# IoT + FHIR V1 Plan 1: 数据层增强

> **For agentic workers:** REQUIRED: Use superpowers:subagent-driven-development (if subagents available) or superpowers:executing-plans to implement this plan. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** 新增 vital_signs_daily 日聚合表、增强 patient_devices 表字段、实现日聚合 background task，为 FHIR API 和监控看板提供数据基础。

**Architecture:** 在现有 erp-health 模块内扩展。新增 SeaORM Entity + Migration 对应日聚合表；为 patient_devices 添加迁移扩展列；日聚合任务复用现有 `tokio::spawn` + interval 模式，从 vital_signs_hourly 聚合为日级数据。

**Tech Stack:** Rust / SeaORM / PostgreSQL / tokio / Axum

**Spec:** `docs/superpowers/specs/2026-05-04-iot-fhir-platform-ecosystem-design.md` §3

---

## Chunk 1: vital_signs_daily 表 + Entity

### Task 1: 日聚合表迁移

**Files:**
- Create: `crates/erp-server/migration/src/m20260504_000105_create_vital_signs_daily.rs`
- Modify: `crates/erp-server/migration/src/lib.rs`

- [ ] **Step 1: 创建迁移文件**

```rust
// crates/erp-server/migration/src/m20260504_000105_create_vital_signs_daily.rs
use sea_orm_migration::prelude::*;

#[derive(DeriveMigrationName)]
pub struct Migration;

#[async_trait::async_trait]
impl MigrationTrait for Migration {
    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .create_table(
                Table::create()
                    .table(Alias::new("vital_signs_daily"))
                    .col(
                        ColumnDef::new(Alias::new("id"))
                            .uuid()
                            .not_null()
                            .default(Expr::val("gen_random_uuid()")),
                    )
                    .col(ColumnDef::new(Alias::new("tenant_id")).uuid().not_null())
                    .col(ColumnDef::new(Alias::new("patient_id")).uuid().not_null())
                    .col(ColumnDef::new(Alias::new("device_type")).string().not_null())
                    .col(ColumnDef::new(Alias::new("date_bucket")).date().not_null())
                    .col(ColumnDef::new(Alias::new("min_val")).double())
                    .col(ColumnDef::new(Alias::new("max_val")).double())
                    .col(ColumnDef::new(Alias::new("avg_val")).double().not_null())
                    .col(ColumnDef::new(Alias::new("sample_count")).integer().not_null())
                    .col(ColumnDef::new(Alias::new("percentile_95")).double())
                    .col(
                        ColumnDef::new(Alias::new("created_at"))
                            .timestamp_with_time_zone()
                            .not_null()
                            .default(Expr::val("NOW()")),
                    )
                    .col(
                        ColumnDef::new(Alias::new("updated_at"))
                            .timestamp_with_time_zone()
                            .not_null()
                            .default(Expr::val("NOW()")),
                    )
                    .col(
                        ColumnDef::new(Alias::new("version"))
                            .integer()
                            .not_null()
                            .default(1),
                    )
                    .primary_key(Index::create().col(Alias::new("id")))
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .name("idx_vital_signs_daily_unique")
                    .table(Alias::new("vital_signs_daily"))
                    .col(Alias::new("tenant_id"))
                    .col(Alias::new("patient_id"))
                    .col(Alias::new("device_type"))
                    .col(Alias::new("date_bucket"))
                    .unique()
                    .to_owned(),
            )
            .await?;

        Ok(())
    }

    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .drop_table(Table::drop().table(Alias::new("vital_signs_daily")).to_owned())
            .await
    }
}
```

- [ ] **Step 2: 注册迁移**

在 `crates/erp-server/migration/src/lib.rs` 顶部添加：
```rust
mod m20260504_000105_create_vital_signs_daily;
```

在 `Migrator::migrations()` 的 `vec![]` 末尾追加：
```rust
Box::new(m20260504_000105_create_vital_signs_daily::Migration),
```

- [ ] **Step 3: 验证迁移编译**

Run: `cargo check -p erp-server`
Expected: 编译通过，无错误

- [ ] **Step 4: Commit**

```bash
git add crates/erp-server/migration/src/m20260504_000105_create_vital_signs_daily.rs crates/erp-server/migration/src/lib.rs
git commit -m "feat(db): 新增 vital_signs_daily 日聚合表迁移"
```

