feat: zero-knowledge encryption Phase 1 — backend opaque + crypto module (WIP)
Backend: server can no longer read user data. All data blobs (medication, appointment, profile name) are now opaque client-encrypted ciphertext — the server stores and returns them verbatim, never deserializing the contents. - Medication: removed MedicationData + flat MedicationResponse; new MedicationResponse echoes metadata + encrypted_data blob. Create/update accept opaque blobs (whole-blob replace). Update is no longer load-mutate- reserialize (server can't read the data). - Appointment: same opaque treatment; status moved to a top-level document field so it remains filterable without decryption. - Profile: name is now an opaque encrypted blob (name_data/name_iv). Auto- created profile on register starts with an empty name; client sets it. - EncryptedFieldWire type shared across medication/appointment. Frontend (partial): crypto module using Web Crypto API — - crypto/keys.ts: double-PBKDF2 derivation (auth secret sent to server + encryption key kept in memory); in-memory key store (set/get/clear). - crypto/cipher.ts: AES-GCM encrypt/decrypt + JSON convenience wrappers. - crypto/index.ts: re-exports. NOT YET DONE (frontend integration): auth store key derivation on login/register, stores decrypt-on-load/encrypt-on-write, types update, UI components wired, crypto round-trip tests, ADR. This commit is a verified checkpoint — backend builds clean (21 tests, 0 warnings); frontend crypto module exists but is not yet wired into the data flow.
This commit is contained in:
parent
057303a8d0
commit
149ce37654
9 changed files with 331 additions and 566 deletions
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@ -33,23 +33,12 @@ pub async fn create_appointment(
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let now = SystemTime::now();
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let appointment_id = uuid::Uuid::new_v4().to_string();
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// Pack the request fields into the data blob (camelCase keys).
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// Zero-knowledge: store the client's opaque encrypted blob verbatim.
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let appointment_data = EncryptedField {
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data: serde_json::json!({
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"title": req.title,
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"provider": req.provider,
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"appointmentType": req.appointment_type,
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"dateTime": req.date_time,
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"location": req.location,
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"durationMinutes": req.duration_minutes,
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"reason": req.reason,
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"notes": req.notes,
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"status": req.status.unwrap_or_else(|| "upcoming".to_string()),
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})
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.to_string(),
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encrypted: false,
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iv: String::new(),
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auth_tag: String::new(),
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data: req.encrypted_data.data,
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encrypted: true,
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iv: req.encrypted_data.iv,
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auth_tag: req.encrypted_data.auth_tag,
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};
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let appointment = crate::models::appointment::Appointment {
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@ -59,6 +48,7 @@ pub async fn create_appointment(
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profile_id: req.profile_id.clone(),
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appointment_data,
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reminders: vec![],
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status: req.status,
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created_at: DateTime::from_system_time(now),
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updated_at: DateTime::from_system_time(now),
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};
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@ -31,28 +31,13 @@ pub async fn create_medication(
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let now = SystemTime::now();
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let medication_id = uuid::Uuid::new_v4().to_string();
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// Build medication data JSON
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let medication_data_value = serde_json::json!({
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"name": req.name,
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"dosage": req.dosage,
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"frequency": req.frequency,
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"route": req.route,
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"reason": req.reason,
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"instructions": req.instructions,
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"sideEffects": req.side_effects.unwrap_or_default(),
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"prescribedBy": req.prescribed_by,
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"prescribedDate": req.prescribed_date,
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"startDate": req.start_date,
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"endDate": req.end_date,
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"notes": req.notes,
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"tags": req.tags.unwrap_or_default(),
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});
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// Zero-knowledge: the client sends an already-encrypted blob; the server
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// stores it verbatim and never inspects the contents.
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let medication_data = crate::models::health_data::EncryptedField {
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data: medication_data_value.to_string(),
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encrypted: false,
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iv: String::new(),
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auth_tag: String::new(),
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data: req.encrypted_data.data,
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encrypted: true,
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iv: req.encrypted_data.iv,
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auth_tag: req.encrypted_data.auth_tag,
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};
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let medication = Medication {
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@ -61,19 +46,11 @@ pub async fn create_medication(
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user_id: claims.sub,
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profile_id: req.profile_id.clone(),
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medication_data,
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reminders: req
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.reminder_times
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.unwrap_or_default()
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.into_iter()
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.map(|time| crate::models::medication::MedicationReminder {
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reminder_id: uuid::Uuid::new_v4().to_string(),
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scheduled_time: time,
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})
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.collect(),
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reminders: vec![],
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created_at: now.into(),
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updated_at: now.into(),
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active: req.active,
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pill_identification: req.pill_identification, // Phase 2.8
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pill_identification: None,
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};
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match repo.create(medication).await {
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@ -5,7 +5,6 @@ use axum::{
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};
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use mongodb::bson::DateTime;
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use serde::{Deserialize, Serialize};
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use validator::Validate;
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use crate::{
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auth::jwt::Claims,
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@ -13,12 +12,15 @@ use crate::{
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models::profile::{Profile, ProfileRepository},
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};
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/// The profile as exposed to clients (omits the internal encryption fields).
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/// The profile as exposed to clients. The display name is returned as an opaque
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/// client-encrypted blob (the server cannot read it).
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#[derive(Debug, Serialize)]
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pub struct ProfileResponse {
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pub profile_id: String,
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pub user_id: String,
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pub name: String,
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/// Opaque client-encrypted display name.
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pub name_data: String,
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pub name_iv: String,
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pub role: String,
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pub permissions: Vec<String>,
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pub created_at: DateTime,
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@ -30,7 +32,8 @@ impl From<Profile> for ProfileResponse {
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Self {
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profile_id: p.profile_id,
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user_id: p.user_id,
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name: p.name,
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name_data: p.name,
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name_iv: p.name_iv,
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role: p.role,
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permissions: p.permissions,
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created_at: p.created_at,
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@ -41,17 +44,17 @@ impl From<Profile> for ProfileResponse {
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/// Create the default "patient" profile for a freshly registered user. Called
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/// from `register`. The profile_id is deterministic: `profile_<user_id>` — this
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/// is the contract the frontend relies on for medication creation.
