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package me.zhyd.oauth.request;

import com.alibaba.fastjson.JSONObject;
import me.zhyd.oauth.cache.AuthStateCache;
import me.zhyd.oauth.config.AuthConfig;
import me.zhyd.oauth.config.AuthDefaultSource;
import me.zhyd.oauth.enums.AuthUserGender;
import me.zhyd.oauth.enums.scope.AuthProginnScope;
import me.zhyd.oauth.exception.AuthException;
import me.zhyd.oauth.model.AuthCallback;
import me.zhyd.oauth.model.AuthToken;
import me.zhyd.oauth.model.AuthUser;
import me.zhyd.oauth.utils.AuthScopeUtils;
import me.zhyd.oauth.utils.HttpUtils;
import me.zhyd.oauth.utils.UrlBuilder;

import java.util.HashMap;
import java.util.Map;

/**
 * 程序员客栈
 *
 * @author yadong.zhang (yadong.zhang0415(a)gmail.com)
 * @since 1.16.2
 */
public class AuthProginnRequest extends AuthDefaultRequest {

    public AuthProginnRequest(AuthConfig config) {
        super(config, AuthDefaultSource.PROGINN);
    }

    public AuthProginnRequest(AuthConfig config, AuthStateCache authStateCache) {
        super(config, AuthDefaultSource.PROGINN, authStateCache);
    }

    @Override
    public AuthToken getAccessToken(AuthCallback authCallback) {
        Map params = new HashMap<>();
        params.put("code", authCallback.getCode());
        params.put("client_id", config.getClientId());
        params.put("client_secret", config.getClientSecret());
        params.put("grant_type", "authorization_code");
        params.put("redirect_uri", config.getRedirectUri());
        String response = new HttpUtils(config.getHttpConfig()).post(AuthDefaultSource.PROGINN.accessToken(), params, false).getBody();
        JSONObject accessTokenObject = JSONObject.parseObject(response);
        this.checkResponse(accessTokenObject);
        return AuthToken.builder()
            .accessToken(accessTokenObject.getString("access_token"))
            .refreshToken(accessTokenObject.getString("refresh_token"))
            .uid(accessTokenObject.getString("uid"))
            .tokenType(accessTokenObject.getString("token_type"))
            .expireIn(accessTokenObject.getIntValue("expires_in"))
            .build();
    }

    @Override
    public AuthUser getUserInfo(AuthToken authToken) {
        String userInfo = doGetUserInfo(authToken);
        JSONObject object = JSONObject.parseObject(userInfo);
        this.checkResponse(object);
        return AuthUser.builder()
            .rawUserInfo(object)
            .uuid(object.getString("uid"))
            .username(object.getString("nickname"))
            .nickname(object.getString("nickname"))
            .avatar(object.getString("avatar"))
            .email(object.getString("email"))
            .gender(AuthUserGender.UNKNOWN)
            .token(authToken)
            .source(source.toString())
            .build();
    }

    /**
     * 检查响应内容是否正确
     *
     * @param object 请求响应内容
     */
    private void checkResponse(JSONObject object) {
        if (object.containsKey("error")) {
            throw new AuthException(object.getString("error_description"));
        }
    }

    /**
     * 返回带{@code state}参数的授权url，授权回调时会带上这个{@code state}
     *
     * @param state state 验证授权流程的参数，可以防止csrf
     * @return 返回授权地址
     */
    @Override
    public String authorize(String state) {
        return UrlBuilder.fromBaseUrl(super.authorize(state))
            .queryParam("scope", this.getScopes(" ", true, AuthScopeUtils.getDefaultScopes(AuthProginnScope.values())))
            .build();
    }
}