KfChatDotNet/KfChatDotNetBot/Commands/ImageCommands.cs

using System.Text.RegularExpressions;
using KfChatDotNetBot.Models;
using KfChatDotNetBot.Models.DbModels;
using KfChatDotNetBot.Services;
using KfChatDotNetBot.Settings;
using KfChatDotNetWsClient.Models.Events;
using Microsoft.EntityFrameworkCore;
using NLog;

namespace KfChatDotNetBot.Commands;

public class AddImageCommand : ICommand
{
    public List<Regex> Patterns => [
        new Regex(@"^admin image (?<key>\w+) add (?<url>.+)$"),
        new Regex(@"^admin images (?<key>\w+) add (?<url>.+)$")
    ];
    public string? HelpText => "Add an image to the image rotation specified";
    public UserRight RequiredRight => UserRight.TrueAndHonest;
    public TimeSpan Timeout => TimeSpan.FromSeconds(10);

    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments,
        CancellationToken ctx)
    {
        await using var db = new ApplicationDbContext();
        var imageKeys = (await Helpers.GetValue(BuiltIn.Keys.BotImageAcceptableKeys)).JsonDeserialize<List<string>>();
        if (imageKeys == null) throw new InvalidOperationException($"{BuiltIn.Keys.BotImageAcceptableKeys} was null");
        var key = arguments["key"].Value;
        var url = arguments["url"].Value;
        if (!imageKeys.Contains(key))
        {
            await botInstance.SendChatMessageAsync(
                $"Key you specified is not supported. Available keys are: {string.Join(' ', imageKeys)}", true);
            return;
        }

        if (await db.Images.AnyAsync(i => i.Key == key && i.Url == url, ctx))
        {
            await botInstance.SendChatMessageAsync("This image already exists in the database with this key", true);
            return;
        }

        await db.Images.AddAsync(new ImageDbModel { Key = key, Url = url, LastSeen = DateTimeOffset.MinValue }, ctx);
        await db.SaveChangesAsync(ctx);
        await botInstance.SendChatMessageAsync("Added image to database", true);
    }
}

public class RemoveImageCommand : ICommand
{
    public List<Regex> Patterns => [
        new Regex(@"^admin image (?<key>\w+) remove (?<url>.+)$"),
        new Regex(@"^admin images (?<key>\w+) remove (?<url>.+)$"),
        new Regex(@"^admin image (?<key>\w+) delete (?<url>.+)$"),
        new Regex(@"^admin images (?<key>\w+) delete (?<url>.+)$")
    ];
    public string? HelpText => "Remove an image from the image rotation specified";
    public UserRight RequiredRight => UserRight.TrueAndHonest;
    public TimeSpan Timeout => TimeSpan.FromSeconds(10);

    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments,
        CancellationToken ctx)
    {
        await using var db = new ApplicationDbContext();
        var imageKeys = (await Helpers.GetValue(BuiltIn.Keys.BotImageAcceptableKeys)).JsonDeserialize<List<string>>();
        if (imageKeys == null) throw new InvalidOperationException($"{BuiltIn.Keys.BotImageAcceptableKeys} was null");
        var key = arguments["key"].Value;
        var url = arguments["url"].Value;
        if (!imageKeys.Contains(key))
        {
            await botInstance.SendChatMessageAsync(
                $"Key you specified is not supported. Available keys are: {string.Join(' ', imageKeys)}", true);
            return;
        }

        var image = await db.Images.FirstOrDefaultAsync(i => i.Key == key && i.Url == url, ctx);
        if (image == null)
        {
            await botInstance.SendChatMessageAsync("This image isn't in the database with this key", true);
            return;
        }

        db.Images.Remove(image);
        await db.SaveChangesAsync(ctx);
        await botInstance.SendChatMessageAsync("Removed image from database", true);
    }
}

public class ListImageCommand : ICommand
{
    public List<Regex> Patterns => [
        new Regex(@"^admin image (?<key>\w+) list$"),
        new Regex(@"^admin images (?<key>\w+) list$")
    ];
    public string? HelpText => "Remove an image from the image rotation specified";
    public UserRight RequiredRight => UserRight.TrueAndHonest;
    public TimeSpan Timeout => TimeSpan.FromSeconds(10);

