add openapi doc for genai module

Author: edkaya

genai/openapi.yaml

@@ -0,0 +1,104 @@
+openapi: 3.0.3
+info:
+  title: GenAI Module API
+  version: 1.0.0
+
+paths:
+  /genai/upload:
+    post:
+      summary: Upload a file for ingestion
+      requestBody:
+        required: true
+        content:
+          multipart/form-data:
+            schema:
+              $ref: '#/components/schemas/UploadRequest'
+      responses:
+        '200':
+          description: File processed successfully or already uploaded
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/UploadResponse'
+        '400':
+          description: No file provided
+        '500':
+          description: Server error during ingestion
+
+  /genai/generate:
+    post:
+      summary: Generate a recipe response using retrieved context and chat history
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/GenerateRequest'
+      responses:
+        '200':
+          description: AI-generated recipe response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/GenerateResponse'
+        '400':
+          description: Missing 'query' or 'messages'
+        '500':
+          description: Server error during generation
+
+components:
+  schemas:
+    UploadRequest:
+      type: object
+      properties:
+        file:
+          type: string
+          format: binary
+          description: The file to upload and ingest
+      required:
+        - file
+
+    UploadResponse:
+      type: object
+      properties:
+        message:
+          type: string
+        error:
+          type: string
+
+    GenerateRequest:
+      type: object
+      required:
+        - query
+        - messages
+      properties:
+        query:
+          type: string
+          description: The user's recipe-related query
+        messages:
+          type: array
+          description: Full conversation history
+          items:
+            $ref: '#/components/schemas/ChatMessage'
+
+    ChatMessage:
+      type: object
+      required:
+        - role
+        - content
+      properties:
+        role:
+          type: string
+          enum: [USER, ASSISTANT]
+          description: The role in the conversation
+        content:
+          type: string
+          description: The user's message content
+
+    GenerateResponse:
+      type: object
+      properties:
+        response:
+          type: string
+        error:
+          type: string