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pub fn build_default_profile(user_id: &str, name: &str) -> Profile {
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/// is the contract the frontend relies on for medication creation. The name is
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/// empty (not encrypted) because the server has no encryption key; the client
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/// sets it via PUT /profiles/me after deriving its key.
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pub fn build_default_profile(user_id: &str, _name: &str) -> Profile {
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let now = DateTime::now();
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Profile {
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id: None,
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profile_id: format!("profile_{user_id}"),
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user_id: user_id.to_string(),
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family_id: None,
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// TODO: encrypt the name (the model anticipates nameIv/nameAuthTag, but
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// no crypto layer is implemented yet).
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name: name.to_string(),
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name: String::new(),
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name_iv: String::new(),
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name_auth_tag: String::new(),
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role: "patient".to_string(),
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@ -61,10 +64,13 @@ pub fn build_default_profile(user_id: &str, name: &str) -> Profile {
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}
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}
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#[derive(Debug, Deserialize, Validate)]
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/// PUT /profiles/me body — the client sends the encrypted name blob.
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#[derive(Debug, Deserialize)]
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pub struct UpdateProfileNameRequest {
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#[validate(length(min = 1, max = 100))]
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pub name: String,
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pub name_data: String,
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pub name_iv: String,
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#[serde(default)]
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pub name_auth_tag: String,
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}
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/// GET /api/profiles/me — the current user's profile. If for some reason the
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@ -102,25 +108,24 @@ pub async fn get_my_profile(
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Ok(Json(ProfileResponse::from(profile)))
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}
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/// PUT /api/profiles/me — update the profile's display name.
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/// PUT /api/profiles/me — update the profile's encrypted display-name blob.
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pub async fn update_my_profile(
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State(state): State<AppState>,
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Extension(claims): Extension<Claims>,
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Json(req): Json<UpdateProfileNameRequest>,
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) -> Result<Json<ProfileResponse>, (StatusCode, Json<serde_json::Value>)> {
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if let Err(errors) = req.validate() {
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return Err((
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StatusCode::BAD_REQUEST,
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Json(
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serde_json::json!({ "error": "validation failed", "details": errors.to_string() }),
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),
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));
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}
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let database = state.db.get_database();
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let repo = ProfileRepository::new(database.collection("profiles"));
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match repo.update_name(&claims.sub, &req.name).await {
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match repo
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.update_encrypted_name(
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&claims.sub,
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&req.name_data,
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&req.name_iv,
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&req.name_auth_tag,
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)
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.await
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{
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Ok(Some(updated)) => Ok(Json(ProfileResponse::from(updated))),
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Ok(None) => Err((
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StatusCode::NOT_FOUND,
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@ -4,74 +4,37 @@ use mongodb::bson::{doc, oid::ObjectId, DateTime};
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use mongodb::Collection;
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use serde::{Deserialize, Serialize};
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// ============================================================================
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// APPOINTMENT MODEL
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// ============================================================================
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/// The structured content stored (as a JSON string) inside
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/// `appointment_data.data`. Deserializes from the camelCase keys the create
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/// handler packs in. Mirrors the MedicationData pattern.
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#[derive(Debug, Clone, Deserialize, Default)]
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pub struct AppointmentData {
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pub title: String,
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pub provider: String,
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#[serde(rename = "appointmentType")]
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pub appointment_type: String,
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#[serde(rename = "dateTime")]
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pub date_time: String,
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pub location: Option<String>,
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#[serde(rename = "durationMinutes")]
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pub duration_minutes: Option<i64>,
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pub reason: Option<String>,
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pub notes: Option<String>,
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#[serde(default = "default_status")]
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pub status: String,
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}
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fn default_status() -> String {
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"upcoming".to_string()
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}
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/// The flat, snake_case appointment representation returned by the API. Built
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/// from a stored `Appointment` by deserializing its `appointment_data.data` blob.
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/// Zero-knowledge wire response. The server returns ONLY metadata + the opaque
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/// encrypted data blob + the top-level `status` (filterable without decrypting).
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#[derive(Debug, Serialize)]
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pub struct AppointmentResponse {
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pub id: String,
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pub appointment_id: String,
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pub user_id: String,
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pub profile_id: String,
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pub title: String,
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pub provider: String,
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pub appointment_type: String,
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pub date_time: String,
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pub location: Option<String>,
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pub duration_minutes: Option<i64>,
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pub reason: Option<String>,
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pub notes: Option<String>,
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pub status: String,
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pub encrypted_data: crate::models::medication::EncryptedFieldWire,
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pub created_at: String,
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pub updated_at: String,
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}
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impl std::convert::From<Appointment> for AppointmentResponse {
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fn from(a: Appointment) -> Self {
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let data: AppointmentData =
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serde_json::from_str(&a.appointment_data.data).unwrap_or_default();
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AppointmentResponse {
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id: a.id.map(|o| o.to_hex()).unwrap_or_default(),
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appointment_id: a.appointment_id,
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user_id: a.user_id,
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profile_id: a.profile_id,
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title: data.title,
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provider: data.provider,
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appointment_type: data.appointment_type,
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date_time: data.date_time,
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location: data.location,
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duration_minutes: data.duration_minutes,
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reason: data.reason,
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notes: data.notes,
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status: data.status,
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status: a.status,
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encrypted_data: crate::models::medication::EncryptedFieldWire {
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data: a.appointment_data.data,
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iv: a.appointment_data.iv,
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auth_tag: a.appointment_data.auth_tag,
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},
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created_at: system_time_to_rfc3339(a.created_at.to_system_time()),
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updated_at: system_time_to_rfc3339(a.updated_at.to_system_time()),
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}
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@ -103,6 +66,9 @@ pub struct Appointment {
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pub appointment_data: EncryptedField,
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#[serde(rename = "reminders")]
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pub reminders: Vec<AppointmentReminder>,
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/// Top-level status so it can be filtered without decrypting the blob.
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#[serde(rename = "status", default = "default_status")]
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pub status: String,
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#[serde(rename = "createdAt")]
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pub created_at: DateTime,
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#[serde(rename = "updatedAt")]
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@ -118,34 +84,21 @@ pub struct AppointmentReminder {
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}
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// ============================================================================
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// REQUEST TYPES
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// REQUEST TYPES — opaque blobs; the client encrypts, the server stores verbatim.
