# Alert & agent-action rules (ADR-007, ADR-008).
#
# Split of responsibilities:
#   * This file DECLARES the rules: id, clinical description, thresholds/windows (`params`), which actions the
#     rule produces (type, level, extra params) and the short Russian reason shown on the doctor dashboard.
#     A psychiatrist can change thresholds, levels, actions and texts here without touching code.
#   * `app/core/rules.py` IMPLEMENTS the predicate of each rule as a Python function registered under the
#     same `id` (`@evaluator("<id>")`). The function reads only the patient snapshot and `params` from here.
#     Adding a new rule = new YAML entry + new evaluator; an id without an evaluator fails at load time.
#
# Fields:
#   id          — stable rule id; also the default alert/reason code (dedup key, stored with the alert).
#   description — what and why (for the reviewer/jury); not shown to patients.
#   enabled     — false switches the rule off without deleting it.
#   params      — thresholds/windows passed to the evaluator; also available in `reason_ru` as {name}.
#   actions     — produced in this order when the predicate fires. `level` is info|moderate|high|acute.
#                 Action `params` are merged with values computed by the evaluator.
#   reason_ru   — short text for the doctor (str.format with params + evaluator values).
#
# Dedup: if a rule produces an `alert` whose code is already open (not acked by the doctor), the whole rule
# is silent — no repeated alert, no repeated med_info/reach_out. `crisis` is never suppressed.
#
# Starting thresholds are from SPEC §6, CLINICAL_MODULES.md and the demo persona; final values are approved
# by the team psychiatrist.

rules:
  # ---------------------------------------------------------------- suicide risk → crisis (red, ADR-006)
  - id: phq9_item9
    description: >
      PHQ-9 item 9 (thoughts of death/self-harm) >= 1 in a recent PHQ-9. Always a crisis: fixed safety
      script, safety plan on screen, C-SSRS screening, immediate escalation to the doctor on duty.
    params: {threshold: 1, recent_hours: 24}
    actions:
      - {type: crisis, level: acute}
      - {type: show_safety_plan}
      - {type: schedule_scale, params: {scale: cssrs_screen, scheduled: false}}
    reason_ru: "PHQ-9 п.9 = {item9} (мысли о смерти/самоповреждении)"

  - id: cssrs_high
    description: >
      C-SSRS: suicidal ideation with intent/plan or suicidal behaviour (risk "high") → urgent escalation,
      safety plan and crisis contacts on screen.
    params: {}
    actions:
      - {type: crisis, level: acute}
      - {type: show_safety_plan}
    reason_ru: "C-SSRS: высокий риск (намерение/план или поведение)"

  - id: weapon_access_risk
    enabled: false   # team decision 2026-10-04: weapon ownership is common in Russia — the answer triggers nothing
    description: >
      Access to weapons together with any suicide-risk signal (recent PHQ-9 item 9 >= 1 or C-SSRS >= moderate).
      Means restriction is one of the most evidence-based suicide-prevention measures → crisis safety block.
    params: {item9_threshold: 1, cssrs_min: moderate, recent_hours: 24}
    actions:
      - {type: crisis, level: acute}
      - {type: show_safety_plan, params: {block: means_restriction}}
    reason_ru: "Доступ к оружию при сигнале суицидального риска"

  - id: cssrs_moderate
    description: >
      C-SSRS moderate (ideation without plan/intent) = SPEC "Safety POSSIBLE" → doctor within 24 h.
    params: {}
    actions:
      - {type: alert, level: high}
    reason_ru: "C-SSRS: умеренный риск, психиатр — ориентир 24 ч"

  # ---------------------------------------------------------------- scale thresholds (yellow)
  - id: phq9_severe
    description: Latest PHQ-9 total in the severe range (>= 20) → doctor within 24 h.
    params: {threshold: 20}
    actions:
      - {type: alert, level: high}
    reason_ru: "PHQ-9 = {total} (тяжёлая депрессия, порог {threshold})"

  - id: pcl5_severe
    description: >
      Latest PCL-5 total >= 50 → planned specialist review. Not a priority appointment by itself: risk and flags
      come first, scales second (clinical review 2026-10-04).
    params: {threshold: 50}
    actions:
      - {type: alert, level: moderate}
    reason_ru: "PCL-5 = {total} (порог {threshold})"

