Revert #773 f7ea95aeea due to critical bug

src/lib/ChatScreens/Chat.svelte

@@ -130,22 +130,9 @@
     $effect.pre(() => {
         blankMessage = (message === '{{none}}' || message === '{{blank}}' || message === '') && idx === -1
     });
-    // Static map for caching markdown parsing results
-    const markdownCache = new Map<string, string>();
-    
     const markParsing = async (data: string, charArg?: string | simpleCharacterArgument, mode?: "normal" | "back", chatID?: number, translateText?:boolean, tries?:number) => {
         let lastParsedQueue = ''
         try {
-            // Create cache key
-            const cacheKey = `${data}-${JSON.stringify(charArg)}-${mode}-${chatID}-${translateText}`;
-            
-            // Use cached result if available and not retranslating
-            if (markdownCache.has(cacheKey) && !retranslate) {
-                lastParsedQueue = markdownCache.get(cacheKey);
-                lastCharArg = charArg;
-                lastChatId = chatID;
-                return lastParsedQueue;
-            }
             if((!isEqual(lastCharArg, charArg)) || (chatID !== lastChatId)){
                 lastParsedQueue = ''
                 lastCharArg = charArg
@@ -197,7 +184,6 @@
                     const marked = await ParseMarkdown(data, charArg, mode, chatID, getCbsCondition())
                     lastParsedQueue = marked
                     lastCharArg = charArg
-                    markdownCache.set(cacheKey, marked);
                     return marked
                 }
                 else if(!DBState.db.legacyTranslation){
@@ -207,7 +193,6 @@
                     translating = false
                     lastParsedQueue = translated
                     lastCharArg = charArg
-                    markdownCache.set(cacheKey, translated);
                     return translated
                 }
                 else{
@@ -217,7 +202,6 @@
                     translating = false
                     lastParsedQueue = translated
                     lastCharArg = charArg
-                    markdownCache.set(cacheKey, translated);
                     return translated
                 }
             }
@@ -225,12 +209,12 @@
                 const marked = await ParseMarkdown(data, charArg, mode, chatID, getCbsCondition())
                 lastParsedQueue = marked
                 lastCharArg = charArg
-                markdownCache.set(cacheKey, marked);
                 return marked
             }   
         } catch (error) {
             //retry
             if(tries > 2){
+
                 alertError(`Error while parsing chat message: ${translateText}, ${error.message}, ${error.stack}`)
                 return data
             }
@@ -241,17 +225,6 @@
         }
     }
 
-    // Limit cache size (runs periodically)
-    function cleanupMarkdownCache() {
-        if (markdownCache.size > 100) {
-            const keys = Array.from(markdownCache.keys());
-            // Delete the oldest 50 items
-            for (let i = 0; i < 50; i++) {
-                markdownCache.delete(keys[i]);
-            }
-        }
-    }
-
     $effect.pre(() => {
         displaya(message)
     });
@@ -262,10 +235,6 @@
         unsubscribers.push(ReloadGUIPointer.subscribe((v) => {
             displaya(message)
         }))
-        
-        // Clean up cache every 3 minutes
-        const cacheCleanupInterval = setInterval(cleanupMarkdownCache, 180000);
-        return () => clearInterval(cacheCleanupInterval);
     })
 
     onDestroy(()=>{
@@ -344,22 +313,11 @@
             style:line-height="{(DBState.db.lineHeight ?? 1.25) * (DBState.db.zoomsize / 100)}rem"
         >
             {#key $ReloadGUIPointer}
-                {#if message && message.length > 10000}
-                    <!-- Delayed rendering for long messages -->
-                    {#await new Promise(resolve => setTimeout(() => resolve(true), 10)) then _}
                 {#await markParsing(msgDisplay, character, 'normal', idx, translated)}
                     {@html lastParsed}
                 {:then md}
                     {@html md}
                 {/await}
-                    {/await}
-                {:else}
-                    {#await markParsing(msgDisplay, character, 'normal', idx, translated)}
-                        {@html lastParsed}
-                    {:then md}
-                        {@html md}
-                    {/await}
-                {/if}
             {/key}
         </span>
     {/if}

