Add AI-powered nutrition and plan modules

Introduces DSPy-based nutrition and plan generation modules, including image analysis for nutritional info and personalized diet/exercise plans. Adds new API endpoints for health metrics/goals, nutrition image analysis, and plan management. Updates models, schemas, and backend structure to support these features, and includes initial training data and configuration for prompt optimization.

backend/app/api/v1/endpoints/health.py

@@ -1,35 +1,80 @@
+from datetime import datetime
 from typing import Any, List
-from fastapi import APIRouter, Depends, HTTPException
-from sqlmodel import Session, select
-from app.api import deps
-from app.models.health import HealthMetric
+
+from fastapi import APIRouter, Depends
 from pydantic import BaseModel
+from sqlmodel import Session, select
+
+from app.api import deps
+from app.models.health import HealthGoal, HealthMetric
 
 router = APIRouter()
 
+
 class HealthMetricCreate(BaseModel):
     metric_type: str
     value: float
     unit: str
-    user_id: int # TODO: remove when auth is fully integrated
 
-@router.post("/", response_model=HealthMetric)
+
+class HealthGoalCreate(BaseModel):
+    goal_type: str
+    target_value: float
+    target_date: datetime | None = None
+
+
+@router.post("/metrics", response_model=HealthMetric)
 def create_metric(
     *,
     session: Session = Depends(deps.get_session),
+    current_user: deps.CurrentUser,
     metric_in: HealthMetricCreate,
 ) -> Any:
-    metric = HealthMetric(metric_type=metric_in.metric_type, value=metric_in.value, unit=metric_in.unit, user_id=metric_in.user_id)
+    metric = HealthMetric(
+        metric_type=metric_in.metric_type, value=metric_in.value, unit=metric_in.unit, user_id=current_user.id
+    )
     session.add(metric)
     session.commit()
     session.refresh(metric)
     return metric
 
-@router.get("/{user_id}", response_model=List[HealthMetric])
+
+@router.get("/metrics", response_model=List[HealthMetric])
 def read_metrics(
-    user_id: int,
+    current_user: deps.CurrentUser,
     session: Session = Depends(deps.get_session),
 ) -> Any:
-    statement = select(HealthMetric).where(HealthMetric.user_id == user_id)
+    statement = (
+        select(HealthMetric).where(HealthMetric.user_id == current_user.id).order_by(HealthMetric.timestamp.desc())
+    )
     metrics = session.exec(statement).all()
     return metrics
+
+
+@router.post("/goals", response_model=HealthGoal)
+def create_goal(
+    *,
+    session: Session = Depends(deps.get_session),
+    current_user: deps.CurrentUser,
+    goal_in: HealthGoalCreate,
+) -> Any:
+    goal = HealthGoal(
+        goal_type=goal_in.goal_type,
+        target_value=goal_in.target_value,
+        target_date=goal_in.target_date,
+        user_id=current_user.id,
+    )
+    session.add(goal)
+    session.commit()
+    session.refresh(goal)
+    return goal
+
+
+@router.get("/goals", response_model=List[HealthGoal])
+def read_goals(
+    current_user: deps.CurrentUser,
+    session: Session = Depends(deps.get_session),
+) -> Any:
+    statement = select(HealthGoal).where(HealthGoal.user_id == current_user.id)
+    goals = session.exec(statement).all()
+    return goals