feat: Phase 0b - add nutrition focus area category (migration 033)

backend/migrations/033_nutrition_focus_areas.sql

@@ -0,0 +1,97 @@
+-- Migration 033: Nutrition Focus Areas
+-- Date: 2026-03-28
+-- Purpose: Add missing nutrition category to complete focus area coverage
+
+-- ============================================================================
+-- Part 1: Add Nutrition Focus Areas
+-- ============================================================================
+
+INSERT INTO focus_area_definitions (key, name_de, name_en, icon, category, description) VALUES
+-- Nutrition Category
+('protein_intake', 'Proteinzufuhr', 'Protein Intake', '🥩', 'nutrition', 'Ausreichend Protein für Muskelaufbau/-erhalt'),
+('calorie_balance', 'Kalorienbilanz', 'Calorie Balance', '⚖️', 'nutrition', 'Energiebilanz passend zum Ziel (Defizit/Überschuss)'),
+('macro_consistency', 'Makro-Konsistenz', 'Macro Consistency', '📊', 'nutrition', 'Gleichmäßige Makronährstoff-Verteilung'),
+('meal_timing', 'Mahlzeiten-Timing', 'Meal Timing', '⏰', 'nutrition', 'Regelmäßige Mahlzeiten und optimales Timing'),
+('hydration', 'Flüssigkeitszufuhr', 'Hydration', '💧', 'nutrition', 'Ausreichende Flüssigkeitsaufnahme')
+ON CONFLICT (key) DO NOTHING;
+
+-- ============================================================================
+-- Part 2: Auto-Mapping for Nutrition-Related Goals
+-- ============================================================================
+
+-- Helper function to get focus_area_id by key
+CREATE OR REPLACE FUNCTION get_focus_area_id(area_key VARCHAR)
+RETURNS UUID AS $$
+BEGIN
+    RETURN (SELECT id FROM focus_area_definitions WHERE key = area_key LIMIT 1);
+END;
+$$ LANGUAGE plpgsql;
+
+-- Weight Loss goals → calorie_balance (40%) + protein_intake (30%)
+-- (Already mapped to weight_loss in migration 031, adding nutrition aspects)
+INSERT INTO goal_focus_contributions (goal_id, focus_area_id, contribution_weight)
+SELECT g.id, fa.id,
+    CASE fa.key
+        WHEN 'calorie_balance' THEN 40.00
+        WHEN 'protein_intake' THEN 30.00
+    END
+FROM goals g
+CROSS JOIN focus_area_definitions fa
+WHERE g.goal_type = 'weight'
+  AND fa.key IN ('calorie_balance', 'protein_intake')
+ON CONFLICT (goal_id, focus_area_id) DO NOTHING;
+
+-- Body Fat goals → calorie_balance (30%) + protein_intake (40%)
+INSERT INTO goal_focus_contributions (goal_id, focus_area_id, contribution_weight)
+SELECT g.id, fa.id,
+    CASE fa.key
+        WHEN 'calorie_balance' THEN 30.00
+        WHEN 'protein_intake' THEN 40.00
+    END
+FROM goals g
+CROSS JOIN focus_area_definitions fa
+WHERE g.goal_type = 'body_fat'
+  AND fa.key IN ('calorie_balance', 'protein_intake')
+ON CONFLICT (goal_id, focus_area_id) DO NOTHING;
+
+-- Lean Mass goals → protein_intake (60%) + calorie_balance (20%)
+INSERT INTO goal_focus_contributions (goal_id, focus_area_id, contribution_weight)
+SELECT g.id, fa.id,
+    CASE fa.key
+        WHEN 'protein_intake' THEN 60.00
+        WHEN 'calorie_balance' THEN 20.00
+    END
+FROM goals g
+CROSS JOIN focus_area_definitions fa
+WHERE g.goal_type = 'lean_mass'
+  AND fa.key IN ('protein_intake', 'calorie_balance')
+ON CONFLICT (goal_id, focus_area_id) DO NOTHING;
+
+-- Strength goals → protein_intake (20%)
+INSERT INTO goal_focus_contributions (goal_id, focus_area_id, contribution_weight)
+SELECT g.id, get_focus_area_id('protein_intake'), 20.00
+FROM goals g
+WHERE g.goal_type = 'strength'
+ON CONFLICT (goal_id, focus_area_id) DO NOTHING;
+
+-- Cleanup helper function
+DROP FUNCTION IF EXISTS get_focus_area_id(VARCHAR);
+
+-- ============================================================================
+-- Summary
+-- ============================================================================
+
+COMMENT ON COLUMN focus_area_definitions.category IS
+'Categories: body_composition, training, endurance, coordination, mental, recovery, health, nutrition';
+
+-- Count nutrition focus areas
+DO $$
+DECLARE
+    nutrition_count INT;
+BEGIN
+    SELECT COUNT(*) INTO nutrition_count
+    FROM focus_area_definitions
+    WHERE category = 'nutrition';
+
+    RAISE NOTICE 'Migration 033 complete: % nutrition focus areas added', nutrition_count;
+END $$;