using System;

namespace PluralKit.Core
{
    public enum SystemPrivacySubject
    {
        Description,
        MemberList,
        GroupList,
        Front,
        FrontHistory
    }

    public static class SystemPrivacyUtils
    {
        public static SystemPatch WithPrivacy(this SystemPatch system, SystemPrivacySubject subject, PrivacyLevel level)
        {
            // what do you mean switch expressions can't be statements >.>
            _ = subject switch
            {
                SystemPrivacySubject.Description => system.DescriptionPrivacy = level,
                SystemPrivacySubject.Front => system.FrontPrivacy = level,
                SystemPrivacySubject.FrontHistory => system.FrontHistoryPrivacy = level,
                SystemPrivacySubject.MemberList => system.MemberListPrivacy = level,
                SystemPrivacySubject.GroupList => system.GroupListPrivacy = level,
                _ => throw new ArgumentOutOfRangeException($"Unknown privacy subject {subject}")
            };

            return system;
        }

        public static SystemPatch WithAllPrivacy(this SystemPatch system, PrivacyLevel level)
        {
            foreach (var subject in Enum.GetValues(typeof(SystemPrivacySubject)))
                WithPrivacy(system, (SystemPrivacySubject)subject, level);
            return system;
        }

        public static bool TryParseSystemPrivacy(string input, out SystemPrivacySubject subject)
        {
            switch (input.ToLowerInvariant())
            {
                case "description":
                case "desc":
                case "text":
                case "info":
                    subject = SystemPrivacySubject.Description;
                    break;
                case "members":
                case "memberlist":
                case "list":
                case "mlist":
                    subject = SystemPrivacySubject.MemberList;
                    break;
                case "fronter":
                case "fronters":
                case "front":
                    subject = SystemPrivacySubject.Front;
                    break;
                case "switch":
                case "switches":
                case "fronthistory":
                case "fh":
                    subject = SystemPrivacySubject.FrontHistory;
                    break;
                case "groups":
                case "gs":
                    subject = SystemPrivacySubject.GroupList;
                    break;
                default:
                    subject = default;
                    return false;
            }
            return true;
        }
    }
}