private static async Task <PermissionToken> GetPermissionAsync(string userId, CosmosDBRepository repo, string permissionId, PermissionMode permissionMode = PermissionMode.Read)
{
Permission permission = null;
User user = await CreateUserIfNotExistAsync(userId, repo);
string userStr = userId;
string[] userArr = userStr.Split('@');
userStr = userArr[0];
try
{
permission = await repo.GetPermissionAsync(user, permissionId, new RequestOptions { ResourceTokenExpirySeconds = (int)TOKEN_EXPIRY.TotalSeconds });
// System.Diagnostics.Debug.WriteLine($"Retreived Existing Permission. {permission.Id}");
}
catch (DocumentClientException e)
{
if (e.StatusCode == System.Net.HttpStatusCode.NotFound)
{
DocumentCollection collection = await repo.GetDocumentCollectionAsync();
permission = new Permission
{
PermissionMode = permissionMode,
ResourceLink = collection.SelfLink,
// Permission restricts access to this partition key
ResourcePartitionKey = new PartitionKey(userStr),
// Unique per user
Id = permissionId
};
try
{
permission = await repo.UpsertPermissionAsync(user, permission, new RequestOptions { ResourceTokenExpirySeconds = (int)TOKEN_EXPIRY.TotalSeconds });
}
catch (Exception ex)
{
throw ex;
}
}
else
{
throw e;
}
}
var expires = DateTimeOffset.Now.Add(TOKEN_EXPIRY).ToUnixTimeSeconds();
return(new PermissionToken()
{
Token = permission.Token,
Expires = expires,
UserId = userId
});
}