From 7e86c0e9280bb6e46183c2c358474bfd283e2554 Mon Sep 17 00:00:00 2001
From: Amos Bird <amosbird@gmail.com>
Date: Tue, 23 Jan 2024 23:03:15 +0800
Subject: [PATCH] Compress state of dashboard

---
 programs/server/dashboard.html     | 6 +++---
 programs/server/js/lz-string.js    | 1 +
 src/Server/WebUIRequestHandler.cpp | 9 +++++++++
 3 files changed, 13 insertions(+), 3 deletions(-)
 create mode 100644 programs/server/js/lz-string.js

diff --git a/programs/server/dashboard.html b/programs/server/dashboard.html
index 04fdfb2d3ca..1f32048da79 100644
--- a/programs/server/dashboard.html
+++ b/programs/server/dashboard.html
@@ -5,6 +5,7 @@
     <title>ClickHouse Dashboard</title>
     <link rel="icon" href="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1NCIgaGVpZ2h0PSI0OCIgdmlld0JveD0iMCAwIDkgOCI+PHN0eWxlPi5ve2ZpbGw6I2ZjMH0ucntmaWxsOnJlZH08L3N0eWxlPjxwYXRoIGQ9Ik0wLDcgaDEgdjEgaC0xIHoiIGNsYXNzPSJyIi8+PHBhdGggZD0iTTAsMCBoMSB2NyBoLTEgeiIgY2xhc3M9Im8iLz48cGF0aCBkPSJNMiwwIGgxIHY4IGgtMSB6IiBjbGFzcz0ibyIvPjxwYXRoIGQ9Ik00LDAgaDEgdjggaC0xIHoiIGNsYXNzPSJvIi8+PHBhdGggZD0iTTYsMCBoMSB2OCBoLTEgeiIgY2xhc3M9Im8iLz48cGF0aCBkPSJNOCwzLjI1IGgxIHYxLjUgaC0xIHoiIGNsYXNzPSJvIi8+PC9zdmc+">
     <script src="https://cdn.jsdelivr.net/npm/uplot@1.6.21/dist/uPlot.iife.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/lz-string@1.5.0/libs/lz-string.min.js"></script>
     <style>
         :root {
             --color: black;
@@ -484,7 +485,6 @@
   *
   * TODO:
   * - zoom on the graphs should work on touch devices;
-  * - compress the state for URL's #hash;
   * - footer with "about" or a link to source code;
   * - allow to configure a table on a server to save the dashboards;
   * - if a query returned one value, display this value instead of a diagram;
@@ -1384,7 +1384,7 @@ document.getElementById('params').onsubmit = function(event) {
 function saveState() {
     const state = { host, user, queries, params, search_query, customized };
     history.pushState(state, '',
-        window.location.pathname + (window.location.search || '') + '#' + btoa(JSON.stringify(state)));
+        window.location.pathname + (window.location.search || '') + '#' + LZString.compressToEncodedURIComponent(JSON.stringify(state)));
 }
 
