git ssb

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var Dat = require('dat-node')
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var uri = require('urijs')
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var pull = require('pull-stream')
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var self = module.exports = {
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  extractLinksAndSeed: function(err, logs, shareFolder, useTemp) {
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    if (err) throw err;
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    console.log("Found " + logs.length)
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    logs.forEach(msg => {
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      uri.withinString(msg.value.content.text, (datLink) => {
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        if (!datLink.startsWith("dat://")) return
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        // issue #360 in uri.js
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        var bracket = datLink.indexOf("]")
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        if (bracket != -1)
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          datLink = datLink.substring(0, bracket)
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        if (!useTemp)
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          console.log("Saving to:", shareFolder + "/" + datLink.substring(6))
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        Dat(shareFolder + "/" + datLink.substring(6), {
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	  key: datLink,
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          temp: useTemp
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        }, function (err, dat) {
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	  if (err) throw err
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	  console.log("sharing:", datLink)
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	  dat.joinNetwork()
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        })
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      })
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    })
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  },
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  getAll: function(sbot, shareFolder, useTemp) {
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    console.log("Looking for dat links in all feeds")
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    pull(
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      sbot.createLogStream({ reverse: true, limit: 15000 }),
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      pull.filter((msg) => {
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        return !msg.value ||
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	  msg.value.content.type == 'post' &&
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	  typeof msg.value.content.text == "string" &&
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	  msg.value.content.text.indexOf("dat://") != -1
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      }),
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      pull.collect((err, logs) => self.extractLinksAndSeed(err, logs,
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                                                           shareFolder,
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                                                           useTemp))
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    )
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  },
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  messagesFromPeopleIFollow: function(sbot, following,
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                                      channelSubscriptions,
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                                      shareFolder, useTemp) {
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    console.log("users:", following)
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    console.log("channels:", channelSubscriptions)
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    pull(
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      sbot.createLogStream({ reverse: true, limit: 15000 }),
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      pull.filter((msg) => {
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        return !msg.value ||
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	  ((msg.value.author in following ||
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	    msg.value.content.channel in channelSubscriptions)
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           && msg.value.content.type == 'post' &&
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	   typeof msg.value.content.text == "string" &&
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	   msg.value.content.text.indexOf("dat://") != -1)
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      }),
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      pull.collect((err, logs) => self.extractLinksAndSeed(err, logs,
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                                                           shareFolder,
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                                                           useTemp))
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    )
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  },
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  getFromPeopleIFollow: function(sbot, shareFolder, useTemp) {
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    var following = []
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    var channelSubscriptions = []
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    console.log("Looking for dat links in people i follow")
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    sbot.whoami((err, feed) => {
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      pull(
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        sbot.createUserStream({ id: feed.id }),
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        pull.filter((msg) => {
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	  return !msg.value ||
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	    msg.value.content.type == 'contact' ||
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	    (msg.value.content.type == 'channel' &&
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	     typeof msg.value.content.subscribed != 'undefined')
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        }),
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        pull.collect(function (err, msgs) {
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          msgs.forEach((msg) => {
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	    if (msg.value.content.type == 'contact')
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	    {
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	      if (msg.value.content.following)
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	        following[msg.value.content.contact] = 1
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	      else
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	        delete following[msg.value.content.contact]
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	    }
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	    else // channel subscription
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	    {
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	      if (msg.value.content.subscribed)
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	        channelSubscriptions[msg.value.content.channel] = 1
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	      else
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	        delete channelSubscriptions[msg.value.content.channel]
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	    }
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          })
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          self.messagesFromPeopleIFollow(sbot, following,
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                                         channelSubscriptions,
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                                         shareFolder, useTemp)
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        })
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      )
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    })
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  }
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}
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