updates

server/internal/service/daily_overview_service.go

@@ -0,0 +1,86 @@
+package service
+
+import (
+	"context"
+	"go-server/internal/repository"
+)
+
+type DailyOverviewService struct {
+	dailyRepo *repository.DailyOverviewRepository
+}
+
+func NewDailyOverviewService(dailyRepo *repository.DailyOverviewRepository) *DailyOverviewService {
+	return &DailyOverviewService{
+		dailyRepo: dailyRepo,
+	}
+}
+
+// DailyNutrientSummary represents the complete daily overview
+type DailyNutrientSummary struct {
+	NutrientTotals      []repository.NutrientTotal             `json:"nutrientTotals"`
+	ByCategory          map[string][]repository.NutrientTotal  `json:"byCategory"`
+	SupplementBreakdown []repository.SupplementNutrientDetails `json:"supplementBreakdown"`
+	Summary             DailySummaryStats                      `json:"summary"`
+}
+
+type DailySummaryStats struct {
+	TotalNutrients   int `json:"totalNutrients"`
+	TotalSupplements int `json:"totalSupplements"`
+	CategoriesCount  int `json:"categoriesCount"`
+}
+
+// GetDailyOverview returns a comprehensive overview of daily nutrient intake
+func (s *DailyOverviewService) GetDailyOverview(ctx context.Context) (*DailyNutrientSummary, error) {
+	// Get nutrient totals
+	totals, err := s.dailyRepo.GetNutrientTotals(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get breakdown by category
+	byCategory, err := s.dailyRepo.GetNutrientsByCategory(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get supplement breakdown
+	breakdown, err := s.dailyRepo.GetSupplementBreakdown(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	// Calculate summary stats
+	supplementMap := make(map[string]bool)
+	for _, item := range breakdown {
+		supplementMap[item.SupplementName] = true
+	}
+
+	summary := DailySummaryStats{
+		TotalNutrients:   len(totals),
+		TotalSupplements: len(supplementMap),
+		CategoriesCount:  len(byCategory),
+	}
+
+	return &DailyNutrientSummary{
+		NutrientTotals:      totals,
+		ByCategory:          byCategory,
+		SupplementBreakdown: breakdown,
+		Summary:             summary,
+	}, nil
+}
+
+// GetNutrientTotals returns just the aggregated totals
+func (s *DailyOverviewService) GetNutrientTotals(ctx context.Context) ([]repository.NutrientTotal, error) {
+	return s.dailyRepo.GetNutrientTotals(ctx)
+}
+
+// GetSupplementBreakdown returns detailed breakdown by supplement
+func (s *DailyOverviewService) GetSupplementBreakdown(ctx context.Context) ([]repository.SupplementNutrientDetails, error) {
+	return s.dailyRepo.GetSupplementBreakdown(ctx)
+}
+
+// ExecuteCustomQuery allows executing custom SQL queries
+// This gives you maximum flexibility for complex analytics
+func (s *DailyOverviewService) ExecuteCustomQuery(ctx context.Context, query string, args ...interface{}) ([]map[string]interface{}, error) {
+	return s.dailyRepo.ExecuteRawQueryWithResult(ctx, query, args...)
+}