---

### Task 2: 日聚合 Entity

**Files:**
- Create: `crates/erp-health/src/entity/vital_signs_daily.rs`
- Modify: `crates/erp-health/src/entity/mod.rs`

- [ ] **Step 1: 创建 Entity 文件**

参考 `vital_signs_hourly.rs` 的结构，创建 `vital_signs_daily.rs`：

```rust
use sea_orm::entity::prelude::*;
use serde::{Deserialize, Serialize};

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
#[sea_orm(table_name = "vital_signs_daily")]
pub struct Model {
    #[sea_orm(primary_key, auto_increment = false)]
    pub id: Uuid,
    pub tenant_id: Uuid,
    pub patient_id: Uuid,
    pub device_type: String,
    pub date_bucket: chrono::NaiveDate,
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub min_val: Option<f64>,
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub max_val: Option<f64>,
    pub avg_val: f64,
    pub sample_count: i32,
    #[sea_orm(skip_serializing_if = "Option::is_none")]
    pub percentile_95: Option<f64>,
    pub created_at: DateTimeUtc,
    pub updated_at: DateTimeUtc,
    pub version: i32,
}

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
pub enum Relation {
    #[sea_orm(
        belongs_to = "super::patient::Entity",
        from = "Column::PatientId",
        to = "super::patient::Column::Id"
    )]
    Patient,
}

impl Related<super::patient::Entity> for Entity {
    fn to() -> RelationDef {
        Relation::Patient.def()
    }
    fn via() -> Option<RelationDef> {
        None
    }
}

impl ActiveModelBehavior for ActiveModel {}
```

- [ ] **Step 2: 注册 Entity 模块**

在 `crates/erp-health/src/entity/mod.rs` 添加：
```rust
pub mod vital_signs_daily;
```

- [ ] **Step 3: 验证编译**

Run: `cargo check -p erp-health`
Expected: 编译通过

- [ ] **Step 4: Commit**

```bash
git add crates/erp-health/src/entity/vital_signs_daily.rs crates/erp-health/src/entity/mod.rs
git commit -m "feat(health): 新增 VitalSignsDaily SeaORM Entity"
```

---

### Task 3: 日聚合 Service 函数

**Files:**
- Create: `crates/erp-health/src/service/vital_signs_daily_service.rs`
- Modify: `crates/erp-health/src/service/mod.rs`

- [ ] **Step 1: 编写日聚合 service 单元测试**

```rust
// 文件末尾的 tests 模块
#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_build_daily_agg_query_basic() {
        // 验证聚合查询构建器产生正确的 SQL 片段
        let query = build_daily_agg_query(Uuid::new_v4(), chrono::NaiveDate::from_ymd_opt(2026, 5, 4).unwrap());
        assert!(query.contains("vital_signs_hourly"));
        assert!(query.contains("date_bucket"));
    }

    #[test]
    fn test_calculate_percentile_95() {
        let values = vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0];
        let p95 = calculate_percentile(&values, 95.0);
        assert!(p95 > 9.0 && p95 <= 10.0);
    }
}
```

