308 lines
14 KiB
C#
308 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Autofac;
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using Myriad.Builders;
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using Myriad.Gateway;
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using Myriad.Rest.Exceptions;
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using Myriad.Rest.Types;
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using Myriad.Rest.Types.Requests;
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using Myriad.Types;
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using NodaTime;
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using PluralKit.Bot.Interactive;
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using PluralKit.Core;
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namespace PluralKit.Bot
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{
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public static class ContextUtils
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{
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public static async Task<bool> ConfirmClear(this Context ctx, string toClear)
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{
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if (!(await ctx.PromptYesNo($"{Emojis.Warn} Are you sure you want to clear {toClear}?", "Clear"))) throw Errors.GenericCancelled();
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else return true;
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}
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public static async Task<bool> PromptYesNo(this Context ctx, string msgString, string acceptButton, User user = null, bool matchFlag = true)
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{
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if (matchFlag && ctx.MatchFlag("y", "yes")) return true;
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var prompt = new YesNoPrompt(ctx)
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{
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Message = msgString,
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AcceptLabel = acceptButton,
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User = user?.Id ?? ctx.Author.Id,
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};
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await prompt.Run();
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return prompt.Result == true;
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}
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public static async Task<MessageReactionAddEvent> AwaitReaction(this Context ctx, Message message, User user = null, Func<MessageReactionAddEvent, bool> predicate = null, Duration? timeout = null)
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{
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bool ReactionPredicate(MessageReactionAddEvent evt)
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{
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if (message.Id != evt.MessageId) return false; // Ignore reactions for different messages
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if (user != null && user.Id != evt.UserId) return false; // Ignore messages from other users if a user was defined
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if (predicate != null && !predicate.Invoke(evt)) return false; // Check predicate
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return true;
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}
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return await ctx.Services.Resolve<HandlerQueue<MessageReactionAddEvent>>().WaitFor(ReactionPredicate, timeout);
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}
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public static async Task<bool> ConfirmWithReply(this Context ctx, string expectedReply)
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{
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bool Predicate(MessageCreateEvent e) =>
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e.Author.Id == ctx.Author.Id && e.ChannelId == ctx.Channel.Id;
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var msg = await ctx.Services.Resolve<HandlerQueue<MessageCreateEvent>>()
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.WaitFor(Predicate, Duration.FromMinutes(1));
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return string.Equals(msg.Content, expectedReply, StringComparison.InvariantCultureIgnoreCase);
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}
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public static async Task Paginate<T>(this Context ctx, IAsyncEnumerable<T> items, int totalCount, int itemsPerPage, string title, string color, Func<EmbedBuilder, IEnumerable<T>, Task> renderer)
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{
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// TODO: make this generic enough we can use it in Choose<T> below
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var buffer = new List<T>();
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await using var enumerator = items.GetAsyncEnumerator();
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var pageCount = (int)Math.Ceiling(totalCount / (double)itemsPerPage);
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async Task<Embed> MakeEmbedForPage(int page)
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{
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var bufferedItemsNeeded = (page + 1) * itemsPerPage;
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while (buffer.Count < bufferedItemsNeeded && await enumerator.MoveNextAsync())
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buffer.Add(enumerator.Current);
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var eb = new EmbedBuilder();
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eb.Title(pageCount > 1 ? $"[{page + 1}/{pageCount}] {title}" : title);
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if (color != null)
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eb.Color(color.ToDiscordColor());
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await renderer(eb, buffer.Skip(page * itemsPerPage).Take(itemsPerPage));
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return eb.Build();
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}
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async Task<int> PromptPageNumber()
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{
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bool Predicate(MessageCreateEvent e) =>
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e.Author.Id == ctx.Author.Id && e.ChannelId == ctx.Channel.Id;
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var msg = await ctx.Services.Resolve<HandlerQueue<MessageCreateEvent>>()
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.WaitFor(Predicate, Duration.FromMinutes(0.5));
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int.TryParse(msg.Content, out int num);
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return num;
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}
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try
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{
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var msg = await ctx.Reply(embed: await MakeEmbedForPage(0));
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if (pageCount <= 1) return; // If we only have one (or no) page, don't bother with the reaction/pagination logic, lol
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string[] botEmojis = { "\u23EA", "\u2B05", "\u27A1", "\u23E9", "\uD83D\uDD22", Emojis.Error };
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var _ = ctx.Rest.CreateReactionsBulk(msg, botEmojis); // Again, "fork"
