use axum::Router;
use axum::routing::{delete, get, put};
use sea_orm::{ColumnTrait, EntityTrait, FromQueryResult, QueryFilter};
use std::sync::Arc;
use tokio::sync::Semaphore;
use uuid::Uuid;

use erp_core::error::AppResult;
use erp_core::events::EventBus;
use erp_core::module::{ErpModule, PermissionDescriptor};

use crate::entity::message_subscription;
use crate::handler::{message_handler, sse_handler, subscription_handler, template_handler};

/// 消息中心模块，实现 ErpModule trait。
pub struct MessageModule;

impl MessageModule {
    pub fn new() -> Self {
        Self
    }

    /// 构建需要认证的路由。
    pub fn protected_routes<S>() -> Router<S>
    where
        crate::message_state::MessageState: axum::extract::FromRef<S>,
        S: Clone + Send + Sync + 'static,
    {
        Router::new()
            // 消息路由
            .route(
                "/messages",
                get(message_handler::list_messages).post(message_handler::send_message),
            )
            .route("/messages/unread-count", get(message_handler::unread_count))
            .route("/messages/{id}/read", put(message_handler::mark_read))
            .route("/messages/read-all", put(message_handler::mark_all_read))
            .route("/messages/{id}", delete(message_handler::delete_message))
            // SSE 实时推送
            .route("/messages/stream", get(sse_handler::message_stream))
            // 模板路由
            .route(
                "/message-templates",
                get(template_handler::list_templates).post(template_handler::create_template),
            )
            .route(
                "/message-templates/{id}",
                put(template_handler::update_template).delete(template_handler::delete_template),
            )
            // 订阅偏好路由
            .route(
                "/message-subscriptions",
                get(subscription_handler::get_subscription)
                    .put(subscription_handler::update_subscription),
            )
    }

    /// 启动后台事件监听任务，将工作流事件转化为消息通知。
    ///
    /// 使用 Semaphore 限制最大并发数为 8，防止事件突发时过度消耗资源。
    /// 在 main.rs 中调用，因为需要 db 连接。
    pub fn start_event_listener(db: sea_orm::DatabaseConnection, event_bus: EventBus) {
        let mut rx = event_bus.subscribe();
        let semaphore = Arc::new(Semaphore::new(8));

        tokio::spawn(async move {
            loop {
                match rx.recv().await {
                    Ok(event) => {
                        let db = db.clone();
                        let event_bus = event_bus.clone();
                        let permit = semaphore.clone();

                        // 先获取许可，再 spawn 任务
                        tokio::spawn(async move {
                            let _permit = match permit.acquire().await {
                                Ok(p) => p,
                                Err(_) => {
                                    tracing::warn!("信号量已关闭，跳过工作流事件处理");
                                    return;
                                }
                            };
                            if let Err(e) = handle_workflow_event(&event, &db, &event_bus).await {
                                tracing::warn!(
                                    event_type = %event.event_type,
                                    error = %e,
                                    "Failed to handle workflow event for messages"
                                );
                            }
                        });
                    }
                    Err(tokio::sync::broadcast::error::RecvError::Lagged(n)) => {
                        tracing::warn!(skipped = n, "Event listener lagged, skipping events");
                    }
                    Err(tokio::sync::broadcast::error::RecvError::Closed) => {
                        tracing::info!("Event bus closed, stopping message event listener");
                        break;
                    }
                }
            }
        });
    }
}

impl Default for MessageModule {
    fn default() -> Self {
        Self::new()
    }
}

