import type { HostApiContext } from '../context';
import type { NormalizedHostApiRequest } from '../route-utils';
import { ok } from '../route-utils';

export async function handleProviderRoutes(
  request: NormalizedHostApiRequest,
  ctx: HostApiContext,
) {
  const { pathname, method } = request;
  const parsedBody = request.body && typeof request.body === 'string'
    ? JSON.parse(request.body)
    : request.body;

  if (pathname === '/api/provider-vendors' && method === 'GET') {
    return ok(ctx.providerApiService.getVendors());
  }
  if (pathname === '/api/provider-accounts' && method === 'GET') {
    return ok(ctx.providerApiService.getAccounts());
  }
  if (pathname === '/api/providers' && method === 'GET') {
    return ok(ctx.providerApiService.getProviders());
  }
  if (pathname === '/api/provider-accounts/default' && method === 'GET') {
    return ok(ctx.providerApiService.getDefault());
  }
  if (pathname === '/api/provider-accounts' && method === 'POST') {
    return ok(ctx.providerApiService.createAccount(parsedBody || {}));
  }
  if (pathname === '/api/provider-accounts/default' && method === 'PUT') {
    const result = ctx.providerApiService.setDefault(parsedBody || {});
    return ok(result, result.success ? 200 : 400);
  }
  if (pathname.startsWith('/api/provider-accounts/') && method === 'PUT') {
    const id = decodeURIComponent(pathname.replace('/api/provider-accounts/', ''));
    const result = ctx.providerApiService.updateAccount(id, parsedBody || {});
    return ok(result, result.success ? 200 : 404);
  }
  if (pathname.startsWith('/api/provider-accounts/') && method === 'DELETE') {
    const id = decodeURIComponent(pathname.replace('/api/provider-accounts/', ''));
    return ok(ctx.providerApiService.deleteAccount(id));
  }
  if (pathname === '/api/providers/default' && method === 'PUT') {
    const result = ctx.providerApiService.setDefault({ accountId: (parsedBody as any)?.providerId });
    return ok(result, result.success ? 200 : 400);
  }
  if (pathname.startsWith('/api/providers/') && pathname.endsWith('/api-key') && method === 'GET') {
    const id = decodeURIComponent(pathname.replace('/api/providers/', '').replace('/api-key', ''));
    return ok(ctx.providerApiService.getApiKey(id));
  }
  if (pathname.startsWith('/api/providers/') && method === 'PUT') {
    const id = decodeURIComponent(pathname.replace('/api/providers/', ''));
    const result = ctx.providerApiService.updateAccount(id, parsedBody || {});
    return ok(result, result.success ? 200 : 404);
  }
  if (pathname.startsWith('/api/providers/') && method === 'DELETE') {
    const rawPath = request.path.replace('/api/providers/', '');
    const [rawId, query] = rawPath.split('?');
    const id = decodeURIComponent(rawId);
    if (query && query.includes('apiKeyOnly=1')) {
      return ok(ctx.providerApiService.deleteApiKey(id));
    }
    return ok(ctx.providerApiService.deleteAccount(id));
  }
  if (pathname === '/api/providers/validate' && method === 'POST') {
    return ok(await ctx.providerApiService.validateApiKey(parsedBody || {}));
  }
  if (pathname === '/api/usage/recent-token-history' && method === 'GET') {
    const limitRaw = request.url.searchParams.get('limit');
    const limit = limitRaw ? Number(limitRaw) : undefined;
    return ok(await ctx.providerApiService.getUsageHistory(limit));
  }

  return null;
}