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// ============================================================================
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#[derive(Debug, Deserialize)]
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pub struct CreateAppointmentRequest {
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pub title: String,
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pub provider: String,
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pub appointment_type: String,
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pub date_time: String,
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pub profile_id: String,
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pub location: Option<String>,
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pub duration_minutes: Option<i64>,
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pub reason: Option<String>,
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pub notes: Option<String>,
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/// Defaults to "upcoming" when omitted.
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pub status: Option<String>,
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pub encrypted_data: crate::models::medication::EncryptedFieldWire,
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/// Defaults to "upcoming".
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#[serde(default = "default_status")]
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pub status: String,
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}
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#[derive(Debug, Deserialize)]
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pub struct UpdateAppointmentRequest {
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pub title: Option<String>,
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pub provider: Option<String>,
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pub appointment_type: Option<String>,
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pub date_time: Option<String>,
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pub location: Option<String>,
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pub duration_minutes: Option<i64>,
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pub reason: Option<String>,
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pub notes: Option<String>,
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pub encrypted_data: Option<crate::models::medication::EncryptedFieldWire>,
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pub status: Option<String>,
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}
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@ -173,27 +126,21 @@ impl AppointmentRepository {
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Ok(appointment)
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}
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/// List a user's appointments, optionally filtered by status (a field
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/// inside the data blob — so filter post-query in Rust).
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/// List a user's appointments, optionally filtered by top-level `status`.
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pub async fn find_by_user_filtered(
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&self,
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user_id: &str,
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status: Option<&str>,
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) -> Result<Vec<Appointment>, Box<dyn std::error::Error>> {
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let filter = doc! { "userId": user_id };
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let mut filter = doc! { "userId": user_id };
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if let Some(s) = status {
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filter.insert("status", s);
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}
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let mut cursor = self.collection.find(filter, None).await?;
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let mut appointments = Vec::new();
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while let Some(appt) = cursor.next().await {
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appointments.push(appt?);
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}
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// status lives inside the data blob; filter here.
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if let Some(wanted) = status {
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appointments.retain(|a| {
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serde_json::from_str::<AppointmentData>(&a.appointment_data.data)
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.map(|d| d.status == wanted)
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.unwrap_or(false)
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});
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}
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Ok(appointments)
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}
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@ -205,65 +152,23 @@ impl AppointmentRepository {
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Ok(self.collection.find_one(filter, None).await?)
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}
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/// Whole-blob replace — the client re-encrypts and sends the new blob.
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pub async fn update_by_appointment_id(
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&self,
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appointment_id: &str,
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updates: UpdateAppointmentRequest,
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) -> Result<Option<Appointment>, Box<dyn std::error::Error>> {
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let filter = doc! { "appointmentId": appointment_id };
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let existing = self.collection.find_one(filter.clone(), None).await?;
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let Some(existing) = existing else {
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return Ok(None);
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};
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let mut update_doc = doc! { "updatedAt": DateTime::now() };
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let mut data: AppointmentData =
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serde_json::from_str(&existing.appointment_data.data).unwrap_or_default();
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if let Some(v) = updates.title {
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data.title = v;
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if let Some(blob) = updates.encrypted_data {
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update_doc.insert("appointmentData.data", blob.data);
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update_doc.insert("appointmentData.iv", blob.iv);
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update_doc.insert("appointmentData.authTag", blob.auth_tag);
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}
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if let Some(v) = updates.provider {
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data.provider = v;
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if let Some(status) = updates.status {
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update_doc.insert("status", status);
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}
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if let Some(v) = updates.appointment_type {
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data.appointment_type = v;
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}
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if let Some(v) = updates.date_time {
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data.date_time = v;
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}
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if let Some(v) = updates.location {
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data.location = Some(v);
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}
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if let Some(v) = updates.duration_minutes {
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data.duration_minutes = Some(v);
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}
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if let Some(v) = updates.reason {
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data.reason = Some(v);
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}
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if let Some(v) = updates.notes {
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data.notes = Some(v);
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}
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if let Some(v) = updates.status {
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data.status = v;
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}
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||||
let data_json = serde_json::json!({
|
||||
"title": data.title,
|
||||
"provider": data.provider,
|
||||
"appointmentType": data.appointment_type,
|
||||
"dateTime": data.date_time,
|
||||
"location": data.location,
|
||||
"durationMinutes": data.duration_minutes,
|
||||
"reason": data.reason,
|
||||
"notes": data.notes,
|
||||
"status": data.status,
|
||||
})
|
||||
.to_string();
|
||||
|
||||
let update_doc = doc! {
|
||||
"appointmentData.data": data_json,
|
||||
"updatedAt": DateTime::now(),
|
||||
};
|
||||
|
||||
Ok(self
|
||||
.collection
|
||||
|
|
@ -286,60 +191,28 @@ mod tests {
|
|||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn appointment_data_deserializes_camel_case_blob() {
|
||||
let json = r#"{
|
||||
"title": "Cardiology follow-up",
|
||||
"provider": "Dr. House",
|
||||
"appointmentType": "in-person",
|
||||
"dateTime": "2026-07-01T10:00:00Z",
|
||||
"location": "Main Clinic",
|
||||
"durationMinutes": 30,
|
||||
"reason": "check-up",
|
||||
"notes": "bring results",
|
||||
"status": "upcoming"
|
||||
}"#;
|
||||
let data: AppointmentData = serde_json::from_str(json).unwrap();
|
||||
assert_eq!(data.title, "Cardiology follow-up");
|
||||
assert_eq!(data.appointment_type, "in-person");
|
||||
assert_eq!(data.duration_minutes, Some(30));
|
||||
assert_eq!(data.status, "upcoming");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn appointment_data_defaults_status_when_missing() {
|
||||
let json = r#"{"title":"X","provider":"Y","appointmentType":"lab","dateTime":"2026-07-01T00:00:00Z"}"#;
|
||||
let data: AppointmentData = serde_json::from_str(json).unwrap();
|
||||
assert_eq!(data.status, "upcoming");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn appointment_response_flattens() {
|
||||
let blob = serde_json::json!({
|
||||
"title": "Dentist", "provider": "Dr. Molar", "appointmentType": "in-person",
|
||||
"dateTime": "2026-08-01T09:00:00Z", "location": null,
|
||||
"durationMinutes": null, "reason": null, "notes": null, "status": "completed"
|
||||
})
|
||||
.to_string();
|
||||
fn appointment_response_echoes_opaque_blob_and_status() {
|
||||
let appt = Appointment {
|
||||
id: Some(ObjectId::new()),
|
||||
appointment_id: "apt-1".to_string(),
|
||||
user_id: "user-1".to_string(),
|
||||
profile_id: "profile_user-1".to_string(),
|
||||
appointment_data: EncryptedField {
|
||||
data: blob,
|
||||
encrypted: false,
|
||||
iv: String::new(),
|
||||
data: "opaque-ciphertext".to_string(),
|
||||
encrypted: true,
|
||||
iv: "base64-iv".to_string(),
|
||||
auth_tag: String::new(),
|
||||
},
|
||||
reminders: vec![],
|
||||
status: "completed".to_string(),
|
||||
created_at: DateTime::now(),
|
||||
updated_at: DateTime::now(),
|
||||
};
|
||||
|
||||
let resp: AppointmentResponse = appt.into();
|
||||
assert_eq!(resp.appointment_id, "apt-1");
|
||||
assert_eq!(resp.title, "Dentist");
|
||||
assert_eq!(resp.appointment_type, "in-person");
|
||||
assert_eq!(resp.status, "completed");
|
||||
assert_eq!(resp.encrypted_data.data, "opaque-ciphertext");
|
||||
assert!(!resp.id.is_empty());
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -96,85 +96,47 @@ pub struct AdherenceStats {
|
|||
// MEDICATION MODEL (Existing + Phase 2.8 updates)
|
||||
// ============================================================================
|
||||
|
||||
/// The structured content stored (as a JSON string) inside `medication_data.data`.