src/lib/ChatScreens/ChatScreen.svelte

@@ -5,7 +5,6 @@
     import { CharEmotion, ShowVN, selectedCharID } from "../../ts/stores.svelte";
     import ResizeBox from './ResizeBox.svelte'
     import DefaultChatScreen from "./DefaultChatScreen.svelte";
-    import { clearMessageFormCache } from "../../ts/util";
     import defaultWallpaper from '../../etc/bg.jpg'
     import ChatList from "../Others/ChatList.svelte";
     import TransitionImage from "./TransitionImage.svelte";
@@ -15,7 +14,6 @@
     import ModuleChatMenu from "../Setting/Pages/Module/ModuleChatMenu.svelte";
     let openChatList = $state(false)
     let openModuleList = $state(false)
-    let lastCharacterId = $state(-1);
 
     const wallPaper = `background: url(${defaultWallpaper})`
     const externalStyles = 
@@ -33,25 +31,6 @@
             }
         })()
     });
-    
-    $effect.pre(() => {
-        if ($selectedCharID !== lastCharacterId) {
-            if (lastCharacterId >= 0) {
-                clearMessageFormCache(lastCharacterId);
-                
-                setTimeout(() => {
-                    if (window.gc) {
-                        try {
-                            window.gc();
-                        } catch (e) {
-                            console.log("GC not available");
-                        }
-                    }
-                }, 100);
-            }
-            lastCharacterId = $selectedCharID;
-        }
-    });
 </script>
 
 {#if $ShowVN}

src/lib/ChatScreens/DefaultChatScreen.svelte

@@ -28,10 +28,6 @@
     import { getInlayAsset } from 'src/ts/process/files/inlays';
     import PlaygroundMenu from '../Playground/PlaygroundMenu.svelte';
     import { ConnectionOpenStore } from 'src/ts/sync/multiuser';
-    import { onMount, onDestroy } from "svelte";
-    import AutoresizeArea from "../UI/GUI/TextAreaResizable.svelte";
-    import { alertConfirm, alertClear } from "../../ts/alert";
-    import { clearMessageFormCache } from "../../ts/util";
 
     let messageInput:string = $state('')
     let messageInputTranslate:string = $state('')
@@ -46,107 +42,6 @@
     let toggleStickers:boolean = $state(false)
     let fileInput:string[] = $state([])
 
