using JNPF.Extras.CollectiveOAuth.Cache;
using JNPF.Extras.CollectiveOAuth.Config;
using JNPF.Extras.CollectiveOAuth.Enums;
using JNPF.Extras.CollectiveOAuth.Models;
using JNPF.Extras.CollectiveOAuth.Utils;

namespace JNPF.Extras.CollectiveOAuth.Request;

public class KujialeAuthRequest : DefaultAuthRequest
{
    public KujialeAuthRequest(ClientConfig config) : base(config, new KujialeAuthSource())
    {
    }

    public KujialeAuthRequest(ClientConfig config, IAuthStateCache authStateCache)
        : base(config, new KujialeAuthSource(), authStateCache)
    {
    }

    /**
      * 返回带{@code state}参数的授权url，授权回调时会带上这个{@code state}
      * 默认只向用户请求用户信息授权
      *
      * @param state state 验证授权流程的参数，可以防止csrf
      * @return 返回授权地址
      * @since 1.11.0
      */
    public override string authorize(string state)
    {
        var urlBuilder = UrlBuilder.fromBaseUrl(source.authorize())
           .queryParam("response_type", "code")
           .queryParam("client_id", config.clientId)
           .queryParam("redirect_uri", config.redirectUri)
           .queryParam("state", getRealState(state))
           .queryParam("scope", config.scope.IsNullOrWhiteSpace() ? "get_user_info" : config.scope)
           .build();
        return urlBuilder;
    }

    protected override AuthToken getAccessToken(AuthCallback authCallback)
    {
        var response = doPostAuthorizationCode(authCallback.code);
        return getAuthToken(response);
    }

    private AuthToken getAuthToken(string response)
    {
        var accessTokenObject = response.parseObject();
        this.checkResponse(accessTokenObject);

        var resultObject = accessTokenObject.getJSONObject("d");

        var authToken = new AuthToken();
        authToken.accessToken = resultObject.getString("accessToken");
        authToken.refreshToken = resultObject.getString("refreshToken");
        authToken.expireIn = resultObject.getInt32("expiresIn");
        return authToken;
    }


    protected override AuthUser getUserInfo(AuthToken authToken)
    {
        string openId = this.getOpenId(authToken);

        var userInfoUrl = UrlBuilder.fromBaseUrl(source.userInfo())
            .queryParam("access_token", authToken.accessToken)
            .queryParam("open_id", openId)
            .build();

        var response = HttpUtils.RequestGet(userInfoUrl);
        var resObj = response.parseObject();
        this.checkResponse(resObj);

        var userObj = resObj.getJSONObject("d");

        var authUser = new AuthUser();
        authUser.uuid = userObj.getString("openId");
        authUser.username = userObj.getString("userName");
        authUser.nickname = userObj.getString("userName");
        authUser.avatar = userObj.getString("avatar");
        authUser.gender = AuthUserGender.UNKNOWN;

        authUser.token = authToken;
        authUser.source = source.getName();
        authUser.originalUser = resObj;
        authUser.originalUserStr = response;
        return authUser;
    }

    /**
     * 获取酷家乐的openId，此id在当前client范围内可以唯一识别授权用户
     *
     * @param authToken 通过{@link AuthKujialeRequest#getAccessToken(AuthCallback)}获取到的{@code authToken}
     * @return openId
     */
    private string getOpenId(AuthToken authToken)
    {
        var openIdUrl = UrlBuilder.fromBaseUrl("https://oauth.kujiale.com/oauth2/auth/user")
            .queryParam("access_token", authToken.accessToken)
            .build();
        var response = HttpUtils.RequestGet(openIdUrl);
        var accessTokenObject = response.parseObject();
        this.checkResponse(accessTokenObject);
        return accessTokenObject.getString("d");
    }

    public override AuthResponse refresh(AuthToken authToken)
    {
        var refreshUrl = refreshTokenUrl(authToken.refreshToken);
        var response = HttpUtils.RequestPost(refreshUrl);
        return new AuthResponse(AuthResponseStatus.SUCCESS.GetCode(), AuthResponseStatus.SUCCESS.GetDesc(), getAuthToken(response));
    }

    /**
   * 校验请求结果
   *
   * @param response 请求结果
   * @return 如果请求结果正常，则返回Exception
   */
    private void checkResponse(Dictionary<string, object> dic)
    {
        if (dic.Count == 0)
        {
            throw new Exception("请求所返回的数据为空!");
        }

        if (!"0".Equals(dic.getString("c")))
        {
            throw new Exception($"{dic.getString("m")}");
        }
    }
}