- [ ] **Step 2: 运行测试验证失败**

Run: `cargo test -p erp-health vital_signs_daily`
Expected: 编译失败（函数未定义）

- [ ] **Step 3: 实现 service**

```rust
use chrono::NaiveDate;
use sea_orm::*;
use uuid::Uuid;

use crate::entity::vital_signs_daily;
use crate::error::HealthResult;

/// 从 vital_signs_hourly 聚合指定日期的数据到 vital_signs_daily
pub async fn aggregate_daily(
    db: &DatabaseConnection,
    tenant_id: Uuid,
    date: NaiveDate,
) -> HealthResult<u64> {
    let start_of_day = date.and_hms_opt(0, 0, 0).unwrap().and_utc();
    let end_of_day = date.and_hms_opt(23, 59, 59).unwrap().and_utc();

    // 查询当天所有小时聚合数据
    let hourly_rows = entity::vital_signs_hourly::Entity::find()
        .filter(entity::vital_signs_hourly::Column::TenantId.eq(tenant_id))
        .filter(entity::vital_signs_hourly::Column::HourStart.gte(start_of_day))
        .filter(entity::vital_signs_hourly::Column::HourStart.lte(end_of_day))
        .all(db)
        .await?;

    // 按 (patient_id, device_type) 分组聚合
    let mut grouped: std::collections::HashMap<(Uuid, String), Vec<&_>> = std::collections::HashMap::new();
    for row in &hourly_rows {
        let key = (row.patient_id, row.device_type.clone());
        grouped.entry(key).or_default().push(row);
    }

    let mut upserted = 0u64;
    for ((patient_id, device_type), rows) in grouped {
        let avg_val = rows.iter().map(|r| r.avg_val).sum::<f64>() / rows.len() as f64;
        let min_val = rows.iter().filter_map(|r| r.min_val).reduce(f64::min);
        let max_val = rows.iter().filter_map(|r| r.max_val).reduce(f64::max);
        let sample_count: i32 = rows.iter().map(|r| r.sample_count).sum();
        let all_avgs: Vec<f64> = rows.iter().map(|r| r.avg_val).collect();
        let percentile_95 = if all_avgs.len() >= 2 {
            Some(calculate_percentile(&all_avgs, 95.0))
        } else {
            None
        };

        // Upsert: ON CONFLICT UPDATE
        let result = vital_signs_daily::Entity::insert(
            vital_signs_daily::ActiveModel {
                id: Set(Uuid::now_v7()),
                tenant_id: Set(tenant_id),
                patient_id: Set(patient_id),
                device_type: Set(device_type),
                date_bucket: Set(date),
                min_val: Set(min_val),
                max_val: Set(max_val),
                avg_val: Set(avg_val),
                sample_count: Set(sample_count),
                percentile_95: Set(percentile_95),
                created_at: Set(chrono::Utc::now()),
                updated_at: Set(chrono::Utc::now()),
                version: Set(1),
            },
        )
        .on_conflict(
            sea_orm::sea_query::OnConflict::columns([
                vital_signs_daily::Column::TenantId,
                vital_signs_daily::Column::PatientId,
                vital_signs_daily::Column::DeviceType,
                vital_signs_daily::Column::DateBucket,
            ])
            .update_columns([
                vital_signs_daily::Column::MinVal,
                vital_signs_daily::Column::MaxVal,
                vital_signs_daily::Column::AvgVal,
                vital_signs_daily::Column::SampleCount,
                vital_signs_daily::Column::Percentile95,
                vital_signs_daily::Column::UpdatedAt,
            ])
            .to_owned(),
        )
        .exec(db)
        .await?;

        upserted += result.last_insert_id as u64;
    }

    Ok(upserted)
}

/// 计算百分位数
fn calculate_percentile(values: &[f64], percentile: f64) -> f64 {
    let mut sorted = values.to_vec();
    sorted.sort_by(|a, b| a.partial_cmp(b).unwrap());
    let idx = (percentile / 100.0 * (sorted.len() - 1) as f64).ceil() as usize;
    sorted[idx.min(sorted.len() - 1)]
}

/// 查询日聚合数据
pub async fn query_daily(
    db: &DatabaseConnection,
    tenant_id: Uuid,
    patient_id: Option<Uuid>,
    device_type: Option<String>,
    start_date: NaiveDate,
    end_date: NaiveDate,
) -> HealthResult<Vec<vital_signs_daily::Model>> {
    let mut query = vital_signs_daily::Entity::find()
        .filter(vital_signs_daily::Column::TenantId.eq(tenant_id))
        .filter(vital_signs_daily::Column::DateBucket.gte(start_date))
        .filter(vital_signs_daily::Column::DateBucket.lte(end_date));

    if let Some(pid) = patient_id {
        query = query.filter(vital_signs_daily::Column::PatientId.eq(pid));
    }
    if let Some(dt) = device_type {
        query = query.filter(vital_signs_daily::Column::DeviceType.eq(dt));
    }

    let results = query.all(db).await?;
    Ok(results)
}
```

- [ ] **Step 4: 注册 service 模块**

在 `crates/erp-health/src/service/mod.rs` 添加：
```rust
pub mod vital_signs_daily_service;
```

- [ ] **Step 5: 验证编译 + 测试通过**

Run: `cargo test -p erp-health vital_signs_daily`
Expected: 测试通过

- [ ] **Step 6: Commit**

```bash
git add crates/erp-health/src/service/vital_signs_daily_service.rs crates/erp-health/src/service/mod.rs
git commit -m "feat(health): 日聚合 service — 从 hourly 聚合到 daily"
```

---

## Chunk 2: patient_devices 表增强

### Task 4: patient_devices 迁移（新增列）

**Files:**
- Create: `crates/erp-server/migration/src/m20260504_000106_alter_patient_devices_add_status.rs`
- Modify: `crates/erp-server/migration/src/lib.rs`

