git ssb

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'use strict'
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const fs = require('fs')
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const dataurl = require('dataurl-')
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const hyperfile = require('hyperfile')
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const hypercrop = require('hypercrop')
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const hyperlightbox = require('hyperlightbox')
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const h = require('../../h')
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const {
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  Value, Array: MutantArray, Dict: MutantObject, Struct,
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  map, computed, when, dictToCollection
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} = require('@mmckegg/mutant')
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const pull = require('pull-stream')
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const getAvatar = require('ssb-avatar')
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const ref = require('ssb-ref')
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const visualize = require('visualize-buffer')
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const self_id = require('../../keys').id
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function crop (d, cb) {
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  var canvas = hypercrop(h('img', {src: d}))
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  return h('div.column.avatar_pic', [
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    canvas,
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    //canvas.selection,
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    h('div.row.avatar_pic__controls', [
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      h('button', {'ev-click': () => cb(null, canvas.selection.toDataURL()) }, 'okay'),
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      h('button', {'ev-click': () => cb(new Error('canceled')) }, 'cancel')
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    ])
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  ])
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}
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exports.needs = {
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  message_confirm: 'first',
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  sbot_blobs_add: 'first',
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  blob_url: 'first',
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  sbot_links: 'first',
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  avatar_name: 'first'
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}
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exports.gives = {
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  avatar_edit: 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_edit,
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    mcss: () => fs.readFileSync(__filename.replace(/js$/, 'mcss'), 'utf8')
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  }
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  function avatar_edit (id) {
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    var avatar = Struct({
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      original: Value(visualize(new Buffer(id.substring(1), 'base64'), 256).src),
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      new: MutantObject()
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    })
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    getAvatar({links: api.sbot_links}, self_id, id, (err, _avatar) => {
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      if (err) return console.error(err)
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      //don't show user has already selected an avatar.
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      if(ref.isBlob(_avatar.image))
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        avatar.original.set(api.blob_url(_avatar.image))
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    })
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    var name = Struct({
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      original: Value(api.avatar_name(id)),
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      new: Value()
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    })
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    var images = MutantArray()
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    pull(
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      api.sbot_links({dest: id, rel: 'about', values: true}),
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      pull.map(e => e.value.content.image),
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      pull.filter(e => e && 'string' == typeof e.link),
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      pull.unique('link'),
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      pull.drain(image => images.push(image) )
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    )
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    var namesRecord = MutantObject()
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    pull(
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      api.sbot_links({dest: id, rel: 'about', values: true}),
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      pull.map(e => e.value.content.name),
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      pull.filter(Boolean),
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      pull.drain(name => {
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        var n = namesRecord.get(name) || 0
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        namesRecord.put(name, n+1)
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      })
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    )
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    var names = dictToCollection(namesRecord)
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    var lb = hyperlightbox()
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    var description = '' //TODO load this in, make this editable
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    var isPossibleUpdate = computed([name.new, avatar.new], (name, avatar) => {
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      return name || avatar.link
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    })
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    var avatarSrc = computed([avatar], avatar => {
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      if (avatar.new.link) return api.blob_url(avatar.new.link)
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      else return avatar.original
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    })
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    var displayedName = computed([name], name => {
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      if (name.new) return '@'+name.new
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      else return name.original
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    })
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    return h('ProfileEdit', [
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      h('section.lightbox', lb),
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      h('section.avatar', [
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        h('section', [
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          h('img', { src: avatarSrc }),
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        ]),
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        h('footer', displayedName),
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      ]),
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      h('section.description', description),
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      h('section.aliases', [
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        h('header', 'Aliases'),
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        h('section.avatars', [
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          h('header', 'Avatars'),
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          map(images, image => h('img', {
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            'src': api.blob_url(image),
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            'ev-click': () => avatar.new.set(image)
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          })),
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          h('div.file-upload', [
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            hyperfile.asDataURL(dataUrlCallback)
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          ])
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        ]),
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        h('section.names', [
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          h('header', 'Names'),
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          h('section', [
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            map(names, n => h('div', { 'ev-click': () => name.new.set(n.key()) }, [
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              h('div.name', n.key),
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              h('div.count', n.value)
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            ])),
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            h('input', {
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              placeholder: ' + another name',
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              'ev-keyup': e => name.new.set(e.target.value)
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            })
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          ])
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        ]),
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        when(isPossibleUpdate, h('section.action', [
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          h('button.cancel', { 'ev-click': handleCancelClick }, 'cancel'),
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          h('button.confirm', { 'ev-click': handleUpdateClick }, 'confirm changes')
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        ]))
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      ])
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    ])
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    function dataUrlCallback (data) {
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      var el = crop(data, (err, data) => {
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        if(data) {
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          var _data = dataurl.parse(data)
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          pull(
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            pull.once(_data.data),
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            api.sbot_blobs_add((err, hash) => {
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              //TODO. Alerts are EVIL.
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              //I use them only in a moment of weakness.
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              if(err) return alert(err.stack)
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              avatar.new.set({
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                link: hash,
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                size: _data.data.length,
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                type: _data.mimetype,
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                width: 512,
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                height: 512
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              })
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            })
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          )
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        }
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        lb.close()
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      })
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      lb.show(el)
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    }
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    function handleCancelClick () {
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      name.new.set(null)
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      avatar.new.set({})
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    }
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    function handleUpdateClick () {
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      const newName = name.new()
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      const newAvatar = avatar.new()
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      const msg = {
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        type: 'about',
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        about: id
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      }
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      if (newName) msg.name = newName
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      if (newAvatar.link) msg.image = newAvatar
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      api.message_confirm(msg)
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    }
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  }
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}
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