refactor: repartition server-side and client-side code

app/.server/modules/llm/providers/deepseek.ts

@@ -0,0 +1,37 @@
+import { createDeepSeek } from '@ai-sdk/deepseek';
+import type { LanguageModel } from 'ai';
+import { BaseProvider } from '~/.server/modules/llm/base-provider';
+import type { ModelInfo } from '~/.server/modules/llm/types';
+import type { IProviderSetting } from '~/types/model';
+
+export default class DeepseekProvider extends BaseProvider {
+  name = 'DeepSeek';
+  getApiKeyLink = 'https://platform.deepseek.com/apiKeys';
+
+  config = {
+    apiTokenKey: 'DEEPSEEK_API_KEY',
+    baseUrlKey: '',
+  };
+
+  staticModels: ModelInfo[] = [
+    { name: 'deepseek-coder', label: 'DeepSeek-Coder', provider: 'DeepSeek', maxTokenAllowed: 8000 },
+    { name: 'deepseek-chat', label: 'DeepSeek-Chat', provider: 'DeepSeek', maxTokenAllowed: 8000 },
+    { name: 'deepseek-reasoner', label: 'DeepSeek-Reasoner', provider: 'DeepSeek', maxTokenAllowed: 8000 },
+  ];
+
+  getModelInstance(options: { model: string; providerSettings?: Record<string, IProviderSetting> }): LanguageModel {
+    const { model, providerSettings } = options;
+
+    const { apiKey } = this.getProviderBaseUrlAndKey(providerSettings?.[this.name]);
+
+    if (!apiKey) {
+      throw new Error(`Missing API key for ${this.name} provider`);
+    }
+
+    const deepseek = createDeepSeek({
+      apiKey,
+    });
+
+    return deepseek(model);
+  }
+}