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script.js
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const server_base_url = 'https://leetcode-music-player-1.onrender.com';
// const server_base_url = 'http://localhost:8080';
// Rating Graph ---------------------------------------
const ratingGraph = (arr) => {
const line_con = document.querySelector("g.highcharts-series.highcharts-series-0.highcharts-line-series > path.highcharts-graph");
const lines = document.querySelectorAll("g.highcharts-series.highcharts-series-0.highcharts-line-series > path.highcharts-graph .highcharts-point");
let x_min = 3.578431372549;
let x_max = 361.42156862745;
let n = 200;
function makeD() {
let d = '';
let x_range = x_max - x_min;
let bias = x_range / 2;
// let max_h = 50;
let idx = 0;
const emp_factor = 4; // used to nudge y a little (relative to its neighbour)
let prev_y = -100;
for (let x = x_min; x <= (x_max + bias); x += x_range / n) {
// let y = Math.floor(Math.random() * max_h); // tweak this according to music
let y = (arr[idx * 3] / 255) * 50; // tweak this according to music
let y_emp = y;
if(prev_y < 0) {
prev_y = y;
} else {
let dy = y - prev_y;
prev_y = y;
y_emp += dy * emp_factor;
}
y = y_emp;
y = 50 - y; // invert y
idx++;
if (x == x_min) {
d += `M ${x} ${y}`;
} else {
d += `L ${x} ${y}`;
}
const color = `rgb(255, 161, 22, ${Math.max(0, y / 50 - 0.5)})`;
// if(idx in lines) {
// // lines[idx].setAttribute('fill', color);
// }
}
return d;
}
line_con.setAttribute('d', makeD())
};
// -----------------------------------------------------
// Heatmap --------------------------------------------
const heatmap = () => {
// const fill_colors = ['var(--green-10)','var(--green-20)','var(--green-40)','var(--green-60)','var(--green-80)','var(--green-100)','var(--fill-tertiary)'];
const fill_colors = ['var(--green-10)', 'var(--green-20)', 'var(--green-40)', 'var(--green-60)', 'var(--green-80)'];
const sel = document.querySelectorAll('g.week > rect');
// console.log(sel);
sel.forEach(el => el.setAttribute('fill', fill_colors[Math.floor(Math.random() * fill_colors.length)]))
};
//-----------------------------------------------------
// Height charts --------------------------------------
const heightCharts = (arr) => {
const bars = document.querySelectorAll(".highcharts-series-0 > .highcharts-point");
// let start_x = -16.5 * 2;
let start_x = -18;
let incs = [17, 16];
let bottom = 115.5;
let min_h = 10;
let max_h = 100;
// 1 2 3
// 17 1*17 + 1*16 2*17 + 1 * 16
const makeD = (n, h) => {
let a = Math.ceil(n / 2);
let b = n - a;
let base_x = start_x + a * incs[0] + b * incs[1];
let base_y = bottom - h;
return `M ${5.5 + base_x} ${base_y}
L ${16.5 + base_x} ${base_y}
A 2 2 0 0 1 ${18.5 + base_x} ${base_y + 2}
L ${18.5 + base_x} 115.5
A 0 0 0 0 1 ${18.5 + base_x} 115.5
L ${3.5 + base_x} 115.5
A 0 0 0 0 1 ${3.5 + base_x} 115.5
L ${3.5 + base_x} ${base_y + 2}
A 2 2 0 0 1 ${5.5 + base_x} ${base_y}
Z`
.split('\n')
.join(' ');
}
bars.forEach((bar, idx) => {
if (idx == 0) bar.setAttribute('fill', 'transparent');
if (idx == 0) bar.setAttribute('stroke', 'transparent');
bar.setAttribute('d', makeD(idx, min_h + (arr[idx * 5] / 255) * (max_h - min_h)));
})
};
// -----------------------------------------------------
const setupMeter = () => {
const el = `
<g class="origin-center translate-x-0" style="rotate:90deg">
<circle cx="50" cy="50" r="42" class="fill-transparent qa_6R stroke-[#F0F0F0] dark:stroke-[#434343]" style="stroke-width: 3; stroke-linecap: round;">
</circle>
<circle cx="50" cy="50" r="42" class="fill-transparent qa_6R stroke-sd-easy" style="stroke-width: 3; stroke-linecap: round; stroke-dasharray: 315; stroke-dashoffset: ${315};" id="IM_METER_BUDDY">
</circle>
</g>
`;
const meter_container = document.querySelector('g[clip-path="url(#bar-mask)"]');
meter_container.innerHTML = el;
}
const meter = (arr) => {
const meter_el = document.getElementById('IM_METER_BUDDY');
// meter_el.style.strokeDashoffset = (315 - (arr[0] / 255) * 260);
// meter_el.style.strokeDasharray = (315 - (arr[0] / 255) * 260);
meter_el.setAttribute('class', `fill-transparent qa_6R stroke-sd-${arr[0] < 100 ? 'easy' : (arr[0] < 200 ? 'medium' : 'hard')}`);
