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shrub/pkg/arvo/app/group-hook.hoon

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:: group-hook: allow syncing group data from foreign paths to local paths
::
/- *group-store, *group-hook
|%
+$ move [bone card]
::
+$ card
$% [%diff [%group-update group-update]]
[%quit ~]
[%poke wire dock [%group-action group-action]]
[%pull wire dock ~]
[%peer wire dock path]
==
::
+$ state
$% [%0 state-zero]
==
::
+$ state-zero
$: synced=(map path ship)
boned=(map wire (list bone))
==
::
--
::
|_ [bol=bowl:gall state]
::
++ this .
::
++ prep
|= old=(unit state)
^- (quip move _this)
?~ old
[~ this]
[~ this(+<+ u.old)]
::
++ poke-group-hook-action
|= act=group-hook-action
^- (quip move _this)
?- -.act
%add
?. (team:title our.bol src.bol)
[~ this]
=/ group-path [%group path.act]
=/ group-wire [(scot %p ship.act) group-path]
?: (~(has by synced) path.act)
[~ this]
=. synced (~(put by synced) path.act ship.act)
:_ (track-bone group-wire)
?: =(ship.act our.bol)
[ost.bol %peer group-wire [ship.act %group-store] group-path]~
[ost.bol %peer group-wire [ship.act %group-hook] group-path]~
::
%remove
=/ ship (~(get by synced) path.act)
?~ ship
[~ this]
?: &(=(u.ship our.bol) (team:title our.bol src.bol))
:: delete one of our own paths
=/ group-wire [(scot %p our.bol) %group path.act]
:_ this(synced (~(del by synced) path.act))
%+ weld
(pull-wire group-wire path.act)
^- (list move)
%+ turn (prey:pubsub:userlib [%group path.act] bol)
|= [=bone *]
^- move
[bone %quit ~]
?: |(=(u.ship src.bol) (team:title our.bol src.bol))
:: delete a foreign ship's path
=/ group-wire [(scot %p u.ship) %group path.act]
:_ this(synced (~(del by synced) path.act))
(pull-wire group-wire path.act)
:: don't allow
[~ this]
==
::
++ peer-group
|= pax=path
^- (quip move _this)
?~ pax !!
?> (~(has by synced) pax)
=/ grp (group-scry pax)
?~ grp !!
:_ this
[ost.bol %diff [%group-update [%path u.grp pax]]]~
::
++ diff-group-update
|= [wir=wire diff=group-update]
^- (quip move _this)
?: (team:title our.bol src.bol)
(handle-local diff)
(handle-foreign diff)
::
++ handle-local
|= diff=group-update
^- (quip move _this)
?- -.diff
%keys [~ this]
%path [~ this]
%bundle [~ this]
%add [(update-subscribers [%group pax.diff] diff) this]
%remove [(update-subscribers [%group pax.diff] diff) this]
::
%unbundle
:_ this(synced (~(del by synced) pax.diff))
%+ weld
(update-subscribers [%group pax.diff] diff)
^- (list move)
%+ turn (prey:pubsub:userlib [%group pax.diff] bol)
|= [=bone *]
[bone %quit ~]
==
::
++ handle-foreign
|= diff=group-update
^- (quip move _this)
?- -.diff
%keys [~ this]
%bundle [~ this]
::
%path
:_ this
?~ pax.diff ~
=/ ship (~(get by synced) pax.diff)
?~ ship ~
?. =(src.bol u.ship) ~
:~ (group-poke pax.diff [%unbundle pax.diff])
(group-poke pax.diff [%bundle pax.diff])
(group-poke pax.diff [%add members.diff pax.diff])
==
::
%add
:_ this
?~ pax.diff ~
=/ ship (~(get by synced) pax.diff)
?~ ship ~
?. =(src.bol u.ship) ~
[(group-poke pax.diff diff)]~
::
%remove
:_ this
?~ pax.diff ~
=/ ship (~(get by synced) pax.diff)
?~ ship ~
?. =(src.bol u.ship) ~
[(group-poke pax.diff diff)]~
::
%unbundle
?~ pax.diff
[~ this]
=/ ship (~(get by synced) pax.diff)
?~ ship
[~ this]
?. =(src.bol u.ship)
[~ this]
:_ this(synced (~(del by synced) pax.diff))
[(group-poke pax.diff diff)]~
==
::
++ quit
|= wir=wire
^- (quip move _this)
=^ =ship wir
?> ?=([* ^] wir)
[(slav %p i.wir) t.t.wir]
?. (~(has by synced) wir)
[~ this]
=/ group-path [%group wir]
=/ group-wire [(scot %p ship) group-path]
:_ (track-bone group-wire)
[ost.bol %peer group-wire [ship %group-hook] group-path]~
::
++ reap
|= [wir=wire saw=(unit tang)]
^- (quip move _this)
?~ saw
[~ this]
=^ =ship wir
?> ?=([* ^] wir)
[(slav %p i.wir) t.t.wir]
~& %insufficient-permissions-for-group
[((slog u.saw) ~) this(synced (~(del by synced) wir))]
::
++ group-poke
|= [pax=path action=group-action]
^- move
[ost.bol %poke pax [our.bol %group-store] [%group-action action]]
::
++ group-scry
|= pax=path
^- (unit group)
.^((unit group) %gx ;:(weld /=group-store/(scot %da now.bol) pax /noun))
::
++ update-subscribers
|= [pax=path diff=group-update]
^- (list move)
%+ turn (prey:pubsub:userlib pax bol)
|= [=bone *]
^- move
[bone %diff [%group-update diff]]
::
++ track-bone
|= wir=wire
^+ this
=/ bnd (~(get by boned) wir)
?^ bnd
this(boned (~(put by boned) wir (snoc u.bnd ost.bol)))
this(boned (~(put by boned) wir [ost.bol]~))
::
++ pull-wire
|= [wir=wire pax=path]
^- (list move)
=/ bnd (~(get by boned) wir)
?~ bnd
~
=/ shp (~(get by synced) pax)
?~ shp
~
%+ turn u.bnd
|= ost=bone
^- move
?: =(u.shp our.bol)
[ost %pull wir [our.bol %group-store] ~]
[ost %pull wir [u.shp %group-hook] ~]
::
--