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"""
Health Data Store - Persistent storage for health data
Uses JSON files for simplicity, can be upgraded to SQLAlchemy + PostgreSQL
"""
import json
import os
from datetime import datetime, timedelta
from typing import List, Optional, Dict, Any
from pathlib import Path
from .models import (
UserHealthProfile, HealthRecord, UserPreferences,
FitnessProgress, HealthMetrics
)
class HealthDataStore:
"""Persistent storage for all health data"""
def __init__(self, data_dir: str = "health_data/storage"):
self.data_dir = Path(data_dir)
self.data_dir.mkdir(parents=True, exist_ok=True)
# Create subdirectories
(self.data_dir / "profiles").mkdir(exist_ok=True)
(self.data_dir / "records").mkdir(exist_ok=True)
(self.data_dir / "preferences").mkdir(exist_ok=True)
(self.data_dir / "fitness").mkdir(exist_ok=True)
(self.data_dir / "metrics").mkdir(exist_ok=True)
# ===== User Profile Operations =====
def save_user_profile(self, profile: UserHealthProfile) -> None:
"""Save user profile to storage"""
profile.updated_at = datetime.now()
path = self.data_dir / "profiles" / f"{profile.user_id}.json"
with open(path, 'w', encoding='utf-8') as f:
json.dump(profile.to_dict(), f, ensure_ascii=False, indent=2)
def get_user_profile(self, user_id: str) -> Optional[UserHealthProfile]:
"""Get user profile from storage"""
path = self.data_dir / "profiles" / f"{user_id}.json"
if not path.exists():
return None
with open(path, 'r', encoding='utf-8') as f:
data = json.load(f)
return UserHealthProfile.from_dict(data)
def update_user_profile(self, user_id: str, **kwargs) -> None:
"""Update specific fields in user profile"""
profile = self.get_user_profile(user_id)
if not profile:
profile = UserHealthProfile(user_id)
for key, value in kwargs.items():
if hasattr(profile, key):
setattr(profile, key, value)
self.save_user_profile(profile)
# ===== Health History Operations =====
def add_health_record(self, record: HealthRecord) -> None:
"""Add health record to storage"""
user_dir = self.data_dir / "records" / record.user_id
user_dir.mkdir(exist_ok=True)
path = user_dir / f"{record.record_id}.json"
with open(path, 'w', encoding='utf-8') as f:
json.dump(record.to_dict(), f, ensure_ascii=False, indent=2)
def get_health_history(self, user_id: str, days: int = 30) -> List[HealthRecord]:
"""Get health history for user (last N days)"""
user_dir = self.data_dir / "records" / user_id
if not user_dir.exists():
return []
cutoff_date = datetime.now() - timedelta(days=days)
records = []
for file_path in user_dir.glob("*.json"):
with open(file_path, 'r', encoding='utf-8') as f:
data = json.load(f)
record = HealthRecord.from_dict(data)
if record.timestamp >= cutoff_date:
records.append(record)
# Sort by timestamp descending
records.sort(key=lambda r: r.timestamp, reverse=True)
return records
def get_records_by_type(self, user_id: str, record_type: str) -> List[HealthRecord]:
"""Get records of specific type"""
all_records = self.get_health_history(user_id, days=365)
return [r for r in all_records if r.record_type == record_type]
# ===== Preferences Operations =====
def save_preferences(self, prefs: UserPreferences) -> None:
"""Save user preferences"""
prefs.updated_at = datetime.now()
path = self.data_dir / "preferences" / f"{prefs.user_id}.json"
with open(path, 'w', encoding='utf-8') as f:
json.dump(prefs.to_dict(), f, ensure_ascii=False, indent=2)
def get_preferences(self, user_id: str) -> Optional[UserPreferences]:
"""Get user preferences"""
path = self.data_dir / "preferences" / f"{user_id}.json"
if not path.exists():
return None
with open(path, 'r', encoding='utf-8') as f:
data = json.load(f)
return UserPreferences.from_dict(data)
# ===== Fitness Operations =====
def add_fitness_record(self, record: FitnessProgress) -> None:
"""Add fitness record"""
user_dir = self.data_dir / "fitness" / record.user_id
user_dir.mkdir(exist_ok=True)
path = user_dir / f"{record.progress_id}.json"
with open(path, 'w', encoding='utf-8') as f:
json.dump(record.to_dict(), f, ensure_ascii=False, indent=2)
def get_fitness_history(self, user_id: str, days: int = 30) -> List[FitnessProgress]:
"""Get fitness history"""
user_dir = self.data_dir / "fitness" / user_id
if not user_dir.exists():
return []
cutoff_date = datetime.now() - timedelta(days=days)
records = []
for file_path in user_dir.glob("*.json"):
with open(file_path, 'r', encoding='utf-8') as f:
data = json.load(f)
record = FitnessProgress.from_dict(data)
if record.timestamp >= cutoff_date:
records.append(record)
records.sort(key=lambda r: r.timestamp, reverse=True)
return records
# ===== Metrics Operations =====
def add_metric(self, metric: HealthMetrics) -> None:
"""Add health metric"""
user_dir = self.data_dir / "metrics" / metric.user_id
user_dir.mkdir(exist_ok=True)
path = user_dir / f"{metric.metric_id}.json"
with open(path, 'w', encoding='utf-8') as f:
json.dump(metric.to_dict(), f, ensure_ascii=False, indent=2)
def get_metrics(self, user_id: str, metric_type: Optional[str] = None) -> List[HealthMetrics]:
"""Get health metrics"""
user_dir = self.data_dir / "metrics" / user_id
if not user_dir.exists():
return []
metrics = []
for file_path in user_dir.glob("*.json"):
with open(file_path, 'r', encoding='utf-8') as f:
data = json.load(f)
metric = HealthMetrics.from_dict(data)
if metric_type is None or metric.metric_type == metric_type:
metrics.append(metric)
metrics.sort(key=lambda m: m.timestamp, reverse=True)
return metrics
# ===== Utility Methods =====
def export_user_data(self, user_id: str) -> Dict[str, Any]:
"""Export all user data"""
profile = self.get_user_profile(user_id)
history = self.get_health_history(user_id, days=365)
preferences = self.get_preferences(user_id)
fitness = self.get_fitness_history(user_id, days=365)
metrics = self.get_metrics(user_id)
return {
'profile': profile.to_dict() if profile else None,
'health_history': [r.to_dict() for r in history],
'preferences': preferences.to_dict() if preferences else None,
'fitness_history': [f.to_dict() for f in fitness],
'metrics': [m.to_dict() for m in metrics],
'exported_at': datetime.now().isoformat()
}
def delete_user_data(self, user_id: str) -> None:
"""Delete all user data (GDPR compliance)"""
import shutil
# Delete profile
profile_path = self.data_dir / "profiles" / f"{user_id}.json"
if profile_path.exists():
profile_path.unlink()
# Delete records
records_dir = self.data_dir / "records" / user_id
if records_dir.exists():
shutil.rmtree(records_dir)
# Delete preferences
prefs_path = self.data_dir / "preferences" / f"{user_id}.json"
if prefs_path.exists():
prefs_path.unlink()
# Delete fitness
fitness_dir = self.data_dir / "fitness" / user_id
if fitness_dir.exists():
shutil.rmtree(fitness_dir)
# Delete metrics
metrics_dir = self.data_dir / "metrics" / user_id
if metrics_dir.exists():
shutil.rmtree(metrics_dir)
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