feat(backend): dose scheduling + health stats zero-knowledge

Backend changes (frontend + tests follow in next commit):

Dose scheduling:
- New DoseSchedule struct (times_per_day + days_of_week) as a top-level
  plaintext field on Medication. Create/update requests accept it.
- Revised get_adherence: computes scheduled_doses from the schedule over the
  period (days_of_week filtering), so missed doses are now reflected.
  Falls back to taken/total_logged when no schedule.

Health stats zero-knowledge:
- HealthStatistic model now uses opaque encrypted_data blob (like medications).
  Only recorded_at stays plaintext (filterable/sortable).
- HealthStatResponse wire type. Handlers echo opaque blobs.
- Removed the trends endpoint (server can't compute trends on ciphertext;
  frontend computes them client-side after decrypting).
- Deleted the dead HealthData model (kept EncryptedField which it defined).

Verified: backend 24 tests, 0 clippy warnings.

backend/src/app.rs

@@ -72,7 +72,6 @@ pub fn build_app(state: AppState) -> Router {
         // Health statistics management (Phase 2.7)
         .route("/api/health-stats", post(handlers::create_health_stat))
         .route("/api/health-stats", get(handlers::list_health_stats))
-        .route("/api/health-stats/trends", get(handlers::get_health_trends))
         .route("/api/health-stats/:id", get(handlers::get_health_stat))
         .route("/api/health-stats/:id", put(handlers::update_health_stat))
         .route("/api/health-stats/:id", delete(handlers::delete_health_stat))

backend/src/handlers/health_stats.rs

@@ -1,8 +1,9 @@
 use crate::auth::jwt::Claims;
 use crate::config::AppState;
-use crate::models::health_stats::HealthStatistic;
+use crate::models::health_stats::{HealthStatResponse, HealthStatistic};
+use crate::models::medication::EncryptedFieldWire;
 use axum::{
-    extract::{Path, Query, State},
+    extract::{Path, State},
     http::StatusCode,
     response::IntoResponse,
     Extension, Json,
@@ -12,24 +13,13 @@ use serde::Deserialize;
 
 #[derive(Debug, Deserialize)]
 pub struct CreateHealthStatRequest {
-    pub stat_type: String,
+    pub encrypted_data: EncryptedFieldWire,
-    pub value: serde_json::Value, // Support complex values like blood pressure
-    pub unit: String,
-    pub notes: Option<String>,
     pub recorded_at: Option<String>,
 }
 
 #[derive(Debug, Deserialize)]
 pub struct UpdateHealthStatRequest {
-    pub value: Option<serde_json::Value>,
+    pub encrypted_data: EncryptedFieldWire,
-    pub unit: Option<String>,
-    pub notes: Option<String>,
-}
-
-#[derive(Debug, Deserialize)]
-pub struct HealthTrendsQuery {
-    pub stat_type: String,
-    pub period: Option<String>, // "7d", "30d", etc.
 }
 
 pub async fn create_health_stat(
@@ -48,36 +38,29 @@ pub async fn create_health_stat(
         }
     };
 
-    // Convert complex value to f64 or store as string
-    let value_num = match req.value {
-        serde_json::Value::Number(n) => n.as_f64().unwrap_or(0.0),
-        serde_json::Value::Object(_) => {
-            // For complex objects like blood pressure, use a default
-            0.0
-        }
-        _ => 0.0,
-    };
-
     let stat = HealthStatistic {
         id: None,
         user_id: claims.sub.clone(),
-        stat_type: req.stat_type,
+        encrypted_data: req.encrypted_data,
-        value: value_num,
+        recorded_at: req
-        unit: req.unit,
+            .recorded_at
-        notes: req.notes,
+            .unwrap_or_else(|| chrono::Utc::now().to_rfc3339()),
-        recorded_at: req.recorded_at.unwrap_or_else(|| {
-            use chrono::Utc;
-            Utc::now().to_rfc3339()
-        }),
     };
 
