RackPeek/RackPeek.Domain/Resources/Hardware/Reports/SwitchHardwareReport.cs

using RackPeek.Domain.Resources.Hardware.Models;

namespace RackPeek.Domain.Resources.Hardware.Reports;
public record SwitchHardwareReport(
    IReadOnlyList<SwitchHardwareRow> Switches
);

public record SwitchHardwareRow(
    string Name,
    string Model,
    bool Managed,
    bool Poe,
    int TotalPorts,
    int MaxPortSpeedGb,
    string PortSummary
);
public class SwitchHardwareReportUseCase(IHardwareRepository repository)
{
    public async Task<SwitchHardwareReport> ExecuteAsync()
    {
        var hardware = await repository.GetAllAsync();
        var switches = hardware.OfType<Switch>();

        var rows = switches.Select(sw =>
        {
            var totalPorts = sw.Ports?.Sum(p => p.Count ?? 0) ?? 0;

            var maxSpeed = sw.Ports?
                .Max(p => p.Speed ?? 0) ?? 0;

            var portSummary = sw.Ports == null
                ? "Unknown"
                : string.Join(", ",
                    sw.Ports
                        .GroupBy(p => p.Speed ?? 0)
                        .OrderBy(g => g.Key)
                        .Select(g =>
                        {
                            var count = g.Sum(p => p.Count ?? 0);
                            return $"{count}×{g.Key}G";
                        }));

            return new SwitchHardwareRow(
                Name: sw.Name,
                Model: sw.Model ?? "Unknown",
                Managed: sw.Managed ?? false,
                Poe: sw.Poe ?? false,
                TotalPorts: totalPorts,
                MaxPortSpeedGb: maxSpeed,
                PortSummary: portSummary
            );
        }).ToList();

        return new SwitchHardwareReport(rows);
    }
}