import { PredefinedEnvironmentVariables } from "@types";
import dotenv, { config } from "dotenv";
import envVarInterface, { ExtenderTypeOptional, Extensions, IEnv, IOptionalVariable } from "env-var";
config()
// Their interface is really bad so I moved it to the side
type EnvInterface<T> = IEnv<IOptionalVariable<Extensions> & ExtenderTypeOptional<Extensions>, T>;

//@LoggerManager.logInstanceMethods
export class PredefinedConfig {
	private predefinedEnvVariablesInterface: EnvInterface<PredefinedEnvironmentVariables>;
	
	constructor(
		env: Record<string, unknown> = process.env,
		envFile: Record<string, unknown> = (process.env.NODE_ENV === "dev" && dotenv.config().parsed) || {},
	) {
		this.predefinedEnvVariablesInterface = envVarInterface.from(
			Object.assign({}, envFile, env) as PredefinedEnvironmentVariables,
		);
	}

	get NODE_ENV() {
		return this.predefinedEnvVariablesInterface.get("NODE_ENV").required(true).asString();
	}

	get SERVER_PORT() {
		return this.predefinedEnvVariablesInterface.get("SERVER_PORT").default(4000).asIntPositive();
	}
	get DB_HOST() {
		return this.predefinedEnvVariablesInterface.get("DB_HOST").required(true).asString();
	}

	get DB_NAME() {
		return this.predefinedEnvVariablesInterface.get("DB_NAME").required(true).asString();
	}

	get DB_PORT() {
		return this.predefinedEnvVariablesInterface.get("DB_PORT").default(5432).asIntPositive();
	}

	get DB_USERNAME() {
		return this.predefinedEnvVariablesInterface.get("DB_USERNAME").required(true).asString();
	}

	get DB_PASSWORD() {
		return this.predefinedEnvVariablesInterface.get("DB_PASSWORD").required(true).asString();
	}

	get DB_CONNECTION_TIMEOUT_MILLIS() {
		return this.predefinedEnvVariablesInterface.get("DB_CONNECTION_TIMEOUT_MILLIS").default(0).asIntPositive();
	}

	get DB_MIN_CONNECTIONS_ALLOWED() {
		return this.predefinedEnvVariablesInterface.get("DB_MIN_CONNECTIONS_ALLOWED").default(1).asIntPositive();
	}

	get DB_MAX_CONNECTIONS_ALLOWED() {
		return this.predefinedEnvVariablesInterface.get("DB_MAX_CONNECTIONS_ALLOWED").default(1).asIntPositive();
	}

	get DB_IDLE_IN_TRANSACTION_SESSION_TIMEOUT_MILLIS() {
		return this.predefinedEnvVariablesInterface
			.get("DB_IDLE_IN_TRANSACTION_SESSION_TIMEOUT_MILLIS")
			.default(0)
			.asIntPositive();
	}

	get CACHE_HOST() {
		return this.predefinedEnvVariablesInterface.get("CACHE_HOST").required(false).asString();
	}

	get CACHE_PORT() {
		return this.predefinedEnvVariablesInterface.get("CACHE_PORT").default(6379).asIntPositive();
	}

	get CACHE_PASSWORD() {
		return this.predefinedEnvVariablesInterface.get("CACHE_PASSWORD").required(false).asString();
	}

	get CACHE_CONNECTION_TIMEOUT_MILLIS() {
		return this.predefinedEnvVariablesInterface
			.get("CACHE_CONNECTION_TIMEOUT_MILLIS")
			.default(10000)
			.asIntPositive();
	}

	get CACHE_COMMAND_TIMEOUT_MILLIS() {
		return this.predefinedEnvVariablesInterface.get("CACHE_COMMAND_TIMEOUT_MILLIS").default(10000).asIntPositive();
	}
}