From d197565fcc5ed91913b5d682ac42b482cfde400b Mon Sep 17 00:00:00 2001
From: Bofh <bofh@nogafam.es>
Date: Sat, 17 Dec 2022 19:22:57 +0100
Subject: [PATCH] Create client-side javascript cache-busting system for API

---
 index.php          |  5 ++++
 js/base.php        | 58 ++++++++++++++++++++++++++++++++++++++++------
 views/instance.php |  6 ++---
 3 files changed, 59 insertions(+), 10 deletions(-)

diff --git a/index.php b/index.php
index f30d6d6..64c97ae 100644
--- a/index.php
+++ b/index.php
@@ -23,6 +23,11 @@ window.consts = {
 };
 window.view = {};
 window.cache = {};
+window.http_cachebuster = {
+	'api/v1/http/[^\/]+/accounts/[^\/]+':				'users',
+	'api/v1/config/trusted_users/add':					'users',
+	'api/v1/cache/put?keys=temp_hidden':				'users',
+};
 </script>
 <script>
 function apcontrol_title(str) {
diff --git a/js/base.php b/js/base.php
index 88823bd..78d7faa 100644
--- a/js/base.php
+++ b/js/base.php
@@ -328,16 +328,60 @@ const http = {
 		}
 		E.custom.loader.hide();
 	},
-	request: function(method, path, payload, callbk) {
+	cache: {
+		buster_process: function(path) {
+			if (window.http_cachebuster === undefined)
+				return false;
+			const ks = Object.keys(window.http_cachebuster);
+			var keys = null;
+			for (var i = 0; i < ks.length; i++) {
+				if (path.match(new RegExp(ks[i])) || path.startsWith(ks[i])) {
+					keys = window.http_cachebuster[ks[i]];
+					keys = keys.trim().split('|');
+					for (var j = 0; j < keys.length; j++)
+						keys[j] = keys[j].trim();
+				}
+			}
+			if (keys === null)
+				return false;
+			for (var i = 0; i < keys.length; i++)
+				http.cache.bust(keys[i]);
+		},
+		bust: function(key) {
+			localStorage['http_cachekey__'+key] = (new Date()).getTime();
+		},
+		bust_if_new: function(key) {
+			if (localStorage['http_cachekey__'+key] === undefined)
+				http.cache.bust(key);
+		},
+		get: function(key) {
+			return localStorage['http_cachekey__'+key] || (new Date()).getTime();
+		},
+	},
+	request: function(method, path, payload, callbk, cache_key) {
+		cache_key = cache_key || null;
+		payload = payload || null;
+		callbk = callbk || null;
+
 		//console.log(path); printstack();
 		const httpid = uuidv4();
 		const httpdiv = document.getElementById('http');
 		const httpts  = new Date().getTime();
 		if (httpdiv !== null)
 			httpdiv.innerHTML += '<div id="http-'+httpts+'">'+method+' '+path+'</div>';
+
 		document.activeElement.blur();
-		payload = payload || null;
-		callbk = callbk || null;
+		http.cache.buster_process(path);
+		var cachestr = '';
+		if (cache_key !== null) {
+			http.cache.bust_if_new(cache_key);
+			var cacheval = http.cache.get(cache_key);
+			if (!path.includes('?'))
+				cachestr = '?_c='+cacheval;
+			else cachestr = '&_c='+cacheval;
+		}
+		path += cachestr;
+
 		const oReq = new XMLHttpRequest();
 		oReq.addEventListener("load", function() {
 			delete window.http_requests[httpid];
@@ -368,11 +412,11 @@ const http = {
 		oReq.send(JSON_to_URLEncoded(payload));
 		window.http_requests[httpid] = oReq;
 	},
-	get: function(path, payload, callbk) {
-		return http.request('GET',  path, payload, callbk);
+	get: function(path, payload, callbk, cache_key) {
+		return http.request('GET',  path, payload, callbk, cache_key);
 	},
-	post: function(path, payload, callbk) {
-		return http.request('POST', path, payload, callbk);
+	post: function(path, payload, callbk, cache_key) {
+		return http.request('POST', path, payload, callbk, cache_key);
 	},
 	API: {
 	}
diff --git a/views/instance.php b/views/instance.php
index 4e26790..7b3d5aa 100644
--- a/views/instance.php
+++ b/views/instance.php
@@ -140,7 +140,7 @@ window.view.instance = {
 				if (!confirm('Are you sure you want to suspend this user?')) return false;
 				const hargs = get_hash_arguments();
 
-				http.get(`api/v1/http/mastodon/accounts/suspend?instance=${hargs.instance}&id=${_id}`,
+				http.get(`api/v1/http/${hargs.software}/accounts/suspend?instance=${hargs.instance}&id=${_id}`,
 				{}, function(js) {
 					toast.info('User has been successfully suspended');
 				});
@@ -149,7 +149,7 @@ window.view.instance = {
 			silence: function(_id) {
 				const hargs = get_hash_arguments();
 
-				http.get(`api/v1/http/mastodon/accounts/silence?instance=${hargs.instance}&id=${_id}`,
+				http.get(`api/v1/http/${hargs.software}/accounts/silence?instance=${hargs.instance}&id=${_id}`,
 				{}, function(js) {
 					toast.info('User has been successfully silenced');
 				});
@@ -401,7 +401,7 @@ window.view.instance = {
 					E.template('#paging.bottom', function(TPL) {
 						return E.elemid('paging').innerHTML;
 					});
-				});
+				}, 'users');
 			},
 			save_filter: function() {
 				const data = window.view.instance.do.filter_users.get_current_filter();