2020-05-05 15:41:56 +02:00

243 lines
7.3 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/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 UXBOX Labs SL
(ns uxbox.main.data.viewer
(:require
[cljs.spec.alpha :as s]
[beicon.core :as rx]
[potok.core :as ptk]
[uxbox.main.constants :as c]
[uxbox.main.repo :as rp]
[uxbox.main.store :as st]
[uxbox.common.spec :as us]
[uxbox.common.pages :as cp]
[uxbox.common.data :as d]
[uxbox.common.exceptions :as ex]
[uxbox.util.router :as rt]
[uxbox.common.uuid :as uuid]))
;; --- Specs
(s/def ::id ::us/uuid)
(s/def ::name ::us/string)
(s/def ::project (s/keys ::req-un [::id ::name]))
(s/def ::file (s/keys :req-un [::id ::name]))
(s/def ::page (s/keys :req-un [::id ::name ::cp/data]))
(s/def ::interactions-mode #{:hide :show :show-on-click})
(s/def ::bundle
(s/keys :req-un [::project ::file ::page]))
;; --- Initialization
(declare fetch-bundle)
(declare bundle-fetched)
(defn initialize
[page-id share-token]
(ptk/reify ::initialize
ptk/UpdateEvent
(update [_ state]
(assoc state :viewer-local {:zoom 1
:page-id page-id
:interactions-mode :hide
:show-interactions? false}))
ptk/WatchEvent
(watch [_ state stream]
(rx/of (fetch-bundle page-id share-token)))))
;; --- Data Fetching
(defn fetch-bundle
[page-id share-token]
(ptk/reify ::fetch-file
ptk/WatchEvent
(watch [_ state stream]
(let [params (cond-> {:page-id page-id}
(string? share-token) (assoc :share-token share-token))]
(->> (rp/query :viewer-bundle params)
(rx/map bundle-fetched)
(rx/catch (fn [error-data]
(rx/of (rt/nav :not-found)))))))))
(defn- extract-frames
[page]
(let [objects (get-in page [:data :objects])
root (get objects uuid/zero)]
(->> (:shapes root)
(map #(get objects %))
(filter #(= :frame (:type %)))
(reverse)
(vec))))
(defn bundle-fetched
[{:keys [project file page images] :as bundle}]
(us/verify ::bundle bundle)
(ptk/reify ::file-fetched
ptk/UpdateEvent
(update [_ state]
(let [frames (extract-frames page)
objects (get-in page [:data :objects])]
(assoc state :viewer-data {:project project
:objects objects
:file file
:page page
:images images
:frames frames})))))
(def create-share-link
(ptk/reify ::create-share-link
ptk/WatchEvent
(watch [_ state stream]
(let [id (get-in state [:viewer-local :page-id])]
(->> (rp/mutation :generate-page-share-token {:id id})
(rx/map (fn [{:keys [share-token]}]
#(assoc-in % [:viewer-data :page :share-token] share-token))))))))
(def delete-share-link
(ptk/reify ::delete-share-link
ptk/WatchEvent
(watch [_ state stream]
(let [id (get-in state [:viewer-local :page-id])]
(->> (rp/mutation :clear-page-share-token {:id id})
(rx/map (fn [_]
#(assoc-in % [:viewer-data :page :share-token] nil))))))))
;; --- Zoom Management
(def increase-zoom
(ptk/reify ::increase-zoom
ptk/UpdateEvent
(update [_ state]
(let [increase #(nth c/zoom-levels
(+ (d/index-of c/zoom-levels %) 1)
(last c/zoom-levels))]
(update-in state [:viewer-local :zoom] (fnil increase 1))))))
(def decrease-zoom
(ptk/reify ::decrease-zoom
ptk/UpdateEvent
(update [_ state]
(let [decrease #(nth c/zoom-levels
(- (d/index-of c/zoom-levels %) 1)
(first c/zoom-levels))]
(update-in state [:viewer-local :zoom] (fnil decrease 1))))))
(def reset-zoom
(ptk/reify ::reset-zoom
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:viewer-local :zoom] 1))))
(def zoom-to-50
(ptk/reify ::zoom-to-50
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:viewer-local :zoom] 0.5))))
(def zoom-to-200
(ptk/reify ::zoom-to-200
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:viewer-local :zoom] 2))))
;; --- Local State Management
(def toggle-thumbnails-panel
(ptk/reify ::toggle-thumbnails-panel
ptk/UpdateEvent
(update [_ state]
(update-in state [:viewer-local :show-thumbnails] not))))
(def select-prev-frame
(ptk/reify ::select-prev-frame
ptk/WatchEvent
(watch [_ state stream]
(let [route (:route state)
qparams (get-in route [:params :query])
pparams (get-in route [:params :path])
index (d/parse-integer (:index qparams))]
(when (pos? index)
(rx/of (rt/nav :viewer pparams (assoc qparams :index (dec index)))))))))
(def select-next-frame
(ptk/reify ::select-prev-frame
ptk/WatchEvent
(watch [_ state stream]
(let [route (:route state)
qparams (get-in route [:params :query])
pparams (get-in route [:params :path])
index (d/parse-integer (:index qparams))
total (count (get-in state [:viewer-data :frames]))]
(when (< index (dec total))
(rx/of (rt/nav :viewer pparams (assoc qparams :index (inc index)))))))))
(defn set-interactions-mode
[mode]
(us/verify ::interactions-mode mode)
(ptk/reify ::set-interactions-mode
ptk/UpdateEvent
(update [_ state]
(-> state
(assoc-in [:viewer-local :interactions-mode] mode)
(assoc-in [:viewer-local :show-interactions?] (case mode
:hide false
:show true
:show-on-click false))))))
(declare flash-done)
(def flash-interactions
(ptk/reify ::flash-interactions
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:viewer-local :show-interactions?] true))
ptk/WatchEvent
(watch [_ state stream]
(let [stopper (rx/filter (ptk/type? ::flash-interactions) stream)]
(->> (rx/of flash-done)
(rx/delay 1000)
(rx/take-until stopper))))))
(def flash-done
(ptk/reify ::flash-done
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:viewer-local :show-interactions?] false))))
;; --- Navigation
(defn go-to-frame
[frame-id]
(us/verify ::us/uuid frame-id)
(ptk/reify ::go-to-frame
ptk/WatchEvent
(watch [_ state stream]
(let [page-id (get-in state [:viewer-local :page-id])
frames (get-in state [:viewer-data :frames])
index (d/index-of-pred frames #(= (:id %) frame-id))]
(rx/of (rt/nav :viewer {:page-id page-id} {:index index}))))))
;; --- Shortcuts
(def shortcuts
{"+" #(st/emit! increase-zoom)
"-" #(st/emit! decrease-zoom)
"shift+0" #(st/emit! zoom-to-50)
"shift+1" #(st/emit! reset-zoom)
"shift+2" #(st/emit! zoom-to-200)
"left" #(st/emit! select-prev-frame)
"right" #(st/emit! select-next-frame)})