git ssb

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var Follower = require('../follower')
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var pull = require('pull-stream')
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var path = require('path')
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var ltgt = require('ltgt')
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var u = require('../util')
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module.exports = function (db) {
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  var indexPath = path.join(db.location, 'feed')
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  var index = Follower(db, indexPath, 1, function (data) {
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    if(data.sync) return
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    return {
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      key: [data.value.timestamp, data.value.author],
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      value: data.key, type: 'put'
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    }
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  })
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  index.createFeedStream = function (opts) {
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    opts = u.options(opts)
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    //mutates opts
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    ltgt.toLtgt(opts, opts, function (value) {
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      return [value, u.lo]
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    }, u.lo, u.hi)
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    var _keys = opts.keys
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    var _values = opts.values
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    opts.keys = false
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    opts.values = true
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    return pull(
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      index.read(opts),
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      db.lookup(_keys, _values) //XXX
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    )
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  }
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  return index
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}
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