import { join } from 'path';
import { readFile } from 'fs/promises';
import { FactoryProvider, ValueProvider } from '@nestjs/common';

export const secretsProviders = [
  {
    provide: 'PRIVATE_PATH',
    useValue: join(process.cwd(), 'private'),
  } as ValueProvider<string>,
  {
    provide: 'JWT_PRIVATE_KEY',
    useFactory: async (path: string) => readFile(join(path, 'jwt.private.pem')),
    inject: ['PRIVATE_PATH'],
  } as FactoryProvider<Buffer>,
  {
    provide: 'JWT_PUBLIC_KEY',
    useFactory: async (path: string) => readFile(join(path, 'jwt.public.pem')),
    inject: ['PRIVATE_PATH'],
  } as FactoryProvider<Buffer>,
  {
    provide: 'JWT_JWKS',
    useFactory: async (path: string) =>
      JSON.parse(
        await readFile(join(path, 'jwks.json'), { encoding: 'utf-8' }),
      ),
    inject: ['PRIVATE_PATH'],
  } as FactoryProvider<Record<string, unknown>>,
];