package com.epmet.auth;

import com.alibaba.fastjson.JSON;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

import java.nio.charset.StandardCharsets;

public abstract class AuthProcessor {

    abstract Mono<Void> auth(ServerWebExchange exchange, GatewayFilterChain chain);

    protected Mono<Void> response(ServerWebExchange exchange, Object object) {
        String json = JSON.toJSONString(object);
        DataBuffer buffer = exchange.getResponse().bufferFactory().wrap(json.getBytes(StandardCharsets.UTF_8));
        exchange.getResponse().getHeaders().setContentType(MediaType.APPLICATION_JSON_UTF8);
        exchange.getResponse().setStatusCode(HttpStatus.OK);
        return exchange.getResponse().writeWith(Flux.just(buffer));
    }

}