tgui: Fixes assets, CDN support (tgstation#52321)

* tgui: Better asset code, CDN support

* Rebuild tgui

* µ-fix

code/__DEFINES/tgui.dm

@@ -21,8 +21,6 @@
 #define TGUI_WINDOW_LOADING 1
 /// Window is free and ready to receive data
 #define TGUI_WINDOW_READY 2
-/// Window is in use by a tgui datum
-#define TGUI_WINDOW_ACTIVE 3
 
 /// Get a window id based on the provided pool index
 #define TGUI_WINDOW_ID(index) "tgui-window-[index]"

code/modules/asset_cache/asset_list.dm

@@ -45,7 +45,7 @@ GLOBAL_LIST_EMPTY(asset_datums)
 		if (!ACI)
 			continue
 		.[asset_name] = ACI.url
-	
+
 
 // For registering or sending multiple others at once
 /datum/asset/group
@@ -86,18 +86,16 @@ GLOBAL_LIST_EMPTY(asset_datums)
 	if (!name)
 		CRASH("spritesheet [type] cannot register without a name")
 	ensure_stripped()
-
+	for(var/size_id in sizes)
+		var/size = sizes[size_id]
+		register_asset("[name]_[size_id].png", size[SPRSZ_STRIPPED])
 	var/res_name = "spritesheet_[name].css"
 	var/fname = "data/spritesheets/[res_name]"
 	fdel(fname)
 	text2file(generate_css(), fname)
 	register_asset(res_name, fcopy_rsc(fname))
 	fdel(fname)
 
-	for(var/size_id in sizes)
-		var/size = sizes[size_id]
-		register_asset("[name]_[size_id].png", size[SPRSZ_STRIPPED])
-
 /datum/asset/spritesheet/send(client/C)
 	if (!name)
 		return

code/modules/asset_cache/asset_list_items.dm

@@ -6,12 +6,6 @@
 		"tgui.bundle.css" = 'tgui/packages/tgui/public/tgui.bundle.css',
 	)
 
-/datum/asset/group/tgui
-	children = list(
-		/datum/asset/simple/tgui,
-		/datum/asset/simple/fontawesome
-	)
-
 /datum/asset/simple/headers
 	assets = list(
 		"alarm_green.gif" 			= 'icons/program_icons/alarm_green.gif',

code/modules/modular_computers/computers/item/computer_ui.dm

@@ -36,9 +36,9 @@
 	ui = SStgui.try_update_ui(user, src, ui)
 	if (!ui)
 		ui = new(user, src, "NtosMain")
-		ui.send_asset(get_asset_datum(/datum/asset/simple/headers))
 		ui.set_autoupdate(TRUE)
 		ui.open()
+		ui.send_asset(get_asset_datum(/datum/asset/simple/headers))
 
 
 /obj/item/modular_computer/ui_data(mob/user)

code/modules/modular_computers/file_system/program.dm

@@ -170,8 +170,8 @@
 	ui = SStgui.try_update_ui(user, src, ui)
 	if(!ui && tgui_id)
 		ui = new(user, src, tgui_id, filedesc)
-		ui.send_asset(get_asset_datum(/datum/asset/simple/headers))
 		ui.open()
+		ui.send_asset(get_asset_datum(/datum/asset/simple/headers))
 
 // CONVENTIONS, READ THIS WHEN CREATING NEW PROGRAM AND OVERRIDING THIS PROC:
 // Topic calls are automagically forwarded from NanoModule this program contains.

code/modules/tgui/tgui.dm

@@ -33,8 +33,6 @@
 	var/status = UI_INTERACTIVE
 	/// Topic state used to determine status/interactability.
 	var/datum/ui_state/state = null
-	/// Asset data to be sent with every update
-	var/list/asset_data
 
 /**
  * public
@@ -82,11 +80,14 @@
 	opened_at = world.time
 	window.acquire_lock(src)
 	if(!window.is_ready())
-		window.initialize()
+		window.initialize(inline_assets = list(
+			get_asset_datum(/datum/asset/simple/tgui),
+		))
 	else
 		window.send_message("ping")
+	window.send_asset(get_asset_datum(/datum/asset/simple/fontawesome))
 	for(var/datum/asset/asset in src_object.ui_assets(user))
-		send_asset(asset)
+		window.send_asset(asset)
 	window.send_message("update", get_payload(
 		with_data = TRUE,
 		with_static_data = TRUE))
@@ -143,14 +144,10 @@
  *
  * required asset datum/asset
  */
-/datum/tgui/proc/send_asset(var/datum/asset/asset)
-	if(!user.client)
-		return
-	if(istype(asset, /datum/asset/spritesheet))
-		var/datum/asset/spritesheet/spritesheet = asset
-		LAZYINITLIST(asset_data)
-		LAZYADD(asset_data["styles"], list(spritesheet.css_filename()))
-	asset.send(user)
+/datum/tgui/proc/send_asset(datum/asset/asset)
+	if(!window)
+		CRASH("send_asset() can only be called after open().")
+	window.send_asset(asset)
 
