import type { Extension, HostAPI, Manifest } from "@dispatch/kernel";
import { createOpenAICompatProvider } from "@dispatch/openai-stream";

export const manifest: Manifest = {
  id: "provider-openai-compat",
  name: "OpenAI-Compatible Provider",
  version: "0.0.0",
  apiVersion: "^0.1.0",
  dependsOn: ["auth-apikey"],
  trust: "bundled",
  activation: "eager",
  capabilities: { network: true },
  contributes: { providers: ["openai-compat"] },
};

export async function activate(host: HostAPI): Promise<void> {
  const auth = host.getAuthProvider("apikey");
  if (!auth) {
    host.logger.warn(
      "provider-openai-compat: auth-apikey extension not available. Provider not registered.",
    );
    return;
  }

  const creds = await auth.resolve();
  if (!creds) {
    host.logger.warn(
      "provider-openai-compat: no credentials resolved from auth-apikey. Provider not registered.",
    );
    return;
  }

  if (creds.type !== "api-key") {
    host.logger.warn(
      `provider-openai-compat: expected api-key credentials but got "${creds.type}". Provider not registered.`,
    );
    return;
  }

  const model = host.config.get<string>("provider.openai-compat.model") ?? "deepseek-v4-flash";

  const provider = createOpenAICompatProvider({
    credentials: creds,
    model,
    id: "openai-compat",
  });
  host.defineProvider(provider);
  host.logger.info(`provider-openai-compat: registered (model=${model})`);
}

export const extension: Extension = {
  manifest,
  activate,
};