#[async_trait::async_trait]
impl ErpModule for MessageModule {
    fn name(&self) -> &str {
        "message"
    }

    fn version(&self) -> &str {
        env!("CARGO_PKG_VERSION")
    }

    fn dependencies(&self) -> Vec<&str> {
        vec!["auth"]
    }

    fn register_event_handlers(&self, _bus: &EventBus) {}

    async fn on_tenant_created(
        &self,
        _tenant_id: Uuid,
        _db: &sea_orm::DatabaseConnection,
        _event_bus: &EventBus,
    ) -> AppResult<()> {
        Ok(())
    }

    async fn on_tenant_deleted(
        &self,
        _tenant_id: Uuid,
        _db: &sea_orm::DatabaseConnection,
    ) -> AppResult<()> {
        Ok(())
    }

    fn permissions(&self) -> Vec<PermissionDescriptor> {
        vec![
            PermissionDescriptor {
                code: "message.list".into(),
                name: "查看消息".into(),
                description: "查看消息列表".into(),
                module: "message".into(),
            },
            PermissionDescriptor {
                code: "message.send".into(),
                name: "发送消息".into(),
                description: "发送新消息".into(),
                module: "message".into(),
            },
            PermissionDescriptor {
                code: "message.template.list".into(),
                name: "查看消息模板".into(),
                description: "查看消息模板列表".into(),
                module: "message".into(),
            },
            PermissionDescriptor {
                code: "message.template.create".into(),
                name: "创建消息模板".into(),
                description: "创建消息模板".into(),
                module: "message".into(),
            },
            PermissionDescriptor {
                code: "message.template.manage".into(),
                name: "管理消息模板".into(),
                description: "编辑、删除消息模板".into(),
                module: "message".into(),
            },
        ]
    }

    fn as_any(&self) -> &dyn std::any::Any {
        self
    }
}

/// 检查用户是否启用了 DND（免打扰）且当前时间在 DND 窗口内。
/// 返回 true 表示应该跳过发送。
async fn should_skip_for_dnd(
    tenant_id: Uuid,
    recipient_id: Uuid,
    priority: &str,
    db: &sea_orm::DatabaseConnection,
) -> bool {
    // 紧急消息永远不跳过
    if priority == "urgent" {
        return false;
    }
    let sub = match message_subscription::Entity::find()
        .filter(message_subscription::Column::TenantId.eq(tenant_id))
        .filter(message_subscription::Column::UserId.eq(recipient_id))
        .filter(message_subscription::Column::DeletedAt.is_null())
        .one(db)
        .await
    {
        Ok(Some(s)) => s,
        _ => return false,
    };
    if !sub.dnd_enabled {
        return false;
    }
    let (start, end) = match (sub.dnd_start, sub.dnd_end) {
        (Some(s), Some(e)) => (s, e),
        _ => return false,
    };
    let now = chrono::Local::now();
    let now_time = now.format("%H:%M").to_string();
    is_in_dnd_window(&now_time, &start, &end)
}

/// 判断当前时间是否在 DND 窗口内。支持跨午夜窗口（如 22:00-06:00）。
pub(crate) fn is_in_dnd_window(now_time: &str, start: &str, end: &str) -> bool {
    if start <= end {
        now_time >= start && now_time < end
    } else {
        now_time >= start || now_time < end
    }
}

/// 处理工作流事件，生成对应的消息通知。
async fn handle_workflow_event(
    event: &erp_core::events::DomainEvent,
    db: &sea_orm::DatabaseConnection,
    event_bus: &EventBus,
) -> Result<(), String> {
    match event.event_type.as_str() {
        "process_instance.started" => {
            let instance_id = event
                .payload
                .get("instance_id")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown");
            let starter_id = event.payload.get("started_by").and_then(|v| v.as_str());

            if let Some(starter) = starter_id {
                let recipient = match uuid::Uuid::parse_str(starter) {
                    Ok(id) => id,
                    Err(_) => return Ok(()),
                };
                if should_skip_for_dnd(event.tenant_id, recipient, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    recipient,
                    "流程已启动".to_string(),
                    format!("您的流程实例 {} 已启动执行。", instance_id),
                    "normal",
                    Some("workflow_instance".to_string()),
                    uuid::Uuid::parse_str(instance_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        "task.completed" => {
            let task_id = event
                .payload
                .get("task_id")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown");
            let starter_id = event.payload.get("started_by").and_then(|v| v.as_str());