 /**
  * public
@@ -216,8 +213,6 @@
 	var/static_data = with_static_data && src_object.ui_static_data(user)
 	if(static_data)
 		json_data["static_data"] = static_data
-	if(asset_data)
-		json_data["assets"] = asset_data
 	if(src_object.tgui_shared_states)
 		json_data["shared"] = src_object.tgui_shared_states
 	return json_data

code/modules/tgui/tgui_window.dm

@@ -13,6 +13,7 @@
 	var/datum/tgui/locked_by
 	var/fatally_errored = FALSE
 	var/message_queue
+	var/sent_assets = list()
 
 /**
  * public
@@ -36,8 +37,10 @@
  * Initializes the window with a fresh page. Puts window into the "loading"
  * state. You can begin sending messages right after initializing. Messages
  * will be put into the queue until the window finishes loading.
+ *
+ * optional inline_assets list List of assets to inline into the html.
  */
-/datum/tgui_window/proc/initialize()
+/datum/tgui_window/proc/initialize(inline_assets = list())
 	log_tgui(client, "[id]/initialize")
 	if(!client)
 		return
@@ -52,13 +55,23 @@
 	else
 		options += "titlebar=1;can_resize=1;"
 	// Generate page html
-	// TODO: Make this static
 	var/html = SStgui.basehtml
 	html = replacetextEx(html, "\[tgui:windowId]", id)
-	// Send required assets
-	var/datum/asset/asset
-	asset = get_asset_datum(/datum/asset/group/tgui)
-	asset.send(client)
+	// Process inline assets
+	var/inline_styles = ""
+	var/inline_scripts = ""
+	for(var/datum/asset/asset in inline_assets)
+		var/mappings = asset.get_url_mappings()
+		for(var/name in mappings)
+			var/url = mappings[name]
+			// Not urlencoding since asset strings are considered safe
+			if(copytext(name, -4) == ".css")
+				inline_styles += "<link rel=\"stylesheet\" type=\"text/css\" href=\"[url]\">\n"
+			else if(copytext(name, -3) == ".js")
+				inline_scripts += "<script type=\"text/javascript\" defer src=\"[url]\"></script>\n"
+		asset.send()
+	html = replacetextEx(html, "<!-- tgui:styles -->\n", inline_styles)
+	html = replacetextEx(html, "<!-- tgui:scripts -->\n", inline_scripts)
 	// Open the window
 	client << browse(html, "window=[id];[options]")
 	// Instruct the client to signal UI when the window is closed.
@@ -86,7 +99,7 @@
 		&& pooled \
 		&& pool_index > 0 \
 		&& pool_index <= TGUI_WINDOW_SOFT_LIMIT \
-		&& status >= TGUI_WINDOW_READY
+		&& status == TGUI_WINDOW_READY
 
 /**
  * public
@@ -107,6 +120,9 @@
  * Release the window lock.
  */
 /datum/tgui_window/proc/release_lock()
+	// Clean up assets sent by tgui datum which requested the lock
+	if(locked)
+		sent_assets = list()
 	locked = FALSE
 	locked_by = null
 
@@ -126,8 +142,7 @@
 		send_message("suspend")
 		return
 	log_tgui(client, "[id]/close")
-	locked = FALSE
-	locked_by = null
+	release_lock()
 	status = TGUI_WINDOW_CLOSED
 	message_queue = null
 	// Do not close the window to give user some time
@@ -157,13 +172,30 @@
 	// Pack for sending via output()
 	message = url_encode(message)
 	// Place into queue if window is still loading
-	if(!force && status == TGUI_WINDOW_LOADING)
+	if(!force && status != TGUI_WINDOW_READY)
 		if(!message_queue)
 			message_queue = list()
 		message_queue += list(message)
 		return
 	client << output(message, "[id].browser:update")
 
+/**
+ * public
+ *
+ * Makes an asset available to use in tgui.
+ *
+ * required asset datum/asset
+ */
+/datum/tgui_window/proc/send_asset(datum/asset/asset)
+	if(!client || !asset)
+		return
+	if(istype(asset, /datum/asset/spritesheet))
+		var/datum/asset/spritesheet/spritesheet = asset
+		send_message("asset/stylesheet", spritesheet.css_filename())
+	send_message("asset/mappings", asset.get_url_mappings())
+	sent_assets += list(asset)
+	asset.send(client)
+
 /**
  * private
  *
@@ -184,6 +216,11 @@
 /datum/tgui_window/proc/on_message(type, list/payload, list/href_list)
 	switch(type)
 		if("ready")
+			// Status can be READY if user has refreshed the window.
+			if(status == TGUI_WINDOW_READY)
+				// Resend the assets
+				for(var/asset in sent_assets)
+					send_asset(asset)
 			status = TGUI_WINDOW_READY
 		if("log")
 			if(href_list["fatal"])

tgui/packages/tgui-dev-server/link/client.js

@@ -98,8 +98,8 @@ const sendRawMessage = msg => {
         socket.send(json);
       }
       else {
-        // Keep only 10 latest messages in the queue
-        if (queue.length > 10) {
+        // Keep only 100 latest messages in the queue
+        if (queue.length > 100) {
           queue.shift();
         }
         queue.push(json);

tgui/packages/tgui/assets.js

@@ -9,15 +9,46 @@ import { createLogger } from './logging';
 
 const logger = createLogger('assets');
 
