urbit/main/app/twit/core.hook

::  Twitter daemon
::
::::  /hook/core/twit/app
  ::
::  /-    twit-do  ::  XX  wherefore broken
/+    twitter
::
::::  ~fyr
  ::
|%
++  twit-do
  $%  [%auth p=keys]
      [%post p=@uvI q=cord]
  ==
::
++  axle  
  $:  %0
      kes=(unit keys)
      out=(map ,@uvI (each cord ,@da))
      ran=(map path ,[p=@ud q=@da])
      fed=(map path tid:twit)
  ==
++  note  $%  [%e %them ~ u=hiss]
              [%t %wait p=@da]
          ==
++  sign  $%  [%e %thou p=httr]
              [%t %wake ~]
          ==
++  gift  $%  [%nice ~]
              [%mean p=ares]
              [%rush p=gilt]
          ==
++  gilt  $%  [%twit-feed p=(list stat)]
              [%time p=time]
          ==
::
++  stat  ,[id=@u who=@ta now=@da txt=@t]
++  move  ,[bone (mold note gift)]
--
!:
::::
  ::
|_  [hide axle]
++  auth  ~|(%no-auth ~(. twit (need kes) lat `@`eny))
++  cull
  |=  [pax=path rep=(list stat)]
  =+  pev=(~(get by fed) pax)
  ?~  pev  rep
  ::   ~&  do-cull/[u.pev (turn rep |=(stat id))]
  |-  ^+  rep
  ?~  rep  ~
  ?:  =(u.pev id.i.rep)  ~
  [i.rep $(rep t.rep)]
::
++  dely
  |=  pax=path
  ^-  [(unit time) _ran]
  =+  cur=(~(get by ran) pax)
  =+  tym=(add lat (mul ~s8 (bex ?~(cur 0 p.u.cur))))
  ~&  dely/`@dr`(sub tym lat)
  ?:  &(?=(^ cur) (gte tym q.u.cur) (gth q.u.cur lat))
    [~ ran]
  [`tym (~(put by ran) pax ?~(cur 0 (min 5 +(p.u.cur))) tym)]
::
++  wait
  |=  [ost=bone pax=path mof=(list move)]
  =^  tym  ran  (dely pax)
  :_  +>.$
  ?~  tym  
    ~&  no-wait/ran
    mof
  ~&  will-wait/u.tym
  :-  [ost %pass pax %t %wait u.tym]
  mof
::
++  poke-twit-do
  |=  [ost=bone @ act=twit-do]
  ^+  [*(list move) +>]
  ?-    -.act
      %auth
    ::  ~&  twit-auth/p.act
    =.  kes  `p.act
    :_(+>.$ [ost %give %nice ~]~)
      %post
    =:  out  (~(put by out) p.act %& q.act)
        ran  (~(del by ran) /peer/mine)
      ==
    %^  wait  ost  /peer/mine
    :-  [ost %give %nice ~]
    =+  mez=(stat-upda:auth [%status q.act]~ ~)
    [ost %pass /post/(scot %uv p.act) %e %them ~ mez]~
  ==
::
++  pour
  |=  [ost=bone pax=path sig=sign]
  ^+  [*(list move) +>]
  ?-    &2.sig
      %wake
    ~&  wake/[pax sig]
    ?.  (~(has by ran) pax)
      `+>
    ?+  pax  ~|([%wake-missed pax] !!)
      [%peer *]  
        ?~  (~(get ju pus) t.pax)
          `+>
        ~&  peer-again/[t.pax ran]
        (peer ost our t.pax)
    ==
      %thou
    ?+    p.p.sig  ~|([%unknown-code p.p.sig] !!)
        429  ::  Rate-limit
      =.  ran  (~(put by ran) pax 6 lat)
      =+  lim=%.(%x-rate-limit-reset ;~(biff ~(get by (mo q.p.sig)) poja ni:jo))
      =+  tym=?~(lim (add ~m7.s30 lat) (add ~1970.1.1 (mul ~s1 u.lim)))
      ~&  retrying-in/`@dr`(sub tym lat)
      :_(+>.$ [ost %pass pax %t %wait tym]~)
        200  ::  OK
      =+  jon=(need (poja q:(need r.p.sig)))
  ::     ~&  twit-resp/%.(jon ?+(-.jon !! %o stat:twir, %a (ar:jo stat:twir)))
      ?+    pax  ~|([%http-missed pax] !!)
          [%post @ ~]
        =.  out  (~(put by out) (slav %uv i.t.pax) %| lat)
        :_  +>.$
        (weld (spam pax %rush %time lat) (spam pax %mean ~))
          [%peer *]
        =+  ^=  rep
            ~|  [%bad-tweets jon]
            [(need %.(jon (ar:jo stat:twir)))]
        ~&  got-feed/[(scag 5 (turn rep |=(stat id))) fed]
        =.  rep  (cull t.pax rep)       ::  only new messages
        ?~  rep
          (wait ost pax ~)
        ~&  spam-feed/rep
        =:  ran  (~(del by ran) pax)
            fed  (~(put by fed) t.pax id.i.rep)
          ==
        (wait ost pax (spam t.pax %rush twit-feed/(flop rep)))
      ==
        ?(400 401 403 404)  ::  Err
      =+  ^-  git=gift
          =+  err=%.(q:(need r.p.sig) ;~(biff poja mean:twir))
          :^  %mean  ~  %bad-http
          [leaf/"HTTP Code {<p.p.sig>}" (turn (need err) mean:twip)]
      ?+    pax  [[ost %give git]~ +>.$]
        [%post @ ~]
          [(spam pax git) +>.$]
  ==  ==
    ==
::
++  peer
  |=  [ost=bone @ pax=path]
  ^+  [*(list move) +>]
  :_  +>.$
  :-  [ost %give %nice ~]
  ?~  pax  !!
  ?:  ?=(%post i.pax)
    ?>  ?=([@ ~] t.pax)
    =+  sta=(~(get by out) (slav %uv i.t.pax))
    ?.  ?=([~ %| @] sta)
      ~
    :-  [ost %give %rush %time p.u.sta]
    [ost %give %mean ~]~              ::  subscription ended
  =-  [ost %pass [%peer pax] %e %them ~ `hiss`-]~
  ?+    i.pax  ~|([%missed-prefix i.pax] !!)
    %mine
      ?^  t.pax  !!
      (stat-home:auth)
    %line
      ?>  ?=([@ ~] t.pax)
      =-  (stat-user:auth [-]~ ~)
      ^-  sd:twit
      ~|  [%not-user i.t.pax]
      %+  rash  i.t.pax
      ;~(pose (stag %user-id dem) (stag %screen-name user:twir))
  ==
::
++  pull
  |=  ost=bone
  =+  [his pax]=(~(got by sup) ost)
  ?:  (lth 1 ~(wyt in (~(get ju pus) pax)))
    `+>.$
  =:  ran  (~(del by ran) [%peer pax])
      fed  (~(del by fed) pax)
    ==
  `+>.$
++  spam
  |=  [a=path b=gift]  ^-  (list move)
  %+  murn  (~(tap by sup))
  |=  [ost=bone @ pax=path]
  ^-  (unit move)
  ?.  =(pax a)  ~
  [~ [ost %give b]]
--