  - id: phq9_rise
    description: PHQ-9 rose by >= 5 points between the two latest measurements → doctor within 24 h.
    params: {min_rise: 5}
    actions:
      - {type: alert, level: high}
    reason_ru: "Рост PHQ-9 {previous} → {total} (+{rise})"

  - id: pcl5_rise
    description: PCL-5 rose by >= 10 points between the two latest measurements (veteran module) → doctor.
    params: {min_rise: 10}
    actions:
      - {type: alert, level: high}
    reason_ru: "Рост PCL-5 {previous} → {total} (+{rise})"

  - id: auditc_positive
    description: >
      AUDIT-C positive screen (>= 4 men / >= 3 women). Alcohol is a suicide risk factor and interacts with
      antidepressants → flag for the visit, daily alcohol question.
    params: {threshold_m: 4, threshold_f: 3}
    actions:
      - {type: alert, level: moderate}
    reason_ru: "AUDIT-C = {total} (положительный скрининг, порог {threshold})"

  # ---------------------------------------------------------------- medication adherence
  - id: quit_intent
    description: >
      Patient says they want to stop the medication (extracted from free text), or skips the dose after having
      expressed that intent within the window. Delayed SSRI effect (2–4 weeks) is the usual reason → explain,
      advise not to stop without the doctor, notify the doctor.
    params: {window_days: 7}
    actions:
      - {type: alert, level: high}
      - {type: med_info, params: {topic: delayed_effect}}
    reason_ru: "Намерение прекратить приём препарата"

  - id: missed_doses_7d
    description: >
      >= 3 days with a missed/skipped dose in the last 7 days → check-in about the reasons, flag for the visit.
    params: {threshold: 3, window_days: 7}
    actions:
      - {type: alert, level: moderate}
      - {type: reach_out, params: {topic: missed_doses}}
    reason_ru: "Пропуски приёма: {count} из {window_days} дней"

  - id: side_effect_3d
    description: >
      Side-effect complaints on 3 consecutive days (e.g. SSRI nausea, persona day 4) → flag for the doctor.
    params: {consecutive_days: 3}
    actions:
      - {type: alert, level: moderate}
    reason_ru: "Побочные эффекты {consecutive_days} дня подряд: {effects}"

  # ---------------------------------------------------------------- daily check-in patterns
  - id: sleep_lt4_3n
    description: Sleep < 4 h for 3 consecutive nights (F_Y6) → flag for the doctor.
    params: {consecutive_days: 3}
    actions:
      - {type: alert, level: moderate}
    reason_ru: "Сон < 4 ч {consecutive_days} ночи подряд"

  - id: alcohol_3d
    description: >
      Alcohol on 3 consecutive days (F_Y5) → information about alcohol/antidepressant interaction,
      flag for the doctor, suggest an earlier visit.
    params: {consecutive_days: 3}
    actions:
      - {type: alert, level: moderate}
      - {type: med_info, params: {topic: alcohol_interaction}}
      - {type: suggest_visit, params: {reason: alcohol}}
    reason_ru: "Алкоголь {consecutive_days} дня подряд"

  - id: mood_low_3d
    description: >
      Mood <= 3 (0–10) on 3 consecutive days → unscheduled PHQ-9 (ADR-002). Not an alert by itself; skipped if
      an unscheduled PHQ-9 was already taken within the cooldown.
    params: {threshold: 3, consecutive_days: 3, cooldown_days: 7}
    actions:
      - {type: schedule_scale, params: {scale: phq9, scheduled: false}}
    reason_ru: "Настроение ≤ {threshold} {consecutive_days} дня подряд → внеплановый PHQ-9"

  - id: no_contact_3d
    description: >
      No message from the patient for > 3 days. Silence itself is a risk signal → grey flag, caring contact.
    params: {days: 3}
    actions:
      - {type: alert, level: info}
      - {type: reach_out, params: {topic: silence}}
    reason_ru: "Нет ответа пациента {silent_days} дн."

  - id: young_adult_start
    description: >
      Age < 25 in the first 4 weeks of antidepressant therapy: possible increase of suicidal thoughts (FDA
      boxed warning) → enhanced monitoring (more frequent check-ins and C-SSRS).
    params: {age_below: 25, max_therapy_day: 28}
    actions:
      - {type: enhanced_monitoring, level: info}
    reason_ru: "Возраст < 25, первые 4 недели терапии: усиленный мониторинг"