From 3b6f205c34bb931de0323581edf991ca33256e6b Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Thu, 24 Jan 2019 10:16:30 +0100
Subject: Correctly implement p2p-media-loader

---
 .../src/assets/player/p2p-media-loader-plugin.ts   | 82 ++++++++++++++++++++--
 1 file changed, 76 insertions(+), 6 deletions(-)

(limited to 'client/src/assets/player/p2p-media-loader-plugin.ts')

diff --git a/client/src/assets/player/p2p-media-loader-plugin.ts b/client/src/assets/player/p2p-media-loader-plugin.ts
index 6d07a2c9c..25117e51e 100644
--- a/client/src/assets/player/p2p-media-loader-plugin.ts
+++ b/client/src/assets/player/p2p-media-loader-plugin.ts
@@ -1,25 +1,45 @@
 // FIXME: something weird with our path definition in tsconfig and typings
 // @ts-ignore
 import * as videojs from 'video.js'
-import { P2PMediaLoaderPluginOptions, VideoJSComponentInterface } from './peertube-videojs-typings'
+import { P2PMediaLoaderPluginOptions, PlayerNetworkInfo, VideoJSComponentInterface } from './peertube-videojs-typings'
 
 // videojs-hlsjs-plugin needs videojs in window
 window['videojs'] = videojs
 import '@streamroot/videojs-hlsjs-plugin'
 
-import { initVideoJsContribHlsJsPlayer } from 'p2p-media-loader-hlsjs'
-
-// import { Events } from '../p2p-media-loader/p2p-media-loader-core/lib'
+import { Engine, initVideoJsContribHlsJsPlayer } from 'p2p-media-loader-hlsjs'
+import * as Hls from 'hls.js'
+import { Events } from 'p2p-media-loader-core'
 
 const Plugin: VideoJSComponentInterface = videojs.getPlugin('plugin')
 class P2pMediaLoaderPlugin extends Plugin {
 
+  private readonly CONSTANTS = {
+    INFO_SCHEDULER: 1000 // Don't change this
+  }
+
+  private hlsjs: Hls
+  private p2pEngine: Engine
+  private statsP2PBytes = {
+    pendingDownload: [] as number[],
+    pendingUpload: [] as number[],
+    numPeers: 0,
+    totalDownload: 0,
+    totalUpload: 0
+  }
+
+  private networkInfoInterval: any
+
   constructor (player: videojs.Player, options: P2PMediaLoaderPluginOptions) {
     super(player, options)
 
-    initVideoJsContribHlsJsPlayer(player)
+    videojs.Html5Hlsjs.addHook('beforeinitialize', (videojsPlayer: any, hlsjs: Hls) => {
+      this.hlsjs = hlsjs
 
-    console.log(options)
+      this.initialize()
+    })
+
+    initVideoJsContribHlsJsPlayer(player)
 
     player.src({
       type: options.type,
@@ -27,6 +47,56 @@ class P2pMediaLoaderPlugin extends Plugin {
     })
   }
 
+  dispose () {
+    clearInterval(this.networkInfoInterval)
+  }
+
+  private initialize () {
+    this.p2pEngine = this.player.tech_.options_.hlsjsConfig.loader.getEngine()
+
+    this.hlsjs.on(Hls.Events.LEVEL_SWITCHING, (_, data: Hls.levelSwitchingData) => {
+      this.trigger('resolutionChange', { auto: this.hlsjs.autoLevelEnabled, resolutionId: data.height })
+    })
+
+    this.runStats()
+  }
+
+  private runStats () {
+    this.p2pEngine.on(Events.PieceBytesDownloaded, (method: string, size: number) => {
+      if (method === 'p2p') {
+        this.statsP2PBytes.pendingDownload.push(size)
+        this.statsP2PBytes.totalDownload += size
+      }
+    })
+
+    this.p2pEngine.on(Events.PieceBytesUploaded, (method: string, size: number) => {
+      if (method === 'p2p') {
+        this.statsP2PBytes.pendingUpload.push(size)
+        this.statsP2PBytes.totalUpload += size
+      }
+    })
+
+    this.p2pEngine.on(Events.PeerConnect, () => this.statsP2PBytes.numPeers++)
+    this.p2pEngine.on(Events.PeerClose, () => this.statsP2PBytes.numPeers--)
+
+    this.networkInfoInterval = setInterval(() => {
+      let downloadSpeed = this.statsP2PBytes.pendingDownload.reduce((a: number, b: number) => a + b, 0)
+      let uploadSpeed = this.statsP2PBytes.pendingUpload.reduce((a: number, b: number) => a + b, 0)
+
+      this.statsP2PBytes.pendingDownload = []
+      this.statsP2PBytes.pendingUpload = []
+
+      return this.player.trigger('p2pInfo', {
+        p2p: {
+          downloadSpeed,
+          uploadSpeed,
+          numPeers: this.statsP2PBytes.numPeers,
+          downloaded: this.statsP2PBytes.totalDownload,
+          uploaded: this.statsP2PBytes.totalUpload
+        }
+      } as PlayerNetworkInfo)
+    }, this.CONSTANTS.INFO_SCHEDULER)
+  }
 }
 
 videojs.registerPlugin('p2pMediaLoader', P2pMediaLoaderPlugin)
-- 
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