git ssb

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const fs = require('fs')
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const h = require('../../h')
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const pull = require('pull-stream')
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const { unique, collect, drain } = pull
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exports.needs = {
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  avatar_image_link: 'first',
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  avatar_action: 'map',
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  avatar_edit: 'first',
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  follows: 'first',
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  followers: 'first'
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}
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exports.gives = {
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  avatar_profile: true,
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  mcss: true
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}
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exports.create = function (api) {
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  return { 
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    avatar_profile,
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    mcss: () => fs.readFileSync(__filename.replace(/js$/, 'mcss'), 'utf8')
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  }
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  function avatar_profile (id) {
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    var friends_el = h('div.friends', [
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      h('header', 'Friends')
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    ])
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    var follows_el = h('div.follows', [
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      h('header', 'Follows')
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    ])
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    var followers_el = h('div.followers', [
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      h('header', 'Followers')
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    ])
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    var a, b
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    pull(
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      api.follows(id),
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      unique(), 
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      collect((err, ary = []) => { 
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        a = ary; next() 
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      })
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    )
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    pull(
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      api.followers(id),
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      unique(), 
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      collect((err, ary = {}) => {
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        b = ary; next()
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      })
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    )
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    function next () {
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      if(!(a && b)) return
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      var _c = [], _a = [], _b = []
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      a.forEach(id => {
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        if(!~b.indexOf(id)) _a.push(id)
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        else               _c.push(id)
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      })
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      b.forEach(id => {
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        if(!~_c.indexOf(id)) _b.push(id)
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      })
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      add(_c, friends_el)
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      add(_a, follows_el)
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      add(_b, followers_el)
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      function add (ary, el) {
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        ary.forEach(id => el.appendChild(api.avatar_image_link(id)) )
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      }
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    }
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    return h('Profile', [
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      h('section.edit', api.avatar_edit(id)),
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      h('section.action', api.avatar_action(id)),
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      h('section.relationships', [
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        friends_el,
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        follows_el,
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        followers_el
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      ])
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    ])
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  }
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}
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