Updated Searches module

src/EllieBot/Modules/Searches/Crypto/CryptoCommands.cs

@@ -18,7 +18,7 @@ public partial class Searches
         }
 
         [Cmd]
-        public async Task Stock([Leftover]string query)
+        public async Task Stock([Leftover] string query)
         {
             using var typing = ctx.Channel.EnterTypingState();
 
@@ -105,10 +105,7 @@ public partial class Searches
             await message.ModifyAsync(mp =>
             {
                 mp.Attachments =
-                    new(new[]
-                    {
-                        attachment
-                    });
+                    new(new[] { attachment });
 
                 mp.Embed = eb.WithImageUrl($"attachment://{fileName}").Build();
             });
@@ -165,7 +162,8 @@ public partial class Searches
                                 .WithAuthor($"#{crypto.CmcRank}")
                                 .WithTitle($"{crypto.Name} ({crypto.Symbol})")
                                 .WithUrl($"https://coinmarketcap.com/currencies/{crypto.Slug}/")
-                            .WithThumbnailUrl($"https://s3.coinmarketcap.com/static/img/coins/128x128/{crypto.Id}.png")
+                                .WithThumbnailUrl(
+                                    $"https://s3.coinmarketcap.com/static/img/coins/128x128/{crypto.Id}.png")
                                 .AddField(GetText(strs.market_cap), marketCap, true)
                                 .AddField(GetText(strs.price), price, true)
                                 .AddField(GetText(strs.volume_24h), volume, true)
@@ -192,5 +190,54 @@ public partial class Searches
 
             await ctx.Channel.SendFileAsync(sparkline, fileName, embed: toSend.Build());
         }
+
+        [Cmd]
+        public async Task Coins(int page = 1)
+        {
+            if (--page < 0)
+                return;
+
+            if (page > 25)
+                page = 25;
+
+            await Response()
+                  .Paginated()
+                  .PageItems(async (page) =>
+                  {
+                      var coins = await _service.GetTopCoins(page);
+                      return coins;
+                  })
+                  .PageSize(10)
+                  .Page((items, _) =>
+                  {
+                      var embed = _sender.CreateEmbed()
+                                         .WithOkColor();
+
+                      if (items.Count > 0)
+                      {
+                          foreach (var coin in items)
+                          {
+                              embed.AddField($"#{coin.MarketCapRank} {coin.Symbol} - {coin.Name}",
+                                  $"""
+                                   `Price:` {GetArrowEmoji(coin.PercentChange24h)} {coin.CurrentPrice.ToShortString()}$ ({GetSign(coin.PercentChange24h)}{Math.Round(coin.PercentChange24h, 2)}%)
+                                   `MarketCap:` {coin.MarketCap.ToShortString()}$
+                                   `Supply:` {(coin.CirculatingSupply?.ToShortString() ?? "?")} / {(coin.TotalSupply?.ToShortString() ?? "?")}
+                                   """,
+                                  inline: false);
+                          }
+                      }
+
+                      return embed;
+                  })
+                  .CurrentPage(page)
+                  .AddFooter(false)
+                  .SendAsync();
+        }
+
+        private static string GetArrowEmoji(decimal value)
+            => value > 0 ? "▲" : "▼";
+
+        private static string GetSign(decimal value)
+            => value >= 0 ? "+" : "-";
     }
 }

src/EllieBot/Modules/Searches/Crypto/CryptoService.cs

@@ -4,8 +4,10 @@ using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Drawing.Processing;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Processing;
+using System.Collections.ObjectModel;
 using System.Globalization;
 using System.Net.Http.Json;
+using System.Text.Json.Serialization;
 using System.Xml;
 using Color = SixLabors.ImageSharp.Color;
 using StringExtensions = EllieBot.Extensions.StringExtensions;
@@ -212,4 +214,55 @@ public class CryptoService : IEService
         var points = GetSparklinePointsFromSvgText(str);
         return points;
     }
+
+    private static TypedKey<IReadOnlyCollection<GeckoCoinsResult>> GetTopCoinsKey()
+        => new($"crypto:top_coins");
+
+    public async Task<IReadOnlyCollection<GeckoCoinsResult>?> GetTopCoins(int page)
+    {
+        if (page >= 25)
+            page = 24;
+
+        using var http = _httpFactory.CreateClient();
+
+        http.AddFakeHeaders();
+
+        var result = await _cache.GetOrAddAsync<IReadOnlyCollection<GeckoCoinsResult>>(GetTopCoinsKey(),
+            async () => await http.GetFromJsonAsync<List<GeckoCoinsResult>>(
+                            "https://api.coingecko.com/api/v3/coins/markets?vs_currency=usd&order=market_cap_desc&per_page=250")
+                        ?? [],
+            expiry: TimeSpan.FromHours(1));
+
+        return result!.Skip(page * 10).Take(10).ToList();
+    }
+}
+
+public sealed class GeckoCoinsResult
+{
+    [JsonPropertyName("id")]
+    public required string Id { get; init; }
+
+    [JsonPropertyName("name")]
+    public required string Name { get; init; }
+
+    [JsonPropertyName("symbol")]
+    public required string Symbol { get; init; }
+
+    [JsonPropertyName("current_price")]
+    public required decimal CurrentPrice { get; init; }
+
+    [JsonPropertyName("price_change_percentage_24h")]
+    public required decimal PercentChange24h { get; init; }
+
+    [JsonPropertyName("market_cap")]
+    public required decimal MarketCap { get; init; }
+
+    [JsonPropertyName("circulating_supply")]
+    public required decimal? CirculatingSupply { get; init; }
+
+    [JsonPropertyName("total_supply")]
+    public required decimal? TotalSupply { get; init; }
+
+    [JsonPropertyName("market_cap_rank")]
+    public required int MarketCapRank { get; init; }
 }