meter_el.setAttribute('style', `stroke-width: 3; stroke-linecap: round; stroke-dasharray: 315; stroke-dashoffset: ${315 - (arr[0] / 255) * 260};`);
};
const meter2 = (arr) => {
const el = `
<g class="origin-center translate-x-0" style="rotate:90deg">
<circle cx="50" cy="50" r="42" class="fill-transparent qa_6R stroke-[#F0F0F0] dark:stroke-[#434343]" style="stroke-width: 3; stroke-linecap: round;">
</circle>
<circle cx="50" cy="50" r="42" class="fill-transparent qa_6R stroke-sd-${arr[0] < 100 ? 'easy' : (arr[0] < 200 ? 'medium' : 'hard')}" style="stroke-width: 3; stroke-linecap: round; stroke-dasharray: 315; stroke-dashoffset: ${315 - (arr[0] / 255) * 260};">
</circle>
</g>
`;
const meter_container = document.querySelector('g[clip-path="url(#bar-mask)"]');
meter_container.innerHTML = el;
};
// -----------------------------------------------------
const getGifBadgeUrl = ( month, year) =>{
month = +month;
year = +year;
return `https://assets.leetcode.com/static_assets/public/images/badges/${year}/gif/${year}-${month < 10 ? '0' : ''}${month}.gif`;
}
const getYearMonthFromBadgeUrl=(url) => {
// url is something like /static/images/badges/dcc-2024-5.png
if(url){
const img_name = url.split('/').pop(); // dcc-2024-5.png
if(img_name){
const img_name_tok = img_name.split('-');
if(img_name_tok.length == 3){
const year = img_name_tok[1];
const month = img_name_tok[2].split('.')[0];
if(year && month){
return {year, month};
}
}
}
}
return null;
}
const animateBadges = () => {
const heatmap_badges = document.querySelectorAll('image');
heatmap_badges.forEach((badge, idx)=>{
const attrib = badge.getAttribute('xlink:href');
const yearMonth = getYearMonthFromBadgeUrl(attrib);
if(yearMonth){
const {year, month} = yearMonth;
const gif_url = getGifBadgeUrl(month, year);
setTimeout(()=>{
badge.setAttribute('xlink:href', gif_url);
}, idx * 500); // add .5 seconds delay between each gif
}
});
const profile_badge = document.querySelector("div[class='ml-1'] img[class='h-\[12px\]']");
const attrib = profile_badge?.getAttribute('src');
if(attrib){
const yearMonth = getYearMonthFromBadgeUrl(attrib);
if(yearMonth){
const {year, month} = yearMonth;
const gif_url = getGifBadgeUrl(month, year);
profile_badge.setAttribute('src', gif_url);
}
}
}
const animateOthers = () => {
const streak_days = document.querySelector("#headlessui-popover-button-\\:r2\\:")
const profile_img_top = document.querySelector('#navbar_user_avatar img');
const profile_img_left = document.querySelector('img[alt="Avatar"]');
streak_days?.classList.add('animate-pulse');
profile_img_top?.classList.add('animate-spin');
profile_img_left?.setAttribute('src', `${server_base_url}/alan-walker-glitch.gif`);
}
const audio_container = document.querySelector("#__next > div.flex.min-h-screen.min-w-\\[360px\\].flex-col.text-label-1.dark\\:text-dark-label-1.bg-layer-bg.dark\\:bg-dark-layer-bg > div.mx-auto.w-full.grow.p-4.md\\:max-w-\\[888px\\].md\\:p-6.lg\\:max-w-screen-xl > div > div.lc-lg\\:max-w-\\[calc\\(100\\%_-_316px\\)\\].w-full > div.lc-xl\\:flex-row.lc-xl\\:space-y-0.flex.w-full.flex-col.space-x-0.space-y-4.lc-xl\\:space-x-4 > div.bg-layer-1.dark\\:bg-dark-layer-1.shadow-down-01.dark\\:shadow-dark-down-01.rounded-lg.h-\\[180px\\].w-full.flex-1 > div > div");
// const audio_url = 'https://github.com/PrashanthKumar0/Fire-Audio-Visualizer/raw/master/music.mp3';
// const audio_url = 'http://localhost:8080/music.mp3';
const audio_url = `${server_base_url}/music.m4a`;
const audio = new Audio(audio_url);
audio.crossOrigin = "anonymous";
audio.controls = true;
audio_container.innerHTML = "";
audio_container.prepend(audio);
let audCtx = new AudioContext();
let analyser = audCtx.createAnalyser();
let audSrc = audCtx.createMediaElementSource(audio);
audSrc.connect(analyser);
analyser.connect(audCtx.destination);
let arr = new Uint8Array(analyser.frequencyBinCount);
setupMeter();
animateOthers();
animateBadges();
loop();
// setInterval(loop, 500)
var g_time = performance.now();
var g_heatmap_step_size = 300;
function loop() {
let time = performance.now();
let dt = time - g_time;
if(dt > g_heatmap_step_size) {
g_time = time;
}
analyser.getByteFrequencyData(arr);
meter(arr);
// meter2(arr);
ratingGraph(arr);
heightCharts(arr);
if(dt > g_heatmap_step_size){
heatmap();
}
requestAnimationFrame(loop);
}