#if WINDOWS
using MeetingAssistant.Calendar;

namespace MeetingAssistant.MeetingNotes;

internal static class OutlookClassicAppointmentMetadata
{
    public static MeetingMetadata CreateMetadata(object appointment, DateTime end)
    {
        return CalendarAppointmentMetadata.Create(
            Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Subject")),
            ReadAttendees(appointment),
            Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Body")),
            OutlookClassicCom.ToLocalOffset(end));
    }

    public static string ReadSubject(object appointment)
    {
        return CalendarAppointmentMetadata.ReadSubject(
            Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Subject")));
    }

    public static bool IsTeamsAppointment(object appointment)
    {
        var subject = Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Subject")) ?? "";
        var location = Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Location")) ?? "";
        var body = Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Body")) ?? "";
        return CalendarAppointmentMetadata.IsTeamsAppointment(subject, location, body);
    }

    public static string ExtractAgenda(string body)
    {
        return CalendarAppointmentMetadata.ExtractAgenda(body);
    }

    public static IReadOnlyList<string> ReadAttendees(object appointment)
    {
        var attendees = new List<string>();
        var organizer = Convert.ToString(OutlookClassicCom.GetProperty(appointment, "Organizer"));
        if (!string.IsNullOrWhiteSpace(organizer))
        {
            attendees.Add(organizer.Trim());
        }

        object? recipients = null;
        try
        {
            recipients = OutlookClassicCom.GetProperty(appointment, "Recipients");
            var count = Convert.ToInt32(OutlookClassicCom.GetProperty(recipients!, "Count"));
            for (var index = 1; index <= count; index++)
            {
                object? recipient = null;
                try
                {
                    recipient = OutlookClassicCom.Invoke(recipients!, "Item", index);
                    var formatted = FormatRecipient(recipient!);
                    if (!string.IsNullOrWhiteSpace(formatted))
                    {
                        attendees.Add(formatted);
                    }
                }
                finally
                {
                    OutlookClassicCom.ReleaseComObject(recipient);
                }
            }
        }
        finally
        {
            OutlookClassicCom.ReleaseComObject(recipients);
        }

        return NormalizeAttendees(attendees);
    }

    public static IReadOnlyList<string> NormalizeAttendees(IEnumerable<string> attendees)
    {
        return CalendarAppointmentMetadata.NormalizeAttendees(attendees);
    }

    private static string FormatRecipient(object recipient)
    {
        var name = Convert.ToString(OutlookClassicCom.GetProperty(recipient, "Name"))?.Trim() ?? "";
        var email = Convert.ToString(OutlookClassicCom.GetProperty(recipient, "Address"))?.Trim() ?? "";
        if (string.IsNullOrWhiteSpace(name))
        {
            return email;
        }

        if (string.IsNullOrWhiteSpace(email) ||
            email.Contains('/'))
        {
            return name;
        }

        return $"{name} <{email}>";
    }
}
#endif