/// <summary>
/// Verify if the request is valid, then returns LINE Webhook events from the request
/// </summary>
/// <param name="request">HttpRequestMessage</param>
/// <param name="channelSecret">ChannelSecret</param>
/// <param name="botUserId">BotUserId</param>
/// <returns>List of WebhookEvent</returns>
public static async Task <IEnumerable <WebhookEvent> > GetWebhookEventsAsync(this HttpRequestMessage request, string channelSecret, string botUserId = null)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (channelSecret == null)
{
throw new ArgumentNullException(nameof(channelSecret));
}
var content = await request.Content.ReadAsStringAsync();
var xLineSignature = request.Headers.GetValues("X-Line-Signature").FirstOrDefault();
if (string.IsNullOrEmpty(xLineSignature) || !VerifySignature(channelSecret, xLineSignature, content))
{
throw new InvalidSignatureException("Signature validation faild.");
}
dynamic json = JsonConvert.DeserializeObject(content);
if (!string.IsNullOrEmpty(botUserId))
{
if (botUserId != (string)json.destination)
{
throw new UserIdMismatchException("Bot user ID does not match.");
}
}
return(WebhookEventParser.ParseEvents(json.events));
}
/// <summary>
/// Verify if the request is valid, then returns LINE Webhook events from the request
/// </summary>
/// <param name="xLineSignature"></param>
/// <param name="requestBody"></param>
/// <param name="channelSecret"></param>
/// <param name="botUserId"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="InvalidSignatureException"></exception>
/// <exception cref="UserIdMismatchException"></exception>
public static IEnumerable <WebhookEvent> GetWebhookEventsAsync(string xLineSignature, string requestBody, string channelSecret, string botUserId = null)
{
if (string.IsNullOrEmpty(xLineSignature))
{
throw new ArgumentNullException(nameof(xLineSignature));
}
if (string.IsNullOrEmpty(requestBody))
{
throw new ArgumentNullException(nameof(requestBody));
}
if (string.IsNullOrEmpty(channelSecret))
{
throw new ArgumentNullException(nameof(channelSecret));
}
if (!VerifySignature(channelSecret, xLineSignature, requestBody))
{
throw new InvalidSignatureException("Signature validation faild.");
}
dynamic json = JsonConvert.DeserializeObject(requestBody);
if (!string.IsNullOrEmpty(botUserId))
{
if (botUserId != (string)json.destination)
{
throw new UserIdMismatchException("Bot user ID does not match.");
}
}
return(WebhookEventParser.ParseEvents(json.events));
}