import * as env from 'env-var';
import * as properUrlJoin from 'proper-url-join';
const urlJoin = properUrlJoin as unknown as properUrlJoin.default;

const NODE_ENV = env.get('NODE_ENV').default("development").asString();
const isProduction = NODE_ENV === 'production';

const envs = {
	NODE_ENV,
	// port of the server
	PORT: env.get('PORT').default('3000').asPortNumber(),
	// hostname of the server ('0.0.0.0' listens on all network interfaces)
	HOSTNAME: env.get('HOSTNAME').default('0.0.0.0').asString(),
	// base path
	BASE_PATH: env.get('BASE_PATH').default('/').asString(),
	// external base url
	EXTERNAL_BASE_URL: env.get('EXTERNAL_BASE_URL').asString(),

	// url of redis session store
	REDIS_URL: env.get('REDIS_URL').required(isProduction).asString() || undefined,
	// cookie secret for the session id
	SESSION_SECRET: env.get('REDIS_URL').required(isProduction).default('keyboard cat').asString(),

	// header where user info token is stored to request auth proxy
	USERINFO_HEADER: env.get('USERINFO_HEADER').asString() || undefined,
	// base url to init a logout or request user info
	AUTH_PROXY_URL: env.get('AUTH_PROXY_URL').asString() || undefined,
	// override base url to request user info
	AUTH_PROXY_USERINFO_URL: env.get('AUTH_PROXY_USERINFO_URL').asString() || undefined,
	// override base url to init a logout
	AUTH_PROXY_INIT_LOGOUT_URL: env.get('AUTH_PROXY_INIT_LOGOUT_URL').asString() || undefined,

};


export const Config = {
	...envs,
	isProduction,
	EXTERNAL_BASE_URL:
		envs.EXTERNAL_BASE_URL ||
		urlJoin(`http://${envs.HOSTNAME}${envs.PORT !== 80 ? `:${envs.PORT}` : ""}`, envs.BASE_PATH),
}