Initial implementation of Stable Diffusion

- Needs to add attachment to discord
- Needs to delete image afterward
- Needs to calculate token usage

controllers/stabilityController.js

@@ -0,0 +1,60 @@
+// Debug
+const { DebugBuilder } = require("../utilities/debugBuilder");
+const log = new DebugBuilder("server", "stabilityController");
+
+// Modules
+const Generation = require("./stabilityAi/generation_pb");
+const { GenerationServiceClient } = require("./stabilityAi/generation_pb_service");
+
+const { grpc } = require("@improbable-eng/grpc-web");
+const GRPCWeb = grpc;
+
+const { NodeHttpTransport } = require("@improbable-eng/grpc-web-node-http-transport");
+const fs = require("fs");
+const {
+  buildGenerationRequest,
+  executeGenerationRequest,
+  onGenerationComplete,
+} = require("../utilities/stabilityHelpers");
+
+// Set Global Color for this controller
+exports.STABILITY_COLOR = 0xeb34b7;
+
+// This is a NodeJS-specific requirement - browsers implementations should omit this line.
+GRPCWeb.setDefaultTransport(NodeHttpTransport());
+
+// Authenticate using your API key, don't commit your key to a public repository!
+const metadata = new GRPCWeb.Metadata();
+metadata.set("Authorization", "Bearer " + process.env.STABILITY_API_KEY);
+
+// Create a generation client to use with all future requests
+const stabilityClient = new GenerationServiceClient("https://grpc.stability.ai", {});
+
+exports.submitImageGenerationTransaction = async () => {
+    const request = buildGenerationRequest("stable-diffusion-512-v2-1", {
+        type: "text-to-image",
+        prompts: [
+          {
+            text: "A dream of a distant galaxy, by Caspar David Friedrich, matte painting trending on artstation HQ",
+          },
+        ],
+        width: 512,
+        height: 512,
+        samples: 1,
+        cfgScale: 13,
+        steps: 10,
+        sampler: Generation.DiffusionSampler.SAMPLER_K_DPMPP_2M,
+    });
+    log.DEBUG("Stability request: ", request, metadata, stabilityClient);
+    
+    executeGenerationRequest(stabilityClient, request, metadata)
+      .then((response) => {
+        log.DEBUG("Stability Generation response: ". response)
+        onGenerationComplete(response);
+        return;
+      })      
+      .catch((error) => {
+        log.ERROR("Failed to make text-to-image request:", error);
+      }
+    );
+}