add total amount in home page

pkg/models/overview.go

@@ -0,0 +1,21 @@
+package models
+
+// TransactionOverviewRequest represents all parameters of transaction overview request
+type TransactionOverviewRequest struct {
+	Query string `form:"query"`
+}
+
+// TransactionOverviewRequestItem represents an item of transaction overview request
+type TransactionOverviewRequestItem struct {
+	Name      string
+	StartTime int64
+	EndTime   int64
+}
+
+// TransactionOverviewResponseItem represents an item of transaction overview
+type TransactionOverviewResponseItem struct {
+	StartTime     int64 `json:"startTime"`
+	EndTime       int64 `json:"endTime"`
+	IncomeAmount  int64 `json:"incomeAmount"`
+	ExpenseAmount int64 `json:"expenseAmount"`
+}