avatar_image_link('string' == typeof id ? id : id.link, 'thumbnail')
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        }))
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    },
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    message_content_mini: function (msg, sbot)  {
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      if (typeof msg.value.content === 'string') {
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        var icon = api.emoji_url('lock')
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        return icon
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          ? h('img', {className: 'emoji', src: icon})
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          : 'PRIVATE'
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      }
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    }
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  }
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}
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