feat: add dashboard summary endpoint and related models, queries, and services

internal/repositories/dashboard_repository.go

@@ -0,0 +1,61 @@
+package repositories
+
+import (
+	"context"
+	"wm-backend/internal/mapper"
+	"wm-backend/internal/models"
+	db "wm-backend/sqlc_gen"
+
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+func GetDashboardSummary(ctx context.Context, queries *db.Queries, warehouseID pgtype.Int8) (models.DashboardSummary, error) {
+	totalStats, err := queries.GetTotalComponentStats(ctx, warehouseID)
+	if err != nil {
+		return models.DashboardSummary{}, err
+	}
+
+	pendingInvoices, err := queries.CountPendingInvoices(ctx)
+	if err != nil {
+		return models.DashboardSummary{}, err
+	}
+
+	lowStockCount, err := queries.CountLowStockComponents(ctx)
+	if err != nil {
+		return models.DashboardSummary{}, err
+	}
+
+	abnormalRows, err := queries.GetAbnormalItemCounts(ctx, warehouseID)
+	if err != nil {
+		return models.DashboardSummary{}, err
+	}
+
+	todayInvoiceRows, err := queries.GetTodayInvoiceCounts(ctx)
+	if err != nil {
+		return models.DashboardSummary{}, err
+	}
+
+	containerStats, err := queries.GetContainerStats(ctx, warehouseID)
+	if err != nil {
+		return models.DashboardSummary{}, err
+	}
+
+	abnormalAlerts := make([]models.AbnormalAlert, 0, len(abnormalRows))
+	for _, r := range abnormalRows {
+		abnormalAlerts = append(abnormalAlerts, mapper.ToDomainAbnormalAlert(r))
+	}
+
+	todayInvoices := make([]models.TodayInvoiceCount, 0, len(todayInvoiceRows))
+	for _, r := range todayInvoiceRows {
+		todayInvoices = append(todayInvoices, mapper.ToDomainTodayInvoiceCount(r))
+	}
+
+	return models.DashboardSummary{
+		TotalComponents:    mapper.ToDomainTotalComponentStats(totalStats),
+		PendingInvoices:    pendingInvoices,
+		LowStockComponents: lowStockCount,
+		AbnormalAlerts:     abnormalAlerts,
+		TodayInvoices:      todayInvoices,
+		EmptyContainers:    mapper.ToDomainContainerStats(containerStats),
+	}, nil
+}