git ssb

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var nest = require('depnest')
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var ref = require('ssb-ref')
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exports.needs = nest({
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  'contact.obs.following': 'first',
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  'sbot.async.publish': 'first',
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  'sbot.async.friendsGet': 'first'
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})
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exports.gives = nest({
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  'contact.async': ['follow', 'unfollow', 'followerOf', 'block', 'unblock']
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})
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exports.create = function (api) {
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  return nest({
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    'contact.async': {follow, unfollow, followerOf, block, unblock}
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  })
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  function followerOf (source, dest, cb) {
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    api.sbot.async.friendsGet({source: source, dest: dest}, cb)
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  }
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  function follow (id, cb) {
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    if (!ref.isFeed(id)) throw new Error('a feed id must be specified')
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    api.sbot.async.publish({
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      type: 'contact',
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      contact: id,
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      following: true
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    }, cb)
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  }
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  function unfollow (id, cb) {
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    if (!ref.isFeed(id)) throw new Error('a feed id must be specified')
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    api.sbot.async.publish({
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      type: 'contact',
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      contact: id,
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      following: false
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    }, cb)
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  }
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  function block (id, cb) {
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    if (!ref.isFeed(id)) throw new Error('a feed id must be specified')
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    api.sbot.async.publish({
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      type: 'contact',
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      contact: id,
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      blocking: true
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    }, cb)
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  }
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  function unblock (id, cb) {
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    if (!ref.isFeed(id)) throw new Error('a feed id must be specified')
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    api.sbot.async.publish({
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      type: 'contact',
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      contact: id,
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      blocking: false
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    }, cb)
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  }
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}
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