using RackPeek.Domain.Persistence;

namespace RackPeek.Domain.Resources.Firewalls;

public record FirewallHardwareReport(
    IReadOnlyList<FirewallHardwareRow> Firewalls
);

public record FirewallHardwareRow(
    string Name,
    string Model,
    bool Managed,
    bool Poe,
    int TotalPorts,
    double MaxPortSpeedGb,
    string PortSummary
);

public class FirewallHardwareReportUseCase(IResourceCollection repository) : IUseCase {
    public async Task<FirewallHardwareReport> ExecuteAsync() {
        IReadOnlyList<Firewall> firewalls = await repository.GetAllOfTypeAsync<Firewall>();

        var rows = firewalls.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 FirewallHardwareRow(
                sw.Name,
                sw.Model ?? "Unknown",
                sw.Managed ?? false,
                sw.Poe ?? false,
                totalPorts,
                maxSpeed,
                portSummary
            );
        }).ToList();

        return new FirewallHardwareReport(rows);
    }
}