graph-view: add delete, leave threads

pkg/arvo/sur/graph-view.hoon

@@ -2,12 +2,23 @@
 /+  resource
 ^?
 |%
-++  error
-  $%
-    [%offline =ship]
-    [%no-permissions ~]
-  ==
-++  action      
+::  $error: An error from a graph-view poke
+::  
+::    %offline: Ship is offline
+::    %bad-perms: Not permitted
+::    %unknown: Anything not described above
+::
++$  error
+  ?(%offline %bad-perms %unknown)
+::  $action: A semantic action on graphs
+::  
+::    %create: Create a graph and associated metadata
+::    %delete: Delete a graph
+::    %join: Join a graph
+::    %invite: Invite users to a graph
+::    %groupify: Make graph into managed group
+::
++$  action      
   $%
     $:  %create
         rid=resource

pkg/arvo/ted/graph/delete.hoon

@@ -0,0 +1,61 @@
+/-  spider, graph-view, graph=graph-store, *metadata-store, *group
+/+  strandio, resource
+=>
+|% 
+++  strand  strand:spider
+++  poke  poke:strandio
+++  poke-our   poke-our:strandio
+++  scry-metadata
+  |=  rid=resource
+  =/  m  (strand ,(unit resource))
+  ;<  pax=(unit path)  bind:m
+    %+  scry:strandio   ,(unit path)
+    ;:  weld
+      /gx/metadata-store/resource/graph
+      (en-path:resource rid)
+      /noun
+    ==
+  (pure:m (bind pax de-path:resource))
+++  scry-group
+  |=  rid=resource
+  =/  m  (strand ,(unit resource))
+  ;<  ugroup=(unit group)  bind:m
+    %+  scry:strandio   ,(unit group)
+    ;:  weld
+      /gx/group-store/resource/graph
+      (en-path:resource rid)
+      /noun
+    ==
+  (pure:m (need ugroup))
+++  delete-graph
+  |=  rid=resource
+  =/  m  (strand ,~)
+  ;<  ~  bind:m
+    (poke-our %graph-push-hook %push-hook-action [%remove rid.action])
+  ;<  ~  bind:m
+    (poke-our %graph-store %graph-update [%archive-graph rid.action])
+  (pure:m ~)
+--
+^-  thread:spider
+|=  arg=vase
+=/  m  (strand ,vase)
+^-  form:m
+=+  !<([=action:graph-view ~] arg)
+?>  ?=(%delete -.action)
+;<  =bowl:spider  bind:m  get-bowl:strandio
+?>  =(our.bowl entity.rid.action)
+;<  ugroup-rid=(unit resource)  bind:m  
+  (scry-metadata rid.action)
+?~  ugroup-rid  (fail:m %nonexistent)
+;<  ugroup=(unit group)
+  (scry-group u.ugroup-rid)
+?~  ugroup  (fail:m %nonexistent)
+?.  hidden.u.ugroup
+  (delete-graph rid.action)
+;<  ~  bind:m
+  (poke-our %group-push-hook %pull-hook-action [%remove rid.action])
+;<  ~  bind:m
+  (poke-our %group-store %group-action !>([%remove-group rid.action])
+;<  ~  bind:m  (delete-graph rid.action)
+(pure:m !>(~))
+

pkg/arvo/ted/graph/join.hoon

@@ -29,9 +29,9 @@
   (scry-metadata rid.action)
 ?^  group
   ::  We have group, graph is managed
-  :: ;<  ~  bind:m  
-  ::   %+  poke-our   %graph-pull-hook
-  ::   pull-hook-action+!>([%add ship.action rid.action])
+  ;<  ~  bind:m  
+     %+  poke-our   %graph-pull-hook
+     pull-hook-action+!>([%add ship.action rid.action])
   (pure:m !>(~))
 :: Else, add group then join
 ;<  ~  bind:m  

pkg/arvo/ted/graph/leave.hoon

@@ -0,0 +1,61 @@
+/-  spider, graph-view, graph=graph-store, *metadata-store, *group
+/+  strandio, resource
+=>
+|% 
+++  strand  strand:spider
+++  poke  poke:strandio
+++  poke-our   poke-our:strandio
+++  scry-metadata
+  |=  rid=resource
+  =/  m  (strand ,(unit resource))
+  ;<  pax=(unit path)  bind:m
+    %+  scry:strandio   ,(unit path)
+    ;:  weld
+      /gx/metadata-store/resource/graph
+      (en-path:resource rid)
+      /noun
+    ==
+  (pure:m (bind pax de-path:resource))
+++  scry-group
+  |=  rid=resource
+  =/  m  (strand ,(unit resource))
+  ;<  ugroup=(unit group)  bind:m
+    %+  scry:strandio   ,(unit group)
+    ;:  weld
+      /gx/group-store/resource/graph
+      (en-path:resource rid)
+      /noun
+    ==
+  (pure:m (need ugroup))
+++  delete-graph
+  |=  rid=resource
+  =/  m  (strand ,~)
+  ;<  ~  bind:m
+    (poke-our %graph-pull-hook %pull-hook-action [%remove rid.action])
+  ;<  ~  bind:m
+    (poke-our %graph-store %graph-update [%archive-graph rid.action])
+  (pure:m ~)
+--
+^-  thread:spider
+|=  arg=vase
+=/  m  (strand ,vase)
+^-  form:m
+=+  !<([=action:graph-view ~] arg)
+?>  ?=(%leave -.action)
+;<  =bowl:spider  bind:m  get-bowl:strandio
+?<  =(our.bowl entity.rid.action)
+;<  ugroup-rid=(unit resource)  bind:m  
+  (scry-metadata rid.action)
+?~  ugroup-rid  (fail:m %nonexistent)
+;<  ugroup=(unit group)
+  (scry-group u.ugroup-rid)
+?~  ugroup  (fail:m %nonexistent)
+?.  hidden.u.ugroup
+  (delete-graph rid.action)
+;<  ~  bind:m
+  (poke-our %group-push-hook %pull-hook-action [%remove rid.action])
+;<  ~  bind:m
+  (poke-our %group-store %group-action !>([%remove-group rid.action])
+;<  ~  bind:m  (delete-graph rid.action)
+(pure:m !>(~))
+