            if let Some(starter) = starter_id {
                let recipient = match uuid::Uuid::parse_str(starter) {
                    Ok(id) => id,
                    Err(_) => return Ok(()),
                };
                if should_skip_for_dnd(event.tenant_id, recipient, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    recipient,
                    "流程任务已完成".to_string(),
                    format!("流程任务 {} 已完成，请查看。", task_id),
                    "normal",
                    Some("workflow_task".to_string()),
                    uuid::Uuid::parse_str(task_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 预约事件通知
        "appointment.created" => {
            let appointment_id = event
                .payload
                .get("appointment_id")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown");
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "预约已创建".to_string(),
                    format!(
                        "您的新预约 {} 已创建，请等待确认。",
                        &appointment_id[..8.min(appointment_id.len())]
                    ),
                    "normal",
                    Some("appointment".to_string()),
                    uuid::Uuid::parse_str(appointment_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        "appointment.confirmed" => {
            let appointment_id = event
                .payload
                .get("appointment_id")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown");
            let appointment_date = event
                .payload
                .get("appointment_date")
                .and_then(|v| v.as_str())
                .unwrap_or("");
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "important", db).await {
                    return Ok(());
                }
                let date_info = if appointment_date.is_empty() {
                    String::new()
                } else {
                    format!("（{}）", appointment_date)
                };
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "预约已确认".to_string(),
                    format!("您的预约{}已确认，请按时就诊。", date_info),
                    "important",
                    Some("appointment".to_string()),
                    uuid::Uuid::parse_str(appointment_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        "appointment.cancelled" => {
            let appointment_id = event
                .payload
                .get("appointment_id")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown");
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "预约已取消".to_string(),
                    format!(
                        "您的预约 {} 已被取消。",
                        &appointment_id[..8.min(appointment_id.len())]
                    ),
                    "normal",
                    Some("appointment".to_string()),
                    uuid::Uuid::parse_str(appointment_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        "appointment.reminder" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let appointment_date = event
                .payload
                .get("appointment_date")
                .and_then(|v| v.as_str())
                .unwrap_or("明天");
            let time_slot = event
                .payload
                .get("time_slot")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "预约提醒".to_string(),
                    format!(
                        "您明天（{}）有一个预约，时间段：{}，请准时就诊。",
                        appointment_date, time_slot
                    ),
                    "normal",
                    Some("appointment".to_string()),
                    event
                        .payload
                        .get("appointment_id")
                        .and_then(|v| v.as_str())
                        .and_then(|s| uuid::Uuid::parse_str(s).ok()),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        "health_data.critical_alert" => {
            let patient_name = event
                .payload
                .get("patient_name")
                .and_then(|v| v.as_str())
                .unwrap_or("未知患者");
            let alert = event.payload.get("alert");
            let indicator = alert
                .and_then(|a| a.get("indicator"))
                .and_then(|v| v.as_str())
                .unwrap_or("未知指标");
            let value = alert
                .and_then(|a| a.get("value"))
                .map(|v| v.to_string())
                .unwrap_or_else(|| "?".to_string());
            let direction = alert
                .and_then(|a| a.get("direction"))
                .and_then(|v| v.as_str())
                .unwrap_or("high");

            let direction_text = match direction {
                "low" => "偏低",
                _ => "偏高",
            };

            // 通知责任医生（优先）— urgent 不跳过 DND
            if let Some(doctor_uid) = event
                .payload
                .get("doctor_user_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok())
            {
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    doctor_uid,
                    format!("危急值告警：患者 {}", patient_name),
                    format!(
                        "患者 {} 的{}{}（值：{}），请立即关注处理。",
                        patient_name, indicator, direction_text, value
                    ),
                    "urgent",
                    Some("critical_alert".to_string()),
                    Some(event.id),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }

            // 同时通知操作人（录入者）
            if let Some(operator_uid) = event
                .payload
                .get("operator_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok())
            {
                let is_doctor = event
                    .payload
                    .get("doctor_user_id")
                    .and_then(|v| v.as_str())
                    .map(|s| s == operator_uid.to_string())
                    .unwrap_or(false);

                if !is_doctor {
                    if should_skip_for_dnd(event.tenant_id, operator_uid, "important", db).await {
                        return Ok(());
                    }
                    let _ = crate::service::message_service::MessageService::send_system(
                        event.tenant_id,
                        operator_uid,
                        format!("危急值告警：患者 {}", patient_name),
                        format!(
                            "患者 {} 的{}{}（值：{}）已触发危急值告警，已通知责任医生。",
                            patient_name, indicator, direction_text, value
                        ),
                        "important",
                        Some("critical_alert".to_string()),
                        Some(event.id),
                        db,
                        event_bus,
                    )
                    .await
                    .map_err(|e| e.to_string())?;
                }
            }
        }
        "follow_up.overdue" => {
            let task_id = event
                .payload
                .get("task_id")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown");
            let assigned_to = event
                .payload
                .get("assigned_to")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let planned_date = event
                .payload
                .get("planned_date")
                .and_then(|v| v.as_str())
                .unwrap_or("未知日期");
            let patient_name = event
                .payload
                .get("patient_name")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(assignee) = assigned_to {
                if should_skip_for_dnd(event.tenant_id, assignee, "important", db).await {
                    return Ok(());
                }
                let patient_info = if patient_name.is_empty() {
                    String::new()
                } else {
                    format!("（患者：{}）", patient_name)
                };
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    assignee,
                    "随访任务逾期提醒".to_string(),
                    format!(
                        "您的随访任务{}（计划日期：{}）已逾期，请尽快处理。",
                        patient_info, planned_date
                    ),
                    "important",
                    Some("follow_up".to_string()),
                    uuid::Uuid::parse_str(task_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 咨询新消息通知医生
        "consultation.new_message" => {
            let doctor_id = event
                .payload
                .get("doctor_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let patient_name = event
                .payload
                .get("patient_name")
                .and_then(|v| v.as_str())
                .unwrap_or("患者");
            let session_id = event
                .payload
                .get("session_id")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(did) = doctor_id {
                if should_skip_for_dnd(event.tenant_id, did, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    did,
                    format!("新咨询消息 — {}", patient_name),
                    format!("患者 {} 发来了一条咨询消息，请及时回复。", patient_name),
                    "normal",
                    Some("consultation".to_string()),
                    uuid::Uuid::parse_str(session_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 化验报告审核完成通知患者
        "lab_report.reviewed" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let report_type = event
                .payload
                .get("report_type")
                .and_then(|v| v.as_str())
                .unwrap_or("化验报告");
            let report_id = event
                .payload
                .get("report_id")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    format!("{}已审核", report_type),
                    format!("您的{}已由医生审核完成，请查看医生注释。", report_type),
                    "normal",
                    Some("lab_report".to_string()),
                    uuid::Uuid::parse_str(report_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 咨询会话开启通知医生
        "consultation.opened" => {
            let doctor_id = event
                .payload
                .get("doctor_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let patient_name = event
                .payload
                .get("patient_name")
                .and_then(|v| v.as_str())
                .unwrap_or("患者");
            let session_id = event
                .payload
                .get("session_id")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(did) = doctor_id {
                if should_skip_for_dnd(event.tenant_id, did, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    did,
                    format!("新咨询会话 — {}", patient_name),
                    format!("患者 {} 发起了咨询会话，请及时响应。", patient_name),
                    "normal",
                    Some("consultation".to_string()),
                    uuid::Uuid::parse_str(session_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 咨询会话关闭通知患者
        "consultation.closed" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let session_id = event
                .payload
                .get("session_id")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "咨询会话已结束".to_string(),
                    "您的咨询会话已由医生关闭，感谢使用。".to_string(),
                    "normal",
                    Some("consultation".to_string()),
                    uuid::Uuid::parse_str(session_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 随访任务创建通知被分配人
        "follow_up.created" => {
            let assigned_to = event
                .payload
                .get("assigned_to")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let patient_name = event
                .payload
                .get("patient_name")
                .and_then(|v| v.as_str())
                .unwrap_or("");
            let planned_date = event
                .payload
                .get("planned_date")
                .and_then(|v| v.as_str())
                .unwrap_or("未知日期");
            let task_id = event
                .payload
                .get("task_id")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(assignee) = assigned_to {
                if should_skip_for_dnd(event.tenant_id, assignee, "normal", db).await {
                    return Ok(());
                }
                let patient_info = if patient_name.is_empty() {
                    String::new()
                } else {
                    format!("（患者：{}）", patient_name)
                };
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    assignee,
                    format!("新随访任务{}", patient_info),
                    format!(
                        "您被分配了一个随访任务{}，计划日期：{}。",
                        patient_info, planned_date
                    ),
                    "normal",
                    Some("follow_up".to_string()),
                    uuid::Uuid::parse_str(task_id).ok(),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 随访完成通知患者
        "follow_up.completed" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "随访已完成".to_string(),
                    "您的随访任务已完成，感谢配合。".to_string(),
                    "normal",
                    Some("follow_up".to_string()),
                    None,
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 积分获得通知患者
        "points.earned" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let points = event
                .payload
                .get("points")
                .and_then(|v| v.as_i64())
                .unwrap_or(0);
            let reason = event
                .payload
                .get("reason")
                .and_then(|v| v.as_str())
                .unwrap_or("系统奖励");

