public static async Task <string> GetFacebookProfileName(string accessToken)
{
var uri = GetUri("https://graph.facebook.com/v2.9/me",
("fields", "id,name"),
("access_token", accessToken));
var res = await FacebookRequest <FacebookProfile>(uri);
return(res.Name);
}
public static async Task <bool> ValidateAccessToken(string accessToken)
{
var uri = GetUri("https://graph.facebook.com/debug_token",
("input_token", accessToken),
("access_token", $"{FacebookAppId}|{FacebookAppSecret}"));
var res = await FacebookRequest <object>(uri).ConfigureAwait(false);
return((((dynamic)res)?.data)?.is_valid);
}
private static string GetOAuthCallBack(ConversationReference conversationReference, string facebookOauthCallback)
{
var uri = GetUri(facebookOauthCallback,
("userId", TokenEncoder(conversationReference.User.Id)),
("botId", TokenEncoder(conversationReference.Bot.Id)),
("conversationId", TokenEncoder(conversationReference.Conversation.Id)),
("serviceUrl", TokenEncoder(conversationReference.ServiceUrl)),
("channelId", conversationReference.ChannelId)
);
return(uri.ToString());
}
public async static Task <FacebookAcessToken> ExchangeCodeForAccessToken(ConversationReference conversationReference, string code, string facebookOauthCallback)
{
var redirectUri = GetOAuthCallBack(conversationReference, facebookOauthCallback);
var uri = GetUri("https://graph.facebook.com/v2.9/oauth/access_token",
("client_id", FacebookAppId),
("redirect_uri", redirectUri),
("client_secret", FacebookAppSecret),
("code", code)
);
return(await FacebookRequest <FacebookAcessToken>(uri));
}
public static string GetFacebookLoginURL(ConversationReference conversationReference, string facebookOauthCallback)
{
var redirectUri = GetOAuthCallBack(conversationReference, facebookOauthCallback);
var uri = GetUri("https://www.facebook.com/v2.9/dialog/oauth",
("client_id", FacebookAppId),
("redirect_uri", redirectUri),
("response_type", "code"),
("scope", "public_profile,email"),
("state", Convert.ToString(new Random().Next(9999)))
);
return(uri.ToString());
}
