using System.Threading.Tasks;
using System.Collections.Generic;
using NPP.SmartSchedue.Api.Contracts.Core.Enums;

namespace NPP.SmartSchedue.Api.Contracts.Services.Notification;

/// <summary>
/// 系统消息服务接口
/// 决策点1：基础通知方式 - 系统消息通知
/// </summary>
public interface ISystemMessageService
{
    #region 单个消息发送
    
    /// <summary>
    /// 发送系统消息
    /// </summary>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <param name="title">消息标题</param>
    /// <param name="content">消息内容</param>
    /// <param name="messageType">消息类型（通知、警告、错误等）</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="businessId">业务ID</param>
    /// <returns></returns>
    Task<bool> SendSystemMessageAsync(
        long recipientPersonnelId,
        string title,
        string content,
        SystemMessageTypeEnum messageType = SystemMessageTypeEnum.Info,
        string businessType = "",
        long? businessId = null);

    /// <summary>
    /// 发送带操作按钮的系统消息
    /// </summary>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <param name="title">消息标题</param>
    /// <param name="content">消息内容</param>
    /// <param name="actions">操作按钮列表</param>
    /// <param name="messageType">消息类型</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="businessId">业务ID</param>
    /// <returns></returns>
    Task<bool> SendSystemMessageWithActionsAsync(
        long recipientPersonnelId,
        string title,
        string content,
        List<SystemMessageAction> actions,
        SystemMessageTypeEnum messageType = SystemMessageTypeEnum.Info,
        string businessType = "",
        long? businessId = null);

    #endregion

    #region 批量消息发送
    
    /// <summary>
    /// 批量发送系统消息
    /// </summary>
    /// <param name="recipientPersonnelIds">接收人员ID列表</param>
    /// <param name="title">消息标题</param>
    /// <param name="content">消息内容</param>
    /// <param name="messageType">消息类型</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="businessId">业务ID</param>
    /// <returns>发送结果，Key为人员ID，Value为是否发送成功</returns>
    Task<Dictionary<long, bool>> BatchSendSystemMessageAsync(
        List<long> recipientPersonnelIds,
        string title,
        string content,
        SystemMessageTypeEnum messageType = SystemMessageTypeEnum.Info,
        string businessType = "",
        long? businessId = null);

    /// <summary>
    /// 个性化批量发送系统消息
    /// 每个收件人可以有不同的消息内容
    /// </summary>
    /// <param name="messageItems">消息项列表</param>
    /// <returns>发送结果，Key为人员ID，Value为是否发送成功</returns>
    Task<Dictionary<long, bool>> BatchSendPersonalizedSystemMessageAsync(List<SystemMessageItem> messageItems);

    #endregion

    #region 消息模板
    
    /// <summary>
    /// 使用模板发送系统消息
    /// </summary>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <param name="titleTemplate">消息标题模板</param>
    /// <param name="contentTemplate">消息内容模板</param>
    /// <param name="variables">模板变量</param>
    /// <param name="messageType">消息类型</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="businessId">业务ID</param>
    /// <returns></returns>
    Task<bool> SendSystemMessageByTemplateAsync(
        long recipientPersonnelId,
        string titleTemplate,
        string contentTemplate,
        Dictionary<string, string> variables,
        SystemMessageTypeEnum messageType = SystemMessageTypeEnum.Info,
        string businessType = "",
        long? businessId = null);

    #endregion

    #region 消息管理
    
    /// <summary>
    /// 标记消息为已读
    /// </summary>
    /// <param name="messageId">消息ID</param>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <returns></returns>
    Task<bool> MarkMessageAsReadAsync(long messageId, long recipientPersonnelId);

    /// <summary>
    /// 批量标记消息为已读
    /// </summary>
    /// <param name="messageIds">消息ID列表</param>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <returns></returns>
    Task<int> BatchMarkMessagesAsReadAsync(List<long> messageIds, long recipientPersonnelId);

    /// <summary>
    /// 删除消息
    /// </summary>
    /// <param name="messageId">消息ID</param>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <returns></returns>
    Task<bool> DeleteMessageAsync(long messageId, long recipientPersonnelId);

    /// <summary>
    /// 获取用户未读消息数量
    /// </summary>
    /// <param name="recipientPersonnelId">接收人员ID</param>
    /// <returns></returns>
    Task<int> GetUnreadMessageCountAsync(long recipientPersonnelId);

    #endregion
}

/// <summary>
/// 系统消息类型枚举
/// </summary>
public enum SystemMessageTypeEnum
{
    /// <summary>
    /// 信息
    /// </summary>
    Info = 1,

    /// <summary>
    /// 成功
    /// </summary>
    Success = 2,

    /// <summary>
    /// 警告
    /// </summary>
    Warning = 3,

    /// <summary>
    /// 错误
    /// </summary>
    Error = 4,

    /// <summary>
    /// 紧急
    /// </summary>
    Urgent = 5
}

/// <summary>
/// 系统消息项
/// </summary>
public class SystemMessageItem
{
    /// <summary>
    /// 接收人员ID
    /// </summary>
    public long RecipientPersonnelId { get; set; }

    /// <summary>
    /// 消息标题
    /// </summary>
    public string Title { get; set; } = "";

    /// <summary>
    /// 消息内容
    /// </summary>
    public string Content { get; set; } = "";

    /// <summary>
    /// 消息类型
    /// </summary>
    public SystemMessageTypeEnum MessageType { get; set; } = SystemMessageTypeEnum.Info;

    /// <summary>
    /// 业务类型
    /// </summary>
    public string BusinessType { get; set; } = "";

    /// <summary>
    /// 业务ID
    /// </summary>
    public long? BusinessId { get; set; }

    /// <summary>
    /// 操作按钮列表
    /// </summary>
    public List<SystemMessageAction> Actions { get; set; } = new List<SystemMessageAction>();

    /// <summary>
    /// 个性化变量
    /// </summary>
    public Dictionary<string, string> Variables { get; set; } = new Dictionary<string, string>();
}

/// <summary>
/// 系统消息操作按钮
/// </summary>
public class SystemMessageAction
{
    /// <summary>
    /// 操作ID
    /// </summary>
    public string ActionId { get; set; } = "";

    /// <summary>
    /// 操作名称
    /// </summary>
    public string ActionName { get; set; } = "";

    /// <summary>
    /// 操作URL
    /// </summary>
    public string ActionUrl { get; set; } = "";

    /// <summary>
    /// 操作类型（按钮、链接等）
    /// </summary>
    public string ActionType { get; set; } = "button";

    /// <summary>
    /// 是否主要操作
    /// </summary>
    public bool IsPrimary { get; set; } = false;
}