|
||||
/// Deserializes from the camelCase keys the create handler packs in. This is the
|
||||
/// intermediate type used to flatten a `Medication` into a `MedicationResponse`.
|
||||
#[derive(Debug, Clone, Deserialize, Default)]
|
||||
pub struct MedicationData {
|
||||
pub name: String,
|
||||
pub dosage: String,
|
||||
pub frequency: String,
|
||||
pub route: String,
|
||||
pub reason: Option<String>,
|
||||
pub instructions: Option<String>,
|
||||
#[serde(rename = "sideEffects", default)]
|
||||
pub side_effects: Vec<String>,
|
||||
#[serde(rename = "prescribedBy")]
|
||||
pub prescribed_by: Option<String>,
|
||||
#[serde(rename = "prescribedDate")]
|
||||
pub prescribed_date: Option<String>,
|
||||
#[serde(rename = "startDate")]
|
||||
pub start_date: Option<String>,
|
||||
#[serde(rename = "endDate")]
|
||||
pub end_date: Option<String>,
|
||||
pub notes: Option<String>,
|
||||
#[serde(default)]
|
||||
pub tags: Vec<String>,
|
||||
}
|
||||
|
||||
/// The flat, snake_case medication representation returned by the API. Built from
|
||||
/// a stored `Medication` by deserializing its `medication_data.data` blob.
|
||||
/// Timestamps are ISO 8601 strings; `active` reflects the persisted flag.
|
||||
/// Zero-knowledge wire response. The server returns ONLY metadata + the opaque
|
||||
/// encrypted data blob (which the client decrypts). The server cannot read
|
||||
/// name/dosage/etc. — those live encrypted inside `encrypted_data`.
|
||||
#[derive(Debug, Serialize)]
|
||||
pub struct MedicationResponse {
|
||||
pub id: String,
|
||||
pub medication_id: String,
|
||||
pub user_id: String,
|
||||
pub profile_id: String,
|
||||
pub name: String,
|
||||
pub dosage: String,
|
||||
pub frequency: String,
|
||||
pub route: String,
|
||||
pub reason: Option<String>,
|
||||
pub instructions: Option<String>,
|
||||
pub side_effects: Vec<String>,
|
||||
pub prescribed_by: Option<String>,
|
||||
pub prescribed_date: Option<String>,
|
||||
pub start_date: Option<String>,
|
||||
pub end_date: Option<String>,
|
||||
pub notes: Option<String>,
|
||||
pub tags: Vec<String>,
|
||||
pub active: bool,
|
||||
/// Opaque client-encrypted blob (base64 ciphertext + iv). The server stores
|
||||
/// and returns this verbatim; only the client can decrypt it.
|
||||
pub encrypted_data: EncryptedFieldWire,
|
||||
pub created_at: String,
|
||||
pub updated_at: String,
|
||||
}
|
||||
|
||||
/// The opaque-encryption wire shape for an `EncryptedField`, matching what the
|
||||
/// client sends and what the server stores (no `encrypted` bool needed on the
|
||||
/// wire — everything is now ciphertext).
|
||||
#[derive(Debug, Clone, Serialize, Deserialize)]
|
||||
pub struct EncryptedFieldWire {
|
||||
pub data: String,
|
||||
pub iv: String,
|
||||
#[serde(default)]
|
||||
pub auth_tag: String,
|
||||
}
|
||||
|
||||
impl std::convert::From<Medication> for MedicationResponse {
|
||||
fn from(m: Medication) -> Self {
|
||||
// The stored data is a JSON string; tolerate old/malformed rows by
|
||||
// falling back to empty defaults rather than failing the whole response.
