refactor: move GroupAddRemoveResponseService into GroupMemberUtils

(it's not a service)
2021-10-31 01:11:10 -04:00
parent bb8d5dcf12
commit 8d02af7b94
4 changed files with 4 additions and 4 deletions
--- a/PluralKit.Bot/Utils/GroupMemberUtils.cs
+++ b/PluralKit.Bot/Utils/GroupMemberUtils.cs
@@ -0,0 +1,78 @@
+using System;
+
+using PluralKit.Core;
+
+namespace PluralKit.Bot
+{
+    public static class GroupMemberUtils
+    {
+        public static string GenerateResponse(Groups.AddRemoveOperation action, int memberCount, int groupCount, int actionedOn, int notActionedOn)
+        {
+            var op = action;
+
+            var actionStr = action == Groups.AddRemoveOperation.Add ? "added to" : "removed from";
+            var containStr = action == Groups.AddRemoveOperation.Add ? "in" : "not in";
+            var emojiStr = actionedOn > 0 ? Emojis.Success : Emojis.Error;
+
+            var memberPlural = memberCount > 1;
+            var groupPlural = groupCount > 1;
+
+            // sanity checking: we can't add multiple groups to multiple members (at least for now)
+            if (memberPlural && groupPlural)
+                throw new ArgumentOutOfRangeException();
+
+            // sanity checking: we can't act/not act on a different number of entities than we have
+            if (memberPlural && (actionedOn + notActionedOn) != memberCount)
+                throw new ArgumentOutOfRangeException();
+            if (groupPlural && (actionedOn + notActionedOn) != groupCount)
+                throw new ArgumentOutOfRangeException();
+
+            // name generators
+            string MemberString(int count, bool capitalize = false)
+                => capitalize
+                    ? (count == 1 ? "Member" : "Members")
+                    : (count == 1 ? "member" : "members");
+
+            string GroupString(int count)
+                => count == 1 ? "group" : "groups";
+
+            // string generators
+
+            string ResponseString()
+            {
+                if (actionedOn > 0 && notActionedOn > 0 && memberPlural)
+                    return $"{actionedOn} {MemberString(actionedOn)} {actionStr} {GroupString(groupCount)}";
+                if (actionedOn > 0 && notActionedOn > 0 && groupPlural)
+                    return $"{MemberString(memberCount, capitalize: true)} {actionStr} {actionedOn} {GroupString(actionedOn)}";
+                if (notActionedOn == 0)
+                    return $"{MemberString(memberCount, capitalize: true)} {actionStr} {GroupString(groupCount)}";
+                if (actionedOn == 0)
+                    return $"{MemberString(memberCount, capitalize: true)} not {actionStr} {GroupString(groupCount)}";
+
+                throw new ArgumentOutOfRangeException();
+            }
+
+            string InfoMessage()
+            {
+                if (notActionedOn == 0) return $"";
+
+                var msg = "";
+                if (actionedOn > 0 && memberPlural)
+                    msg += $"{notActionedOn} {MemberString(notActionedOn)}";
+                else
+                    msg += $"{MemberString(memberCount)}";
+
+                msg += $" already {containStr}";
+
+                if (actionedOn > 0 && groupPlural)
+                    msg += $" {notActionedOn} {GroupString(notActionedOn)}";
+                else
+                    msg += $" {GroupString(groupCount)}";
+
+                return $" ({msg})";
+            }
+
+            return $"{emojiStr} {ResponseString()}{InfoMessage()}.";
+        }
+    }
+}