using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TrackerLibrary.Models;

namespace TrackerLibrary.DataAccess.TextHelpers
{
    public static class TextConnectorProcessor
    {
        public static string FullFilePath(this string fileName) // PrizeModel.csv
        {
            return $"{ConfigurationManager.AppSettings["filePath"]}\\{fileName}";
        }

        public static List<string> LoadFile(this string file)
        {
            if (!File.Exists(file))
            {
                return new List<string>();
            }
            return File.ReadAllLines(file).ToList();
        }

        public static List<PrizeModel> ConvertToPrizeModels(this List<string> lines)
        {
            List<PrizeModel> output = new List<PrizeModel>();

            foreach (string line in lines)
            {
                string[] cols = line.Split(',');
                PrizeModel p = new PrizeModel();
                p.Id = int.Parse(cols[0]);
                p.PlaceNumber = int.Parse(cols[1]);
                p.PlaceName = cols[2];
                p.PrizeAmount = decimal.Parse(cols[3]);
                p.PrizePercentage = double.Parse(cols[4]);
                output.Add(p);
            }

            return output;
        }

        public static List<PersonModel> ConvertToPersonModels(this List<string> lines)
        {
            List<PersonModel> output = new List<PersonModel>();
            foreach (string line in lines)
            {
                string[] cols = line.Split(',');
                PersonModel p = new PersonModel();
                p.Id = int.Parse(cols[0]);
                p.FirstName = cols[1];
                p.LastName = cols[2];
                p.EmailAddress = cols[3];
                p.CellPhoneNumber = cols[4];
                output.Add(p);
            }
            return output;
        }

        public static List<TeamModel> ConvertToTeamModels(this List<string> lines, string peopleFileName)
        {
            // id, team name,list of ids separated by pipe
            // 3,Start Team, 1|4
            List<TeamModel> output = new List<TeamModel>();
            List<PersonModel> people = peopleFileName.FullFilePath().LoadFile().ConvertToPersonModels();

            foreach (string line in lines)
            {
                string[] cols = line.Split(',');

                TeamModel t = new TeamModel();
                t.Id = int.Parse(cols[0]);
                t.TeamName = cols[1];

                string[] personIds = cols[2].Split('|');

                foreach (string id in personIds)
                {
                    t.TeamMembers.Add(people.Where(x => x.Id == int.Parse(id)).First());
                }

                output.Add(t);

            }

            return output;
        }

        public static List<TournamentModel> ConvertToTournamentModels(
            this List<string> lines,
            string teamFileName,
            string peopleFileName,
            string prizesFileName
            )
        {
            // id = 0
            // TournamentName = 1
            // EntryFee = 2
            // EnteredTeams = 3
            // Prizes = 4
            // Rounds = 5

            // id, TournamentName, EntryFee, (id|id|id - entered teams), (id|id|id - entered prizes), (rounds - id^id^id|id^id^id|id^id^id)
            List<TournamentModel> output = new List<TournamentModel>();
            List<TeamModel> teams = teamFileName.FullFilePath().LoadFile().ConvertToTeamModels(peopleFileName);
            List<PrizeModel> prizes = prizesFileName.FullFilePath().LoadFile().ConvertToPrizeModels();
            foreach (string line in lines)
            {
                string[] cols = line.Split(',');
                TournamentModel tm = new TournamentModel();
                tm.Id = int.Parse(cols[0]);
                tm.TournamentName = cols[1];
                tm.EntryFee = decimal.Parse(cols[2]);
                string[] teamIds = cols[3].Split('|');
                foreach (string teamId in teamIds)
                {
                    tm.EnteredTeams.Add(teams.Where(x => x.Id == int.Parse(teamId)).First());
                }
                string[] prizeIds = cols[4].Split('|');
                foreach (string prizeId in prizeIds)
                {
                    tm.Prizes.Add(prizes.Where(x => x.Id == int.Parse(prizeId)).First());
                }

                // Capture rounds information

                output.Add(tm);

            }
            return output;
        }

        public static void SaveToPrizeFile(this List<PrizeModel> models, string fileName)
        {
            List<string> lines = new List<string>();

            foreach (PrizeModel p in models)
            {
                lines.Add($"{p.Id},{p.PlaceNumber},{p.PlaceName}, {p.PrizeAmount}, {p.PrizePercentage}");
            }
            File.WriteAllLines(fileName.FullFilePath(), lines);
        }

        public static void SaveToPeopleFile(this List<PersonModel> models, string fileName)
        {
            List<string> lines = new List<string>();
            foreach (PersonModel p in models)
            {
                lines.Add($"{p.Id},{p.FirstName},{p.LastName},{p.EmailAddress},{p.CellPhoneNumber}");
            }

            File.WriteAllLines(fileName.FullFilePath(), lines);

        }

        public static void SaveToTeamFile(this List<TeamModel> models, string fileName)
        {
            List<string> lines = new List<string>();
            foreach (TeamModel t in models)
            {
                lines.Add($"{t.Id},{t.TeamName},{ConvertPeopleListToString(t.TeamMembers)}");
            }

            File.WriteAllLines(fileName.FullFilePath(), lines);
        }

        public static void SaveToTournamentFile(this List<TournamentModel> models, string fileName)
        {
 
            List<string> lines = new List<string>();
            foreach (TournamentModel tm in models)
            {
                lines.Add($@"{tm.Id},
                {tm.TournamentName},
                {tm.EntryFee},
                {ConvertTeamListToString(tm.EnteredTeams)},
                {ConvertPrizeListToString(tm.Prizes)},
                {ConvertRoundListToString(tm.Rounds)}");
            }

            File.WriteAllLines(fileName.FullFilePath(), lines);
        }

        private static string ConvertRoundListToString(List<List<Models.MatchupModel>> rounds)
        {
            // (rounds - id^id^id|id^id^id|id^id^id)
            string output = "";
            if (rounds.Count == 0)
            {
                return "";
            }
            foreach (List<MatchupModel> r in rounds)
            {
                output += $"{ConvertMatchupListToString(r)}|";
            }

            output = output.Substring(0, output.Length - 1);
            return output;
        }

        private static string ConvertMatchupListToString(List<MatchupModel> matchups)
        {
            string output = "";
            if (matchups.Count == 0)
            {
                return "";
            }
            foreach (MatchupModel p in matchups)
            {
                output += $"{p.Id}^";
            }

            output = output.Substring(0, output.Length - 1);
            return output;
        }

        private static string ConvertPrizeListToString(List<PrizeModel> prizes)
        {
            string output = "";
            if (prizes.Count == 0)
            {
                return "";
            }
            foreach (PrizeModel p in prizes)
            {
                output += $"{p.Id}|";
            }

            output = output.Substring(0, output.Length - 1);
            return output;
        }

        private static string ConvertTeamListToString(List<TeamModel> teams)
        {
            string output = "";
            if (teams.Count == 0)
            {
                return "";
            }
            foreach (TeamModel t in teams)
            {
                output += $"{t.Id}|";
            }

            output = output.Substring(0, output.Length - 1);
            return output;
        }

        private static string ConvertPeopleListToString(List<PersonModel> people)
        {
            string output = "";
            if (people.Count == 0)
            {
                return "";
            }
            foreach (PersonModel p in people)
            {
                output += $"{p.Id}|";
            }

            output = output.Substring(0, output.Length - 1);
            return output;
        }
    }
}