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 WeChatEnterpriseAuthRequest : DefaultAuthRequest
{
    public WeChatEnterpriseAuthRequest(ClientConfig config) : base(config, new WechatEnterpriseAuthSource())
    {
    }

    public WeChatEnterpriseAuthRequest(ClientConfig config, IAuthStateCache authStateCache)
        : base(config, new WechatEnterpriseAuthSource(), authStateCache)
    {
    }

    /**
    * 微信的特殊性，此时返回的信息同时包含 openid 和 access_token
    *
    * @param authCallback 回调返回的参数
    * @return 所有信息
    */
    protected override AuthToken getAccessToken(AuthCallback authCallback)
    {
        string response = doGetAuthorizationCode(accessTokenUrl(authCallback.code));
        var jsonObj = response.parseObject();

        this.checkResponse(jsonObj);

        var authToken = new AuthToken();
        authToken.accessToken = jsonObj.getString("access_token");
        authToken.expireIn = jsonObj.getInt32("expires_in");
        authToken.code = authCallback.code;

        return authToken;
    }

    protected override AuthUser getUserInfo(AuthToken authToken)
    {
        string response = doGetUserInfo(authToken);
        var jsonObj = response.parseObject();
        this.checkResponse(jsonObj);

        // 返回 OpenId 或其他，均代表非当前企业用户，不支持
        if (!jsonObj.ContainsKey("UserId"))
        {
            throw new Exception(AuthResponseStatus.UNIDENTIFIED_PLATFORM.GetDesc());
        }
        string userId = jsonObj.getString("UserId");
        string userDetailResponse = getUserDetail(authToken.accessToken, userId);
        var userDetailObj = userDetailResponse.parseObject();
        this.checkResponse(userDetailObj);

        var authUser = new AuthUser();
        authUser.username = userDetailObj.getString("name");
        authUser.nickname = userDetailObj.getString("alias");
        authUser.avatar = userDetailObj.getString("avatar");
        authUser.location = userDetailObj.getString("address");
        authUser.email = userDetailObj.getString("email");
        authUser.uuid = userDetailObj.getString("userId");
        authUser.token = authToken;
        authUser.source = source.getName();
        authUser.gender = GlobalAuthUtil.getWechatRealGender(userDetailObj.getString("gender"));

        authUser.originalUser = userDetailObj;
        authUser.originalUserStr = response;
        return authUser;
    }

    /**
     * 校验请求结果
     *
     * @param response 请求结果
     * @return 如果请求结果正常，则返回JSONObject
     */
    private void checkResponse(Dictionary<string, object> dic)
    {
        if (dic.ContainsKey("errcode") && dic.getInt32("errcode") != 0)
        {
            throw new Exception($"errcode: {dic.getString("errcode")}, errmsg: {dic.getString("errmsg")}");
        }
    }

    /**
     * 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
     * @since 1.9.3
     */
    public override string authorize(string state)
    {
        return UrlBuilder.fromBaseUrl(source.authorize())
            .queryParam("appid", config.clientId)
            .queryParam("response_type", "code")
            .queryParam("redirect_uri", config.redirectUri)
            .queryParam("scope", config.scope.IsNullOrWhiteSpace() ? "snsapi_userinfo" : config.scope)
            .queryParam("state", getRealState(state) + "#wechat_redirect")
            .build();
    }

    /**
     * 返回获取accessToken的url
     *
     * @param code 授权码
     * @return 返回获取accessToken的url
     */
    protected override string accessTokenUrl(String code)
    {
        return UrlBuilder.fromBaseUrl(source.accessToken())
            .queryParam("corpid", config.clientId)
            .queryParam("corpsecret", config.clientSecret)
            .build();
    }

    /**
     * 返回获取userInfo的url
     *
     * @param authToken 用户授权后的token
     * @return 返回获取userInfo的url
     */
    protected override string userInfoUrl(AuthToken authToken)
    {
        return UrlBuilder.fromBaseUrl(source.userInfo())
            .queryParam("access_token", authToken.accessToken)
            .queryParam("code", authToken.code)
            .build();
    }

    /**
     * 用户详情
     *
     * @param accessToken accessToken
     * @param userId      企业内用户id
     * @return 用户详情
     */
    private string getUserDetail(string accessToken, string userId)
    {
        string userDetailUrl = UrlBuilder.fromBaseUrl("https://qyapi.weixin.qq.com/cgi-bin/user/get")
            .queryParam("access_token", accessToken)
            .queryParam("userid", userId)
            .build();
        return HttpUtils.RequestGet(userDetailUrl);
    }
}