git ssb

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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 TextNodeSearcher = require('text-node-searcher')
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exports.needs = {
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  build_scroller: 'first',
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  message_render: 'first',
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  sbot_log: 'first'
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}
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exports.gives = 'screen_view'
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var whitespace = /\s+/
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function andSearch(terms, inputs) {
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  for(var i = 0; i < terms.length; i++) {
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    var match = false
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    for(var j = 0; j < inputs.length; j++) {
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      if(terms[i].test(inputs[j])) match = true
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    }
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    //if a term was not matched by anything, filter this one
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    if(!match) return false
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  }
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  return true
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}
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function searchFilter(terms) {
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  return function (msg) {
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    var c = msg && msg.value && msg.value.content
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    return c && (
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      msg.key == terms[0] ||
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      andSearch(terms.map(function (term) {
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        return new RegExp('\\b'+term+'\\b', 'i')
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      }), [c.text, c.name, c.title])
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    )
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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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exports.create = function (api) {
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  return function (path) {
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    if(path[0] === '?') {
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      var query = path.substr(1).trim().split(whitespace)
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      var _matches = searchFilter(query)
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      var total = 0, matches = 0
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      var header = h('div.search_header', '')
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      var { container, content } = api.build_scroller({ prepend: header})
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      container.id = path // helps tabs find this tab
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      function matchesQuery (data) {
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        total++
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        var m = _matches(data)
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        if(m) matches++
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        header.textContent = 'searched:'+total+', found:'+matches
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        return m
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      }
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      function renderMsg(msg) {
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        var el = api.message_render(msg)
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        highlight(el, createOrRegExp(query))
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        return el
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      }
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      pull(
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        api.sbot_log({old: false}),
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        pull.filter(matchesQuery),
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        Scroller(container, content, renderMsg, true, false)
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      )
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      pull(
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        u.next(api.sbot_log, {reverse: true, limit: 500, live: false}),
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        pull.filter(matchesQuery),
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        Scroller(container, content, renderMsg, false, false)
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      )
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      return container
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    }
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  }
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}
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