using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using ChaosBot.Database.Entity;
using Microsoft.Data.Sqlite;

namespace ChaosBot.Database.Repository
{
    public static class RaffleRepository
    {
        private static readonly string Table = "RaffleTable"; 
        
        /// <summary>
        /// Fetch all <c>Raffle</c>s
        /// </summary>
        /// <returns>List of raffles</returns>
        public static Raffle[] All()
        { 
            DataTable dataTable = Controller.SelectQuery(Table);
            
            List<Raffle> raffles = new List<Raffle>();
            foreach (DataRow row in dataTable.Rows)
            {
                int id = Convert.ToInt32((long) row["id"]);
                string userId = row["userId"].ToString();
                string guildId = row["guildId"].ToString();
                
                raffles.Add(new Raffle(id, userId, guildId));
            }

            return raffles.ToArray();
        } 
        
        /// <summary>
        /// Fetch all <c>Raffle</c>s filtered by guildId
        /// </summary>
        /// <param name="guildId"></param>
        /// <returns>List of raffles</returns>
        public static Raffle[] All(string guildId)
        { 
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("guildId", guildId);
            
            DataTable dataTable = Controller.SelectQuery(Table, filterColumns: filterDict);
            
            List<Raffle> raffles = new List<Raffle>();
            foreach (DataRow row in dataTable.Rows)
            {
                int idFetch = Convert.ToInt32((long) row["id"]);
                string userIdFetch = row["userId"].ToString();
                string guildIdFetch = row["guildId"].ToString();
                
                raffles.Add(new Raffle(idFetch, userIdFetch, guildIdFetch));
            }

            return raffles.ToArray();
        } 
        
        /// <summary>
        /// Count amount of <c>Raffle</c>s
        /// </summary>
        /// <returns>Amount of raffles</returns>
        public static int Count()
        { 
            DataTable dataTable = Controller.SelectQuery(Table, "COUNT(*)");

            return Convert.ToInt32(dataTable.Rows[0]["COUNT(*)"]);
        }
        
        /// <summary>
        /// Count amount of <c>Raffle</c>s filtered by guildId
        /// </summary>
        /// <param name="guildId"></param>
        /// <returns>Amount of raffles</returns>
        public static int Count(string guildId)
        { 
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("guildId", guildId);

            DataTable dataTable = Controller.SelectQuery(Table, "COUNT(*)", filterDict);

            return Convert.ToInt32(dataTable.Rows[0]["COUNT(*)"]);
        }

        /// <summary>
        /// Count amount of <c>Raffle</c>s filtered by guildId
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="guildId"></param>
        /// <returns>Amount of raffles</returns>
        public static int Count(string userId, string guildId)
        { 
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("userId", userId);
            filterDict.Add("guildId", guildId);
            
            DataTable dataTable = Controller.SelectQuery(Table, "COUNT(*)", filterDict);

            return Convert.ToInt32(dataTable.Rows[0]["COUNT(*)"]);
        }
        
        /// <summary>
        /// Get all <c>Raffle</c>s from a user
        /// </summary>
        /// <param name="userId"></param>
        /// <returns>List of raffles</returns>
        public static Raffle[] SelectUser(string userId)
        { 
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("userId", userId);
            
            DataTable dataTable = Controller.SelectQuery(Table, filterColumns: filterDict);
            
            List<Raffle> raffles = new List<Raffle>();
            foreach (DataRow row in dataTable.Rows)
            {
                int id = Convert.ToInt32((long) row["id"]);
                string userIdFetch = row["userId"].ToString();
                string guildIdFetch = row["guildId"].ToString();
                
                raffles.Add(new Raffle(id, userIdFetch, guildIdFetch));
            }

            return raffles.ToArray();
        }
        
        /// <summary>
        /// Get all <c>Raffle</c>s from a user filtered by guild
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="guildId"></param>
        /// <returns>List of raffles</returns>
        public static Raffle[] SelectUser(string userId, string guildId)
        { 
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("userId", userId);
            filterDict.Add("guildId", guildId);
            
            DataTable dataTable = Controller.SelectQuery(Table, filterColumns: filterDict);
            
            List<Raffle> raffles = new List<Raffle>();
            foreach (DataRow row in dataTable.Rows)
            {
                int id = Convert.ToInt32((long) row["id"]);
                string userIdFetch = row["userId"].ToString();
                string guildIdFetch = row["guildId"].ToString();
                
                raffles.Add(new Raffle(id, userIdFetch, guildIdFetch));
            }

            return raffles.ToArray();
        }

        /// <summary>
        /// Insert a <c>Raffle</c> into the database
        /// </summary>
        /// <param name="raffle"></param>
        public static void Insert(Raffle raffle)
        {
            Dictionary<string, object> dict = new Dictionary<string, object>();
            
            dict.Add("userId", raffle.userId);
            dict.Add("guildId", raffle.guildId);
            
            Controller.InsertQuery(Table, dict);
        }

        /// <summary>
        /// Insert a <c>List</c> of <c>Raffle</c>s into the database
        /// </summary>
        /// <param name="raffles"></param>
        public static void MassInsert(List<Raffle> raffles)
        {
            foreach (var raf in raffles)
            {
                Dictionary<string, object> dict = new Dictionary<string, object>();

                dict.Add("userId", raf.userId);
                dict.Add("guildId", raf.guildId);
                
                Controller.InsertQuery(Table, dict);
            }
        }

        /// <summary>
        /// Pick a random raffle from the database filtered to a guild
        /// </summary>
        /// <param name="guildId"></param>
        /// <returns>Random raffle</returns>
        public static Raffle PickRandom(string guildId)
        {
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("guildId", guildId);
            
            DataTable dataTable = Controller.SelectQuery(Table, "*", filterDict, "RANDOM()");

            if (dataTable.Rows.Count == 0) return null;
            DataRow row = dataTable.Rows[0];
            int idFetch = Convert.ToInt32((long)row["id"]);
            string userIdFetch = row["userId"].ToString();
            string guildIdFetch = row["guildId"].ToString();
            return new Raffle(idFetch, userIdFetch, guildIdFetch);
        }

        /// <summary>
        /// Clear all <c>Raffle</c>s for a given guild
        /// </summary>
        /// <param name="guildId"></param>
        public static void ClearRaffle(string guildId)
        {
            Dictionary<string,object> filterDict = new Dictionary<string, object>();
            
            filterDict.Add("guildId", guildId);
            
            Controller.DeleteQuery(Table, filterDict);
        }
        
        /// <summary>
        /// Delete a <c>Raffle</c> by id
        /// </summary>
        /// <param name="id"></param>
        public static void Delete(int id)
        {     
            Dictionary<string, object> filterDict = new Dictionary<string, object>();
            filterDict.Add("id", id);
            
            Controller.DeleteQuery(Table, filterDict);
        }
    }
}