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

internal/models/dashboard_model.go

@@ -0,0 +1,30 @@
+package models
+
+type TotalComponentStats struct {
+	TotalTypes    int64 `json:"totalTypes"`
+	TotalQuantity int64 `json:"totalQuantity"`
+}
+
+type AbnormalAlert struct {
+	Status string `json:"status"`
+	Count  int64  `json:"count"`
+}
+
+type TodayInvoiceCount struct {
+	Type  string `json:"type"`
+	Count int64  `json:"count"`
+}
+
+type ContainerStats struct {
+	TotalContainers int64 `json:"totalContainers"`
+	EmptyContainers int64 `json:"emptyContainers"`
+}
+
+type DashboardSummary struct {
+	TotalComponents    TotalComponentStats `json:"totalComponents"`
+	PendingInvoices    int64               `json:"pendingInvoices"`
+	LowStockComponents int64               `json:"lowStockComponents"`
+	AbnormalAlerts     []AbnormalAlert     `json:"abnormalAlerts"`
+	TodayInvoices      []TodayInvoiceCount `json:"todayInvoices"`
+	EmptyContainers    ContainerStats      `json:"emptyContainers"`
+}