     match repo.create(&stat).await {
-        Ok(created) => (StatusCode::CREATED, Json(created)).into_response(),
+        Ok(Some(created)) => {
+            (StatusCode::CREATED, Json(HealthStatResponse::from(created))).into_response()
+        }
+        Ok(None) => (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(serde_json::json!({ "error": "failed to create" })),
+        )
+            .into_response(),
         Err(e) => {
             eprintln!("Error creating health stat: {:?}", e);
             (
                 StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to create health stat",
+                Json(serde_json::json!({ "error": "database error" })),
             )
                 .into_response()
         }
@@ -99,15 +82,15 @@ pub async fn list_health_stats(
         }
     };
     match repo.find_by_user(&claims.sub).await {
-        Ok(stats) => (StatusCode::OK, Json(stats)).into_response(),
+        Ok(stats) => {
-        Err(e) => {
+            let resp: Vec<HealthStatResponse> = stats.into_iter().map(Into::into).collect();
-            eprintln!("Error fetching health stats: {:?}", e);
+            (StatusCode::OK, Json(resp)).into_response()
-            (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to fetch health stats",
-            )
-                .into_response()
         }
+        Err(_) => (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(serde_json::json!({ "error": "database error" })),
+        )
+            .into_response(),
     }
 }
 
@@ -128,7 +111,13 @@ pub async fn get_health_stat(
     };
     let object_id = match ObjectId::parse_str(&id) {
         Ok(oid) => oid,
-        Err(_) => return (StatusCode::BAD_REQUEST, "Invalid ID").into_response(),
+        Err(_) => {
+            return (
+                StatusCode::BAD_REQUEST,
+                Json(serde_json::json!({ "error": "invalid id" })),
+            )
+                .into_response()
+        }
     };
 
     match repo.find_by_id(&object_id).await {
@@ -136,17 +125,18 @@ pub async fn get_health_stat(
             if stat.user_id != claims.sub {
                 return (StatusCode::FORBIDDEN, "Access denied").into_response();
             }
-            (StatusCode::OK, Json(stat)).into_response()
+            (StatusCode::OK, Json(HealthStatResponse::from(stat))).into_response()
-        }
-        Ok(None) => (StatusCode::NOT_FOUND, "Health stat not found").into_response(),
-        Err(e) => {
-            eprintln!("Error fetching health stat: {:?}", e);
-            (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to fetch health stat",
-            )
-                .into_response()
         }
+        Ok(None) => (
+            StatusCode::NOT_FOUND,
+            Json(serde_json::json!({ "error": "not found" })),
+        )
+            .into_response(),
+        Err(_) => (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(serde_json::json!({ "error": "database error" })),
+        )
+            .into_response(),
     }
 }
 
@@ -168,45 +158,52 @@ pub async fn update_health_stat(
     };
     let object_id = match ObjectId::parse_str(&id) {
         Ok(oid) => oid,
-        Err(_) => return (StatusCode::BAD_REQUEST, "Invalid ID").into_response(),
-    };
-
-    let mut stat = match repo.find_by_id(&object_id).await {
-        Ok(Some(s)) => s,
-        Ok(None) => return (StatusCode::NOT_FOUND, "Health stat not found").into_response(),
         Err(_) => {
             return (
-                StatusCode::INTERNAL_SERVER_ERROR,
+                StatusCode::BAD_REQUEST,
-                "Failed to fetch health stat",
+                Json(serde_json::json!({ "error": "invalid id" })),
             )
                 .into_response()
         }
     };
 
-    if stat.user_id != claims.sub {
+    let existing = match repo.find_by_id(&object_id).await {
+        Ok(Some(s)) => s,
+        Ok(None) => {
+            return (
+                StatusCode::NOT_FOUND,
+                Json(serde_json::json!({ "error": "not found" })),
+            )
+                .into_response()
+        }
+        Err(_) => {
+            return (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                Json(serde_json::json!({ "error": "database error" })),
+            )
+                .into_response()
+        }
+    };
+
+    if existing.user_id != claims.sub {
         return (StatusCode::FORBIDDEN, "Access denied").into_response();
     }
 
-    if let Some(value) = req.value {
+    match repo
-        let value_num = match value {
+        .update_encrypted_data(&object_id, req.encrypted_data)
-            serde_json::Value::Number(n) => n.as_f64().unwrap_or(0.0),
+        .await
-            _ => 0.0,
+    {
-        };
+        Ok(Some(updated)) => {
-        stat.value = value_num;
+            (StatusCode::OK, Json(HealthStatResponse::from(updated))).into_response()
-    }
+        }
-    if let Some(unit) = req.unit {
+        Ok(None) => (
-        stat.unit = unit;
+            StatusCode::NOT_FOUND,
-    }
+            Json(serde_json::json!({ "error": "not found" })),
-    if let Some(notes) = req.notes {
+        )
-        stat.notes = Some(notes);
+            .into_response(),
-    }
-
-    match repo.update(&object_id, &stat).await {
-        Ok(Some(updated)) => (StatusCode::OK, Json(updated)).into_response(),
-        Ok(None) => (StatusCode::NOT_FOUND, "Failed to update").into_response(),
         Err(_) => (
             StatusCode::INTERNAL_SERVER_ERROR,
-            "Failed to update health stat",
+            Json(serde_json::json!({ "error": "database error" })),
         )
             .into_response(),
     }
@@ -229,16 +226,28 @@ pub async fn delete_health_stat(
     };
     let object_id = match ObjectId::parse_str(&id) {
         Ok(oid) => oid,
-        Err(_) => return (StatusCode::BAD_REQUEST, "Invalid ID").into_response(),
+        Err(_) => {
+            return (
+                StatusCode::BAD_REQUEST,
+                Json(serde_json::json!({ "error": "invalid id" })),
+            )
+                .into_response()
+        }
     };
 
