using System;
using System.Collections.Generic;
using System.Linq;
using T3k3rg0.Helpers.Data;
using T3k3rg0.Helpers.Models;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;

namespace T3k3rg0.Helpers
{
    public static class ReactionRoleService
    {
        public static ulong? GetRoleId(ulong messageId, string emoji)
        {
            using var db = new RolesDbContext();
            var entry = db.ReactionRoles
                .FirstOrDefault(r => r.MessageId == messageId && r.Emoji == emoji);

            return entry?.RoleId;
        }

        public static List<(string Emoji, ulong RoleId)> GetAllRolesForMessage(ulong messageId)
        {
            using var db = new RolesDbContext();
            return db.ReactionRoles
            .Where(r => r.MessageId == messageId)
            .ToList()
            .Select(r => (r.Emoji, r.RoleId))
            .ToList();
        }

        public static void AddReactionRole(ulong messageId, string emoji, ulong roleId)
        {
            using var db = new RolesDbContext();
            db.ReactionRoles.Add(new ReactionRole
            {
                MessageId = messageId,
                Emoji = emoji,
                RoleId = roleId
            });
            db.SaveChanges();
        }

        public static void RemoveReactionRole(ulong messageId, string emoji)
        {
            using var db = new RolesDbContext();
            var entry = db.ReactionRoles
                .FirstOrDefault(r => r.MessageId == messageId && r.Emoji == emoji);

            if (entry != null)
            {
                db.ReactionRoles.Remove(entry);
                db.SaveChanges();
            }
        }

        public static List<ReactionRole> GetAllReactionRoles()
        {
            using var db = new RolesDbContext();
            return db.ReactionRoles.ToList();  // Minden rekord lekérése az adatbázisból
        }
        public static async Task<List<ReactionRole>> GetAllReactionRolesAsync()
        {
            await using var db = new RolesDbContext();
            return await db.ReactionRoles
                .OrderBy(r => r.MessageId)
                .ThenBy(r => r.Emoji)
                .ToListAsync();
        }

        public static async Task<(bool Success, string? Message, string? Emoji, ulong? RoleId)> RemoveReactionRoleByIdAsync(int id)
        {
            try
            {
                await using var db = new RolesDbContext();

                var allRoles = (await db.ReactionRoles.ToListAsync())
                   .OrderBy(r => r.MessageId)
                   .ThenBy(r => r.Emoji)
                   .ToList();

                if (id < 1 || id > allRoles.Count)
                    return (false, "❌ Érvénytelen ID.", null, null);

                var toRemove = allRoles[id - 1];
                db.ReactionRoles.Remove(toRemove);
                await db.SaveChangesAsync();

                return (true, null, toRemove.Emoji, toRemove.RoleId);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                return (false, "❌ Hiba történt az eltávolítás során.", null, null);
            }
        }
    }
}