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "low", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "积分到账".to_string(),
                    format!("您获得了 {} 积分（{}）。", points, reason),
                    "low",
                    Some("points".to_string()),
                    None,
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 积分兑换通知患者
        "points.exchanged" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let product_name = event
                .payload
                .get("product_name")
                .and_then(|v| v.as_str())
                .unwrap_or("商品");

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "兑换成功".to_string(),
                    format!("您已成功兑换「{}」，请留意后续通知。", product_name),
                    "normal",
                    Some("points".to_string()),
                    None,
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 积分过期通知患者
        "points.expired" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let points = event
                .payload
                .get("points")
                .and_then(|v| v.as_i64())
                .unwrap_or(0);

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "low", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "积分过期提醒".to_string(),
                    format!("您有 {} 积分已过期。", points),
                    "low",
                    Some("points".to_string()),
                    None,
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 文章发布通知（暂记录日志，无直接用户推送）
        "article.published" => {
            tracing::info!(
                article_id = %event.payload.get("article_id").and_then(|v| v.as_str()).unwrap_or(""),
                "文章已发布"
            );
        }
        // 文章驳回通知作者
        "article.rejected" => {
            let author_id = event
                .payload
                .get("author_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let title = event
                .payload
                .get("title")
                .and_then(|v| v.as_str())
                .unwrap_or("文章");

            if let Some(aid) = author_id {
                if should_skip_for_dnd(event.tenant_id, aid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    aid,
                    format!("文章未通过审核 — {}", title),
                    format!("您的文章「{}」未通过审核，请修改后重新提交。", title),
                    "normal",
                    Some("article".to_string()),
                    None,
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 患者信息更新通知（审计日志用途）
        "patient.updated" => {
            tracing::info!(
                patient_id = %event.payload.get("patient_id").and_then(|v| v.as_str()).unwrap_or(""),
                "患者信息已更新"
            );
        }
        // AI 分析失败通知医生
        "ai.analysis.failed" => {
            let doctor_id = event
                .payload
                .get("doctor_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let error = event
                .payload
                .get("error")
                .and_then(|v| v.as_str())
                .unwrap_or("未知错误");

            if let Some(did) = doctor_id {
                if should_skip_for_dnd(event.tenant_id, did, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    did,
                    "AI 分析失败".to_string(),
                    format!("AI 分析任务执行失败：{}，请稍后重试。", error),
                    "normal",
                    Some("ai".to_string()),
                    None,
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 化验单上传记录日志
        "lab_report.uploaded" => {
            tracing::info!(
                patient_id = %event.payload.get("patient_id").and_then(|v| v.as_str()).unwrap_or(""),
                "化验单已上传"
            );
        }
        // 日常监测记录日志
        "daily_monitoring.created" => {
            tracing::info!(
                patient_id = %event.payload.get("patient_id").and_then(|v| v.as_str()).unwrap_or(""),
                "日常监测数据已记录"
            );
        }
        // 医生在线状态变更记录日志
        "doctor.online_status_changed" => {
            tracing::info!(
                doctor_id = %event.payload.get("doctor_id").and_then(|v| v.as_str()).unwrap_or(""),
                status = %event.payload.get("status").and_then(|v| v.as_str()).unwrap_or(""),
                "医生在线状态变更"
            );
        }
        // AI Copilot 洞察生成 → 通知主管医生
        "copilot.insight.created" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let severity = event
                .payload
                .get("severity")
                .and_then(|v| v.as_str())
                .unwrap_or("warning");
            let title = event
                .payload
                .get("title")
                .and_then(|v| v.as_str())
                .unwrap_or("AI 健康洞察");

