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Kwoth
376
NadekoBot.Core/Modules/Gambling/Services/PlantPickService.cs
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376
NadekoBot.Core/Modules/Gambling/Services/PlantPickService.cs
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using Discord;
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using Discord.WebSocket;
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using Microsoft.EntityFrameworkCore;
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using NadekoBot.Common;
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using NadekoBot.Common.Collections;
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using NadekoBot.Core.Services;
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using NadekoBot.Core.Services.Database.Models;
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using NadekoBot.Core.Services.Database.Repositories;
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using NadekoBot.Core.Services.Impl;
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using NadekoBot.Extensions;
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using SixLabors.Fonts;
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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.Drawing.Processing;
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using SixLabors.ImageSharp.PixelFormats;
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using SixLabors.ImageSharp.Processing;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using NadekoBot.Core.Modules.Gambling.Services;
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using Image = SixLabors.ImageSharp.Image;
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using Color = SixLabors.ImageSharp.Color;
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namespace NadekoBot.Modules.Gambling.Services
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{
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public class PlantPickService : INService
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{
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private readonly DbService _db;
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private readonly IBotStrings _strings;
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private readonly IImageCache _images;
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private readonly FontProvider _fonts;
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private readonly ICurrencyService _cs;
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private readonly CommandHandler _cmdHandler;
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private readonly NadekoRandom _rng;
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private readonly DiscordSocketClient _client;
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private readonly GamblingConfigService _gss;
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public readonly ConcurrentHashSet<ulong> _generationChannels = new ConcurrentHashSet<ulong>();
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//channelId/last generation
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public ConcurrentDictionary<ulong, DateTime> LastGenerations { get; } = new ConcurrentDictionary<ulong, DateTime>();
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private readonly SemaphoreSlim pickLock = new SemaphoreSlim(1, 1);
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public PlantPickService(DbService db, CommandHandler cmd, IBotStrings strings,
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IDataCache cache, FontProvider fonts, ICurrencyService cs,
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CommandHandler cmdHandler, DiscordSocketClient client, GamblingConfigService gss)
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{
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_db = db;
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_strings = strings;
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_images = cache.LocalImages;
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_fonts = fonts;
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_cs = cs;
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_cmdHandler = cmdHandler;
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_rng = new NadekoRandom();
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_client = client;
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_gss = gss;
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cmd.OnMessageNoTrigger += PotentialFlowerGeneration;
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using (var uow = db.GetDbContext())
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{
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var guildIds = client.Guilds.Select(x => x.Id).ToList();
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var configs = uow._context.Set<GuildConfig>()
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.AsQueryable()
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.Include(x => x.GenerateCurrencyChannelIds)
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.Where(x => guildIds.Contains(x.GuildId))
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.ToList();
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_generationChannels = new ConcurrentHashSet<ulong>(configs
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.SelectMany(c => c.GenerateCurrencyChannelIds.Select(obj => obj.ChannelId)));
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}
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}
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private string GetText(ulong gid, string key, params object[] rep)
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=> _strings.GetText(key, gid, rep);
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public bool ToggleCurrencyGeneration(ulong gid, ulong cid)
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{
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bool enabled;
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using (var uow = _db.GetDbContext())
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{
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var guildConfig = uow.GuildConfigs.ForId(gid, set => set.Include(gc => gc.GenerateCurrencyChannelIds));
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var toAdd = new GCChannelId() { ChannelId = cid };
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if (!guildConfig.GenerateCurrencyChannelIds.Contains(toAdd))
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{
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guildConfig.GenerateCurrencyChannelIds.Add(toAdd);
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_generationChannels.Add(cid);
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enabled = true;
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}
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else
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{
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var toDelete = guildConfig.GenerateCurrencyChannelIds.FirstOrDefault(x => x.Equals(toAdd));
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if (toDelete != null)
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{
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uow._context.Remove(toDelete);
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}
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_generationChannels.TryRemove(cid);
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enabled = false;
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}
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uow.SaveChanges();
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}
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return enabled;
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}
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public IEnumerable<GeneratingChannel> GetAllGeneratingChannels()
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{
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using (var uow = _db.GetDbContext())
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{
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var chs = uow.GuildConfigs.GetGeneratingChannels();
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return chs;
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}
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}
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/// <summary>
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/// Get a random currency image stream, with an optional password sticked onto it.
