package org.onetwo.boot.module.oauth2.clientdetails;

import java.util.Optional;

import javax.servlet.http.HttpServletRequest;

import org.onetwo.boot.module.oauth2.util.OAuth2Utils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.oauth2.common.OAuth2AccessToken;
import org.springframework.security.oauth2.provider.OAuth2Authentication;
import org.springframework.security.oauth2.provider.authentication.BearerTokenExtractor;
import org.springframework.security.oauth2.provider.authentication.TokenExtractor;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.util.Assert;

/**
 * 这个解释器只负责解释出clientDetail，不做任何验证检查，这些应该在网关层做
 * @author wayshall
 * <br/>
 */
public class AccessTokkenClientDetailsObtainService implements ClientDetailsObtainService, InitializingBean  {

	@Autowired
	private TokenStore tokenStore;
//	private TokenExtractor tokenExtractor = new BearerTokenExtractor();
	@Autowired(required=false)
	private TokenExtractor tokenExtractor;;
	private ClientDetailConverter<? extends ClientDetails> clientDetailConverter;

	
	@Override
	public void afterPropertiesSet() throws Exception {
		Assert.notNull(clientDetailConverter, "clientDetailConverter can not be null");
		if (tokenExtractor==null) {
			tokenExtractor = new BearerTokenExtractor();
		}
	}

	@Override
	public Optional<String> getTokenValue(HttpServletRequest request){
		return OAuth2Utils.getAccessTokenValue(tokenExtractor, request);
	}
	
	@Override
	public Optional<? extends ClientDetails> resolveAndStoreClientDetails(HttpServletRequest request) {
		Optional<String> at = getTokenValue(request);
		if(!at.isPresent()){
			return Optional.empty();
		}
		return OAuth2Utils.getOrSetClientDetails(request, ()->{
			return resolveClientDetails(at.get());
		});
	}

	/****
	 * @param accessTokenValue no Bearer prefix
	 */
	@Override
	public ClientDetails resolveClientDetails(String accessTokenValue) {
		accessTokenValue = extractHeaderToken(accessTokenValue);
		OAuth2AccessToken accessToken = tokenStore.readAccessToken(accessTokenValue);
		OAuth2Authentication authentication = tokenStore.readAuthentication(accessToken);
		return clientDetailConverter.convert(accessToken, authentication);
	}
	

	public void setClientDetailConverter(ClientDetailConverter<? extends ClientDetails> clientDetailConverter) {
		this.clientDetailConverter = clientDetailConverter;
	}

	public static String extractHeaderToken(String value) {
		if (value.toLowerCase().startsWith(OAuth2AccessToken.BEARER_TYPE.toLowerCase())) {
			String authHeaderValue = value.substring(OAuth2AccessToken.BEARER_TYPE.length()).trim();
			return authHeaderValue;
		}
		return value;
	}

}

@@ -1102,17 +1102,16 @@
 tractor;
-;
 %0A%09privat

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