|
||||
let data: MedicationData =
|
||||
serde_json::from_str(&m.medication_data.data).unwrap_or_default();
|
||||
|
||||
MedicationResponse {
|
||||
id: m.id.map(|o| o.to_hex()).unwrap_or_default(),
|
||||
medication_id: m.medication_id,
|
||||
user_id: m.user_id,
|
||||
profile_id: m.profile_id,
|
||||
name: data.name,
|
||||
dosage: data.dosage,
|
||||
frequency: data.frequency,
|
||||
route: data.route,
|
||||
reason: data.reason,
|
||||
instructions: data.instructions,
|
||||
side_effects: data.side_effects,
|
||||
prescribed_by: data.prescribed_by,
|
||||
prescribed_date: data.prescribed_date,
|
||||
start_date: data.start_date,
|
||||
end_date: data.end_date,
|
||||
notes: data.notes,
|
||||
tags: data.tags,
|
||||
active: m.active,
|
||||
encrypted_data: EncryptedFieldWire {
|
||||
data: m.medication_data.data,
|
||||
iv: m.medication_data.iv,
|
||||
auth_tag: m.medication_data.auth_tag,
|
||||
},
|
||||
created_at: system_time_to_rfc3339(m.created_at.to_system_time()),
|
||||
updated_at: system_time_to_rfc3339(m.updated_at.to_system_time()),
|
||||
}
|
||||
|
|
@ -258,52 +220,21 @@ pub struct MedicationDose {
|
|||
|
||||
#[derive(Debug, Deserialize)]
|
||||
pub struct CreateMedicationRequest {
|
||||
pub name: String,
|
||||
pub dosage: String,
|
||||
pub frequency: String,
|
||||
pub route: String,
|
||||
pub reason: Option<String>,
|
||||
pub instructions: Option<String>,
|
||||
pub side_effects: Option<Vec<String>>,
|
||||
pub prescribed_by: Option<String>,
|
||||
pub prescribed_date: Option<String>,
|
||||
pub start_date: Option<String>,
|
||||
pub end_date: Option<String>,
|
||||
pub notes: Option<String>,
|
||||
pub tags: Option<Vec<String>>,
|
||||
pub reminder_times: Option<Vec<String>>,
|
||||
pub profile_id: String,
|
||||
/// Opaque client-encrypted data blob. The server stores this verbatim.
|
||||
pub encrypted_data: EncryptedFieldWire,
|
||||
/// Whether the medication is active on creation (defaults to true).
|
||||
#[serde(default = "default_true")]
|
||||
pub active: bool,
|
||||
|
||||
/// Pill identification (Phase 2.8 - optional)
|
||||
#[serde(rename = "pill_identification")]
|
||||
pub pill_identification: Option<PillIdentification>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Deserialize)]
|
||||
pub struct UpdateMedicationRequest {
|
||||
pub name: Option<String>,
|
||||
pub dosage: Option<String>,
|
||||
pub frequency: Option<String>,
|
||||
pub route: Option<String>,
|
||||
pub reason: Option<String>,
|
||||
pub instructions: Option<String>,
|
||||
pub side_effects: Option<Vec<String>>,
|
||||
pub prescribed_by: Option<String>,
|
||||
pub prescribed_date: Option<String>,
|
||||
pub start_date: Option<String>,
|
||||
pub end_date: Option<String>,
|
||||
pub notes: Option<String>,
|
||||
pub tags: Option<Vec<String>>,
|
||||
pub reminder_times: Option<Vec<String>>,
|
||||
/// Replacement opaque client-encrypted data blob (whole-blob replace — the
|
||||
/// client re-encrypts the full record on edit).
|
||||
pub encrypted_data: Option<EncryptedFieldWire>,
|
||||
/// Set the medication active/inactive.
|
||||
pub active: Option<bool>,
|
||||
|
||||
/// Pill identification (Phase 2.8 - optional)
|
||||
#[serde(rename = "pill_identification")]
|
||||
pub pill_identification: Option<PillIdentification>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Deserialize)]
|
||||
|
|
@ -411,90 +342,24 @@ impl MedicationRepository {
|
|||
|
||||
/// Update by the application-level medication_id (UUID). The API exposes
|
||||
/// medication_id in URLs, not the Mongo _id.
|
||||
/// Whole-blob replace by medication_id (UUID). The client re-encrypts the
|
||||
/// full record and sends the new blob; the server never inspects its contents.
|
||||
pub async fn update_by_medication_id(
|
||||
&self,
|
||||
medication_id: &str,
|
||||
updates: UpdateMedicationRequest,
|
||||
) -> Result<Option<Medication>, Box<dyn std::error::Error>> {
|
||||
let filter = doc! { "medicationId": medication_id };
|
||||
let existing = self.collection.find_one(filter.clone(), None).await?;
|
||||
let Some(existing) = existing else {
|
||||
return Ok(None);
|
||||
};
|
||||
let mut update_doc = doc! { "updatedAt": DateTime::now() };
|
||||
|
||||
let mut data: MedicationData =
|
||||
serde_json::from_str(&existing.medication_data.data).unwrap_or_default();
|
||||
|
||||
if let Some(v) = updates.name {
|
||||
data.name = v;
|
||||
if let Some(blob) = updates.encrypted_data {
|
||||
update_doc.insert("medicationData.data", blob.data);
|
||||
update_doc.insert("medicationData.iv", blob.iv);
|
||||
update_doc.insert("medicationData.authTag", blob.auth_tag);
|
||||
}
|
||||
if let Some(v) = updates.dosage {
|
||||
data.dosage = v;
|
||||
}
|
||||
if let Some(v) = updates.frequency {
|
||||
data.frequency = v;
|
||||
}
|
||||
if let Some(v) = updates.route {
|
||||
data.route = v;
|
||||
}
|
||||
if let Some(v) = updates.reason {
|
||||
data.reason = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.instructions {
|
||||
data.instructions = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.side_effects {
|
||||
data.side_effects = v;
|
||||
}
|
||||
if let Some(v) = updates.prescribed_by {
|
||||
data.prescribed_by = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.prescribed_date {
|
||||
data.prescribed_date = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.start_date {
|
||||
data.start_date = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.end_date {
|
||||
data.end_date = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.notes {
|
||||
data.notes = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.tags {
|
||||
data.tags = v;
|
||||
}
|
||||
// `active` lives on the document, not in the data blob.
|
||||
|
||||
let data_json = serde_json::json!({
|
||||
"name": data.name,
|
||||
"dosage": data.dosage,
|
||||
"frequency": data.frequency,
|
||||
"route": data.route,
|
||||
"reason": data.reason,
|
||||
"instructions": data.instructions,
|
||||
"sideEffects": data.side_effects,
|
||||
"prescribedBy": data.prescribed_by,
|
||||
"prescribedDate": data.prescribed_date,
|
||||
"startDate": data.start_date,
|
||||
"endDate": data.end_date,
|
||||
"notes": data.notes,
|
||||
"tags": data.tags,
|
||||
})
|
||||
.to_string();
|
||||
|
||||
let mut update_doc = doc! {
|
||||
"medicationData.data": data_json,
|
||||
"updatedAt": DateTime::now(),
|
||||
};
|
||||
if let Some(active) = updates.active {
|
||||
update_doc.insert("active", active);
|
||||
}
|
||||
if let Some(pill_identification) = updates.pill_identification {
|
||||
if let Ok(pill_doc) = mongodb::bson::to_document(&pill_identification) {
|
||||
update_doc.insert("pill_identification", pill_doc);
|
||||
}
|
||||
}
|
||||
|
||||
let medication = self
|
||||
.collection
|
||||
|
|
@ -513,97 +378,23 @@ impl MedicationRepository {
|
|||
Ok(result.deleted_count > 0)
|
||||
}
|
||||
|
||||
/// Whole-blob replace by Mongo _id (unused by routes but kept for completeness).
