demo seed change 7

services/production/app/services/production_service.py

@@ -1858,6 +1858,124 @@ class ProductionService:
             )
             raise
 
+    async def get_ai_waste_impact(
+        self,
+        tenant_id: UUID,
+        start_date: datetime,
+        end_date: datetime
+    ) -> Dict[str, Any]:
+        """
+        Get AI impact on waste reduction
+
+        Compares waste rates between AI-assisted and manual batches
+        to demonstrate ROI of AI features for sustainability.
+        """
+        try:
+            async with self.database_manager.get_session() as session:
+                from app.repositories.production_batch_repository import ProductionBatchRepository
+                from sqlalchemy import text
+
+                batch_repo = ProductionBatchRepository(session)
+
+                # Query for AI vs manual batch comparison
+                query = text("""
+                    SELECT
+                        -- AI-assisted batches
+                        COUNT(CASE WHEN is_ai_assisted = true THEN 1 END) as ai_batches,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = true THEN planned_quantity ELSE 0 END), 0) as ai_planned,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = true THEN actual_quantity ELSE 0 END), 0) as ai_actual,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = true THEN waste_quantity ELSE 0 END), 0) as ai_waste,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = true THEN defect_quantity ELSE 0 END), 0) as ai_defects,
+
+                        -- Manual batches
+                        COUNT(CASE WHEN is_ai_assisted = false THEN 1 END) as manual_batches,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = false THEN planned_quantity ELSE 0 END), 0) as manual_planned,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = false THEN actual_quantity ELSE 0 END), 0) as manual_actual,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = false THEN waste_quantity ELSE 0 END), 0) as manual_waste,
+                        COALESCE(SUM(CASE WHEN is_ai_assisted = false THEN defect_quantity ELSE 0 END), 0) as manual_defects
+                    FROM production_batches
+                    WHERE tenant_id = :tenant_id
+                    AND created_at BETWEEN :start_date AND :end_date
+                    AND status IN ('COMPLETED', 'QUALITY_CHECK')
+                """)
+
+                result = await session.execute(
+                    query,
+                    {
+                        'tenant_id': tenant_id,
+                        'start_date': start_date,
+                        'end_date': end_date
+                    }
+                )
+                row = result.fetchone()
+
+                # Calculate waste percentages
+                ai_total_waste = float(row.ai_waste or 0) + float(row.ai_defects or 0)
+                manual_total_waste = float(row.manual_waste or 0) + float(row.manual_defects or 0)
+
+                ai_waste_pct = (ai_total_waste / float(row.ai_planned)) * 100 if row.ai_planned > 0 else 0
+                manual_waste_pct = (manual_total_waste / float(row.manual_planned)) * 100 if row.manual_planned > 0 else 0
+
+                # Calculate reduction
+                waste_reduction_pct = 0
+                if manual_waste_pct > 0:
+                    waste_reduction_pct = ((manual_waste_pct - ai_waste_pct) / manual_waste_pct) * 100
+
+                # Calculate waste avoided
+                if manual_waste_pct > 0 and row.ai_planned > 0:
+                    waste_avoided_kg = (float(row.ai_planned) * (manual_waste_pct / 100)) - ai_total_waste
+                else:
+                    waste_avoided_kg = 0
+
+                # Financial impact (€3.50/kg average waste cost)
+                waste_cost_avoided = waste_avoided_kg * 3.50
+
+                ai_impact_data = {
+                    'ai_batches': {
+                        'count': int(row.ai_batches or 0),
+                        'production_kg': float(row.ai_planned or 0),
+                        'waste_kg': ai_total_waste,
+                        'waste_percentage': round(ai_waste_pct, 2)
+                    },
+                    'manual_batches': {
+                        'count': int(row.manual_batches or 0),
+                        'production_kg': float(row.manual_planned or 0),
+                        'waste_kg': manual_total_waste,
+                        'waste_percentage': round(manual_waste_pct, 2)
+                    },
+                    'impact': {
+                        'waste_reduction_percentage': round(waste_reduction_pct, 1),
+                        'waste_avoided_kg': round(waste_avoided_kg, 2),
+                        'cost_savings_eur': round(waste_cost_avoided, 2),
+                        'annual_projection_eur': round(waste_cost_avoided * 12, 2)
+                    },
+                    'adoption': {
+                        'ai_adoption_rate': round((int(row.ai_batches or 0) / (int(row.ai_batches or 0) + int(row.manual_batches or 1))) * 100, 1),
+                        'recommendation': 'increase_ai_usage' if waste_reduction_pct > 10 else 'monitor'
+                    },
+                    'period': {
+                        'start_date': start_date.isoformat(),
+                        'end_date': end_date.isoformat()
+                    }
+                }
+
+                logger.info(
+                    "AI waste impact calculated",
+                    tenant_id=str(tenant_id),
+                    waste_reduction_pct=waste_reduction_pct,
+                    waste_avoided_kg=waste_avoided_kg
+                )
+
+                return ai_impact_data
+
+        except Exception as e:
+            logger.error(
+                "Error calculating AI waste impact",
+                tenant_id=str(tenant_id),
+                error=str(e)
+            )
+            raise
+
     # ================================================================
     # NEW: ORCHESTRATOR INTEGRATION
     # ================================================================