shrub/pkg/arvo/app/link-server-hook.hoon

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:: link-server: accessing link-store via eyre
::
:: only accepts requests authenticated as the host ship.
::
:: GET requests:
:: /~link/local-pages/[some-path].json?p=0
:: our submissions on path, with optional pagination
::
:: POST requests:
:: /~link/add/[some-path]
:: send {title url} json, will save link at path
::
/+ *link, *server, default-agent, verb
::
|%
+$ state-0
$: %0
~
::NOTE this means we could get away with just producing cards everywhere,
:: never producing new state outside of the agent interface core.
:: we opt to keep ^-(quip card _state) in place for most logic arms
:: because it doesn't cost much, results in unsurprising code, and
:: makes adding any state in the future easier.
==
::
+$ card card:agent:gall
--
::
=| state-0
=* state -
::
%+ verb |
^- agent:gall
=<
|_ =bowl:gall
+* this .
do ~(. +> bowl)
def ~(. (default-agent this %|) bowl)
::
++ on-init
^- (quip card _this)
:_ this
[start-serving:do]~
::
++ on-save !>(state)
++ on-load
|= old=vase
^- (quip card _this)
[~ this(state !<(state-0 old))]
::
++ on-watch
|= =path
^- (quip card _this)
?: ?=([%http-response *] path)
[~ this]
(on-watch:def path)
::
++ on-poke
|= [=mark =vase]
^- (quip card _this)
?. ?=(%handle-http-request mark)
(on-poke:def mark vase)
:_ this
=+ !<([eyre-id=@ta =inbound-request:eyre] vase)
(handle-http-request:do eyre-id inbound-request)
::
++ on-arvo
|= [=wire =sign-arvo]
^- (quip card _this)
?. ?=(%bound +<.sign-arvo)
(on-arvo:def wire sign-arvo)
[~ this]
::
++ on-agent
|= [=wire =sign:agent:gall]
^- (quip card _this)
?. ?=(%poke-ack -.sign)
(on-agent:def wire sign)
?~ p.sign [~ this]
=/ =tank
leaf+"{(trip dap.bowl)} failed writing to %link-store"
%- (slog tank u.p.sign)
[~ this]
::
++ on-peek on-peek:def
++ on-leave on-leave:def
++ on-fail on-fail:def
--
::
|_ =bowl:gall
::
++ start-serving
^- card
[%pass / %arvo %e %connect [~ /'~link'] dap.bowl]
::
++ do-action
|= =action
^- card
[%pass / %agent [our.bowl %link-store] %poke %link-action !>(action)]
::
++ do-add
|= [=path title=@t =url]
^- card
(do-action %save path title url)
::
++ handle-http-request
|= [eyre-id=@ta =inbound-request:eyre]
^- (list card)
::NOTE we don't use +require-authorization because it's too restrictive
:: on the flow we want here.
::
?. ?& authenticated.inbound-request
=(src.bowl our.bowl)
==
(give-simple-payload:app eyre-id [[403 ~] ~])
:: request-line: parsed url + params
::
=/ =request-line
%- parse-request-line
url.request.inbound-request
=* req-head header-list.request.inbound-request
=; [cards=(list card) =simple-payload:http]
%+ weld cards
(give-simple-payload:app eyre-id simple-payload)
?+ method.request.inbound-request [~ not-found:gen]
%'OPTIONS'
[~ (include-cors-headers req-head [[200 ~] ~])]
::
%'GET'
[~ (handle-get req-head request-line)]
::
%'POST'
(handle-post req-head request-line body.request.inbound-request)
==
::
++ handle-post
|= [request-headers=header-list:http =request-line body=(unit octs)]
^- [(list card) simple-payload:http]
=; [success=? cards=(list card)]
:- cards
%+ include-cors-headers
request-headers
::TODO it would be more correct to wait for the %poke-ack instead of
:: sending this response right away... but link-store pokes can't
:: actually fail right now, so it's fine.