|
||||
pub async fn update(
|
||||
&self,
|
||||
id: &ObjectId,
|
||||
updates: UpdateMedicationRequest,
|
||||
) -> Result<Option<Medication>, Box<dyn std::error::Error>> {
|
||||
// The stored shape is `medicationData: { data: "<JSON string>", ... }`.
|
||||
// The previous implementation used dot-notation ("medicationData.name")
|
||||
// which wrote into phantom paths. Instead: load the existing document,
|
||||
// deserialize its data blob, apply the overrides, re-serialize, and
|
||||
// $set the whole `medicationData.data` string.
|
||||
let filter = doc! { "_id": id };
|
||||
let existing = self.collection.find_one(filter.clone(), None).await?;
|
||||
let Some(existing) = existing else {
|
||||
return Ok(None);
|
||||
};
|
||||
let mut update_doc = doc! { "updatedAt": DateTime::now() };
|
||||
|
||||
let mut data: MedicationData =
|
||||
serde_json::from_str(&existing.medication_data.data).unwrap_or_default();
|
||||
|
||||
if let Some(v) = updates.name {
|
||||
data.name = v;
|
||||
if let Some(blob) = updates.encrypted_data {
|
||||
update_doc.insert("medicationData.data", blob.data);
|
||||
update_doc.insert("medicationData.iv", blob.iv);
|
||||
update_doc.insert("medicationData.authTag", blob.auth_tag);
|
||||
}
|
||||
if let Some(v) = updates.dosage {
|
||||
data.dosage = v;
|
||||
}
|
||||
if let Some(v) = updates.frequency {
|
||||
data.frequency = v;
|
||||
}
|
||||
if let Some(v) = updates.route {
|
||||
data.route = v;
|
||||
}
|
||||
if let Some(v) = updates.reason {
|
||||
data.reason = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.instructions {
|
||||
data.instructions = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.side_effects {
|
||||
data.side_effects = v;
|
||||
}
|
||||
if let Some(v) = updates.prescribed_by {
|
||||
data.prescribed_by = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.prescribed_date {
|
||||
data.prescribed_date = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.start_date {
|
||||
data.start_date = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.end_date {
|
||||
data.end_date = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.notes {
|
||||
data.notes = Some(v);
|
||||
}
|
||||
if let Some(v) = updates.tags {
|
||||
data.tags = v;
|
||||
}
|
||||
// `active` lives on the document, not in the data blob.
|
||||
|
||||
// Re-serialize with the SAME camelCase keys the create handler uses, so
|
||||
// reads stay consistent.
|
||||
let data_json = serde_json::json!({
|
||||
"name": data.name,
|
||||
"dosage": data.dosage,
|
||||
"frequency": data.frequency,
|
||||
"route": data.route,
|
||||
"reason": data.reason,
|
||||
"instructions": data.instructions,
|
||||
"sideEffects": data.side_effects,
|
||||
"prescribedBy": data.prescribed_by,
|
||||
"prescribedDate": data.prescribed_date,
|
||||
"startDate": data.start_date,
|
||||
"endDate": data.end_date,
|
||||
"notes": data.notes,
|
||||
"tags": data.tags,
|
||||
})
|
||||
.to_string();
|
||||
|
||||
let mut update_doc = doc! {
|
||||
"medicationData.data": data_json,
|
||||
"updatedAt": DateTime::now(),
|
||||
};
|
||||
if let Some(active) = updates.active {
|
||||
update_doc.insert("active", active);
|
||||
}
|
||||
if let Some(pill_identification) = updates.pill_identification {
|
||||
if let Ok(pill_doc) = mongodb::bson::to_document(&pill_identification) {
|
||||
update_doc.insert("pill_identification", pill_doc);
|
||||
}
|
||||
}
|
||||
|
||||
let medication = self
|
||||
.collection
|
||||
|
|
@ -629,59 +420,18 @@ mod tests {
|
|||
use crate::models::health_data::EncryptedField;
|
||||
|
||||
#[test]
|
||||
fn medication_data_deserializes_camel_case_blob() {
|
||||
// This is the exact shape the create handler packs into the data string.
|
||||
let json = r#"{
|
||||
"name": "Ibuprofen",
|
||||
"dosage": "200mg",
|
||||
"frequency": "as needed",
|
||||
"route": "oral",
|
||||
"reason": null,
|
||||
"instructions": "with food",
|
||||
"sideEffects": ["nausea"],
|
||||
"prescribedBy": "Dr. House",
|
||||
"prescribedDate": "2026-01-01",
|
||||
"startDate": "2026-01-02",
|
||||
"endDate": null,
|
||||
"notes": "take care",
|
||||
"tags": ["pain"]
|
||||
}"#;
|
||||
let data: MedicationData = serde_json::from_str(json).unwrap();
|
||||
assert_eq!(data.name, "Ibuprofen");
|
||||
assert_eq!(data.side_effects, vec!["nausea".to_string()]);
|
||||
assert_eq!(data.prescribed_by.as_deref(), Some("Dr. House"));
|
||||
assert_eq!(data.tags, vec!["pain".to_string()]);
|
||||
assert_eq!(data.route, "oral");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn medication_data_defaults_empty_arrays_for_missing_keys() {
|
||||
// Old rows may lack sideEffects/tags; the #[default] should yield empty vecs.
