feat(rfa-ai): Complete RFA Approval Refactor and AI Model Revision

2026-05-16 10:59:53 +07:00
parent 6cb3ae10ee
commit 1a162bf320
105 changed files with 5088 additions and 1083 deletions
@@ -0,0 +1,94 @@
+// File: src/modules/ai/services/ollama.service.ts
+// Change Log
+// - 2026-05-15: เพิ่ม Ollama service สำหรับ ADR-023A 2-model stack.
+
+import { Injectable, Logger } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import axios from 'axios';
+
+export interface OllamaGenerateOptions {
+  timeoutMs?: number;
+  signal?: AbortSignal;
+}
+
+/** บริการเรียก Ollama local-only บน Admin Desktop ตาม ADR-023A */
+@Injectable()
+export class OllamaService {
+  private readonly logger = new Logger(OllamaService.name);
+  private readonly ollamaUrl: string;
+  private readonly mainModel: string;
+  private readonly embedModel: string;
+  private readonly timeoutMs: number;
+
+  constructor(private readonly configService: ConfigService) {
+    this.ollamaUrl = this.configService.get<string>(
+      'OLLAMA_URL',
+      this.configService.get<string>('AI_HOST_URL', 'http://localhost:11434')
+    );
+    this.mainModel = this.configService.get<string>(
+      'OLLAMA_MODEL_MAIN',
+      'gemma4:e4b'
+    );
+    this.embedModel = this.configService.get<string>(
+      'OLLAMA_MODEL_EMBED',
+      this.configService.get<string>('OLLAMA_EMBED_MODEL', 'nomic-embed-text')
+    );
+    this.timeoutMs = this.configService.get<number>('AI_TIMEOUT_MS', 30000);
+  }
+
+  /** สร้างข้อความตอบกลับจาก gemma4:e4b หรือค่า ENV ที่กำหนด */
+  async generate(
+    prompt: string,
+    options: OllamaGenerateOptions = {}
+  ): Promise<string> {
+    try {
+      const response = await axios.post<{ response: string }>(
+        `${this.ollamaUrl}/api/generate`,
+        {
+          model: this.mainModel,
+          prompt,
+          stream: false,
+        },
+        {
+          timeout: options.timeoutMs ?? this.timeoutMs,
+          signal: options.signal,
+        }
+      );
+      return response.data.response ?? '';
+    } catch (err) {
+      this.logger.error(
+        'Ollama generate failed',
+        err instanceof Error ? err.stack : String(err)
+      );
+      throw err;
+    }
+  }
+
+  /** สร้าง embedding ด้วย nomic-embed-text หรือค่า ENV ที่กำหนด */
+  async generateEmbedding(text: string): Promise<number[]> {
+    try {
+      const response = await axios.post<{ embedding: number[] }>(
+        `${this.ollamaUrl}/api/embeddings`,
+        { model: this.embedModel, prompt: text },
+        { timeout: this.timeoutMs }
+      );
+      return response.data.embedding;
+    } catch (err) {
+      this.logger.error(
+        'Ollama embedding failed',
+        err instanceof Error ? err.stack : String(err)
+      );
+      throw err;
+    }
+  }
+
+  /** คืนชื่อ main model สำหรับ audit log */
+  getMainModelName(): string {
+    return this.mainModel;
+  }
+
+  /** คืนชื่อ embedding model สำหรับ audit log */
+  getEmbeddingModelName(): string {
+    return this.embedModel;
+  }
+}