import { BrowserWindow } from 'electron';
import { gatewayManager } from '@electron/gateway/manager';
import { providerApiService } from '@electron/service/provider-api-service';
import type { HostApiContext } from './context';
import type { HostApiRequest } from './route-utils';
import { normalizeRequest } from './route-utils';
import { handleFileRoutes } from './routes/files';
import { handleGatewayRoutes } from './routes/gateway';
import { handleModelRoutes } from './routes/models';
import { handleProviderRoutes } from './routes/providers';
import { handleSessionRoutes } from './routes/sessions';

type RouteHandler = (
  request: ReturnType<typeof normalizeRequest>,
  ctx: HostApiContext,
) => Promise<any | null>;

const routeHandlers: RouteHandler[] = [
  handleProviderRoutes,
  handleModelRoutes,
  handleGatewayRoutes,
  handleFileRoutes,
  handleSessionRoutes,
];

function createContext(): HostApiContext {
  return {
    gatewayManager,
    providerApiService,
    mainWindow: BrowserWindow.getAllWindows()[0] ?? null,
  };
}

export async function dispatchLocalHostApi(request: HostApiRequest) {
  const normalized = normalizeRequest(request);
  const ctx = createContext();

  for (const handler of routeHandlers) {
    const result = await handler(normalized, ctx);
    if (result) {
      return result;
    }
  }

  return null;
}