git ssb

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var FlumeReduce = require('flumeview-reduce')
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var normalizeChannel = require('../lib/normalize-channel')
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module.exports = function (ssb, config) {
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  return ssb._flumeUse('patchwork-channels', FlumeReduce(1, reduce, map))
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}
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function reduce (result, item) {
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  if (!result) result = {}
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  if (item) {
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    for (var channel in item) {
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      var value = result[channel]
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      if (!value) {
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        value = result[channel] = {count: 0, timestamp: 0}
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      }
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      value.count += 1
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      if (item[channel].timestamp > value.timestamp) {
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        value.timestamp = item[channel].timestamp
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      }
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    }
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  }
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  return result
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}
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function map (msg) {
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  if (msg.value.content) {
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    var isLike = msg.value.content.type === 'vote'
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    var isSubscription = msg.value.content.type === 'channel'
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    var channel = normalizeChannel(msg.value.content.channel)
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    // filter out likes and subscriptions
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    if (channel && !isLike && !isSubscription) {
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      return {
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        [channel]: {timestamp: msg.timestamp}
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      }
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    }
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  }
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}
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