     let stat = match repo.find_by_id(&object_id).await {
         Ok(Some(s)) => s,
-        Ok(None) => return (StatusCode::NOT_FOUND, "Health stat not found").into_response(),
+        Ok(None) => {
+            return (
+                StatusCode::NOT_FOUND,
+                Json(serde_json::json!({ "error": "not found" })),
+            )
+                .into_response()
+        }
         Err(_) => {
             return (
                 StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to fetch health stat",
+                Json(serde_json::json!({ "error": "database error" })),
             )
                 .into_response()
         }
@@ -252,71 +261,8 @@ pub async fn delete_health_stat(
         Ok(true) => StatusCode::NO_CONTENT.into_response(),
         _ => (
             StatusCode::INTERNAL_SERVER_ERROR,
-            "Failed to delete health stat",
+            Json(serde_json::json!({ "error": "database error" })),
         )
             .into_response(),
     }
 }
-
-pub async fn get_health_trends(
-    State(state): State<AppState>,
-    Extension(claims): Extension<Claims>,
-    Query(query): Query<HealthTrendsQuery>,
-) -> impl IntoResponse {
-    let repo = match state.health_stats_repo.as_ref() {
-        Some(r) => r,
-        None => {
-            return (
-                StatusCode::SERVICE_UNAVAILABLE,
-                Json(serde_json::json!({ "error": "health stats unavailable" })),
-            )
-                .into_response()
-        }
-    };
-    match repo.find_by_user(&claims.sub).await {
-        Ok(stats) => {
-            // Filter by stat_type
-            let filtered: Vec<HealthStatistic> = stats
-                .into_iter()
-                .filter(|s| s.stat_type == query.stat_type)
-                .collect();
-
-            // Calculate basic trend statistics
-            if filtered.is_empty() {
-                return (
-                    StatusCode::OK,
-                    Json(serde_json::json!({
-                        "stat_type": query.stat_type,
-                        "count": 0,
-                        "data": []
-                    })),
-                )
-                    .into_response();
-            }
-
-            let values: Vec<f64> = filtered.iter().map(|s| s.value).collect();
-            let avg = values.iter().sum::<f64>() / values.len() as f64;
-            let min = values.iter().fold(f64::INFINITY, |a, &b| a.min(b));
-            let max = values.iter().fold(f64::NEG_INFINITY, |a, &b| a.max(b));
-
-            let response = serde_json::json!({
-                "stat_type": query.stat_type,
-                "count": filtered.len(),
-                "average": avg,
-                "min": min,
-                "max": max,
-                "data": filtered
-            });
-
-            (StatusCode::OK, Json(response)).into_response()
-        }
-        Err(e) => {
-            eprintln!("Error fetching health trends: {:?}", e);
-            (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "Failed to fetch health trends",
-            )
-                .into_response()
-        }
-    }
-}

backend/src/handlers/medications.rs

@@ -50,6 +50,7 @@ pub async fn create_medication(
         created_at: now.into(),
         updated_at: now.into(),
         active: req.active,
+        dose_schedule: req.dose_schedule,
         pill_identification: None,
     };
 
@@ -173,6 +174,7 @@ pub async fn get_adherence(
 
     let database = state.db.get_database();
     let doses: mongodb::Collection<MedicationDose> = database.collection("medication_doses");
+    let med_repo = MedicationRepository::new(database.collection("medications"));
 
     // Look at doses logged in the last PERIOD_DAYS days for this medication.
     let since = DateTime::from_system_time(
@@ -183,7 +185,7 @@ pub async fn get_adherence(
         "loggedAt": { "$gte": since }
     };
 
