From 10e6938b117e850e3a629596568989397e5d146f Mon Sep 17 00:00:00 2001
From: tonyrewin <anton.rewin@gmail.com>
Date: Mon, 14 Nov 2022 09:28:46 +0300
Subject: [PATCH] tracker-script

---
 src/components/Article/AudioPlayer.tsx | 74 +++++++++++++++++++++
 src/components/Article/FullArticle.tsx | 12 ++++
 src/components/Article/MusicPlayer.tsx |  9 ---
 src/graphql/query/article-by-slug.ts   |  2 +
 src/graphql/types.gen.ts               |  3 +-
 src/utils/soundwave.ts                 | 92 ++++++++++++++++++++++++++
 6 files changed, 182 insertions(+), 10 deletions(-)
 create mode 100644 src/components/Article/AudioPlayer.tsx
 delete mode 100644 src/components/Article/MusicPlayer.tsx
 create mode 100644 src/utils/soundwave.ts

diff --git a/src/components/Article/AudioPlayer.tsx b/src/components/Article/AudioPlayer.tsx
new file mode 100644
index 00000000..b7f2336f
--- /dev/null
+++ b/src/components/Article/AudioPlayer.tsx
@@ -0,0 +1,74 @@
+import { createMemo, createSignal, onMount } from 'solid-js'
+import { For } from 'solid-js/web'
+import type { Shout } from '../../graphql/types.gen'
+import { drawAudio } from '../../utils/soundwave'
+type MediaItem = any
+
+export default (props: { shout: Shout }) => {
+  const media = createMemo<any[]>(() => {
+    if (props.shout.media) {
+      console.debug(props.shout.media)
+      return [...JSON.parse(props.shout.media)]
+    }
+    return []
+  })
+  const [currentTrack, setCurrentTrack] = createSignal(media()[0])
+  const [paused, setPaused] = createSignal(true)
+  const togglePlayPause = () => setPaused(!paused())
+  const playMedia = (m: MediaItem) => {}
+  const [audioContext, setAudioContext] = createSignal<AudioContext>()
+  const currentTimer = createMemo(() => {
+    // TODO: return current audio player track position
+    return 1
+  })
+
+  onMount(() => {
+    const actx = new AudioContext()
+    setAudioContext(actx)
+    drawAudio(actx, currentTrack().src)
+  })
+
+  const SoundWave = () => <canvas></canvas>
+  return (
+    <div class="audio-container">
+      <div class="audio-img">
+        <img
+          class="ligthbox-img lazyload zoom-in"
+          width="320"
+          height="320"
+          alt={props.shout.title}
+          title={props.shout.title}
+          src={props.shout.cover}
+        />
+      </div>
+
+      <div class="audio-player-list">
+        <div class="player ng-scope">
+          <div class="player-title ng-binding ng-scope">{currentTrack().title}</div>
+          <i class="fas fa-pause fa-3x fa-fw ng-scope" onClick={togglePlayPause} style=""></i>
+          <div class="player-progress">
+            <SoundWave />
+            <span class="position ng-binding">{currentTimer() / currentTrack().length}</span>
+          </div>
+        </div>
+
+        <ul
+          class="other-songs ng-scope is-playing"
+          ng-class="{ 'is-playing': post._id === $root.currentMusicPostId }"
+          style=""
+        >
+          <For each={media()}>
+            {(m: MediaItem) => (
+              <li ng-repeat="mediaItem in post.media" class="ng-scope">
+                <div class="player-status">
+                  <i class="fas fa-play fa-fw ng-scope" onClick={() => playMedia(m)}></i>
+                </div>
+                <span class="track-title ng-binding">{m.title}</span>
+              </li>
+            )}
+          </For>
+        </ul>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/Article/FullArticle.tsx b/src/components/Article/FullArticle.tsx
index ab6d6b07..c516872b 100644
--- a/src/components/Article/FullArticle.tsx
+++ b/src/components/Article/FullArticle.tsx
@@ -65,8 +65,20 @@ export const FullArticle = (props: ArticleProps) => {
         })
       }
     }
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const script = document.createElement('script')
+    script.type = 'text/javascript'
+    script.src = 'https://ackee.discours.io/tracker.js'
+    script.setAttribute('data-ackee-domain-id', 'dfaf6bc4-163c-4885-9d8b-1e72f7064d42')
+    script.setAttribute('data-ackee-server', 'https://ackee.discours.io')
+    script.async = true
+    document.head.appendChild(script)
   })
 
+  //<script async
+  // src="https://ackee.discours.io/tracker.js"
+  // data-ackee-server="https://ackee.discours.io"
+  // data-ackee-domain-id="dfaf6bc4-163c-4885-9d8b-1e72f7064d42"
   return (
     <div class="shout wide-container">
       <article class="col-md-6 shift-content">
diff --git a/src/components/Article/MusicPlayer.tsx b/src/components/Article/MusicPlayer.tsx
deleted file mode 100644
index 4108f681..00000000
--- a/src/components/Article/MusicPlayer.tsx
+++ /dev/null
@@ -1,9 +0,0 @@
-export default (props: { src?: string; cover?: string; title?: string }) => {
-  // TODO: styling
-  return (
-    <div class="audio-track">
-      <audio src={props.src} controls={true} />
-      <span class="audio-title">{props.title || ''}</span>
-    </div>
-  )
-}
diff --git a/src/graphql/query/article-by-slug.ts b/src/graphql/query/article-by-slug.ts
index d0d1fe5c..01bbfef3 100644
--- a/src/graphql/query/article-by-slug.ts
+++ b/src/graphql/query/article-by-slug.ts
@@ -33,6 +33,8 @@ export default gql`
       createdAt
       updatedAt
       publishedAt
+      visibility
+      media
       stat {
         _id: viewed
         viewed
diff --git a/src/graphql/types.gen.ts b/src/graphql/types.gen.ts
index f03b1ea5..8f2e7454 100644
--- a/src/graphql/types.gen.ts
+++ b/src/graphql/types.gen.ts
@@ -35,10 +35,10 @@ export type Author = {
 }
 