[[?:(success 200 400) ~] `*octs]
?~ body [| ~]
?+ request-line [| ~]
[[~ [%'~link' %add ^]] ~]
^- [? (list card)]
=/ jon=(unit json) (de-json:html q.u.body)
?~ jon [| ~]
=/ page=(unit [title=@t =url])
%. u.jon
(ot title+so url+so ~):dejs-soft:format
?~ page [| ~]
[& [(do-add t.t.site.request-line [title url]:u.page) ~]]
==
::
++ handle-get
|= [request-headers=header-list:http =request-line]
%+ include-cors-headers
request-headers
^- simple-payload:http
:: args: map of params
:: p: pagination index
::
=/ args
%- ~(gas by *(map @t @t))
args.request-line
=/ p=(unit @ud)
%+ biff (~(get by args) 'p')
(curr rush dim:ag)
?+ request-line
:: for the default case, try to load file from clay
::
?~ ext.request-line not-found:gen
=/ file=(unit octs)
?. ?=([%'~link' *] site.request-line) ~
(get-file-at /app/link [t.site u.ext]:request-line)
?~ file not-found:gen
?+ u.ext.request-line not-found:gen
%html (html-response:gen u.file)
%js (js-response:gen u.file)
%css (css-response:gen u.file)
==
:: submissions by recency as json
::
[[[~ %json] [%'~link' %submissions ^]] *]
%- json-response:gen
%- json-to-octs ::TODO include in +json-response:gen
%+ page-to-json
(get-submissions t.t.site.request-line p)
submission:en-json
:: local links by recency as json
::
[[[~ %json] [%'~link' %local-pages ^]] *]
%- json-response:gen
%- json-to-octs ::TODO include in +json-response:gen
%+ page-to-json
(get-local-pages t.t.site.request-line p)
page:en-json
:: comments by recency as json
::
[[[~ %json] [%'~link' %discussions @ ^]] *]
%- json-response:gen
%- json-to-octs ::TODO include in +json-response:gen
%+ page-to-json
(get-discussions t.t.site.request-line p)
comment:en-json
==
::
++ include-cors-headers
|= [request-headers=header-list:http =simple-payload:http]
^+ simple-payload
=* out-heads headers.response-header.simple-payload
=; =header-list:http
|-
?~ header-list simple-payload
=* new-head i.header-list
=. out-heads
(set-header:http key.new-head value.new-head out-heads)
$(header-list t.header-list)
=/ origin=@t
=/ headers=(map @t @t)
(~(gas by *(map @t @t)) request-headers)
(~(gut by headers) 'origin' '*')
:~ 'Access-Control-Allow-Origin'^origin
'Access-Control-Allow-Credentials'^'true'
'Access-Control-Request-Method'^'OPTIONS, GET, POST'
'Access-Control-Allow-Methods'^'OPTIONS, GET, POST'
'Access-Control-Allow-Headers'^'content-type'
==
::
++ page-size 25
++ get-paginated
|* [l=(list) p=(unit @ud)]
^- [pages=@ud page=_l]
:- +((div (lent l) page-size))
?~ p l
%+ scag page-size
%+ slag (mul u.p page-size)
l
::
++ page-to-json
=, enjs:format
|* [[total-pages=@ud page=(list)] item-to-json=$-(* json)]
^- json
%- pairs
:~ 'total-pages'^(numb total-pages)
'page'^a+(turn page item-to-json)
==
::
++ get-submissions
|= [=path p=(unit @ud)]
^- [@ud submissions]
=- (get-paginated - p)
.^ submissions
%gx
(scot %p our.bowl)
%link-store
(scot %da now.bowl)
%submissions
(snoc path %noun)
==
::
++ get-local-pages
|= [=path p=(unit @ud)]
^- [@ud pages]
=- (get-paginated - p)
.^ pages
%gx
(scot %p our.bowl)
%link-store
(scot %da now.bowl)
%local-pages
(snoc path %noun)
==
::
++ get-discussions
|= [=path p=(unit @ud)]
^- [@ud comments]
=- (get-paginated - p)
.^ comments
%gx
(scot %p our.bowl)
%link-store
(scot %da now.bowl)
%discussions
(snoc path %noun)
==
::
++ get-file-at
|= [base=path file=path ext=@ta]
^- (unit octs)
:: only expose html, css and js files for now
::
?. ?=(?(%html %css %js) ext)
~
=/ =path
:* (scot %p our.bowl)
q.byk.bowl
(scot %da now.bowl)
(snoc (weld base file) ext)
==
?. .^(? %cu path)
~
%- some
%- as-octs:mimes:html
.^(@ %cx path)
--