            if let Some(pid) = patient_id {
                // 查询患者的责任医生（通过 follow_up_task 的 assigned_to）
                #[derive(sea_orm::FromQueryResult)]
                struct DoctorRow {
                    assigned_to: uuid::Uuid,
                }
                let doctor: Option<DoctorRow> = DoctorRow::find_by_statement(
                    sea_orm::Statement::from_sql_and_values(
                        sea_orm::DatabaseBackend::Postgres,
                        "SELECT assigned_to FROM follow_up_task WHERE tenant_id = $1 AND patient_id = $2 AND assigned_to IS NOT NULL AND deleted_at IS NULL AND status IN ('pending', 'in_progress') ORDER BY created_at DESC LIMIT 1",
                        [event.tenant_id.into(), pid.into()],
                    ),
                )
                .one(db)
                .await
                .unwrap_or(None);

                if let Some(doc) = doctor {
                    let priority = match severity {
                        "critical" => "urgent",
                        "warning" | "high" => "important",
                        _ => "normal",
                    };
                    if should_skip_for_dnd(event.tenant_id, doc.assigned_to, priority, db).await {
                        return Ok(());
                    }
                    let _ = crate::service::message_service::MessageService::send_system(
                        event.tenant_id,
                        doc.assigned_to,
                        format!("AI 健康洞察：{}", title),
                        format!(
                            "AI 系统检测到患者存在「{}」级别的健康风险，请及时关注。洞察内容：{}",
                            severity, title
                        ),
                        priority,
                        Some("ai_insight".to_string()),
                        Some(event.id),
                        db,
                        event_bus,
                    )
                    .await
                    .map_err(|e| e.to_string())?;
                }
            }
        }
        // 关怀计划激活 — 温暖通知患者
        "care_plan.activated" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "护理计划已启动".to_string(),
                    "您的护理计划已启动，我们将持续关注您的健康状况。如有任何疑问，请随时咨询您的护理团队。".to_string(),
                    "normal",
                    Some("care_plan".to_string()),
                    event.payload.get("plan_id").and_then(|v| v.as_str()).and_then(|s| uuid::Uuid::parse_str(s).ok()),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 关怀计划完成 — 温暖通知患者
        "care_plan.completed" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "normal", db).await {
                    return Ok(());
                }
                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    "护理计划已完成".to_string(),
                    "您的护理计划已完成，感谢您这段时间的配合！我们将继续关注您的健康。"
                        .to_string(),
                    "normal",
                    Some("care_plan".to_string()),
                    event
                        .payload
                        .get("plan_id")
                        .and_then(|v| v.as_str())
                        .and_then(|s| uuid::Uuid::parse_str(s).ok()),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        // 关怀行动执行 — 温暖通知患者（护理项完成、测量数据记录等）
        "care.action.performed" => {
            let patient_id = event
                .payload
                .get("patient_id")
                .and_then(|v| v.as_str())
                .and_then(|s| uuid::Uuid::parse_str(s).ok());
            let action = event
                .payload
                .get("action")
                .and_then(|v| v.as_str())
                .unwrap_or("");

            if let Some(pid) = patient_id {
                if should_skip_for_dnd(event.tenant_id, pid, "low", db).await {
                    return Ok(());
                }

