git ssb

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var nest = require('depnest')
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var { h, when, send, computed } = require('mutant')
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exports.gives = nest('contact.html.followToggle')
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exports.needs = nest({
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  'intl.sync.i18n': 'first',
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  'keys.sync.id': 'first',
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  'contact.async.follow': 'first',
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  'contact.async.unfollow': 'first',
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  'contact.async.block': 'first',
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  'contact.async.unblock': 'first',
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  'contact.obs.following': 'first',
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  'contact.obs.followers': 'first',
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  'contact.obs.blockers': 'first'
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})
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exports.create = function (api) {
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  var i18n = api.intl.sync.i18n
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  return nest('contact.html.followToggle', function (id, opts) {
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    var yourId = api.keys.sync.id()
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    var yourFollows = api.contact.obs.following(yourId)
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    var rawFollowers = api.contact.obs.followers(id)
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    var rawFollowing = api.contact.obs.following(id)
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    var friends = computed([rawFollowing, rawFollowers], (following, followers) => {
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      return Array.from(following).filter(follow => followers.includes(follow))
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    })
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    var following = computed([rawFollowing, friends], (following, friends) => {
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      return Array.from(following).filter(follow => !friends.includes(follow))
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    })
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    var isFriends = computed([friends], function (friends) {
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      return friends.includes(yourId)
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    })
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    var followsYou = computed([following], function (followsYou) {
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      return followsYou.includes(yourId)
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    })
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    var youFollow = computed([yourFollows], function (youFollow) {
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      return youFollow.includes(id)
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    })
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    var blockers = api.contact.obs.blockers(id)
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    var youBlock = computed(blockers, function (blockers) {
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      return blockers.includes(yourId)
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    })
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    var showBlockButton = computed([opts && opts.block], (block) => block !== false)
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    if (id !== yourId) {
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      return when(youBlock, [
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        h('a.ToggleButton.-unblocking', {
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          'href': '#',
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          'title': i18n('Click to unblock'),
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          'ev-click': send(api.contact.async.unblock, id)
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        }, i18n('Blocked'))
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      ], [
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        when(youFollow,
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          h('a.ToggleButton.-unsubscribe', {
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            'href': '#',
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            'title': i18n('Click to unfollow'),
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            'ev-click': send(api.contact.async.unfollow, id)
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          }, when(isFriends, i18n('Friends'), i18n('Following'))),
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          h('a.ToggleButton.-subscribe', {
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            'href': '#',
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            'ev-click': send(api.contact.async.follow, id)
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          }, when(followsYou, i18n('Follow Back'), i18n('Follow')))
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        ),
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        when(showBlockButton, h('a.ToggleButton.-blocking', {
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          'href': '#',
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          'title': i18n('Click to block syncing with this person and hide their posts'),
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          'ev-click': send(api.contact.async.block, id)
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        }, i18n('Block')))
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      ])
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    } else {
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      return []
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    }
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  })
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}
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