-    let total = doses
+    let total_logged = doses
         .count_documents(filter.clone(), None)
         .await
         .map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
@@ -194,23 +196,81 @@ pub async fn get_adherence(
         .await
         .map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
 
-    // Without a dose-schedule model, every logged dose counts as one scheduled
+    // Fetch the medication to check for a dose schedule.
-    // dose that was resolved (taken or intentionally skipped). Adherence is the
+    let medication = med_repo
-    // share that were marked taken. Real scheduling is future work.
+        .find_by_medication_id(&id)
-    let missed = total.saturating_sub(taken);
+        .await
-    let rate = if total == 0 {
+        .map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
-        0.0
+
-    } else {
+    let (scheduled_doses, total_doses, missed_doses, rate) =
-        (taken as f64 / total as f64) * 100.0
+        match medication.and_then(|m| m.dose_schedule) {
-    };
+            Some(schedule) => {
+                // Compute the expected number of doses in the period from the schedule.
+                let scheduled = compute_scheduled_doses(&schedule, PERIOD_DAYS);
+                let missed = scheduled.saturating_sub(taken as i64);
+                let r = if scheduled == 0 {
+                    0.0
+                } else {
+                    (taken as f64 / scheduled as f64) * 100.0
+                };
+                (scheduled, scheduled, missed, r)
+            }
+            None => {
+                // No schedule: fall back to taken / total_logged.
+                let missed = (total_logged as i64).saturating_sub(taken as i64);
+                let r = if total_logged == 0 {
+                    0.0
+                } else {
+                    (taken as f64 / total_logged as f64) * 100.0
+                };
+                (total_logged as i64, total_logged as i64, missed, r)
+            }
+        };
 
     Ok(Json(crate::models::medication::AdherenceStats {
         medication_id: id,
-        total_doses: total as i64,
+        total_doses,
-        scheduled_doses: total as i64,
+        scheduled_doses,
         taken_doses: taken as i64,
-        missed_doses: missed as i64,
+        missed_doses,
         adherence_rate: rate,
         period_days: PERIOD_DAYS,
     }))
 }
+
+/// Compute the expected number of doses over the last `days` days from a schedule.
+fn compute_scheduled_doses(schedule: &crate::models::medication::DoseSchedule, days: i64) -> i64 {
+    use chrono::{Datelike, Utc};
+    let now = Utc::now();
+    let weekdays: &[&str] = &["mon", "tue", "wed", "thu", "fri", "sat", "sun"];
+    // chrono weekday(): 0=Sunday, 1=Monday, ... 6=Saturday
+    let active_days: Vec<usize> = if schedule.days_of_week.is_empty() {
+        // Every day.
+        (0..7).collect()
+    } else {
+        schedule
+            .days_of_week
+            .iter()
+            .filter_map(|d| weekdays.iter().position(|&w| w == d))
+            .map(|pos| {
+                // weekdays is Mon-first (0=Mon); chrono is Sun-first (0=Sun).
+                // Map: Mon=0 -> 1, Tue=1 -> 2, ..., Sun=6 -> 0
+                if pos == 6 {
+                    0
+                } else {
+                    pos + 1
+                }
+            })
+            .collect()
+    };
+
+    let mut count: i64 = 0;
+    for i in 0..days {
+        let date = now - chrono::Duration::days(i);
+        let chrono_dow = date.weekday().num_days_from_sunday() as usize; // 0=Sun
+        if active_days.contains(&chrono_dow) {
+            count += schedule.times_per_day as i64;
+        }
+    }
+    count
+}

backend/src/handlers/mod.rs

@@ -17,8 +17,7 @@ pub use appointments::{
 pub use auth::{login, logout, recover_password, recovery_info, refresh, register};
 pub use health::{health_check, ready_check};
 pub use health_stats::{
-    create_health_stat, delete_health_stat, get_health_stat, get_health_trends, list_health_stats,
+    create_health_stat, delete_health_stat, get_health_stat, list_health_stats, update_health_stat,
-    update_health_stat,
 };
 pub use interactions::{check_interactions, check_new_medication};
 pub use medications::{

