/// <summary>
/// Loads the input file, converts to an internal model, and organises the data for efficient analysis.
/// Restricts installations to consider with an IInstallationFilter and passes the results to an ILicenseAssesor for analysis.
/// License requirements are summed for the input file and returned.
/// </summary>
/// <param name="fileName">The report file to load.</param>
/// <param name="installationFilter">The filter used to identify installations of interest.</param>
/// <returns>The summed license requirements.</returns>
public int LoadAndAnalyse(string fileName, IInstallationFilter installationFilter)
{
var installationDataCollection = _reportLoader.LoadReportData(fileName);
var installations = _reportToModelConverter.ConvertReportData(installationDataCollection);
_installationCatalog.AddInstallationsByUser(installations);
var licenseCount = _installationCatalog.CountLicensesByUser(installationFilter, _licenseAssessor);
return(licenseCount);
}
/// <summary>
/// Counts licenses that are tracked on a per-user basis.
/// Filters the installations for each user, then assesses how many licenses are required for that installation set.
/// The installs for all users are summed and returned.
/// </summary>
/// <param name="installationFilter">Filter used to isolate the installations to consider; applied to each user's installations prior to assessment.</param>
/// <param name="licenseAssessor">Assessor used to count the licenses required for each user's filtered installations.</param>
/// <returns>The sum of required licenses across all users.</returns>
public int CountLicensesByUser(IInstallationFilter installationFilter, ILicenseAssessor licenseAssessor)
{
// Walk the dictionary, considering each user individually.
var licensesRequiredTotal = 0;
foreach (var userInstallations in _indexMap.Values)
{
var considerInstallations = userInstallations.Where(installationFilter.Filter);
licensesRequiredTotal += licenseAssessor.AssessInstallationLicenses(considerInstallations);
}
return(licensesRequiredTotal);
}
