git ssb

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const nest = require('depnest')
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const { h } = require('mutant')
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const pull = require('pull-stream')
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const pullAbortable = require('pull-abortable')
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const Scroller = require('pull-scroll')
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const next = require('pull-next-query')
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const merge = require('lodash/merge')
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exports.gives = nest({
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  'app.html.menuItem': true,
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  'app.page.public': true
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})
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exports.needs = nest({
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  'app.html.filter': 'first',
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  'app.html.scroller': 'first',
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  'app.sync.goTo': 'first',
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  // 'feed.pull.public': 'first',
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  'sbot.pull.stream': 'first',
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  'message.html.compose': 'first',
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  'message.html.render': 'first'
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})
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exports.create = function (api) {
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  return nest({
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    'app.html.menuItem': menuItem,
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    'app.page.public': publicPage
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  })
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  function menuItem () {
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    return h('a', {
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      'ev-click': () => api.app.sync.goTo({ page: 'public' })
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    }, '/public')
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  }
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  function publicPage (location) {
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    const composer = api.message.html.compose({
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      location,
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      meta: { type: 'post' },
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      placeholder: 'Write a public message'
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    })
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    const { filterMenu, filterDownThrough, filterUpThrough, resetFeed } = api.app.html.filter(draw)
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    const { container, content } = api.app.html.scroller({ prepend: [composer, filterMenu], className: 'PublicFeed' })
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    var abortLive = pullAbortable()
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    var abortReverse = pullAbortable()
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    const createStream = (opts) => api.sbot.pull.stream(server => {
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      const _opts = merge({}, opts, {
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        query: [{
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          $filter: {
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            timestamp: { $gt: 0, $lt: undefined },
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            value: {
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              content: { recps: { $not: true } }
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            }
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          }
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        }],
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        limit: 100
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      })
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      return next(server.query.read, _opts, ['timestamp'])
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    })
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    // TODO : build a pull-stream which has seperate state + rendering
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    function draw () {
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      resetFeed({ container, content })
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      const render = (msg) => {
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        // if (msg.value.content.type === 'about') debugger
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        return api.message.html.render(msg, { showTitle: true })
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      }
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      // TODO - change to use ssb-query, streamed by publish time
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      abortLive.abort()
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      abortLive = pullAbortable()
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      pull(
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        createStream({ old: false, live: true }),
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        abortLive,
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        filterUpThrough(),
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        Scroller(container, content, render, true, false)
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      )
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      abortReverse.abort()
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      abortReverse = pullAbortable()
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      pull(
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        createStream({ reverse: true, live: false }),
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        abortReverse,
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        filterDownThrough(),
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        Scroller(container, content, render, false, false)
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      )
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    }
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    draw()
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    container.title = '/public'
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    return container
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  }
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}
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