-const loadedAssets = {
-  styles: [],
+const EXCLUDED_PATTERNS = [
+  /v4shim/i,
+];
+
+const loadedStyles = [];
+const loadedMappings = {};
+
+export const loadCSS = url => {
+  if (loadedStyles.includes(url)) {
+    return;
+  }
+  loadedStyles.push(url);
+  logger.log(`loading stylesheet '${url}'`);
+  fgLoadCSS(url);
 };
 
-export const loadCSS = filename => {
-  if (loadedAssets.styles.includes(filename)) {
+export const resolveAsset = name => (
+  loadedMappings[name] || name
+);
+
+export const assetMiddleware = store => next => action => {
+  const { type, payload } = action;
+  if (type === 'asset/stylesheet') {
+    loadCSS(payload);
+    return;
+  }
+  if (type === 'asset/mappings') {
+    for (let name of Object.keys(payload)) {
+      // Skip anything that matches excluded patterns
+      if (EXCLUDED_PATTERNS.some(regex => regex.test(name))) {
+        continue;
+      }
+      const url = payload[name];
+      const ext = name.split('.').pop();
+      loadedMappings[name] = url;
+      if (ext === 'css') {
+        loadCSS(url);
+      }
+    }
     return;
   }
-  loadedAssets.styles.push(filename);
-  logger.log(`loading stylesheet '${filename}'`);
-  fgLoadCSS(filename);
+  next(action);
 };

tgui/packages/tgui/backend.js

@@ -79,7 +79,6 @@ export const backendReducer = (state = initialState, action) => {
     return {
       ...state,
       config,
-      assets: payload.assets || {},
       data,
       shared,
       visible,
@@ -253,7 +252,6 @@ export const sendAct = (action, payload = {}) => {
  *     },
  *   },
  *   data: any,
- *   assets: any,
  *   shared: any,
  *   visible: boolean,
  *   interactive: boolean,

tgui/packages/tgui/index.js

@@ -30,7 +30,6 @@ import './styles/themes/syndicate.scss';
 import { perf } from 'common/perf';
 import { render } from 'inferno';
 import { setupHotReloading } from 'tgui-dev-server/link/client';
-import { loadCSS } from './assets';
 import { backendUpdate, backendSuspendSuccess, selectBackend, sendMessage } from './backend';
 import { setupDrag } from './drag';
 import { logger } from './logging';
@@ -96,8 +95,6 @@ const renderLayout = () => {
   if (initialRender) {
     initialRender = false;
   }
-  // Load assets
-  assets?.styles?.forEach(filename => loadCSS(filename));
 };
 
 // Parse JSON and report all abnormal JSON strings coming from BYOND
@@ -143,9 +140,8 @@ const setupApp = () => {
     logger.debug(`received message '${message?.type}'`);
     const { type, payload } = message;
     if (type === 'update') {
-      window.__ref__ = payload.config.ref;
       if (suspended) {
-        logger.log('reinitializing to:', payload.config.ref);
+        logger.log('resuming');
         initialRender = 'recycled';
       }
       // Backend update dispatches a store action
@@ -162,7 +158,8 @@ const setupApp = () => {
       });
       return;
     }
-    logger.log('unhandled message', message);
+    // Pass the message directly to the store
+    store.dispatch(message);
   };
 
   // Enable hot module reloading
@@ -185,9 +182,6 @@ const setupApp = () => {
     }
     window.update(stateJson);
   }
-
-  // Dynamically load font-awesome from browser's cache
-  loadCSS('font-awesome.css');
 };
 
 // Setup a fatal error reporter

tgui/packages/tgui/interfaces/DnaConsole.js

@@ -3,6 +3,7 @@ import { flow } from 'common/fp';
 import { classes } from 'common/react';
 import { capitalize } from 'common/string';
 import { Fragment } from 'inferno';
+import { resolveAsset } from '../assets';
 import { useBackend } from '../backend';
 import { Box, Button, Collapsible, Dimmer, Divider, Dropdown, Flex, Icon, LabeledList, NumberInput, ProgressBar, Section } from '../components';
 import { Window } from '../layouts';
@@ -777,7 +778,7 @@ const DnaConsoleSequencer = (props, context) => {
             {mutations.map(mutation => (
               <GenomeImage
                 key={mutation.Alias}
-                url={mutation.Image}
+                url={resolveAsset(mutation.Image)}
                 selected={mutation.Alias === sequencerMutation}
                 onClick={() => {
                   act('set_view', {