-    // Virtual scroll related states
-    let visibleStartIndex = $state(0);
-    let visibleEndIndex = $state(30);
-    let chatContainerRef: HTMLElement = $state(null);
-    let scrollPosition = $state(0);
-    let isScrolling = $state(false);
-    let scrollingTimeoutId: number;
-    
-    // Data loading state
-    let isInitialLoading = $state(true);
-    
-    // Function for optimization
-    function updateVisibleMessages(e?: Event) {
-        if (!chatContainerRef) return;
-        
-        const el = chatContainerRef;
-        const scrollTop = el.scrollTop;
-        const containerHeight = el.clientHeight;
-        
-        // Save scroll position
-        scrollPosition = scrollTop;
-        
-        // Update scrolling state
-        isScrolling = true;
-        clearTimeout(scrollingTimeoutId);
-        scrollingTimeoutId = window.setTimeout(() => {
-            isScrolling = false;
-        }, 200);
-        
-        // Optimized infinite scroll logic
-        const scrolled = el.scrollHeight - containerHeight + scrollTop;
-        if (scrolled < 100 && DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message.length > loadPages) {
-            loadPages += 15;
-        }
-        
-        // Limit maximum number of messages to display if there are many
-        if (DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message.length > 200) {
-            // Load only the most recent 200 messages in memory
-            const messageCount = DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message.length;
-            visibleStartIndex = Math.max(0, messageCount - loadPages);
-            visibleEndIndex = messageCount;
-        } else {
-            visibleStartIndex = 0;
-            visibleEndIndex = loadPages;
-        }
-    }
-
-    // Asynchronous chat data loading function
-    async function loadChatDataAsync() {
-        isInitialLoading = true;
-        
-        // Small delay to allow UI rendering
-        await new Promise(resolve => setTimeout(resolve, 0));
-        
-        // Check character change and clear cache
-        if(lastCharId !== $selectedCharID) {
-            clearMessageFormCache(lastCharId);
-            lastCharId = $selectedCharID;
-            rerolls = [];
-            rerollid = -1;
-        }
-        
-        // Process bulk data loading in background
-        await new Promise(resolve => setTimeout(resolve, 0));
-        
-        // Process chat data asynchronously by chunks
-        const messages = DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message;
-        
-        if (messages.length > 100) {
-            // Process large message sets in chunks asynchronously
-            const chunkSize = 30;
-            let processedChunks = 0;
-            
-            for (let i = 0; i < messages.length; i += chunkSize) {
-                const chunk = messages.slice(i, i + chunkSize);
-                // Process each chunk
-                await new Promise(resolve => {
-                    setTimeout(() => {
-                        // Only prepare work here
-                        // Actual rendering will be done later in messageForm
-                        processedChunks++;
-                        resolve(null);
-                    }, 0);
-                });
-                
-                // Determine initial load message count based on progress
-                loadPages = Math.min(messages.length, Math.max(30, processedChunks * chunkSize));
-                
-                // Show all of the last 30 messages
-                if (i >= Math.max(0, messages.length - 30)) {
-                    loadPages = messages.length;
-                }
-            }
-        } else {
-            loadPages = messages.length;
-        }
-        
-        isInitialLoading = false;
-        updateVisibleMessages();
-    }
-
     async function send(){
         return sendMain(false)
     }
@@ -523,16 +418,6 @@
     $effect.pre(() => {
         currentCharacter = DBState.db.characters[$selectedCharID]
     });
-    
-    // Load chat data when character or chat page changes
-    $effect.pre(() => {
-        const charId = $selectedCharID;
-        const chatPage = DBState.db.characters[$selectedCharID]?.chatPage;
-        
-        if (charId >= 0) {
-            loadChatDataAsync();
-        }
-    });
 </script>
 <!-- svelte-ignore a11y_click_events_have_key_events -->
 <!-- svelte-ignore a11y_no_static_element_interactions -->
@@ -546,20 +431,13 @@
             <PlaygroundMenu />
         {/if}
     {:else}
-        <div class="h-full w-full flex flex-col-reverse overflow-y-auto relative default-chat-screen"
+        <div class="h-full w-full flex flex-col-reverse overflow-y-auto relative default-chat-screen"  onscroll={(e) => {
-             bind:this={chatContainerRef}
+            //@ts-ignore  
-             onscroll={updateVisibleMessages}>
+            const scrolled = (e.target.scrollHeight - e.target.clientHeight + e.target.scrollTop)
-             
+            if(scrolled < 100 && DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message.length > loadPages){
-            <!-- Add loading screen -->
+                loadPages += 15
-            {#if isInitialLoading}
+            }
-                <div class="absolute inset-0 flex items-center justify-center bg-darkbg bg-opacity-30 z-10">
+        }}>
-                    <div class="flex flex-col items-center">
-                        <div class="animate-spin rounded-full h-12 w-12 border-b-2 border-textcolor"></div>
-                        <p class="text-textcolor mt-4">{language.loading}</p>
-                    </div>
-                </div>
-            {/if}
-             
             <div class="flex items-stretch mt-2 mb-2 w-full">
                 {#if DBState.db.useChatSticker && currentCharacter.type !== 'group'}
                     <div onclick={()=>{toggleStickers = !toggleStickers}}
@@ -761,9 +639,7 @@
                 )} {send}/>
             {/if}
             
-            {#key loadPages}
             {#each messageForm(DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message, loadPages) as chat, i}
-                    {#if !isScrolling || i < 20}
                 {#if chat.role === 'char'}
                     {#if DBState.db.characters[$selectedCharID].type !== 'group'}
                         <Chat
@@ -806,21 +682,7 @@
                         messageGenerationInfo={chat.generationInfo}
                     />
                 {/if}
-                    {:else}
-                        <!-- Simplified message placeholder for when scrolling -->
-                        <div class="flex max-w-full justify-center opacity-30">
-                            <div class="text-textcolor mt-1 ml-4 mr-4 mb-1 p-2 bg-transparent flex-grow border-t-gray-900 border-opacity-30 border-transparent flexium items-start max-w-full">
-                                <div class="h-8 w-8 bg-textcolor2 rounded-full opacity-30"></div>
-                                <span class="flex flex-col ml-4 w-full max-w-full min-w-0">
-                                    <div class="h-6 w-32 bg-textcolor2 rounded-md opacity-30 mb-2"></div>
-                                    <div class="h-4 w-full bg-textcolor2 rounded-md opacity-30"></div>
-                                </span>
-                            </div>
-                        </div>
-                    {/if}
             {/each}
-            {/key}
-            
             {#if DBState.db.characters[$selectedCharID].chats[DBState.db.characters[$selectedCharID].chatPage].message.length <= loadPages}
                 {#if DBState.db.characters[$selectedCharID].type !== 'group' }
                     <Chat