backend/src/models/health_data.rs

@@ -1,28 +1,8 @@
-use mongodb::bson::{oid::ObjectId, DateTime};
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+/// The storage-layer encrypted-field wrapper used by Medication and Appointment
-pub struct HealthData {
+/// documents. NOTE: the `HealthData` model that previously used `Vec<EncryptedField>`
-    #[serde(rename = "_id", skip_serializing_if = "Option::is_none")]
+/// was dead code (no handler/route/repository) and has been removed.
-    pub id: Option<ObjectId>,
-    #[serde(rename = "healthDataId")]
-    pub health_data_id: String,
-    #[serde(rename = "userId")]
-    pub user_id: String,
-    #[serde(rename = "profileId")]
-    pub profile_id: String,
-    #[serde(rename = "familyId")]
-    pub family_id: Option<String>,
-    #[serde(rename = "healthData")]
-    pub health_data: Vec<EncryptedField>,
-    #[serde(rename = "createdAt")]
-    pub created_at: DateTime,
-    #[serde(rename = "updatedAt")]
-    pub updated_at: DateTime,
-    #[serde(rename = "dataSource")]
-    pub data_source: String,
-}
-
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct EncryptedField {
     pub encrypted: bool,

backend/src/models/health_stats.rs

@@ -6,19 +6,42 @@ use mongodb::{
 };
 use serde::{Deserialize, Serialize};
 
+use crate::models::medication::EncryptedFieldWire;
+
+/// Zero-knowledge health stat: the value/unit/type/notes are encrypted inside
+/// the opaque blob; only `recorded_at` stays plaintext (filterable/sortable).
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct HealthStatistic {
     #[serde(rename = "_id", skip_serializing_if = "Option::is_none")]
     pub id: Option<ObjectId>,
     pub user_id: String,
-    #[serde(rename = "type")]
+    /// Opaque client-encrypted blob (value, unit, type, notes inside).
-    pub stat_type: String,
+    #[serde(rename = "encryptedData")]
-    pub value: f64,
+    pub encrypted_data: EncryptedFieldWire,
-    pub unit: String,
+    /// When the reading was taken (plaintext, filterable/sortable).
-    pub notes: Option<String>,
     pub recorded_at: String,
 }
 
+/// Wire response (what the API returns).
+#[derive(Debug, Serialize)]
+pub struct HealthStatResponse {
+    pub id: String,
+    pub user_id: String,
+    pub encrypted_data: EncryptedFieldWire,
+    pub recorded_at: String,
+}
+
+impl From<HealthStatistic> for HealthStatResponse {
+    fn from(s: HealthStatistic) -> Self {
+        HealthStatResponse {
+            id: s.id.map(|o| o.to_hex()).unwrap_or_default(),
+            user_id: s.user_id,
+            encrypted_data: s.encrypted_data,
+            recorded_at: s.recorded_at,
+        }
+    }
+}
+
 #[derive(Clone)]
 pub struct HealthStatisticsRepository {
     collection: Collection<HealthStatistic>,
@@ -31,11 +54,14 @@ impl HealthStatisticsRepository {
         }
     }
 
-    pub async fn create(&self, stat: &HealthStatistic) -> Result<HealthStatistic, MongoError> {
+    pub async fn create(
+        &self,
+        stat: &HealthStatistic,
+    ) -> Result<Option<HealthStatistic>, MongoError> {
         let result = self.collection.insert_one(stat, None).await?;
         let mut created = stat.clone();
-        created.id = Some(result.inserted_id.as_object_id().unwrap());
+        created.id = result.inserted_id.as_object_id();
-        Ok(created)
+        Ok(Some(created))
     }
 
     pub async fn find_by_user(&self, user_id: &str) -> Result<Vec<HealthStatistic>, MongoError> {
@@ -49,14 +75,22 @@ impl HealthStatisticsRepository {
         self.collection.find_one(filter, None).await
     }
 
-    pub async fn update(
+    pub async fn update_encrypted_data(
         &self,
         id: &ObjectId,
-        stat: &HealthStatistic,
+        encrypted_data: EncryptedFieldWire,
     ) -> Result<Option<HealthStatistic>, MongoError> {
-        let filter = doc! { "_id": id };
+        self.collection
-        self.collection.replace_one(filter, stat, None).await?;
+            .find_one_and_update(
-        Ok(Some(stat.clone()))
+                doc! { "_id": id },
+                doc! { "$set": {
+                    "encryptedData.data": encrypted_data.data,
+                    "encryptedData.iv": encrypted_data.iv,
+                    "encryptedData.authTag": encrypted_data.auth_tag,
+                }},
+                None,
+            )
+            .await
     }
 
