// Admin.NET 项目的版权、商标、专利和其他相关权利均受相应法律法规的保护。使用本项目应遵守相关法律法规和许可证的要求。
//
// 本项目主要遵循 MIT 许可证和 Apache 许可证（版本 2.0）进行分发和使用。许可证位于源代码树根目录中的 LICENSE-MIT 和 LICENSE-APACHE 文件。
//
// 不得利用本项目从事危害国家安全、扰乱社会秩序、侵犯他人合法权益等法律法规禁止的活动！任何基于本项目二次开发而产生的一切法律纠纷和责任，我们不承担任何责任！

using Microsoft.AspNetCore.SignalR;

namespace Admin.NET.Core.Service;

/// <summary>
/// 系统消息发送服务 🧩
/// </summary>
[ApiDescriptionSettings(Order = 370, Description = "消息发送")]
public class SysMessageService : IDynamicApiController, ITransient
{
    private readonly SysCacheService _sysCacheService;
    private readonly IEventPublisher _eventPublisher;
    private readonly IHubContext<OnlineUserHub, IOnlineUserHub> _chatHubContext;

    public SysMessageService(SysCacheService sysCacheService,
        IEventPublisher eventPublisher,
        IHubContext<OnlineUserHub, IOnlineUserHub> chatHubContext)
    {
        _sysCacheService = sysCacheService;
        _eventPublisher = eventPublisher;
        _chatHubContext = chatHubContext;
    }

    /// <summary>
    /// 发送消息给所有人 🔖
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("发送消息给所有人")]
    public async Task SendAllUser(MessageInput input)
    {
        await _chatHubContext.Clients.All.ReceiveMessage(input);
    }

    /// <summary>
    /// 发送消息给除了发送人的其他人 🔖
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("发送消息给除了发送人的其他人")]
    public async Task SendOtherUser(MessageInput input)
    {
        var hashKey = _sysCacheService.HashGetAll<SysOnlineUser>(CacheConst.KeyUserOnline);
        var exceptReceiveUsers = hashKey.Where(u => u.Value.UserId == input.ReceiveUserId).Select(u => u.Value).ToList();
        await _chatHubContext.Clients.AllExcept(exceptReceiveUsers.Select(t => t.ConnectionId)).ReceiveMessage(input);
    }

    /// <summary>
    /// 发送消息给某个人 🔖
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("发送消息给某个人")]
    public async Task SendUser(MessageInput input)
    {
        var sysLogMsg = await SaveMsgLog(input);

        var hashKey = _sysCacheService.HashGetAll<SysOnlineUser>(CacheConst.KeyUserOnline);
        var receiveUser = hashKey.Where(u => u.Value.UserId == input.ReceiveUserId).Select(u => u.Value).FirstOrDefault();
        await _chatHubContext.Clients.Client(receiveUser.ConnectionId ?? "").ReceiveMessage(sysLogMsg);
    }

    /// <summary>
    /// 发送消息给某些人 🔖
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [DisplayName("发送消息给某些人")]
    public async Task SendUsers(MessageInput input)
    {
        var hashKey = _sysCacheService.HashGetAll<SysOnlineUser>(CacheConst.KeyUserOnline);
        var receiveUsers = hashKey.Where(u => input.UserIds.Any(a => a == u.Value.UserId)).Select(u => u.Value).ToList();
        await receiveUsers.ForEachAsync(u => _chatHubContext.Clients.Client(u.ConnectionId ?? "").ReceiveMessage(input));
    }

    /// <summary>
    /// 记录消息日志
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    private async Task<SysLogMsg> SaveMsgLog(MessageInput input)
    {
        var hashKey = _sysCacheService.HashGetAll<SysOnlineUser>(CacheConst.KeyUserOnline);
        var receiveUser = hashKey.Where(u => u.Value.UserId == input.ReceiveUserId).Select(u => u.Value).FirstOrDefault();
        var sendUser = hashKey.Where(u => u.Value.UserId == input.SendUserId).Select(u => u.Value).FirstOrDefault();

        var sysLogMsg = new SysLogMsg
        {
            Title = input.Title,
            Message = input.Message,
            ReceiveUserId = receiveUser.UserId,
            ReceiveUserName = receiveUser.RealName + "/" + receiveUser.UserName,
            ReceiveIp = receiveUser.Ip,
            ReceiveBrowser = receiveUser.Browser,
            ReceiveOs = receiveUser.Os,
            ReceiveDevice = receiveUser.Device,
            SendUserId = sendUser.UserId,
            SendUserName = sendUser.RealName + "/" + sendUser.UserName,
            SendIp = sendUser.Ip,
            SendBrowser = sendUser.Browser,
            SendOs = sendUser.Os,
            SendDevice = sendUser.Device,
            SendTime = DateTime.Now
        };
        await _eventPublisher.PublishAsync(CommonConst.AddMsgLog, sysLogMsg);
        return sysLogMsg;
    }
}