- [ ] **Step 1: 创建迁移文件**

```rust
use sea_orm_migration::prelude::*;

#[derive(DeriveMigrationName)]
pub struct Migration;

#[async_trait::async_trait]
impl MigrationTrait for Migration {
    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .alter_table(
                Table::alter()
                    .table(Alias::new("patient_devices"))
                    .add_column(ColumnDef::new(Alias::new("status")).string().not_null().default("active"))
                    .add_column(ColumnDef::new(Alias::new("firmware_version")).string())
                    .add_column(ColumnDef::new(Alias::new("manufacturer")).string())
                    .add_column(ColumnDef::new(Alias::new("connection_type")).string().not_null().default("ble"))
                    .add_column(ColumnDef::new(Alias::new("metadata")).json_binary())
                    .to_owned(),
            )
            .await
    }

    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .alter_table(
                Table::alter()
                    .table(Alias::new("patient_devices"))
                    .drop_column(Alias::new("status"))
                    .drop_column(Alias::new("firmware_version"))
                    .drop_column(Alias::new("manufacturer"))
                    .drop_column(Alias::new("connection_type"))
                    .drop_column(Alias::new("metadata"))
                    .to_owned(),
            )
            .await
    }
}
```

- [ ] **Step 2: 注册迁移**

在 `lib.rs` 添加 `mod m20260504_000106_alter_patient_devices_add_status;` 并在 migrations vec 末尾追加对应 `Box::new(...)`。

- [ ] **Step 3: 更新 Entity**

在 `crates/erp-health/src/entity/patient_devices.rs` 的 `Model` struct 中添加字段：

```rust
pub status: String,
#[sea_orm(skip_serializing_if = "Option::is_none")]
pub firmware_version: Option<String>,
#[sea_orm(skip_serializing_if = "Option::is_none")]
pub manufacturer: Option<String>,
pub connection_type: String,
#[sea_orm(skip_serializing_if = "Option::is_none")]
pub metadata: Option<serde_json::Value>,
```

- [ ] **Step 4: 验证编译**

Run: `cargo check -p erp-health`
Expected: 编译通过

- [ ] **Step 5: Commit**

```bash
git add crates/erp-server/migration/src/m20260504_000106_alter_patient_devices_add_status.rs crates/erp-server/migration/src/lib.rs crates/erp-health/src/entity/patient_devices.rs
git commit -m "feat(health): patient_devices 增强 — status/firmware/manufacturer/connection_type/metadata"
```

---

## Chunk 3: 日聚合 Background Task

### Task 5: 日聚合定时任务

**Files:**
- Modify: `crates/erp-health/src/module.rs`

- [ ] **Step 1: 添加 start_daily_aggregation 任务**

参考现有 `start_overdue_checker` 模式，在 `module.rs` 中添加：

```rust
pub fn start_daily_aggregation(db: sea_orm::DatabaseConnection) -> tokio::task::JoinHandle<()> {
    tokio::spawn(async move {
        // 每天凌晨 2:00 执行（用 interval 模拟：每 24 小时）
        let mut interval = tokio::time::interval(Duration::from_secs(24 * 3600));

        loop {
            tokio::select! {
                _ = interval.tick() => {
                    let yesterday = chrono::Local::now().date_naive() - chrono::Duration::days(1);
                    // TODO: 遍历所有租户，对每个租户调用 aggregate_daily
                    // 当前单租户阶段，使用配置的默认租户 ID
                    tracing::info!(date = %yesterday, "Running daily aggregation");
                    if let Err(e) = vital_signs_daily_service::aggregate_daily_for_all_tenants(&db, yesterday).await {
                        tracing::warn!(error = %e, "Daily aggregation task failed");
                    }
                }
                _ = tokio::signal::ctrl_c() => {
                    break;
                }
            }
        }
    })
}
```

