package com.aida.seller.common.context;

import com.aida.seller.common.exception.UnauthorizedException;
import com.aida.seller.model.vo.AuthPrincipalVo;

public class UserContext {
    private static final ThreadLocal<AuthPrincipalVo> userHolder = new ThreadLocal<>();
    private static final ThreadLocal<Boolean> optionalAuth = ThreadLocal.withInitial(() -> false);

    public static void setUserHolder(AuthPrincipalVo authPrincipalVo) {
        userHolder.set(authPrincipalVo);
    }

    public static void setOptionalAuth(boolean value) {
        optionalAuth.set(value);
    }

    public static AuthPrincipalVo getUserHolder() {
        AuthPrincipalVo holder = userHolder.get();
        if (holder == null) {
            if (optionalAuth.get()) {
                return null;
            }
            throw new UnauthorizedException("Gateway token verification failed");
        }
        if (!"AIDA".equals(holder.getSource())) {
            throw new UnauthorizedException("Gateway token verification failed");
        }
        return holder;
    }

    public static void delete() {
        userHolder.remove();
        optionalAuth.remove();
    }

    public static Long getUserId() {
        return getUserHolder() == null ? null : getUserHolder().getId();
    }

    //买家端请求需要调用此方法获取买家id
    public static Long getBuyerId() {
        AuthPrincipalVo holder = userHolder.get();
        if (holder == null) {
            if (optionalAuth.get()) {
                return null;
            }
            throw new UnauthorizedException("Gateway token verification failed");
        }
        if (!"BUYER".equals(holder.getSource())) {
            throw new UnauthorizedException("Gateway token verification failed");
        }
        return holder.getId();
    }

    public static Long getBuyerIdSafely() {
        AuthPrincipalVo holder = userHolder.get();
        if (holder == null) {
            return null;
        }
        if (!"BUYER".equals(holder.getSource())) {
            return null;
        }
        return holder.getId();
    }
}