using Ophelias.Models;


namespace Ophelias.Reporting
{
    internal static class Operational
    {
        /*
         * This class is a collection of operational reporting operations.
         * The purpose of it is to write out information regarding the daily
         * arrivals and daily occupancy using fstring to print out the reports.
         * The output is not fully formatted as there is no way to accurately pad
         * the strings. If we knew the longest possible string, which we do not
         * because names can be any length, we chose to use tabs for the initial
         * spacing.
         */
        internal static void FetchDailyArriavals(List<Reservation> reservations)
        {
            /*
             * This class gets writes the daily arrivals in the reservation list.
             * If there is a room number that is specified with an individual,
             * their room number is listed. Otherwise it is marked as N/A since
             * they have not checked in yet to recieve their room.
             */
            List<string> entries = new();
            foreach (Reservation r in reservations)
            {
                string roominfo;
                if (!r.RoomNum.HasValue)
                {
                    roominfo = "N/A";
                }
                else
                {

                    roominfo = r.RoomNum.Value.ToString();
                }

                entries.Add($"{r.Guest.LastName}, {r.Guest.FirstName}\t{r.Type}\t{roominfo}\t{r.EndDate.Date.ToString("yyyy-MM-dd")}");
            }
            string report = $"DAILY ARRIVAL REPORT - GENERATED ON {DateTime.Now.Date.ToString("yyyy-MM-dd")}\n" +
                $"Last, First\tType\tRoom\tDeparture\n" +
                $"{string.Join("\n", entries)}\n\n"; // Format the list joined into the string

            File.AppendAllText(Path.GetFullPath("DailyArrivals.txt"), report); // Write to file
        }
        internal static void FetchDailyOccupancy(List<(DateTime, int, string, string)> cop, List<int> pop)
        {
            /*
             * Fetch Daily Occupancy gets the occupancy for that day. If the guest is leaving
             * the same day, an * will preceed their name. If the room they are in was occupied
             * the day before, a last occupied date is included.
             */
            List<string> entries = new();
            foreach (var c in cop)
            {
                /*
                 * Iterates over each item to determine whether a date and *
                 * needs to be set based on the conditions detailed in the
                 * docstring.
                 */
                string lastOccupied;
                string sameDayLeave = "";
                if (pop.Contains(c.Item2))
                {
                    lastOccupied = DateTime.Now.AddDays(-1).ToString("yyyy-MM-dd"); 
                } else
                {
                    lastOccupied = "N/A";
                }

                if(DateTime.Now.Date == c.Item1.Date)
                {
                    sameDayLeave = "*";
                }
                entries.Add($"{c.Item2}\t{lastOccupied}\t{sameDayLeave}{c.Item3}, {c.Item4}");
            }
            string report = $"DAILY OCCUPANCY REPORT - GENERATED ON {DateTime.Now.Date.ToString("yyyy-MM-dd")}\n" +
                $"An * means that the guest is leaving the same day.\n" +
                $"Room #\tPrev. Occupied\tCurrent Occupant\n" +
                $"{string.Join("\n", entries)}\n\n"; // Format the list joined into the string

            File.AppendAllText(Path.GetFullPath("DailyOccupancy.txt"), report); // Write to file
        }

    }
}