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/// </summary>
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/// <param name="pass">Optional password to add to top left corner.</param>
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/// <returns>Stream of the currency image</returns>
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public Stream GetRandomCurrencyImage(string pass, out string extension)
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{
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// get a random currency image bytes
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var rng = new NadekoRandom();
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var curImg = _images.Currency[rng.Next(0, _images.Currency.Count)];
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if (string.IsNullOrWhiteSpace(pass))
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{
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// determine the extension
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using (var img = Image.Load(curImg, out var format))
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{
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extension = format.FileExtensions.FirstOrDefault() ?? "png";
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}
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// return the image
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return curImg.ToStream();
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}
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// get the image stream and extension
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var (s, ext) = AddPassword(curImg, pass);
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// set the out extension parameter to the extension we've got
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extension = ext;
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// return the image
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return s;
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}
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/// <summary>
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/// Add a password to the image.
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/// </summary>
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/// <param name="curImg">Image to add password to.</param>
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/// <param name="pass">Password to add to top left corner.</param>
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/// <returns>Image with the password in the top left corner.</returns>
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private (Stream, string) AddPassword(byte[] curImg, string pass)
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{
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// draw lower, it looks better
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pass = pass.TrimTo(10, true).ToLowerInvariant();
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using (var img = Image.Load<Rgba32>(curImg, out var format))
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{
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// choose font size based on the image height, so that it's visible
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var font = _fonts.NotoSans.CreateFont(img.Height / 12, FontStyle.Bold);
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img.Mutate(x =>
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{
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// measure the size of the text to be drawing
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var size = TextMeasurer.Measure(pass, new RendererOptions(font, new PointF(0, 0)));
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// fill the background with black, add 5 pixels on each side to make it look better
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x.FillPolygon(Color.ParseHex("00000080"),
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new PointF(0, 0),
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new PointF(size.Width + 5, 0),
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new PointF(size.Width + 5, size.Height + 10),
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new PointF(0, size.Height + 10));
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// draw the password over the background
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x.DrawText(pass,
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font,
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SixLabors.ImageSharp.Color.White,
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new PointF(0, 0));
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});
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// return image as a stream for easy sending
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return (img.ToStream(format), format.FileExtensions.FirstOrDefault() ?? "png");
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}
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}
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private Task PotentialFlowerGeneration(IUserMessage imsg)
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{
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var msg = imsg as SocketUserMessage;
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if (msg == null || msg.Author.IsBot)
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return Task.CompletedTask;
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if (!(imsg.Channel is ITextChannel channel))
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return Task.CompletedTask;
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if (!_generationChannels.Contains(channel.Id))
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return Task.CompletedTask;
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var _ = Task.Run(async () =>
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{
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try
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{
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var config = _gss.Data;
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var lastGeneration = LastGenerations.GetOrAdd(channel.Id, DateTime.MinValue);
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var rng = new NadekoRandom();
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if (DateTime.UtcNow - TimeSpan.FromSeconds(config.Generation.GenCooldown) < lastGeneration) //recently generated in this channel, don't generate again
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return;
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var num = rng.Next(1, 101) + config.Generation.Chance * 100;
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if (num > 100 && LastGenerations.TryUpdate(channel.Id, DateTime.UtcNow, lastGeneration))
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{
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var dropAmount = config.Generation.MinAmount;
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var dropAmountMax = config.Generation.MaxAmount;
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if (dropAmountMax > dropAmount)
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dropAmount = new NadekoRandom().Next(dropAmount, dropAmountMax + 1);
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if (dropAmount > 0)
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{
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var prefix = _cmdHandler.GetPrefix(channel.Guild.Id);
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var toSend = dropAmount == 1
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? GetText(channel.GuildId, "curgen_sn", config.Currency.Sign)
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+ " " + GetText(channel.GuildId, "pick_sn", prefix)
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: GetText(channel.GuildId, "curgen_pl", dropAmount, config.Currency.Sign)
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+ " " + GetText(channel.GuildId, "pick_pl", prefix);
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var pw = config.Generation.HasPassword ? GenerateCurrencyPassword().ToUpperInvariant() : null;
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IUserMessage sent;
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using (var stream = GetRandomCurrencyImage(pw, out var ext))
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{
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sent = await channel.SendFileAsync(stream, $"currency_image.{ext}", toSend).ConfigureAwait(false);
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}
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await AddPlantToDatabase(channel.GuildId,
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channel.Id,
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_client.CurrentUser.Id,
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sent.Id,
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dropAmount,
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pw).ConfigureAwait(false);
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}
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}
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}
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catch
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{
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}
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});
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return Task.CompletedTask;
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}
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/// <summary>
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/// Generate a hexadecimal string from 1000 to ffff.