    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments,
        CancellationToken ctx)
    {
        await using var db = new ApplicationDbContext();
        var imageKeys = (await Helpers.GetValue(BuiltIn.Keys.BotImageAcceptableKeys)).JsonDeserialize<List<string>>();
        if (imageKeys == null) throw new InvalidOperationException($"{BuiltIn.Keys.BotImageAcceptableKeys} was null");
        var key = arguments["key"].Value;
        if (!imageKeys.Contains(key))
        {
            await botInstance.SendChatMessageAsync(
                $"Key you specified is not supported. Available keys are: {string.Join(' ', imageKeys)}", true);
            return;
        }

        var images = db.Images.Where(i => i.Key == key);
        var i = 0;
        var result = $"List of images for {key}:";
        foreach (var image in images)
        {
            i++;
            var ts = DateTimeOffset.UtcNow - image.LastSeen;
            result += $"[br]{i}: {image.Url} (Last seen {ts.TotalDays:N0}d{ts.Hours:N0}h{ts.Minutes:N0}m{ts.Seconds:N0}s ago)";
        }

        await botInstance.SendChatMessagesAsync(result.FancySplitMessage(partSeparator: "[br]"),
            bypassSeshDetect: true);
    }
}

[AllowAdditionalMatches]
public class GetRandomImage : ICommand
{
    public List<Regex> Patterns => [
        new Regex(@"^(?<key>\w+)")
    ];
    public string? HelpText => "Get a random image";
    public UserRight RequiredRight => UserRight.Loser;
    public TimeSpan Timeout => TimeSpan.FromMinutes(10);

    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments,
        CancellationToken ctx)
    {
        var logger = LogManager.GetCurrentClassLogger();
        await using var db = new ApplicationDbContext();
        var key = arguments["key"].Value.ToLower();
        var images = db.Images.Where(i => i.Key == key);
        if (!await images.AnyAsync(ctx)) return;
        var settings = await Helpers.GetMultipleValues([
            BuiltIn.Keys.BotImageRandomSliceDivideBy, BuiltIn.Keys.BotImagePigCubeSelfDestruct
        ]);
        var divideBy = settings[BuiltIn.Keys.BotImageRandomSliceDivideBy].ToType<int>();
        var limit = 1;
        var count = await images.CountAsync(ctx);
        if (count > divideBy)
        {
            limit = count / divideBy;
        }

        // EF with SQLite can't sort on dates as it's just TEXT
        var selection = (await images.ToListAsync(ctx)).OrderBy(i => i.LastSeen).Take(limit).ToList();
        // MaxValue is never returned by Next so you don't need to -1 for indexing
        var image = selection[new Random().Next(0, selection.Count)];
        image.LastSeen = DateTimeOffset.UtcNow;
        db.Images.Update(image);
        await db.SaveChangesAsync(ctx);
        var msg = await botInstance.SendChatMessageAsync($"[img]{image.Url}[/img]", true);
        if (key != "pigcube" || !settings[BuiltIn.Keys.BotImagePigCubeSelfDestruct].ToBoolean()) return;
        while (msg.Status is SentMessageTrackerStatus.WaitingForResponse or SentMessageTrackerStatus.ChatDisconnected)
        {
            await Task.Delay(500, ctx);
        }

        if (msg.Status is SentMessageTrackerStatus.Lost or SentMessageTrackerStatus.NotSending)
        {
            logger.Error("Pig cube got lost");
            return;
        }

        if (msg.ChatMessageId == null)
        {
            logger.Error($"Pig cube chat message ID was null even though status was {msg.Status}");
            return;
        }
        var timeToDeletionMsec = new Random().Next(5 * 1000, 60 * 1000);
        await Task.Delay(timeToDeletionMsec, ctx);
        await botInstance.KfClient.DeleteMessageAsync(msg.ChatMessageId.Value);
    }
}