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try
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{
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var currentPage = 0;
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while (true)
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{
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var reaction = await ctx.AwaitReaction(msg, ctx.Author, timeout: Duration.FromMinutes(5));
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// Increment/decrement page counter based on which reaction was clicked
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if (reaction.Emoji.Name == "\u23EA") currentPage = 0; // <<
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else if (reaction.Emoji.Name == "\u2B05") currentPage = (currentPage - 1) % pageCount; // <
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else if (reaction.Emoji.Name == "\u27A1") currentPage = (currentPage + 1) % pageCount; // >
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else if (reaction.Emoji.Name == "\u23E9") currentPage = pageCount - 1; // >>
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else if (reaction.Emoji.Name == Emojis.Error) break; // X
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else if (reaction.Emoji.Name == "\u0031\uFE0F\u20E3") currentPage = 0;
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else if (reaction.Emoji.Name == "\u0032\uFE0F\u20E3") currentPage = 1;
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else if (reaction.Emoji.Name == "\u0033\uFE0F\u20E3") currentPage = 2;
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else if (reaction.Emoji.Name == "\u0034\uFE0F\u20E3" && pageCount >= 3) currentPage = 3;
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else if (reaction.Emoji.Name == "\u0035\uFE0F\u20E3" && pageCount >= 4) currentPage = 4;
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else if (reaction.Emoji.Name == "\u0036\uFE0F\u20E3" && pageCount >= 5) currentPage = 5;
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else if (reaction.Emoji.Name == "\u0037\uFE0F\u20E3" && pageCount >= 6) currentPage = 6;
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else if (reaction.Emoji.Name == "\u0038\uFE0F\u20E3" && pageCount >= 7) currentPage = 7;
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else if (reaction.Emoji.Name == "\u0039\uFE0F\u20E3" && pageCount >= 8) currentPage = 8;
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else if (reaction.Emoji.Name == "\U0001f51f" && pageCount >= 9) currentPage = 9;
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else if (reaction.Emoji.Name == "\uD83D\uDD22")
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{
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try
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{
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await ctx.Reply("What page would you like to go to?");
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var repliedNum = await PromptPageNumber();
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if (repliedNum < 1)
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{
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await ctx.Reply($"{Emojis.Error} Operation canceled (invalid number).");
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continue;
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}
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if (repliedNum > pageCount)
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{
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await ctx.Reply($"{Emojis.Error} That page number is too high (page count is {pageCount}).");
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continue;
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}
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currentPage = repliedNum - 1;
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}
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catch (TimeoutException)
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{
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await ctx.Reply($"{Emojis.Error} Operation timed out, sorry. Try again, perhaps?");
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continue;
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}
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}
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// C#'s % operator is dumb and wrong, so we fix negative numbers
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if (currentPage < 0) currentPage += pageCount;
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// If we can, remove the user's reaction (so they can press again quickly)
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if (ctx.BotPermissions.HasFlag(PermissionSet.ManageMessages))
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await ctx.Rest.DeleteUserReaction(msg.ChannelId, msg.Id, reaction.Emoji, reaction.UserId);
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// Edit the embed with the new page
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var embed = await MakeEmbedForPage(currentPage);
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await ctx.Rest.EditMessage(msg.ChannelId, msg.Id, new MessageEditRequest { Embed = embed });
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}
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}
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catch (TimeoutException)
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{
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// "escape hatch", clean up as if we hit X
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}
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// todo: re-check
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if (ctx.BotPermissions.HasFlag(PermissionSet.ManageMessages))
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await ctx.Rest.DeleteAllReactions(msg.ChannelId, msg.Id);
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}
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// If we get a "NotFound" error, the message has been deleted and thus not our problem
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catch (NotFoundException) { }
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// If we get an "Unauthorized" error, we don't have permissions to remove our reaction
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// which means we probably didn't add it in the first place, or permissions changed since then
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// either way, nothing to do here
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catch (ForbiddenException) { }
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}
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public static async Task<T> Choose<T>(this Context ctx, string description, IList<T> items, Func<T, string> display = null)
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{
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// Generate a list of :regional_indicator_?: emoji surrogate pairs (starting at codepoint 0x1F1E6)
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// We just do 7 (ABCDEFG), this amount is arbitrary (although sending a lot of emojis takes a while)
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var pageSize = 7;
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var indicators = new string[pageSize];
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for (var i = 0; i < pageSize; i++) indicators[i] = char.ConvertFromUtf32(0x1F1E6 + i);
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// Default to x.ToString()
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if (display == null) display = x => x.ToString();
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string MakeOptionList(int page)
