urbit/pkg/arvo/app/metadata-push-hook.hoon

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:: metadata-push-hook [landscape]:
::
/- *group, *invite-store, store=metadata-store
/+ default-agent, verb, dbug, grpl=group, push-hook,
resource, mdl=metadata, gral=graph
~% %group-hook-top ..part ~
|%
+$ card card:agent:gall
::
++ config
^- config:push-hook
:* %metadata-store
/all
update:store
%metadata-update
%metadata-pull-hook
==
::
+$ agent (push-hook:push-hook config)
--
::
::
%- agent:dbug
%+ verb |
^- agent:gall
%- (agent:push-hook config)
^- agent
|_ =bowl:gall
+* this .
def ~(. (default-agent this %|) bowl)
grp ~(. grpl bowl)
met ~(. mdl bowl)
gra ~(. gral bowl)
::
++ on-init on-init:def
++ on-save !>(~)
++ on-load on-load:def
++ on-poke
|= [=mark =vase]
?. ?=(%metadata-hook-update mark)
(on-poke:def mark vase)
=+ !<(=hook-update:store vase)
?. ?=(%req-preview -.hook-update)
(on-poke:def mark vase)
=* rid group.hook-update
|^
?> =(entity.rid our.bowl)
?> (can-join:grp rid src.bowl)
=/ members
~(wyt in (members:grp rid))
=/ =metadatum:store
%- need
%+ mate (peek-metadatum:met %groups rid)
(peek-metadatum:met %graph rid)
:_ this
=; =cage
[%pass / %agent [src.bowl %metadata-pull-hook] %poke cage]~
:- %metadata-hook-update
!> ^- hook-update:store
[%preview rid channels members channel-count metadatum]
::
++ channels
%- ~(gas by *associations:store)
%+ skim ~(tap by (app-metadata-for-group:met rid %graph))
|=([=md-resource:store group=resource =metadatum:store] preview.metadatum)
::
++ channel-count
~(wyt by (app-metadata-for-group:met rid %graph))
--
++ on-agent on-agent:def
++ on-watch on-watch:def
++ on-leave on-leave:def
++ on-peek on-peek:def
++ on-arvo on-arvo:def
++ on-fail on-fail:def
::
++ should-proxy-update
|= =vase
=+ !<(=update:store vase)
?. ?=(?(%add %remove %update) -.update)
%.n
=/ role=(unit (unit role-tag))
(role-for-ship:grp group.update src.bowl)
?~ role %.n
?~ u.role %.n
?=(?(%admin %moderator) u.u.role)
::
++ resource-for-update resource-for-update:met
++ take-update
|= =vase
^- [(list card) agent]
`this
::
++ initial-watch
|= [=path rid=resource]
^- vase
=/ group
(scry-group:grp rid)
=/ =associations:store
(metadata-for-group:met rid)
?> ?=(^ group)
?> (~(has in members.u.group) src.bowl)
!> ^- update:store
[%initial-group rid associations]
::
--