 async function searchQueries() {
@@ -1450,7 +1450,7 @@ window.onpopstate = function(event) {
 if (window.location.hash) {
     try {
         let search_query_, customized_;
-        ({host, user, queries, params, search_query_, customized_} = JSON.parse(atob(window.location.hash.substring(1))));
+        ({host, user, queries, params, search_query_, customized_} = JSON.parse(LZString.decompressFromEncodedURIComponent(window.location.hash.substring(1))));
         // For compatibility with old URLs' hashes
         search_query = search_query_ !== undefined ? search_query_ : search_query;
         customized = customized_ !== undefined ? customized_ : true;
diff --git a/programs/server/js/lz-string.js b/programs/server/js/lz-string.js
new file mode 100644
index 00000000000..534b61ff6b6
--- /dev/null
+++ b/programs/server/js/lz-string.js
@@ -0,0 +1 @@
+var LZString=function(){var r=String.fromCharCode,o="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",n="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-$",e={};function t(r,o){if(!e[r]){e[r]={};for(var n=0;n<r.length;n++)e[r][r.charAt(n)]=n}return e[r][o]}var i={compressToBase64:function(r){if(null==r)return"";var n=i._compress(r,6,function(r){return o.charAt(r)});switch(n.length%4){default:case 0:return n;case 1:return n+"===";case 2:return n+"==";case 3:return n+"="}},decompressFromBase64:function(r){return null==r?"":""==r?null:i._decompress(r.length,32,function(n){return t(o,r.charAt(n))})},compressToUTF16:function(o){return null==o?"":i._compress(o,15,function(o){return r(o+32)})+" "},decompressFromUTF16:function(r){return null==r?"":""==r?null:i._decompress(r.length,16384,function(o){return r.charCodeAt(o)-32})},compressToUint8Array:function(r){for(var o=i.compress(r),n=new Uint8Array(2*o.length),e=0,t=o.length;e<t;e++){var s=o.charCodeAt(e);n[2*e]=s>>>8,n[2*e+1]=s%256}return n},decompressFromUint8Array:function(o){if(null==o)return i.decompress(o);for(var n=new Array(o.length/2),e=0,t=n.length;e<t;e++)n[e]=256*o[2*e]+o[2*e+1];var s=[];return n.forEach(function(o){s.push(r(o))}),i.decompress(s.join(""))},compressToEncodedURIComponent:function(r){return null==r?"":i._compress(r,6,function(r){return n.charAt(r)})},decompressFromEncodedURIComponent:function(r){return null==r?"":""==r?null:(r=r.replace(/ /g,"+"),i._decompress(r.length,32,function(o){return t(n,r.charAt(o))}))},compress:function(o){return i._compress(o,16,function(o){return r(o)})},_compress:function(r,o,n){if(null==r)return"";var e,t,i,s={},u={},a="",p="",c="",l=2,f=3,h=2,d=[],m=0,v=0;for(i=0;i<r.length;i+=1)if(a=r.charAt(i),Object.prototype.hasOwnProperty.call(s,a)||(s[a]=f++,u[a]=!0),p=c+a,Object.prototype.hasOwnProperty.call(s,p))c=p;else{if(Object.prototype.hasOwnProperty.call(u,c)){if(c.charCodeAt(0)<256){for(e=0;e<h;e++)m<<=1,v==o-1?(v=0,d.push(n(m)),m=0):v++;for(t=c.charCodeAt(0),e=0;e<8;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}else{for(t=1,e=0;e<h;e++)m=m<<1|t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t=0;for(t=c.charCodeAt(0),e=0;e<16;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}0==--l&&(l=Math.pow(2,h),h++),delete u[c]}else for(t=s[c],e=0;e<h;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;0==--l&&(l=Math.pow(2,h),h++),s[p]=f++,c=String(a)}if(""!==c){if(Object.prototype.hasOwnProperty.call(u,c)){if(c.charCodeAt(0)<256){for(e=0;e<h;e++)m<<=1,v==o-1?(v=0,d.push(n(m)),m=0):v++;for(t=c.charCodeAt(0),e=0;e<8;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}else{for(t=1,e=0;e<h;e++)m=m<<1|t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t=0;for(t=c.charCodeAt(0),e=0;e<16;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1}0==--l&&(l=Math.pow(2,h),h++),delete u[c]}else for(t=s[c],e=0;e<h;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;0==--l&&(l=Math.pow(2,h),h++)}for(t=2,e=0;e<h;e++)m=m<<1|1&t,v==o-1?(v=0,d.push(n(m)),m=0):v++,t>>=1;for(;;){if(m<<=1,v==o-1){d.push(n(m));break}v++}return d.join("")},decompress:function(r){return null==r?"":""==r?null:i._decompress(r.length,32768,function(o){return r.charCodeAt(o)})},_decompress:function(o,n,e){var t,i,s,u,a,p,c,l=[],f=4,h=4,d=3,m="",v=[],g={val:e(0),position:n,index:1};for(t=0;t<3;t+=1)l[t]=t;for(s=0,a=Math.pow(2,2),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;switch(s){case 0:for(s=0,a=Math.pow(2,8),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;c=r(s);break;case 1:for(s=0,a=Math.pow(2,16),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;c=r(s);break;case 2:return""}for(l[3]=c,i=c,v.push(c);;){if(g.index>o)return"";for(s=0,a=Math.pow(2,d),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;switch(c=s){case 0:for(s=0,a=Math.pow(2,8),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;l[h++]=r(s),c=h-1,f--;break;case 1:for(s=0,a=Math.pow(2,16),p=1;p!=a;)u=g.val&g.position,g.position>>=1,0==g.position&&(g.position=n,g.val=e(g.index++)),s|=(u>0?1:0)*p,p<<=1;l[h++]=r(s),c=h-1,f--;break;case 2:return v.join("")}if(0==f&&(f=Math.pow(2,d),d++),l[c])m=l[c];else{if(c!==h)return null;m=i+i.charAt(0)}v.push(m),l[h++]=i+m.charAt(0),i=m,0==--f&&(f=Math.pow(2,d),d++)}}};return i}();"function"==typeof define&&define.amd?define(function(){return LZString}):"undefined"!=typeof module&&null!=module?module.exports=LZString:"undefined"!=typeof angular&&null!=angular&&angular.module("LZString",[]).factory("LZString",function(){return LZString});
diff --git a/src/Server/WebUIRequestHandler.cpp b/src/Server/WebUIRequestHandler.cpp
index ac7a3bfccf3..e45d2a55acb 100644
--- a/src/Server/WebUIRequestHandler.cpp
+++ b/src/Server/WebUIRequestHandler.cpp
@@ -17,6 +17,7 @@
 INCBIN(resource_play_html, SOURCE_DIR "/programs/server/play.html");
 INCBIN(resource_dashboard_html, SOURCE_DIR "/programs/server/dashboard.html");
 INCBIN(resource_uplot_js, SOURCE_DIR "/programs/server/js/uplot.js");
+INCBIN(resource_lz_string_js, SOURCE_DIR "/programs/server/js/lz-string.js");
 INCBIN(resource_binary_html, SOURCE_DIR "/programs/server/binary.html");
 