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{
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var makeOptionList = string.Join("\n", items
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.Skip(page * pageSize)
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.Take(pageSize)
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.Select((x, i) => $"{indicators[i]} {display(x)}"));
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return makeOptionList;
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}
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// If we have more items than the page size, we paginate as appropriate
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if (items.Count > pageSize)
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{
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var currPage = 0;
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var pageCount = (items.Count - 1) / pageSize + 1;
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// Send the original message
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var msg = await ctx.Reply($"**[Page {currPage + 1}/{pageCount}]**\n{description}\n{MakeOptionList(currPage)}");
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// Add back/forward reactions and the actual indicator emojis
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async Task AddEmojis()
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{
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await ctx.Rest.CreateReaction(msg.ChannelId, msg.Id, new() { Name = "\u2B05" });
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await ctx.Rest.CreateReaction(msg.ChannelId, msg.Id, new() { Name = "\u27A1" });
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for (int i = 0; i < items.Count; i++)
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await ctx.Rest.CreateReaction(msg.ChannelId, msg.Id, new() { Name = indicators[i] });
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}
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var _ = AddEmojis(); // Not concerned about awaiting
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while (true)
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{
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// Wait for a reaction
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var reaction = await ctx.AwaitReaction(msg, ctx.Author);
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// If it's a movement reaction, inc/dec the page index
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if (reaction.Emoji.Name == "\u2B05") currPage -= 1; // <
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if (reaction.Emoji.Name == "\u27A1") currPage += 1; // >
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if (currPage < 0) currPage += pageCount;
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if (currPage >= pageCount) currPage -= pageCount;
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// If it's an indicator emoji, return the relevant item
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if (indicators.Contains(reaction.Emoji.Name))
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{
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var idx = Array.IndexOf(indicators, reaction.Emoji.Name) + pageSize * currPage;
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// only if it's in bounds, though
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// eg. 8 items, we're on page 2, and I hit D (3 + 1*7 = index 10 on an 8-long list) = boom
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if (idx < items.Count) return items[idx];
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}
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var __ = ctx.Rest.DeleteUserReaction(msg.ChannelId, msg.Id, reaction.Emoji, ctx.Author.Id);
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await ctx.Rest.EditMessage(msg.ChannelId, msg.Id,
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new()
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{
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Content =
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$"**[Page {currPage + 1}/{pageCount}]**\n{description}\n{MakeOptionList(currPage)}"
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});
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}
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}
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else
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{
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var msg = await ctx.Reply($"{description}\n{MakeOptionList(0)}");
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// Add the relevant reactions (we don't care too much about awaiting)
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async Task AddEmojis()
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{
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for (int i = 0; i < items.Count; i++)
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await ctx.Rest.CreateReaction(msg.ChannelId, msg.Id, new() { Name = indicators[i] });
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}
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var _ = AddEmojis();
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// Then wait for a reaction and return whichever one we found
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var reaction = await ctx.AwaitReaction(msg, ctx.Author, rx => indicators.Contains(rx.Emoji.Name));
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return items[Array.IndexOf(indicators, reaction.Emoji.Name)];
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}
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}
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public static async Task BusyIndicator(this Context ctx, Func<Task> f, string emoji = "\u23f3" /* hourglass */)
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{
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await ctx.BusyIndicator<object>(async () =>
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{
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await f();
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return null;
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}, emoji);
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}
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public static async Task<T> BusyIndicator<T>(this Context ctx, Func<Task<T>> f, string emoji = "\u23f3" /* hourglass */)
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{
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var task = f();
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// If we don't have permission to add reactions, don't bother, and just await the task normally.
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if (!DiscordUtils.HasReactionPermissions(ctx)) return await task;
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try
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{
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await Task.WhenAll(ctx.Rest.CreateReaction(ctx.Message.ChannelId, ctx.Message.Id, new() { Name = emoji }), task);
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return await task;
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}
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finally
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{
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var _ = ctx.Rest.DeleteOwnReaction(ctx.Message.ChannelId, ctx.Message.Id, new() { Name = emoji });
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}
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}
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}
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} |