                let (title, body) = match action {
                    "item_completed" => {
                        let item_title = event
                            .payload
                            .get("item_title")
                            .and_then(|v| v.as_str())
                            .unwrap_or("护理项目");
                        (
                            "关怀已送达".to_string(),
                            format!("您的护理团队已完成「{}」，感谢您的配合。", item_title),
                        )
                    }
                    "outcome_measured" => {
                        let metric = event
                            .payload
                            .get("metric")
                            .and_then(|v| v.as_str())
                            .unwrap_or("健康指标");
                        (
                            "健康数据已更新".to_string(),
                            format!("您的{}数据已记录，护理团队正在持续关注。", metric),
                        )
                    }
                    _ => (
                        "关怀已送达".to_string(),
                        "您的护理团队正在关注您的健康状况。".to_string(),
                    ),
                };

                let _ = crate::service::message_service::MessageService::send_system(
                    event.tenant_id,
                    pid,
                    title,
                    body,
                    "low",
                    Some("care_action".to_string()),
                    event
                        .payload
                        .get("plan_id")
                        .and_then(|v| v.as_str())
                        .and_then(|s| uuid::Uuid::parse_str(s).ok()),
                    db,
                    event_bus,
                )
                .await
                .map_err(|e| e.to_string())?;
            }
        }
        _ => {}
    }
    Ok(())
}

#[cfg(test)]
mod tests {
    use super::*;

    // ---- DND 时间窗逻辑 ----

    #[test]
    fn dnd_normal_range_inside() {
        // 09:00-17:00，当前 12:00 → 在窗口内
        assert!(is_in_dnd_window("12:00", "09:00", "17:00"));
    }

    #[test]
    fn dnd_normal_range_before() {
        // 09:00-17:00，当前 08:00 → 不在窗口内
        assert!(!is_in_dnd_window("08:00", "09:00", "17:00"));
    }

    #[test]
    fn dnd_normal_range_after() {
        // 09:00-17:00，当前 18:00 → 不在窗口内
        assert!(!is_in_dnd_window("18:00", "09:00", "17:00"));
    }

    #[test]
    fn dnd_normal_range_at_start() {
        // 09:00-17:00，当前 09:00 → 在窗口内（>= start）
        assert!(is_in_dnd_window("09:00", "09:00", "17:00"));
    }

    #[test]
    fn dnd_normal_range_at_end() {
        // 09:00-17:00，当前 17:00 → 不在窗口内（< end 排除了 end 本身）
        assert!(!is_in_dnd_window("17:00", "09:00", "17:00"));
    }

    #[test]
    fn dnd_cross_midnight_night_time() {
        // 22:00-06:00，当前 23:30 → 在窗口内
        assert!(is_in_dnd_window("23:30", "22:00", "06:00"));
    }

    #[test]
    fn dnd_cross_midnight_early_morning() {
        // 22:00-06:00，当前 03:00 → 在窗口内
        assert!(is_in_dnd_window("03:00", "22:00", "06:00"));
    }

    #[test]
    fn dnd_cross_midnight_daytime() {
        // 22:00-06:00，当前 14:00 → 不在窗口内
        assert!(!is_in_dnd_window("14:00", "22:00", "06:00"));
    }

    #[test]
    fn dnd_cross_midnight_at_start() {
        assert!(is_in_dnd_window("22:00", "22:00", "06:00"));
    }

    #[test]
    fn dnd_cross_midnight_at_end() {
        assert!(!is_in_dnd_window("06:00", "22:00", "06:00"));
    }

    #[test]
    fn dnd_cross_midnight_just_before_end() {
        assert!(is_in_dnd_window("05:59", "22:00", "06:00"));
    }

    #[test]
    fn dnd_same_start_end_always_in() {
        // start == end 意味着 start <= end，所以 now >= start && now < end
        // "00:00" >= "00:00" && "00:00" < "00:00" → false
        assert!(!is_in_dnd_window("00:00", "12:00", "12:00"));
        // "15:00" >= "12:00" && "15:00" < "12:00" → false
        assert!(!is_in_dnd_window("15:00", "12:00", "12:00"));
    }

    #[test]
    fn dnd_single_minute_window() {
        // 23:59-00:00（跨午夜 1 分钟）
        assert!(is_in_dnd_window("23:59", "23:59", "00:00"));
        assert!(!is_in_dnd_window("00:00", "23:59", "00:00"));
    }
}