refactor: extract provider logic into modular registry

Each AI provider now has its own module implementing a ProviderModule interface with createGateway, getAuthHeaders, and fetchModels methods. This replaces the monolithic switch statements in ai-provider.ts and models.post.ts with a clean registry pattern.
2026-04-27 12:04:49 -05:00
parent 6ca4de4cab
commit 1d40812f2a
21 changed files with 1221 additions and 798 deletions
@@ -0,0 +1,72 @@
+import { createLongcat } from 'longcat-ai-sdk-provider';
+import { GatewayFetchError } from '~~/server/utils/ai-provider';
+import { Err, Ok } from '~~/types/result';
+import type { ProviderModule } from '.';
+
+export default {
+    id: 'longcat',
+    baseUrl: 'https://api.longcat.chat/openai/v1',
+    modelsEndpoint: null,
+
+    createGateway({ apiKey, baseURL }) {
+        if (apiKey === undefined) {
+            return Err(GatewayFetchError.NoProviderApiKey);
+        }
+
+        return Ok({
+            gateway: createLongcat({ apiKey, baseURL }),
+            streamTransformer: undefined,
+            textTransformer: undefined,
+        });
+    },
+
+    getAuthHeaders(apiKey) {
+        return apiKey ? { Authorization: `Bearer ${apiKey}` } : {};
+    },
+
+    async fetchModels() {
+        // longcat doesn't have a model list endpoint so we hardcode them
+        return [
+            {
+                id: "LongCat-Flash-Chat",
+                name: "LongCat Flash Chat",
+                attributes: {
+                    inputModalities: ['text'],
+                    outputModalities: ['text'],
+                    capabilities: ['tools'],
+                    contextWindow: 256_000,
+                }
+            },
+            {
+                id: "LongCat-Flash-Thinking-2601",
+                name: "LongCat Flash Thinking (2601)",
+                attributes: {
+                    inputModalities: ['text'],
+                    outputModalities: ['text'],
+                    capabilities: ['reasoning', 'tools'],
+                    contextWindow: 256_000,
+                }
+            },
+            {
+                id: "LongCat-Flash-Omni-2603",
+                name: "LongCat Flash Omni",
+                attributes: {
+                    inputModalities: ['text', 'image', 'audio', 'video'],
+                    outputModalities: ['text', 'audio'],
+                    capabilities: ['tools'],
+                    contextWindow: 256_000,
+                }
+            },
+            {
+                id: "LongCat-Flash-Lite",
+                name: "LongCat Flash Lite",
+                attributes: {
+                    inputModalities: ['text'],
+                    outputModalities: ['text'],
+                    capabilities: ['tools'],
+                    contextWindow: 320_000,
+                }
+            }
+        ];
+    },
+} satisfies ProviderModule;