using GroupService.Domain.Enums;
using GroupService.Domain.Events;
using IM.DomainCommons;

namespace GroupService.Domain.Entities
{
    public class Group : AggregateRootEntity
    {
        /// <summary>
        /// 群聊名称
        /// </summary>
        public string Name { get; private set; } = "新建群聊";

        /// <summary>
        /// 群主
        /// </summary>
        public Guid GroupMaster { get; private set; }

        /// <summary>
        /// 群权限
        /// （0：需管理员同意,1：任意人可加群,2：不允许任何人加入）
        /// </summary>
        public GroupAuthorityType Authority { get; private set; } = GroupAuthorityType.REQUIRE_CONSENT;

        /// <summary>
        /// 全员禁言（false允许发言，true全员禁言）
        /// </summary>
        public bool AllMembersBanned { get; private set; } = false;

        /// <summary>
        /// 群聊状态
        /// (1：正常,2：封禁)
        /// </summary>
        public GroupState Status { get; private set; } = GroupState.Normal;

        /// <summary>
        /// 群公告
        /// </summary>
        public string Announcement { get; private set; } = string.Empty;

        /// <summary>
        /// 群头像
        /// </summary>
        public string? Avatar { get; private set; }
        public long MaxSequenceId { get; private set; } = 0;
        public string LastMessage { get; private set; } = string.Empty;
        public string LastSenderName { get; private set; } = string.Empty;

        private Group() { }

        public Group(Guid groupMaster, string name = "新建群聊")
        {
            Name = name;
            GroupMaster = groupMaster;
            Avatar = $"https://api.dicebear.com/7.x/thumbs/svg?seed={Guid.NewGuid()}";
            AddDomainEvent(new GroupCreateDomainEvent(this));
        }

        public void setAllMembersBanned(bool isBanned)
        {
            if (isBanned == AllMembersBanned) return;

            AllMembersBanned = isBanned;

            AddDomainEvent(new AllMembersBannedDomainEvent(this));
        }

        public void Ban()
        {
            Status = GroupState.Blocked;
            ModificationTime = DateTime.Now;
            AddDomainEvent(new GroupBlockedDomainEvent(this));
        }

        public void Update(string? name, GroupAuthorityType? groupAuthority, string? announcement, string? avatar)
        {
            bool isChanged = false;
            if (name != null)
            {
                Name = name;
                isChanged = true;
            }

            if (groupAuthority != null)
            {
                Authority = groupAuthority.Value;
                isChanged = true;
            }

            if (announcement != null)
            {
                Announcement = announcement;
                isChanged = true;
            }
            if (avatar != null)
            {
                Avatar = avatar;
                isChanged = true;
            }

            if (isChanged)
            {
                ModificationTime = DateTime.Now;
                AddDomainEvent(new GroupUpdateDomainEvent(this));
            }
        }

        public void UpdateLastMsg(long maxSequenceId, string lastMsg, string lastSenderName)
        {
            MaxSequenceId = maxSequenceId;
            LastMessage = lastMsg;
            LastSenderName = lastSenderName;
        }


    }
}