feat: hug command

Sources/zundamon/Actions.swift

@@ -0,0 +1,66 @@
+import DiscordBM
+
+struct Actions {
+    static func getUserFromMention(_ mention: MentionUser) -> String {
+        mention.member?.nick ?? mention.global_name ?? mention.username
+    }
+
+    static let hugRes = (try? String(contentsOfFile: "choices/hug.txt", encoding: .utf8))?
+        .split(separator: "\n")
+        .map({ $0.trimmingCharacters(in: .whitespacesAndNewlines) })
+
+    static func hug(
+        _ args: ArraySlice<String.SubSequence>,
+        client: DiscordClient,
+        ctx: Gateway.MessageCreate
+    ) async throws {
+        guard let hugRes = hugRes else { print("hug.txt not loaded"); return }
+        let author = "**\(ctx.member?.nick ?? ctx.author?.global_name ?? ctx.author?.username ?? "Zundamon")**"
+        let dests = ctx.mentions.map(getUserFromMention).map({ "**\($0)**" })
+
+        let retMsg: String
+
+        if dests.count > 1 {
+            let groupHugs = [
+                "{subjects} all huddled together.",
+                "{subjects} hugged each other pairwise, generating a total of **{total}** hugs.",
+                "{subjects} hugged each other at the same time in the same place (although I'm not sure how that works with the current understanding of spacetime).",
+            ]
+
+            let group = [author] + dests
+            let total = String(group.count)
+            let subjects = String(group.joined(by: ", "))
+
+            guard let res = groupHugs.randomElement()?
+                .replacingOccurrences(of: "{subjects}", with: subjects)
+                .replacingOccurrences(of: "{total}", with: total)
+            else { print("groupHugs.randomElement() returned null"); return }
+
+            retMsg = res
+        } else {
+            let orig: String
+            let dest: String
+            if let firstDest = dests.first {
+                orig = "**\(author)**"
+                dest = "**\(firstDest)**"
+            } else {
+                orig = "**Zundamon**"
+                dest = "**\(author)**"
+            }
+
+            guard let res = hugRes.randomElement()?
+                .replacingOccurrences(of: "{orig}", with: orig)
+                .replacingOccurrences(of: "{dest}", with: dest)
+            else { print("hug.txt empty"); return }
+
+            retMsg = res
+        }
+
+        try await client.createMessage(
+            channelId: ctx.channel_id,
+            payload: .init(
+                embeds: [.init(description: retMsg)],
+            )
+        ).guardSuccess()
+    }
+}

Sources/zundamon/MessageHandler.swift

@@ -19,6 +19,7 @@ struct MessageHandler {
             switch command {
                 case "wow": try await handleWow(args)
                 case "domath": try await Wolfram.handleMath(args, client: client, ctx: ctx)
+                case "hug": try await Actions.hug(args, client: client, ctx: ctx)
                 default: break
             }
         } else if ctx.mentions.contains(where: { $0.id == Zundamon.ownID }) {