Add separate STT and LLM test commands

src/services/ollama-llm.ts

@@ -0,0 +1,91 @@
+import type { AppConfig } from "../config.js";
+import type { Logger } from "../logger.js";
+
+interface OllamaChatMessage {
+  role: "system" | "user" | "assistant";
+  content: string;
+}
+
+interface OllamaChatResponse {
+  message?: {
+    content?: string;
+  };
+}
+
+const SYSTEM_PROMPT =
+  "너는 한국어로 짧고 자연스럽게 답하는 로컬 음성 비서다. 사용자의 말에 바로 답하고, 군더더기 없는 1~3문장으로 답해라.";
+
+export class OllamaLlmService {
+  private history: OllamaChatMessage[] = [];
+
+  constructor(
+    private readonly config: AppConfig,
+    private readonly logger: Logger,
+  ) {}
+
+  async warmup(): Promise<void> {
+    const reply = await this.chat(
+      [
+        { role: "system", content: SYSTEM_PROMPT },
+        { role: "user", content: "준비 상태 확인입니다. 한 단어로만 답하세요." },
+      ],
+    );
+    this.logger.info("LLM warmup finished", { model: this.config.OLLAMA_MODEL, reply });
+  }
+
+  async generateReply(userText: string): Promise<string> {
+    const messages: OllamaChatMessage[] = [
+      { role: "system", content: SYSTEM_PROMPT },
+      ...this.history,
+      { role: "user", content: userText },
+    ];
+
+    const reply = await this.chat(messages);
+
+    this.history.push({ role: "user", content: userText });
+    this.history.push({ role: "assistant", content: reply });
+    this.trimHistory();
+
+    return reply;
+  }
+
+  resetConversation(): void {
+    this.history = [];
+  }
+
+  private trimHistory(): void {
+    const maxMessages = this.config.MAX_CONVERSATION_TURNS * 2;
+    if (this.history.length <= maxMessages) {
+      return;
+    }
+    this.history = this.history.slice(-maxMessages);
+  }
+
+  private async chat(messages: OllamaChatMessage[]): Promise<string> {
+    const response = await fetch(`${this.config.OLLAMA_BASE_URL}/api/chat`, {
+      method: "POST",
+      headers: {
+        "content-type": "application/json",
+      },
+      body: JSON.stringify({
+        model: this.config.OLLAMA_MODEL,
+        messages,
+        stream: false,
+        think: false,
+        keep_alive: this.config.OLLAMA_KEEP_ALIVE,
+      }),
+    });
+
+    if (!response.ok) {
+      const body = await response.text();
+      throw new Error(`Ollama API ${response.status}: ${body}`);
+    }
+
+    const payload = (await response.json()) as OllamaChatResponse;
+    const content = payload.message?.content?.trim();
+    if (!content) {
+      throw new Error("Ollama 응답에 message.content 가 없습니다.");
+    }
+    return content;
+  }
+}