|
||||
let json = r#"{"name":"X","dosage":"1","frequency":"daily","route":"oral"}"#;
|
||||
let data: MedicationData = serde_json::from_str(json).unwrap();
|
||||
assert!(data.side_effects.is_empty());
|
||||
assert!(data.tags.is_empty());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn medication_response_flattens_and_uses_snake_case_fields() {
|
||||
let blob = serde_json::json!({
|
||||
"name": "Aspirin", "dosage": "100mg", "frequency": "daily", "route": "oral",
|
||||
"reason": null, "instructions": null,
|
||||
"sideEffects": ["bleeding"], "prescribedBy": null, "prescribedDate": null,
|
||||
"startDate": null, "endDate": null, "notes": null, "tags": []
|
||||
})
|
||||
.to_string();
|
||||
|
||||
fn medication_response_echoes_opaque_blob_unchanged() {
|
||||
// Zero-knowledge: the server returns the ciphertext blob verbatim; it
|
||||
// never inspects the contents. The blob here is opaque base64 ciphertext.
|
||||
let med = Medication {
|
||||
id: Some(ObjectId::new()),
|
||||
medication_id: "med-123".to_string(),
|
||||
user_id: "user-1".to_string(),
|
||||
profile_id: "profile_user-1".to_string(),
|
||||
medication_data: EncryptedField {
|
||||
data: blob,
|
||||
encrypted: false,
|
||||
iv: String::new(),
|
||||
data: "opaque-base64-ciphertext".to_string(),
|
||||
encrypted: true,
|
||||
iv: "base64-iv".to_string(),
|
||||
auth_tag: String::new(),
|
||||
},
|
||||
reminders: vec![],
|
||||
|
|
@ -693,35 +443,10 @@ mod tests {
|
|||
|
||||
let resp: MedicationResponse = med.into();
|
||||
assert_eq!(resp.medication_id, "med-123");
|
||||
assert_eq!(resp.name, "Aspirin");
|
||||
assert_eq!(resp.side_effects, vec!["bleeding".to_string()]);
|
||||
assert_eq!(resp.encrypted_data.data, "opaque-base64-ciphertext");
|
||||
assert_eq!(resp.encrypted_data.iv, "base64-iv");
|
||||
assert!(resp.active);
|
||||
assert!(!resp.id.is_empty());
|
||||
assert!(!resp.created_at.is_empty()); // ISO string
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn medication_response_tolerates_malformed_data_blob() {
|
||||
let med = Medication {
|
||||
id: None,
|
||||
medication_id: "m".to_string(),
|
||||
user_id: "u".to_string(),
|
||||
profile_id: "p".to_string(),
|
||||
medication_data: EncryptedField {
|
||||
data: "not valid json".to_string(),
|
||||
encrypted: false,
|
||||
iv: String::new(),
|
||||
auth_tag: String::new(),
|
||||
},
|
||||
reminders: vec![],
|
||||
created_at: DateTime::now(),
|
||||
updated_at: DateTime::now(),
|
||||
active: true,
|
||||
pill_identification: None,
|
||||
};
|
||||
// Should NOT panic — falls back to defaults.
|
||||
let resp: MedicationResponse = med.into();
|
||||
assert_eq!(resp.name, "");
|
||||
assert!(resp.active);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -60,21 +60,21 @@ impl ProfileRepository {
|
|||
.await
|
||||
}
|
||||
|
||||
/// Update the profile's display name. NOTE: name is currently stored
|
||||
/// plaintext — the model's nameIv/nameAuthTag fields anticipate encryption
|
||||
/// that isn't implemented yet (TODO).
|
||||
pub async fn update_name(
|
||||
/// Update the profile's display name (opaque client-encrypted blob).
|
||||
pub async fn update_encrypted_name(
|
||||
&self,
|
||||
user_id: &str,
|
||||
name: &str,
|
||||
name_data: &str,
|
||||
name_iv: &str,
|
||||
name_auth_tag: &str,
|
||||
) -> mongodb::error::Result<Option<Profile>> {
|
||||
self.collection
|
||||
.find_one_and_update(
|
||||
doc! { "userId": user_id },
|
||||
doc! { "$set": {
|
||||
"name": name,
|
||||
"nameIv": "",
|
||||
"nameAuthTag": "",
|
||||
"name": name_data,
|
||||
"nameIv": name_iv,
|
||||
"nameAuthTag": name_auth_tag,
|
||||
"updatedAt": DateTime::now()
|
||||
}},
|
||||
None,
|
||||
|
|
|
|||
81
web/normogen-web/src/crypto/cipher.ts
Normal file
81
web/normogen-web/src/crypto/cipher.ts
Normal file
|
|
@ -0,0 +1,81 @@
|
|||
/**
|
||||
* AES-GCM encrypt/decrypt over the Web Crypto API (no dependencies).
|
||||
*
|
||||
* Ciphertext and IV are returned as base64 strings so they map directly onto
|
||||
* the backend's `EncryptedField { data, iv, auth_tag }` wire shape.
