penpot/frontend/src/app/worker/thumbnails.cljs
2022-03-28 17:24:52 +02:00

102 lines
3.2 KiB
Clojure

;; This Source Code Form is subject to the terms of the Mozilla Public
;; License, v. 2.0. If a copy of the MPL was not distributed with this
;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
;;
;; Copyright (c) UXBOX Labs SL
(ns app.worker.thumbnails
(:require
["react-dom/server" :as rds]
[app.common.uri :as u]
[app.config :as cfg]
[app.main.fonts :as fonts]
[app.main.render :as render]
[app.util.http :as http]
[app.worker.impl :as impl]
[beicon.core :as rx]
[rumext.alpha :as mf]))
(defn- not-found?
[{:keys [type]}]
(= :not-found type))
(defn- handle-response
[response]
(cond
(http/success? response)
(rx/of (:body response))
(http/client-error? response)
(rx/throw (:body response))
:else
(rx/throw {:type :unexpected
:code (:error response)})))
(defn- request-data-for-thumbnail
[file-id revn]
(let [path "api/rpc/query/file-data-for-thumbnail"
params {:file-id file-id
:revn revn
:strip-frames-with-thumbnails true}
request {:method :get
:uri (u/join (cfg/get-public-uri) path)
:credentials "include"
:query params}]
(->> (http/send! request)
(rx/map http/conditional-decode-transit)
(rx/mapcat handle-response))))
(defn- request-thumbnail
[file-id revn]
(let [path "api/rpc/query/file-thumbnail"
params {:file-id file-id
:revn revn}
request {:method :get
:uri (u/join (cfg/get-public-uri) path)
:credentials "include"
:query params}]
(->> (http/send! request)
(rx/map http/conditional-decode-transit)
(rx/mapcat handle-response))))
(defn- render-thumbnail
[{:keys [data file-id revn] :as params}]
(let [elem (if-let [frame (:thumbnail-frame data)]
(mf/element render/frame-svg #js {:objects (:objects data) :frame frame})
(mf/element render/page-svg #js {:data data :width "290" :height "150" :thumbnails? true}))]
{:data (rds/renderToStaticMarkup elem)
:fonts @fonts/loaded
:file-id file-id
:revn revn}))
(defn- persist-thumbnail
[{:keys [file-id data revn fonts]}]
(let [path "api/rpc/mutation/upsert-file-thumbnail"
params {:file-id file-id
:revn revn
:props {:fonts fonts}
:data data}
request {:method :post
:uri (u/join (cfg/get-public-uri) path)
:credentials "include"
:body (http/transit-data params)}]
(->> (http/send! request)
(rx/map http/conditional-decode-transit)
(rx/mapcat handle-response)
(rx/map (constantly params)))))
(defmethod impl/handler :thumbnails/generate
[{:keys [file-id revn] :as message}]
(letfn [(on-result [{:keys [data props]}]
{:data data
:fonts (:fonts props)})
(on-cache-miss [_]
(->> (request-data-for-thumbnail file-id revn)
(rx/map render-thumbnail)
(rx/mapcat persist-thumbnail)))]
(->> (request-thumbnail file-id revn)
(rx/catch not-found? on-cache-miss)
(rx/map on-result))))