From b6a15e0579a9c834a7c46925869ae1d41d4b7e11 Mon Sep 17 00:00:00 2001
From: behnam <behnamrahimpour74@gmail.com>
Date: Fri, 1 Nov 2024 16:06:43 +0300
Subject: [PATCH] Add fetch all customers module

---
 src/feature/customer/data/repo/customer-db-repo.ts        | 5 +++++
 src/feature/customer/domain/i-repo/customer-repo.ts       | 1 +
 .../domain/usecase/fetch-customers-amount-usecase.ts      | 8 ++++++++
 3 files changed, 14 insertions(+)
 create mode 100644 src/feature/customer/domain/usecase/fetch-customers-amount-usecase.ts

diff --git a/src/feature/customer/data/repo/customer-db-repo.ts b/src/feature/customer/data/repo/customer-db-repo.ts
index fec27e1..f69239a 100644
--- a/src/feature/customer/data/repo/customer-db-repo.ts
+++ b/src/feature/customer/data/repo/customer-db-repo.ts
@@ -46,6 +46,11 @@ export default class CustomerDbRepo implements CustomerRepo {
         }
     }
 
+    async fetchCustomersAmount(): Promise<number> {
+        const data = await sql`SELECT COUNT(*) FROM customers`as postgres.RowList<unknown[]>;
+        return Number(data.count ?? '0');
+    }
+
 
     private customersDto(dbCustomers: customerDbResponse[]): Customer[] {
         return  dbCustomers.map((customer) => this.customerDto(customer));
diff --git a/src/feature/customer/domain/i-repo/customer-repo.ts b/src/feature/customer/domain/i-repo/customer-repo.ts
index 5c9cbf2..08e8226 100644
--- a/src/feature/customer/domain/i-repo/customer-repo.ts
+++ b/src/feature/customer/domain/i-repo/customer-repo.ts
@@ -2,6 +2,7 @@ import Customer from "@/feature/customer/domain/entity/customer"
 
 export default interface CustomerRepo {
     fetchList(query: string): Promise<Customer[]>
+    fetchCustomersAmount(): Promise<number>
 }
 
 export const customerRepoKey = "customerRepoKey"
\ No newline at end of file
diff --git a/src/feature/customer/domain/usecase/fetch-customers-amount-usecase.ts b/src/feature/customer/domain/usecase/fetch-customers-amount-usecase.ts
new file mode 100644
index 0000000..608ae37
--- /dev/null
+++ b/src/feature/customer/domain/usecase/fetch-customers-amount-usecase.ts
@@ -0,0 +1,8 @@
+import serverDi from "@/feature/common/server-di";
+import { customerKey } from "@/feature/customer/customer-key";
+import CustomerRepo, { customerRepoKey } from "@/feature/customer/domain/i-repo/customer-repo";
+
+export default function fetchCustomersAmountUsecase(): Promise<number> {
+    const repo = serverDi(customerKey).resolve<CustomerRepo>(customerRepoKey)
+    return repo.fetchCustomersAmount()
+}
\ No newline at end of file