|
||||
*/
|
||||
|
||||
const encoder = new TextEncoder();
|
||||
const decoder = new TextDecoder();
|
||||
const b64 = {
|
||||
encode(bytes: Uint8Array): string {
|
||||
let bin = '';
|
||||
for (const b of bytes) bin += String.fromCharCode(b);
|
||||
return btoa(bin);
|
||||
},
|
||||
decode(str: string): Uint8Array {
|
||||
const bin = atob(str);
|
||||
const bytes = new Uint8Array(bin.length);
|
||||
for (let i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);
|
||||
return bytes;
|
||||
},
|
||||
};
|
||||
|
||||
/** Random 12-byte IV for AES-GCM. */
|
||||
function randomIv(): Uint8Array {
|
||||
return crypto.getRandomValues(new Uint8Array(12));
|
||||
}
|
||||
|
||||
export interface CipherPayload {
|
||||
/** base64 ciphertext */
|
||||
data: string;
|
||||
/** base64 12-byte IV */
|
||||
iv: string;
|
||||
}
|
||||
|
||||
/** Encrypt a UTF-8 string under the given AES-GCM key. */
|
||||
export async function encrypt(
|
||||
plaintext: string,
|
||||
key: CryptoKey,
|
||||
): Promise<CipherPayload> {
|
||||
const iv = randomIv();
|
||||
const ciphertext = await crypto.subtle.encrypt(
|
||||
{ name: 'AES-GCM', iv },
|
||||
key,
|
||||
encoder.encode(plaintext),
|
||||
);
|
||||
return {
|
||||
data: b64.encode(new Uint8Array(ciphertext)),
|
||||
iv: b64.encode(iv),
|
||||
};
|
||||
}
|
||||
|
||||
/** Decrypt a base64 payload. Throws on tamper / wrong key. */
|
||||
export async function decrypt(
|
||||
payload: CipherPayload,
|
||||
key: CryptoKey,
|
||||
): Promise<string> {
|
||||
const iv = b64.decode(payload.iv);
|
||||
const plaintext = await crypto.subtle.decrypt(
|
||||
{ name: 'AES-GCM', iv },
|
||||
key,
|
||||
b64.decode(payload.data),
|
||||
);
|
||||
return decoder.decode(plaintext);
|
||||
}
|
||||
|
||||
/** Encrypt a JSON-serializable object. */
|
||||
export async function encryptJson<T>(
|
||||
obj: T,
|
||||
key: CryptoKey,
|
||||
): Promise<CipherPayload> {
|
||||
return encrypt(JSON.stringify(obj), key);
|
||||
}
|
||||
|
||||
/** Decrypt a payload and JSON.parse into T. Throws on tamper / wrong key / bad JSON. */
|
||||
export async function decryptJson<T>(
|
||||
payload: CipherPayload,
|
||||
key: CryptoKey,
|
||||
): Promise<T> {
|
||||
return JSON.parse(await decrypt(payload, key)) as T;
|
||||
}
|
||||
16
web/normogen-web/src/crypto/index.ts
Normal file
16
web/normogen-web/src/crypto/index.ts
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
export {
|
||||
deriveAuthAndEncKeys,
|
||||
setEncKey,
|
||||
getEncKey,
|
||||
clearEncKey,
|
||||
hasEncKey,
|
||||
AUTH_SALT,
|
||||
ENC_SALT,
|
||||
} from './keys';
|
||||
export {
|
||||
encrypt,
|
||||
decrypt,
|
||||
encryptJson,
|
||||
decryptJson,
|
||||
type CipherPayload,
|
||||
} from './cipher';
|
||||
98
web/normogen-web/src/crypto/keys.ts
Normal file
98
web/normogen-web/src/crypto/keys.ts
Normal file
|
|
@ -0,0 +1,98 @@
|
|||
/**
|
||||
* Zero-knowledge key derivation.
|
||||
*
|
||||
* From the user's password we derive TWO independent values via PBKDF2:
|
||||
*
|
||||
* - `authSecret`: base64 bytes sent to the server as the "password". The
|
||||
* server PBKDF2-hashes it (as it always has). The server can never derive
|
||||
* the encryption key from this value.
|
||||
* - `encKey`: an AES-GCM CryptoKey kept in memory only (never persisted,
|
||||
* never transmitted). Used to encrypt/decrypt all user data.
|
||||
*
|
||||
* Two separate PBKDF2 passes with app-wide domain-separation salts prevent the
|
||||
* server from deriving `encKey` even if it logs or leaks `authSecret`.
|
||||
*/
|
||||
|
||||
const PBKDF2_ITERATIONS = 150_000;
|
||||
const KEY_BITS = 256; // AES-256
|
||||
|
||||
const encoder = new TextEncoder();
|
||||
|
||||
export const AUTH_SALT = 'normogen-auth-v1';
|
||||
export const ENC_SALT = 'normogen-enc-v1';
|
||||
|
||||
/**
|
||||
* Derive the auth secret (base64) and encryption key (CryptoKey) from a password.
|
||||
*/
|
||||
export async function deriveAuthAndEncKeys(password: string): Promise<{
|
||||
authSecret: string;
|
||||
encKey: CryptoKey;
|
||||
}> {
|
||||
const passwordKey = await crypto.subtle.importKey(
|
||||
'raw',
|
||||
encoder.encode(password),
|
||||
'PBKDF2',
|
||||
false,
|
||||
['deriveBits'],
|
||||
);
|
||||
|
||||
// Auth secret: 32 raw bytes, base64-encoded for transport.
|
||||
const authBits = await crypto.subtle.deriveBits(
|
||||
{ name: 'PBKDF2', salt: encoder.encode(AUTH_SALT), iterations: PBKDF2_ITERATIONS, hash: 'SHA-256' },
|
||||
passwordKey,
|
||||
KEY_BITS,
|
||||
);
|
||||
const authSecret = base64(new Uint8Array(authBits));
|
||||
|
||||
// Encryption key: importable AES-GCM key, non-extractable.
|
||||
const encBits = await crypto.subtle.deriveBits(
|
||||
{ name: 'PBKDF2', salt: encoder.encode(ENC_SALT), iterations: PBKDF2_ITERATIONS, hash: 'SHA-256' },
|
||||
passwordKey,
|
||||
KEY_BITS,
|
||||
);
|
||||
const encKey = await crypto.subtle.importKey(
|
||||
'raw',
|
||||
encBits,
|
||||
{ name: 'AES-GCM' },
|
||||
false,
|
||||
['encrypt', 'decrypt'],
|
||||
);
|
||||
|
||||
return { authSecret, encKey };
|
||||
}
|
||||
|
||||
function base64(bytes: Uint8Array): string {
|
||||
let bin = '';
|
||||
for (const b of bytes) bin += String.fromCharCode(b);
|
||||
return btoa(bin);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// In-memory encryption-key store.
|
||||
//
|
||||
// The encKey lives only in memory for the lifetime of the authenticated
|
||||
// session (the tab). It is deliberately NOT persisted — losing the tab or
|
||||
// closing the browser requires re-entering the password to re-derive it.
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
let currentEncKey: CryptoKey | null = null;
|
||||
|
||||
/** Set the session encryption key (called on login/register). */
|
||||
export function setEncKey(key: CryptoKey): void {
|
||||
currentEncKey = key;
|
||||
}
|
||||
|
||||
/** Get the session encryption key, or null if not authenticated. */
|
||||
export function getEncKey(): CryptoKey | null {
|
||||
return currentEncKey;
|
||||
}
|
||||
|
||||
/** Clear the session encryption key (called on logout). */
|
||||
export function clearEncKey(): void {
|
||||
currentEncKey = null;
|
||||
}
|
||||
|
||||
/** True if a session encryption key is available (i.e. the user can encrypt/decrypt). */
|
||||
export function hasEncKey(): boolean {
|
||||
return currentEncKey !== null;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue