feat: add assistant view and configuration editor components

Introduced a new AssistantView component for enhanced interaction with the AI assistant, allowing users to send messages and receive responses. Implemented a ConfigEditorModal for editing configuration files with JSON validation and history management. Updated the App component to integrate these new features, improving user experience and functionality in managing AI settings.

1 files changed, 436 insertions, 0 deletions

diff --git a/ui/src/components/AssistantView.svelte b/ui/src/components/AssistantView.svelte
new file mode 100644
index 0000000..54509a5
--- /dev/null
+++ b/ui/src/components/AssistantView.svelte
@@ -0,0 +1,436 @@
+<script lang="ts">
+  import { assistantState } from '../stores/assistant.svelte';
+  import { settingsState } from '../stores/settings.svelte';
+  import { Send, Bot, RefreshCw, Trash2, AlertTriangle, Settings, Brain, ChevronDown } from 'lucide-svelte';
+  import { uiState } from '../stores/ui.svelte';
+  import { marked } from 'marked';
+  import { onMount } from 'svelte';
+
+  let input = $state('');
+  let messagesContainer: HTMLDivElement | undefined = undefined;
+
+  function parseMessageContent(content: string) {
+    if (!content) return { thinking: null, content: '', isThinking: false };
+    
+    // Support both <thinking> and <think> (DeepSeek uses <think>)
+    let startTag = '<thinking>';
+    let endTag = '</thinking>';
+    let startIndex = content.indexOf(startTag);
+    
+    if (startIndex === -1) {
+        startTag = '<think>';
+        endTag = '</think>';
+        startIndex = content.indexOf(startTag);
+    }
+    
+    // Also check for encoded tags if they weren't decoded properly
+    if (startIndex === -1) {
+        startTag = '\u003cthink\u003e';
+        endTag = '\u003c/think\u003e';
+        startIndex = content.indexOf(startTag);
+    }
+    
+    if (startIndex !== -1) {
+        const endIndex = content.indexOf(endTag, startIndex);
+        
+        if (endIndex !== -1) {
+            // Completed thinking block
+            // We extract the thinking part and keep the rest (before and after)
+            const before = content.substring(0, startIndex);
+            const thinking = content.substring(startIndex + startTag.length, endIndex).trim();
+            const after = content.substring(endIndex + endTag.length);
+            
+            return {
+                thinking,
+                content: (before + after).trim(),
+                isThinking: false
+            };
+        } else {
+            // Incomplete thinking block (still streaming)
+            const before = content.substring(0, startIndex);
+            const thinking = content.substring(startIndex + startTag.length).trim();
+            
+            return {
+                thinking,
+                content: before.trim(),
+                isThinking: true
+            };
+        }
+    }
+    
+    return { thinking: null, content, isThinking: false };
+  }
+
+  function renderMarkdown(content: string): string {
+    if (!content) return '';
+    try {
+      // marked.parse returns string synchronously when async is false (default)
+      return marked(content, { breaks: true, gfm: true }) as string;
+    } catch {
+      return content;
+    }
+  }
+
+  function scrollToBottom() {
+    if (messagesContainer) {
+      setTimeout(() => {
+        if (messagesContainer) {
+          messagesContainer.scrollTop = messagesContainer.scrollHeight;
+        }
+      }, 0);
+    }
+  }
+
+  onMount(() => {
+    assistantState.init();
+  });
+
+  // Scroll to bottom when messages change
+  $effect(() => {
+    // Access reactive state
+    const _len = assistantState.messages.length;
+    const _processing = assistantState.isProcessing;
+    // Scroll on next tick
+    if (_len > 0 || _processing) {
+      scrollToBottom();
+    }
+  });
+
+  async function handleSubmit() {
+    if (!input.trim() || assistantState.isProcessing) return;
+    const text = input;
+    input = '';
+    const provider = settingsState.settings.assistant.llm_provider;
+    const endpoint = provider === 'ollama' 
+      ? settingsState.settings.assistant.ollama_endpoint 
+      : settingsState.settings.assistant.openai_endpoint;
+    await assistantState.sendMessage(
+      text, 
+      settingsState.settings.assistant.enabled,
+      provider,
+      endpoint
+    );
+  }
+
+  function handleKeydown(e: KeyboardEvent) {
+    if (e.key === 'Enter' && !e.shiftKey) {
+      e.preventDefault();
+      handleSubmit();
+    }
+  }
+
+  function getProviderName(): string {
+    const provider = settingsState.settings.assistant.llm_provider;
+    if (provider === 'ollama') {
+      return `Ollama (${settingsState.settings.assistant.ollama_model})`;
+    } else if (provider === 'openai') {
+      return `OpenAI (${settingsState.settings.assistant.openai_model})`;
+    }
+    return provider;
+  }
+
+  function getProviderHelpText(): string {
+    const provider = settingsState.settings.assistant.llm_provider;
+    if (provider === 'ollama') {
+      return `Please ensure Ollama is installed and running at ${settingsState.settings.assistant.ollama_endpoint}.`;
+    } else if (provider === 'openai') {
+      return "Please check your OpenAI API key in Settings > AI Assistant.";
+    }
+    return "";
+  }
+</script>
+
+<div class="h-full w-full flex flex-col gap-4 p-4 lg:p-8 animate-in fade-in zoom-in-95 duration-300">
+  <div class="flex items-center justify-between mb-2">
+    <div class="flex items-center gap-3">
+      <div class="p-2 bg-indigo-500/20 rounded-lg text-indigo-400">
+        <Bot size={24} />
+      </div>
+      <div>
+        <h2 class="text-2xl font-bold">Game Assistant</h2>
+        <p class="text-zinc-400 text-sm">Powered by {getProviderName()}</p>
+      </div>
+    </div>
+    
+    <div class="flex items-center gap-2">
+       {#if !settingsState.settings.assistant.enabled}
+        <div class="flex items-center gap-2 px-3 py-1.5 bg-zinc-500/10 text-zinc-400 rounded-full text-xs font-medium border border-zinc-500/20">
+            <AlertTriangle size={14} />
+            <span>Disabled</span>
+        </div>
+       {:else if !assistantState.isProviderHealthy}
+        <div class="flex items-center gap-2 px-3 py-1.5 bg-red-500/10 text-red-400 rounded-full text-xs font-medium border border-red-500/20">
+            <AlertTriangle size={14} />
+            <span>Offline</span>
+        </div>
+       {:else}
+        <div class="flex items-center gap-2 px-3 py-1.5 bg-emerald-500/10 text-emerald-400 rounded-full text-xs font-medium border border-emerald-500/20">
+            <div class="w-2 h-2 rounded-full bg-emerald-500 animate-pulse"></div>
+            <span>Online</span>
+        </div>
+       {/if}
+
+       <button 
+         onclick={() => assistantState.checkHealth()}
+         class="p-2 hover:bg-white/5 rounded-lg text-zinc-400 hover:text-white transition-colors"
+         title="Check Connection"
+       >
+         <RefreshCw size={18} class={assistantState.isProcessing ? "animate-spin" : ""} />
+       </button>
+       
+       <button 
+         onclick={() => assistantState.clearHistory()}
+         class="p-2 hover:bg-white/5 rounded-lg text-zinc-400 hover:text-white transition-colors"
+         title="Clear History"
+       >
+         <Trash2 size={18} />
+       </button>
+
+       <button 
+         onclick={() => uiState.setView('settings')}
+         class="p-2 hover:bg-white/5 rounded-lg text-zinc-400 hover:text-white transition-colors"
+         title="Settings"
+       >
+         <Settings size={18} />
+       </button>
+    </div>
+  </div>
+
+  <!-- Chat Area -->
+  <div class="flex-1 bg-black/20 border border-white/5 rounded-xl overflow-hidden flex flex-col relative">
+    {#if assistantState.messages.length === 0}
+      <div class="absolute inset-0 flex flex-col items-center justify-center text-zinc-500 gap-4 p-8 text-center">
+        <Bot size={48} class="opacity-20" />
+        <div class="max-w-md">
+            <p class="text-lg font-medium text-zinc-300 mb-2">How can I help you today?</p>
+            <p class="text-sm opacity-70">I can analyze your game logs, diagnose crashes, or explain mod features.</p>
+        </div>
+        {#if !settingsState.settings.assistant.enabled}
+            <div class="bg-zinc-500/10 border border-zinc-500/20 rounded-lg p-4 text-sm text-zinc-400 mt-4 max-w-sm">
+                Assistant is disabled. Enable it in <button onclick={() => uiState.setView('settings')} class="text-indigo-400 hover:underline">Settings > AI Assistant</button>.
+            </div>
+        {:else if !assistantState.isProviderHealthy}
+            <div class="bg-red-500/10 border border-red-500/20 rounded-lg p-4 text-sm text-red-400 mt-4 max-w-sm">
+                {getProviderHelpText()}
+            </div>
+        {/if}
+      </div>
+    {/if}
+
+    <div 
+        bind:this={messagesContainer}
+        class="flex-1 overflow-y-auto p-4 space-y-4 scroll-smooth"
+    >
+      {#each assistantState.messages as msg, idx}
+        <div class="flex gap-3 {msg.role === 'user' ? 'justify-end' : 'justify-start'}">
+          {#if msg.role === 'assistant'}
+            <div class="w-8 h-8 rounded-full bg-indigo-500/20 flex items-center justify-center text-indigo-400 shrink-0 mt-1">
+              <Bot size={16} />
+            </div>
+          {/if}
+          
+          <div class="max-w-[80%] p-3 rounded-2xl {msg.role === 'user' ? 'bg-indigo-600 text-white rounded-tr-none' : 'bg-zinc-800/50 text-zinc-200 rounded-tl-none border border-white/5'}">
+            {#if msg.role === 'user'}
+              <div class="break-words whitespace-pre-wrap">
+                {msg.content}
+              </div>
+            {:else}
+              {@const parsed = parseMessageContent(msg.content)}
+              
+              <!-- Thinking Block -->
+              {#if parsed.thinking}
+                  <div class="mb-3 max-w-full overflow-hidden">
+                      <details class="group" open={parsed.isThinking}>
+                          <summary class="list-none cursor-pointer flex items-center gap-2 text-zinc-500 hover:text-zinc-300 transition-colors text-xs font-medium select-none bg-black/20 p-2 rounded-lg border border-white/5 w-fit mb-2 outline-none">
+                              <Brain size={14} />
+                              <span>Thinking Process</span>
+                              <ChevronDown size={14} class="transition-transform duration-200 group-open:rotate-180" />
+                          </summary>
+                          <div class="pl-3 border-l-2 border-zinc-700 text-zinc-500 text-xs italic leading-relaxed whitespace-pre-wrap font-mono max-h-96 overflow-y-auto custom-scrollbar bg-black/10 p-2 rounded-r-md">
+                              {parsed.thinking}
+                              {#if parsed.isThinking}
+                                  <span class="inline-block w-1.5 h-3 bg-zinc-500 ml-1 animate-pulse align-middle"></span>
+                              {/if}
+                          </div>
+                      </details>
+                  </div>
+              {/if}
+
+              <!-- Markdown rendered content for assistant -->
+              <div class="markdown-content prose prose-invert prose-sm max-w-none">
+                {#if parsed.content}
+                  {@html renderMarkdown(parsed.content)}
+                {:else if assistantState.isProcessing && idx === assistantState.messages.length - 1 && !parsed.isThinking}
+                  <span class="inline-flex items-center gap-1">
+                    <span class="w-2 h-2 bg-zinc-400 rounded-full animate-pulse"></span>
+                    <span class="w-2 h-2 bg-zinc-400 rounded-full animate-pulse" style="animation-delay: 0.2s"></span>
+                    <span class="w-2 h-2 bg-zinc-400 rounded-full animate-pulse" style="animation-delay: 0.4s"></span>
+                  </span>
+                {/if}
+              </div>
+
+              <!-- Generation Stats -->
+              {#if msg.stats}
+                <div class="mt-3 pt-3 border-t border-white/5 text-[10px] text-zinc-500 font-mono flex flex-wrap gap-x-4 gap-y-1 opacity-70 hover:opacity-100 transition-opacity select-none">
+                    <div class="flex gap-1" title="Tokens generated">
+                        <span>Eval:</span>
+                        <span class="text-zinc-400">{msg.stats.eval_count} tokens</span>
+                    </div>
+                    <div class="flex gap-1" title="Total duration">
+                        <span>Time:</span>
+                        <span class="text-zinc-400">{(msg.stats.total_duration / 1e9).toFixed(2)}s</span>
+                    </div>
+                    {#if msg.stats.eval_duration > 0}
+                        <div class="flex gap-1" title="Generation speed">
+                            <span>Speed:</span>
+                            <span class="text-zinc-400">{(msg.stats.eval_count / (msg.stats.eval_duration / 1e9)).toFixed(1)} t/s</span>
+                        </div>
+                    {/if}
+                </div>
+              {/if}
+            {/if}
+          </div>
+        </div>
+      {/each}
+    </div>
+
+    <!-- Input Area -->
+    <div class="p-4 bg-zinc-900/50 border-t border-white/5">
+      <div class="relative">
+        <textarea
+          bind:value={input}
+          onkeydown={handleKeydown}
+          placeholder={settingsState.settings.assistant.enabled ? "Ask about your game..." : "Assistant is disabled..."}
+          class="w-full bg-black/20 border border-white/10 rounded-xl py-3 pl-4 pr-12 focus:outline-none focus:border-indigo-500/50 focus:ring-1 focus:ring-indigo-500/50 resize-none h-[52px] max-h-32 transition-all text-white disabled:opacity-50"
+          disabled={assistantState.isProcessing || !settingsState.settings.assistant.enabled}
+        ></textarea>
+        
+        <button
+          onclick={handleSubmit}
+          disabled={!input.trim() || assistantState.isProcessing || !settingsState.settings.assistant.enabled}
+          class="absolute right-2 top-2 p-2 bg-indigo-600 hover:bg-indigo-500 disabled:opacity-50 disabled:hover:bg-indigo-600 text-white rounded-lg transition-colors"
+        >
+          <Send size={16} />
+        </button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<style>
+  /* Markdown content styles */
+  .markdown-content :global(p) {
+    margin-bottom: 0.5rem;
+  }
+  
+  .markdown-content :global(p:last-child) {
+    margin-bottom: 0;
+  }
+  
+  .markdown-content :global(pre) {
+    background-color: rgba(0, 0, 0, 0.4);
+    border-radius: 0.5rem;
+    padding: 0.75rem;
+    overflow-x: auto;
+    margin: 0.5rem 0;
+  }
+  
+  .markdown-content :global(code) {
+    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
+    font-size: 0.85em;
+  }
+  
+  .markdown-content :global(pre code) {
+    background: none;
+    padding: 0;
+  }
+  
+  .markdown-content :global(:not(pre) > code) {
+    background-color: rgba(0, 0, 0, 0.3);
+    padding: 0.15rem 0.4rem;
+    border-radius: 0.25rem;
+  }
+  
+  .markdown-content :global(ul),
+  .markdown-content :global(ol) {
+    margin: 0.5rem 0;
+    padding-left: 1.5rem;
+  }
+  
+  .markdown-content :global(li) {
+    margin: 0.25rem 0;
+  }
+  
+  .markdown-content :global(blockquote) {
+    border-left: 3px solid rgba(99, 102, 241, 0.5);
+    padding-left: 1rem;
+    margin: 0.5rem 0;
+    color: rgba(255, 255, 255, 0.7);
+  }
+  
+  .markdown-content :global(h1),
+  .markdown-content :global(h2),
+  .markdown-content :global(h3),
+  .markdown-content :global(h4) {
+    font-weight: 600;
+    margin: 0.75rem 0 0.5rem 0;
+  }
+  
+  .markdown-content :global(h1) {
+    font-size: 1.25rem;
+  }
+  
+  .markdown-content :global(h2) {
+    font-size: 1.125rem;
+  }
+  
+  .markdown-content :global(h3) {
+    font-size: 1rem;
+  }
+  
+  .markdown-content :global(a) {
+    color: rgb(129, 140, 248);
+    text-decoration: underline;
+  }
+  
+  .markdown-content :global(a:hover) {
+    color: rgb(165, 180, 252);
+  }
+  
+  .markdown-content :global(table) {
+    border-collapse: collapse;
+    margin: 0.5rem 0;
+    width: 100%;
+  }
+  
+  .markdown-content :global(th),
+  .markdown-content :global(td) {
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    padding: 0.5rem;
+    text-align: left;
+  }
+  
+  .markdown-content :global(th) {
+    background-color: rgba(0, 0, 0, 0.3);
+    font-weight: 600;
+  }
+  
+  .markdown-content :global(hr) {
+    border: none;
+    border-top: 1px solid rgba(255, 255, 255, 0.1);
+    margin: 1rem 0;
+  }
+  
+  .markdown-content :global(img) {
+    max-width: 100%;
+    border-radius: 0.5rem;
+  }
+  
+  .markdown-content :global(strong) {
+    font-weight: 600;
+  }
+  
+  .markdown-content :global(em) {
+    font-style: italic;
+  }
+</style>