Re-use webui fastapi application rather than requiring one or the other, not both.

modules/api/api.py

@@ -2,15 +2,13 @@ from modules.api.processing import StableDiffusionProcessingAPI
 from modules.processing import StableDiffusionProcessingTxt2Img, process_images
 import modules.shared as shared
 import uvicorn
-from fastapi import FastAPI, Body, APIRouter
+from fastapi import Body, APIRouter
 from fastapi.responses import JSONResponse
 from pydantic import BaseModel, Field, Json
 import json
 import io
 import base64
 
-app = FastAPI()
-
 class TextToImageResponse(BaseModel):
     images: list[str] = Field(default=None, title="Image", description="The generated image in base64 format.")
     parameters: Json
@@ -18,7 +16,7 @@ class TextToImageResponse(BaseModel):
 
 
 class Api:
-    def __init__(self):
+    def __init__(self, app):
         self.router = APIRouter()
         app.add_api_route("/v1/txt2img", self.text2imgapi, methods=["POST"])
 

webui.py

@@ -96,14 +96,11 @@ def initialize():
 
 
 def api():
-    initialize()
-
     from modules.api.api import Api
-    api = Api()
-    api.launch(server_name="0.0.0.0" if cmd_opts.listen else "127.0.0.1", port=cmd_opts.port if cmd_opts.port else 7861)
+    api = Api(app)
 
 
-def webui():
+def webui(launch_api=False):
     initialize()
 
     while 1:
@@ -122,6 +119,9 @@ def webui():
 
         app.add_middleware(GZipMiddleware, minimum_size=1000)
 
+        if (launch_api):
+            api(app)
+
         while 1:
             time.sleep(0.5)
             if getattr(demo, 'do_restart', False):
@@ -143,6 +143,6 @@ def webui():
 
 if __name__ == "__main__":
     if cmd_opts.api:
-        api()
+        webui(True)
     else:
-        webui()
+        webui(False)