import { FactoryProvider } from '@nestjs/common';
import { ConfigurationService } from 'src/modules/config/config.service';

import * as session from 'express-session';
import * as connectRedis from 'connect-redis';
import * as redis from 'redis';
import { RequestHandler } from 'express';

export const sessionProviders = [
  {
    provide: 'SESSION_STORE',
    useFactory: async (
      config: ConfigurationService,
    ): Promise<connectRedis.RedisStore> => {
      const RedisStore = connectRedis(session);
      const redisClient = redis.createClient({
        url:
          process.env.REDIS_URL ||
          config.get<string>('app.redis_url') ||
          'redis://localhost:6379',
        legacyMode: true,
      });

      await redisClient.connect();

      return new RedisStore({ client: redisClient });
    },
    inject: [ConfigurationService],
  } as FactoryProvider<connectRedis.RedisStore>,
  {
    provide: 'SESSION',
    useFactory: (
      store: connectRedis.RedisStore,
      config: ConfigurationService,
    ) =>
      session({
        name: config.get<string>('app.session_name'),
        secret: config.get<string>('app.session_secret'),
        resave: true,
        saveUninitialized: false,
        store,
        cookie: {
          sameSite: 'lax',
          secure: process.env.NODE_ENV === 'production',
        },
      }),
    inject: ['SESSION_STORE', ConfigurationService],
  } as FactoryProvider<RequestHandler>,
];