git ssb

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const nest = require('depnest')
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const { h, Struct, Value } = require('mutant')
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const pull = require('pull-stream')
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const Scroller = require('pull-scroll')
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const TextNodeSearcher = require('text-node-searcher')
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exports.gives = nest('app.page.search')
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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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  'message.html.render': 'first',
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  'sbot.pull.log': 'first',
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  'sbot.pull.stream': 'first'
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})
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var whitespace = /\s+/
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// TODO : if query is a cypherlink, display backlinks to that cypherlink
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exports.create = function (api) {
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  return nest('app.page.search', searchPage)
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  function searchPage (location) {
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    const query = location.query.trim()
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    const search = Struct({
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      fulltext: Struct({
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        isDone: Value(false)
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      }),
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      matches: Value(0)
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    })
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    const searchHeader = h('Search', [
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      h('header', h('h1', query))
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    ])
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    const { filterMenu, filterDownThrough, resetFeed } = api.app.html.filter(draw)
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    const { container, content } = api.app.html.scroller({ prepend: [searchHeader, filterMenu] })
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    function renderMsg (msg) {
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      var el = api.message.html.render(msg, { showTitle: true })
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      var queryTerms = query.split(whitespace)
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      highlight(el, createOrRegExp(queryTerms))
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      return el
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    }
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    function draw () {
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      resetFeed({ container, content })
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      // TODO figure out how to step on kinda orderless search results
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      pull(
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        // api.sbot.pull.stream(sbot => next(sbot.search.query, { query, limit: 500 })),
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        api.sbot.pull.stream(sbot => sbot.search.query({ query, limit: 500 })),
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        filterDownThrough(),
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        pull.through(() => search.matches.set(search.matches() + 1)),
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        Scroller(container, content, renderMsg, false, false)
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      )
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    }
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    draw()
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    container.title = '?' + query
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    return container
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  }
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}
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function createOrRegExp (ary) {
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  return new RegExp(ary.map(function (e) {
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    return '\\b' + e + '\\b'
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  }).join('|'), 'i')
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}
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function highlight (el, query) {
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  var searcher = new TextNodeSearcher({ container: el })
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  searcher.query = query
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  searcher.highlight()
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  return el
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}
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