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;
using Newtonsoft.Json;

namespace JNPF.Extras.CollectiveOAuth.Request;

public class MicrosoftAuthRequest : DefaultAuthRequest
{
    public MicrosoftAuthRequest(ClientConfig config) : base(config, new MicrosoftAuthSource())
    {
    }

    public MicrosoftAuthRequest(ClientConfig config, IAuthStateCache authStateCache)
        : base(config, new MicrosoftAuthSource(), authStateCache)
    {
    }
    protected override AuthToken getAccessToken(AuthCallback authCallback)
    {
        return getToken(accessTokenUrl(authCallback.code));
    }

    /**
     * 获取token，适用于获取access_token和刷新token
     *
     * @param accessTokenUrl 实际请求token的地址
     * @return token对象
     */
    private AuthToken getToken(string accessTokenUrl)
    {
        var reqParams = new Dictionary<string, object>
        {
            { "Host", "https://login.microsoftonline.com" },
            { "Content-Type", "application/x-www-form-urlencoded" },
        };

        var reqParamDic = GlobalAuthUtil.parseUrlObject(accessTokenUrl);
        var response = HttpUtils.RequestPost(accessTokenUrl, JsonConvert.SerializeObject(reqParamDic), reqParams);
        var accessTokenObject = response.parseObject();

        this.checkResponse(accessTokenObject);

        var authToken = new AuthToken();
        authToken.accessToken = accessTokenObject.getString("access_token");
        authToken.tokenType = accessTokenObject.getString("token_type");
        authToken.expireIn = accessTokenObject.getInt32("expires_in");
        authToken.refreshToken = accessTokenObject.getString("refresh_token");
        authToken.scope = accessTokenObject.getString("scope");

        return authToken;
    }


    protected override AuthUser getUserInfo(AuthToken authToken)
    {
        var token = authToken.accessToken;
        var tokenType = authToken.tokenType;
        var jwt = tokenType + " " + token;
        var reqParams = new Dictionary<string, object>
        {
            { "Authorization", jwt },
        };

        var response = HttpUtils.RequestGet(userInfoUrl(authToken), reqParams);
        var userObj = response.parseObject();
        this.checkResponse(userObj);

        var authUser = new AuthUser();
        authUser.uuid = userObj.getString("id");
        authUser.username = userObj.getString("userPrincipalName");
        authUser.nickname = userObj.getString("displayName");
        authUser.location = userObj.getString("officeLocation");
        authUser.email = userObj.getString("mail");
        authUser.gender = AuthUserGender.UNKNOWN;

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

    /**
     * 刷新access token （续期）
     *
     * @param authToken 登录成功后返回的Token信息
     * @return AuthResponse
     */
    public override AuthResponse refresh(AuthToken authToken)
    {
        var token = getToken(refreshTokenUrl(authToken.refreshToken));
        return new AuthResponse(AuthResponseStatus.SUCCESS.GetCode(), AuthResponseStatus.SUCCESS.GetDesc(), token);
    }

    /**
     * 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("response_type", "code")
            .queryParam("client_id", config.clientId)
            .queryParam("redirect_uri", config.redirectUri)
            .queryParam("response_mode", "query")
            .queryParam("scope", "offline_access%20" + (config.scope.IsNullOrWhiteSpace() ? "user.read%20mail.read" : config.scope))
            .queryParam("state", getRealState(state))
            .build();
    }

    /**
     * 返回获取accessToken的url
     *
     * @param code 授权code
     * @return 返回获取accessToken的url
     */
    protected override string accessTokenUrl(string code)
    {
        return UrlBuilder.fromBaseUrl(source.accessToken())
            .queryParam("code", code)
            .queryParam("client_id", config.clientId)
            .queryParam("client_secret", config.clientSecret)
            .queryParam("grant_type", "authorization_code")
            .queryParam("scope", config.scope.IsNullOrWhiteSpace() ? "user.read%20mail.read" : config.scope)
            .queryParam("redirect_uri", config.redirectUri)
            .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()).build();
    }

    /**
     * 返回获取accessToken的url
     *
     * @param refreshToken 用户授权后的token
     * @return 返回获取accessToken的url
     */
    protected override string refreshTokenUrl(string refreshToken)
    {
        return UrlBuilder.fromBaseUrl(source.refresh())
            .queryParam("client_id", config.clientId)
            .queryParam("client_secret", config.clientSecret)
            .queryParam("refresh_token", refreshToken)
            .queryParam("grant_type", "refresh_token")
            .queryParam("scope", config.scope.IsNullOrWhiteSpace() ? "user.read%20mail.read" : config.scope)
            .queryParam("redirect_uri", config.redirectUri)
            .build();
    }


    /**
     * 检查响应内容是否正确
     *
     * @param object 请求响应内容
     */
    private void checkResponse(Dictionary<string, object> dic)
    {
        if (dic.ContainsKey("error"))
        {
            throw new Exception(dic.getString("error_description"));
        }
    }
}