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/// </summary>
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/// <returns>A hexadecimal string from 1000 to ffff</returns>
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private string GenerateCurrencyPassword()
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{
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// generate a number from 1000 to ffff
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var num = _rng.Next(4096, 65536);
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// convert it to hexadecimal
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return num.ToString("x4");
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}
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public async Task<long> PickAsync(ulong gid, ITextChannel ch, ulong uid, string pass)
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{
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await pickLock.WaitAsync();
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try
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{
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long amount;
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ulong[] ids;
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using (var uow = _db.GetDbContext())
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{
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// this method will sum all plants with that password,
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// remove them, and get messageids of the removed plants
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(amount, ids) = uow.PlantedCurrency.RemoveSumAndGetMessageIdsFor(ch.Id, pass);
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if (amount > 0)
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{
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// give the picked currency to the user
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await _cs.AddAsync(uid, "Picked currency", amount, gamble: false);
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}
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uow.SaveChanges();
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}
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try
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{
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// delete all of the plant messages which have just been picked
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var _ = ch.DeleteMessagesAsync(ids);
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}
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catch { }
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// return the amount of currency the user picked
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return amount;
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}
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finally
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{
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pickLock.Release();
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}
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}
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public async Task<ulong?> SendPlantMessageAsync(ulong gid, IMessageChannel ch, string user, long amount, string pass)
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{
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try
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{
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// get the text
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var prefix = _cmdHandler.GetPrefix(gid);
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var msgToSend = GetText(gid,
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"planted",
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Format.Bold(user),
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amount + _gss.Data.Currency.Sign,
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prefix);
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if (amount > 1)
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msgToSend += " " + GetText(gid, "pick_pl", prefix);
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else
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msgToSend += " " + GetText(gid, "pick_sn", prefix);
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//get the image
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using (var stream = GetRandomCurrencyImage(pass, out var ext))
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{
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// send it
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var msg = await ch.SendFileAsync(stream, $"img.{ext}", msgToSend).ConfigureAwait(false);
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// return sent message's id (in order to be able to delete it when it's picked)
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return msg.Id;
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}
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}
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catch
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{
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// if sending fails, return null as message id
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return null;
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}
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}
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public async Task<bool> PlantAsync(ulong gid, IMessageChannel ch, ulong uid, string user, long amount, string pass)
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{
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// normalize it - no more than 10 chars, uppercase
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pass = pass?.Trim().TrimTo(10, hideDots: true).ToUpperInvariant();
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// has to be either null or alphanumeric
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if (!string.IsNullOrWhiteSpace(pass) && !pass.IsAlphaNumeric())
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return false;
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// remove currency from the user who's planting
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if (await _cs.RemoveAsync(uid, "Planted currency", amount, gamble: false))
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{
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// try to send the message with the currency image
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var msgId = await SendPlantMessageAsync(gid, ch, user, amount, pass).ConfigureAwait(false);
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if (msgId == null)
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{
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// if it fails it will return null, if it returns null, refund
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await _cs.AddAsync(uid, "Planted currency refund", amount, gamble: false);
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return false;
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}
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// if it doesn't fail, put the plant in the database for other people to pick
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await AddPlantToDatabase(gid, ch.Id, uid, msgId.Value, amount, pass).ConfigureAwait(false);
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return true;
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}
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// if user doesn't have enough currency, fail
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return false;
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}
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private async Task AddPlantToDatabase(ulong gid, ulong cid, ulong uid, ulong mid, long amount, string pass)
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{
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using (var uow = _db.GetDbContext())
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{
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uow.PlantedCurrency.Add(new PlantedCurrency
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{
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Amount = amount,
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GuildId = gid,
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ChannelId = cid,
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Password = pass,
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UserId = uid,
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MessageId = mid,
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});
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await uow.SaveChangesAsync();
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}
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}
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}
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}
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