 
@@ -59,6 +60,9 @@ void WebUIRequestHandler::handleRequest(HTTPServerRequest & request, HTTPServerR
         static re2::RE2 uplot_url = R"(https://[^\s"'`]+u[Pp]lot[^\s"'`]*\.js)";
         RE2::Replace(&html, uplot_url, "/js/uplot.js");
 
+        static re2::RE2 lz_string_url = R"(https://[^\s"'`]+lz-string[^\s"'`]*\.js)";
+        RE2::Replace(&html, lz_string_url, "/js/lz-string.js");
+
         WriteBufferFromHTTPServerResponse(response, request.getMethod() == HTTPRequest::HTTP_HEAD, keep_alive_timeout).write(html);
     }
     else if (request.getURI().starts_with("/binary"))
@@ -71,6 +75,11 @@ void WebUIRequestHandler::handleRequest(HTTPServerRequest & request, HTTPServerR
         response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_OK);
         WriteBufferFromHTTPServerResponse(response, request.getMethod() == HTTPRequest::HTTP_HEAD, keep_alive_timeout).write(reinterpret_cast<const char *>(gresource_uplot_jsData), gresource_uplot_jsSize);
     }
+    else if (request.getURI() == "/js/lz-string.js")
+    {
+        response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_OK);
+        WriteBufferFromHTTPServerResponse(response, request.getMethod() == HTTPRequest::HTTP_HEAD, keep_alive_timeout).write(reinterpret_cast<const char *>(gresource_lz_string_jsData), gresource_lz_string_jsSize);
+    }
     else
     {
         response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_NOT_FOUND);