 export type AuthorStat = {
+  commented?: Maybe<Scalars['Int']>
   followers?: Maybe<Scalars['Int']>
   followings?: Maybe<Scalars['Int']>
   rating?: Maybe<Scalars['Int']>
-  commented?: Maybe<Scalars['Int']>
 }
 
 export type Chat = {
@@ -730,6 +730,7 @@ export type Shout = {
   lang?: Maybe<Scalars['String']>
   layout?: Maybe<Scalars['String']>
   mainTopic?: Maybe<Scalars['String']>
+  media?: Maybe<Scalars['String']>
   publishedAt?: Maybe<Scalars['DateTime']>
   publishedBy?: Maybe<User>
   slug: Scalars['String']
diff --git a/src/utils/soundwave.ts b/src/utils/soundwave.ts
new file mode 100644
index 00000000..f6d50f91
--- /dev/null
+++ b/src/utils/soundwave.ts
@@ -0,0 +1,92 @@
+/**
+ * A utility function for drawing our line segments
+ * @param {AudioContext} ctx the audio context
+ * @param {number} x  the x coordinate of the beginning of the line segment
+ * @param {number} height the desired height of the line segment
+ * @param {number} width the desired width of the line segment
+ * @param {boolean} isEven whether or not the segmented is even-numbered
+ */
+export const drawLineSegment = (ctx, x, height, width, isEven) => {
+  ctx.lineWidth = 1 // how thick the line is
+  ctx.strokeStyle = '#fff' // what color our line is
+  ctx.beginPath()
+  height = isEven ? height : -height
+  ctx.moveTo(x, 0)
+  ctx.lineTo(x, height)
+  ctx.arc(x + width / 2, height, width / 2, Math.PI, 0, isEven)
+  ctx.lineTo(x + width, 0)
+  ctx.stroke()
+}
+
+/**
+ * Draws the audio file into a canvas element.
+ * @param {Array} normalizedData The filtered array returned from filterData()
+ * @returns {Array} a normalized array of data
+ */
+export const draw = (normalizedData) => {
+  // set up the canvas
+  const canvas = document.querySelector('canvas')
+  const dpr = window.devicePixelRatio || 1
+  const padding = 20
+  canvas.width = canvas.offsetWidth * dpr
+  canvas.height = (canvas.offsetHeight + padding * 2) * dpr
+  const ctx = canvas.getContext('2d')
+  ctx.scale(dpr, dpr)
+  ctx.translate(0, canvas.offsetHeight / 2 + padding) // set Y = 0 to be in the middle of the canvas
+
+  // draw the line segments
+  const width = canvas.offsetWidth / normalizedData.length
+  for (let i = 0; i < normalizedData.length; i++) {
+    const x = width * i
+    let height = normalizedData[i] * canvas.offsetHeight - padding
+    if (height < 0) {
+      height = 0
+    } else if (height > canvas.offsetHeight / 2) {
+      height = height - canvas.offsetHeight / 2
+    }
+    drawLineSegment(ctx, x, height, width, (i + 1) % 2)
+  }
+}
+
+/**
+ * Filters the AudioBuffer retrieved from an external source
+ * @param {AudioBuffer} audioBuffer the AudioBuffer from drawAudio()
+ * @returns {Array} an array of floating point numbers
+ */
+export const filterData = (audioBuffer) => {
+  const rawData = audioBuffer.getChannelData(0) // We only need to work with one channel of data
+  const samples = 70 // Number of samples we want to have in our final data set
+  const blockSize = Math.floor(rawData.length / samples) // the number of samples in each subdivision
+  const filteredData = []
+  for (let i = 0; i < samples; i++) {
+    let blockStart = blockSize * i // the location of the first sample in the block
+    let sum = 0
+    for (let j = 0; j < blockSize; j++) {
+      sum = sum + Math.abs(rawData[blockStart + j]) // find the sum of all the samples in the block
+    }
+    filteredData.push(sum / blockSize) // divide the sum by the block size to get the average
+  }
+  return filteredData
+}
+
+/**
+ * Normalizes the audio data to make a cleaner illustration
+ * @param {Array} filteredData the data from filterData()
+ * @returns {Array} an normalized array of floating point numbers
+ */
+export const normalizeData = (filteredData) => {
+  const multiplier = Math.pow(Math.max(...filteredData), -1)
+  return filteredData.map((n) => n * multiplier)
+}
+
+/**
+ * Retrieves audio from an external source, the initializes the drawing function
+ * @param {AudioContext} audioContext the audio context
+ * @param {String} url the url of the audio we'd like to fetch
+ */
+export const drawAudio = (audioContext, url) => {
+  fetch(url)
+    .then((response) => response.arrayBuffer())
+    .then((arrayBuffer) => audioContext.decodeAudioData(arrayBuffer))
+    .then((audioBuffer) => draw(normalizeData(filterData(audioBuffer))))
+}