/
youtube.cljs
344 lines (282 loc) · 8.71 KB
/
youtube.cljs
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(ns nsfw.youtube
(:require [clojure.string :as str]
[nsfw.util :as nu]
[nsfw.page :as page]
[reagent.core :as r]
[nsfw.components :as nc]
[dommy.core :as dommy]
[cljs.core.async :as async
:refer [<! >! chan close! put! take! timeout]
:refer-macros [go go-loop]])
(:require-macros [cljs.core.async.macros :refer [go go-loop]]))
(defonce !tag (atom nil))
(defonce !delayed-inits (atom []))
(defn attach-ready []
(set! js/onYouTubeIframeAPIReady
(fn []
(doseq [f @!delayed-inits]
(f))
(reset! !delayed-inits []))))
;; Player API
(defn play-video [p]
(when p
(.playVideo p)))
(defn pause-video [p]
(when p
(.pauseVideo p)))
(defn stop-video [p]
(when p
(.stopVideo p)))
(defn seek-to [p ms & [allow-seek-ahead?]]
(when p
(.seekTo p (/ ms 1000) allow-seek-ahead?)))
(defn mute [p]
(when p
(.mute p)))
(defn unmute [p]
(when p
(.unmute p)))
(defn muted? [p]
(when p
(.isMuted p)))
(defn get-volume [p]
(when p
(.getVolume p)))
(defn set-volume
;; n [0 100]
[p n]
(when p
(.setVolume p n)))
(defn set-size [p width height]
(when p
(.setSize p width height)))
(defn get-playback-rate [p]
(when p
(.getPlaybackRate p)))
(defn set-playback-rate [p n]
(when p
(.setPlaybackRate p n)))
(defn get-available-playback-rates [p]
(when p
(.getAvailablePlaybackRates p)))
;; vid info
(defn get-duration [p]
(when p
(* 1000 (.getDuration p))))
(defn get-video-url [p]
(when p
(.getVideoUrl p)))
(defn get-video-embed-code [p]
(when p
(.getVideoEmbedCode p)))
(defn add-listener [p event f]
(when p
(.addEventListener p event f)))
(defn rem-listener [p event f]
(when p
(.removeEventListener p event f)))
;; playback status
(defn get-video-loaded-fraction [p]
(when p
(.getVideoLoadedFraction p)))
(defn get-player-state [p]
(when p
(and
(fn? (.-getPlayerState p))
(.getPlayerState p))))
(defn round-to-resolution [yt-time]
(nu/round (* 1000 yt-time)))
(defn get-current-time [p]
(when p
(round-to-resolution
(.getCurrentTime p))))
(defn get-video-start-bytes [p]
(when p
(.getVideoStartBytes p)))
(defn get-video-bytes-loaded [p]
(when p
(.getVideoBytesLoaded p)))
(defn get-video-bytes-total [p]
(when p
(.getVideoBytesTotal p)))
(defn script-loaded? []
(try
(= 1 (.-loaded js/YT))
(catch js/Error e false)))
(defn script-attached? []
(or (script-loaded?)
@!tag))
(defn attach-script []
(prn "attaching script")
(let [tag (.createElement js/document "script")
_ (set! (.-src tag) "https://www.youtube.com/iframe_api")
first-script-node (.item (.getElementsByTagName js/document "script") 0)
parent (.-parentNode first-script-node)]
(.insertBefore parent tag first-script-node)
(reset! !tag tag)))
(defn run-after-script-load [f]
(if (script-loaded?)
(f)
(swap! !delayed-inits
conj
f)))
(defn create-player [node
{:keys [video-id
width height
autoplay?
player-vars
on-ready
on-state-change]
:or [width 500
height 300]}]
(js/YT.Player.
node
(clj->js
{:height height
:width width
:playerVars player-vars
:videoId video-id
:events {:onReady on-ready
:onStateChange on-state-change}})))
(defn playing? [p]
(= (get-player-state p) 1))
(defn gather-props [player]
{:playing? (playing? player)
:time (get-current-time player)
:duration (get-duration player)})
(defn update-player-opts [p old new]
(when p
(when (or (not= (:width old) (:width new))
(not= (:height old) (:height new)))
(set-size p (:width new) (:height new)))))
(defn update-playing [p playing-flag?]
(prn "P" p)
(when p
(when-not (= (playing? p) playing-flag?)
(if playing-flag?
(play-video p)
(pause-video p)))))
(defn $video [{:keys [on-player
on-playing
on-paused
on-ready
on-state-change
on-props
on-time
throttle-time]
:or {on-playing (fn [])
on-paused (fn [])}
:as opts}]
(let [!node (atom nil)
!player (atom nil)
!runs (atom {})
!current-run-id (atom nil)
internal-on-playing
(fn []
(let [next-run-id (nu/uuid)
last-run-id @!current-run-id]
(swap!
!runs
(fn [runs]
(-> runs
(assoc last-run-id nil)
(assoc next-run-id true))))
(reset! !current-run-id next-run-id)
(go-loop []
(when (get @!runs next-run-id)
(when on-time
(on-time
@!player
(get-current-time @!player)))
(<! (timeout (or throttle-time 200)))
(recur))))
(when on-playing
(on-playing @!player)))
internal-on-paused
(fn []
(when @!current-run-id
(swap! !runs assoc @!current-run-id nil))
(when on-paused
(on-paused @!player)))
initialize-video (fn [opts]
(prn "INIT" opts)
(reset! !player
(create-player
@!node
(merge
(select-keys
opts
[:width :height :video-id :player-vars])
{:on-ready
(fn [e]
(when on-ready
(on-ready @!player e))
(when on-props
(on-props
@!player
(gather-props @!player))))
:on-state-change
(fn [e]
(let [state (.-data e)]
(condp = state
-1 nil
0 nil
1 (internal-on-playing)
2 (internal-on-paused)
3 nil
5 nil
nil))
(when on-state-change
(on-state-change e))
(when on-props
(on-props (gather-props @!player))))})))
(when on-player
(when @!current-run-id
(swap! !runs assoc @!current-run-id nil))
(on-player @!player)))]
(r/create-class
{:component-did-mount
(fn [_]
(when-not (script-attached?)
(attach-script))
(run-after-script-load
(fn []
(initialize-video opts))))
:component-will-unmount
(fn [_]
(when @!tag
(try
(.removeFromParent @!tag)
(catch js/Error e
(prn "Error removing yt script from parent")
nil)))
(when @!current-run-id
(swap! !runs assoc @!current-run-id nil)))
:component-did-update
(page/cdu-diff
(fn [[old-opts]
[new-opts]]
(run-after-script-load
(fn []
(if (not= (:video-id old-opts)
(:video-id new-opts))
(initialize-video new-opts)
(update-player-opts
@!player
old-opts
new-opts))))
#_(run-after-script-load
(fn []
(when (not= (:playing? old-opts) (:playing? new-opts))
(update-playing
@!player
(:playing? new-opts)))))))
:reagent-render
(fn [{:keys [video-id width height]}]
[:div.yt-vid-wrapper
{:key video-id
:style {:width width
:height height}}
[:div
{:ref #(when % (reset! !node %))}]])})))
(attach-ready)