/// <summary>
/// Returns the base URL of the HydroPortal. This is required in order to properly construct REST queries on the portal.
/// </summary>
/// <param name="portalUrl">Original HydroPortal URL, e.g., https://hydroportal.crwr.utexas.edu/geoportal/catalog/main/home.page or https://hydroportal.crwr.utexas.edu/geoportal</param>
/// <returns>Base HydroPortal URL, e.g., https://hydroportal.crwr.utexas.edu/geoportal</returns>
private string GetBasePortalUrl(string portalUrl)
{
// Create a URI object from the given portal URL. This accounts for possible redirect.
Uri uri = WebOperations.GetUri(portalUrl, true);
string baseUrl = uri.ToString();
// Trim the home page fluff
int index = baseUrl.ToLower().IndexOf("geoportal/catalog");
if (index > -1)
{
baseUrl = portalUrl.Substring(0, index + 9);
}
// Trim current searches
index = baseUrl.IndexOf("geoportal/rest");
if (index > -1)
{
baseUrl = portalUrl.Substring(0, index + 9);
}
// Trim parameters
index = baseUrl.IndexOf("?");
if (index > -1)
{
baseUrl = portalUrl.Substring(0, index);
}
// Make sure this is still a valid URL
if (!WebOperations.IsUrlValid(baseUrl, false))
{
baseUrl = uri.ToString(); // Revert back to the URI that worked
}
// Remove trailing backslash
index = baseUrl.LastIndexOf("/");
if (index == (baseUrl.Length - 1))
{
baseUrl = baseUrl.Substring(0, baseUrl.Length - 1);
}
return(baseUrl);
}