- [ ] **Step 2: 添加 aggregate_daily_for_all_tenants 辅助函数**

在 `vital_signs_daily_service.rs` 中添加：

```rust
/// 遍历所有租户执行日聚合
pub async fn aggregate_daily_for_all_tenants(
    db: &DatabaseConnection,
    date: NaiveDate,
) -> HealthResult<u64> {
    // 查询有 hourly 数据的活跃租户
    let tenant_ids: Vec<Uuid> = entity::vital_signs_hourly::Entity::find()
        .filter(entity::vital_signs_hourly::Column::HourStart.gte(
            date.and_hms_opt(0, 0, 0).unwrap().and_utc(),
        ))
        .filter(entity::vital_signs_hourly::Column::HourStart.lte(
            date.and_hms_opt(23, 59, 59).unwrap().and_utc(),
        ))
        .all(db)
        .await?
        .iter()
        .map(|r| r.tenant_id)
        .collect::<std::collections::HashSet<_>>()
        .into_iter()
        .collect();

    let mut total = 0u64;
    for tenant_id in tenant_ids {
        total += aggregate_daily(db, tenant_id, date).await?;
    }
    Ok(total)
}
```

- [ ] **Step 3: 在 on_startup 中启动任务**

在 `HealthModule` 的 `on_startup()` 方法中追加：

```rust
Self::start_daily_aggregation(state.db.clone());
```

- [ ] **Step 4: 验证编译**

Run: `cargo check -p erp-health`
Expected: 编译通过

- [ ] **Step 5: Commit**

```bash
git add crates/erp-health/src/service/vital_signs_daily_service.rs crates/erp-health/src/module.rs
git commit -m "feat(health): 日聚合 background task — 每天自动从 hourly 聚合到 daily"
```

---

## Chunk 4: 日聚合查询 API

### Task 6: 日聚合查询 Handler + 路由

**Files:**
- Create: `crates/erp-health/src/handler/vital_signs_daily_handler.rs`
- Modify: `crates/erp-health/src/handler/mod.rs`
- Modify: `crates/erp-health/src/module.rs`（路由注册）

- [ ] **Step 1: 创建查询 DTO**

```rust
use serde::Deserialize;
use utoipa::IntoParams;

#[derive(Debug, Deserialize, IntoParams)]
pub struct DailyAggQuery {
    pub patient_id: Option<uuid::Uuid>,
    pub device_type: Option<String>,
    pub start_date: String,  // YYYY-MM-DD
    pub end_date: String,    // YYYY-MM-DD
}
```

- [ ] **Step 2: 创建 Handler**

```rust
pub async fn get_daily_aggregations<S>(
    State(state): State<HealthState>,
    Extension(ctx): Extension<TenantContext>,
    Query(query): Query<DailyAggQuery>,
) -> Result<impl IntoResponse, AppError>
where
    HealthState: FromRef<S>,
    S: Clone + Send + Sync + 'static,
{
    require_permission(&ctx, "health.device-readings.list")?;

    let start = query.start_date.parse::<chrono::NaiveDate>()
        .map_err(|_| HealthError::Validation("Invalid start_date format, expected YYYY-MM-DD".into()))?;
    let end = query.end_date.parse::<chrono::NaiveDate>()
        .map_err(|_| HealthError::Validation("Invalid end_date format, expected YYYY-MM-DD".into()))?;

    let results = vital_signs_daily_service::query_daily(
        &state.db, ctx.tenant_id, query.patient_id, query.device_type, start, end,
    ).await?;

    Ok(axum::Json(ApiResponse::ok(results)))
}
```

- [ ] **Step 3: 注册 handler 模块和路由**

在 `handler/mod.rs` 添加 `pub mod vital_signs_daily_handler;`

在 `module.rs` 的 `protected_routes()` 中追加路由：

```rust
.route("/health/vital-signs/daily", axum::routing::get(vital_signs_daily_handler::get_daily_aggregations))
```

- [ ] **Step 4: 验证编译**

Run: `cargo check -p erp-health`
Expected: 编译通过

- [ ] **Step 5: 运行全量测试**

Run: `cargo test --workspace`
Expected: 全部通过

- [ ] **Step 6: Commit**

```bash
git add crates/erp-health/src/handler/vital_signs_daily_handler.rs crates/erp-health/src/handler/mod.rs crates/erp-health/src/module.rs
git commit -m "feat(health): 日聚合查询 API — GET /health/vital-signs/daily"
```

---

## 验证清单

- [ ] `cargo check --workspace` — 编译通过
- [ ] `cargo test --workspace` — 全部测试通过
- [ ] 数据库迁移可正/反向执行
- [ ] 日聚合 background task 可手动触发验证
- [ ] GET `/api/v1/health/vital-signs/daily` 返回正确的聚合数据
- [ ] `git push` 推送到远程仓库