     pub async fn delete(&self, id: &ObjectId) -> Result<bool, MongoError> {

backend/src/models/medication.rs

@@ -106,6 +106,8 @@ pub struct MedicationResponse {
     pub user_id: String,
     pub profile_id: String,
     pub active: bool,
+    /// Dose schedule (plaintext, for adherence calc).
+    pub dose_schedule: Option<DoseSchedule>,
     /// Opaque client-encrypted blob (base64 ciphertext + iv). The server stores
     /// and returns this verbatim; only the client can decrypt it.
     pub encrypted_data: EncryptedFieldWire,
@@ -132,6 +134,7 @@ impl std::convert::From<Medication> for MedicationResponse {
             user_id: m.user_id,
             profile_id: m.profile_id,
             active: m.active,
+            dose_schedule: m.dose_schedule,
             encrypted_data: EncryptedFieldWire {
                 data: m.medication_data.data,
                 iv: m.medication_data.iv,
@@ -154,6 +157,17 @@ fn system_time_to_rfc3339(t: std::time::SystemTime) -> String {
         .unwrap_or_default()
 }
 
+/// Plaintext dose schedule (top-level on the Medication document so the server
+/// can compute adherence without decrypting the opaque medication_data blob).
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DoseSchedule {
+    pub times_per_day: u32,
+    /// Which days of the week the medication is taken. Empty = every day.
+    /// Values: "mon","tue","wed","thu","fri","sat","sun" (lowercase).
+    #[serde(default)]
+    pub days_of_week: Vec<String>,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Medication {
     #[serde(rename = "_id", skip_serializing_if = "Option::is_none")]
@@ -176,6 +190,9 @@ pub struct Medication {
     /// documents that predate the field (see `default_true`).
     #[serde(rename = "active", default = "default_true")]
     pub active: bool,
+    /// Dose schedule for adherence calculation (plaintext, top-level).
+    #[serde(rename = "doseSchedule", skip_serializing_if = "Option::is_none")]
+    pub dose_schedule: Option<DoseSchedule>,
 
     /// Physical pill identification (Phase 2.8 - optional)
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -226,6 +243,8 @@ pub struct CreateMedicationRequest {
     /// Whether the medication is active on creation (defaults to true).
     #[serde(default = "default_true")]
     pub active: bool,
+    /// Dose schedule for adherence calculation (plaintext).
+    pub dose_schedule: Option<DoseSchedule>,
 }
 
 #[derive(Debug, Deserialize)]
@@ -235,6 +254,8 @@ pub struct UpdateMedicationRequest {
     pub encrypted_data: Option<EncryptedFieldWire>,
     /// Set the medication active/inactive.
     pub active: Option<bool>,
+    /// Update the dose schedule.
+    pub dose_schedule: Option<Option<DoseSchedule>>,
 }
 
 #[derive(Debug, Deserialize)]
@@ -360,6 +381,19 @@ impl MedicationRepository {
         if let Some(active) = updates.active {
             update_doc.insert("active", active);
         }
+        if let Some(schedule) = updates.dose_schedule {
+            match schedule {
+                Some(s) => {
+                    if let Ok(sched_doc) = mongodb::bson::to_document(&s) {
+                        update_doc.insert("doseSchedule", sched_doc);
+                    }
+                }
+                None => {
+                    // Explicitly clear the schedule.
+                    update_doc.insert("doseSchedule", mongodb::bson::Bson::Null);
+                }
+            }
+        }
 
         let medication = self
             .collection
@@ -395,6 +429,19 @@ impl MedicationRepository {
         if let Some(active) = updates.active {
             update_doc.insert("active", active);
         }
+        if let Some(schedule) = updates.dose_schedule {
+            match schedule {
+                Some(s) => {
+                    if let Ok(sched_doc) = mongodb::bson::to_document(&s) {
+                        update_doc.insert("doseSchedule", sched_doc);
+                    }
+                }
+                None => {
+                    // Explicitly clear the schedule.
+                    update_doc.insert("doseSchedule", mongodb::bson::Bson::Null);
+                }
+            }
+        }
 
         let medication = self
             .collection
@@ -438,6 +485,7 @@ mod tests {
             created_at: DateTime::now(),
             updated_at: DateTime::now(),
             active: true,
+            dose_schedule: None,
             pill_identification: None,
         };
 

backend/tests/common/mod.rs

@@ -79,6 +79,10 @@ pub fn test_config(db_name: &str) -> Config {
             allowed_origins: vec!["http://localhost:3000".to_string()],
         },
         environment: Environment::Development,
+        rate_limit: normogen_backend::config::RateLimitConfig {
+            max_requests: 1000,
+            window_secs: 60,
+        },
     }
 }