add contract storage fix various bugs and translations

frontend/src/services/api.ts

@@ -15,7 +15,7 @@ import type {
 } from "@/services/resources/productors";
 import type { User, UserCreate, UserEditPayload } from "@/services/resources/users";
 import type { Product, ProductCreate, ProductEditPayload } from "./resources/products";
-import type { ContractCreate } from "./resources/contracts";
+import type { Contract, ContractCreate } from "./resources/contracts";
 import { notifications } from "@mantine/notifications";
 import { t } from "@/config/i18n";
 
@@ -563,6 +563,29 @@ export function useEditUser() {
     });
 }
 
+export function useGetContracts(filters?: URLSearchParams): UseQueryResult<Contract[], Error> {
+    const queryString = filters?.toString();
+    return useQuery<Contract[]>({
+        queryKey: ["contracts", queryString],
+        queryFn: () =>
+            fetch(`${Config.backend_uri}/contracts${filters ? `?${queryString}` : ""}`).then(
+                (res) => res.json(),
+            ),
+    });
+}
+
+export function useGetContract(
+    id?: number,
+    options?: Partial<DefinedInitialDataOptions<Contract, Error, Contract, readonly unknown[]>>,
+) {
+    return useQuery<Contract>({
+        queryKey: ["contract"],
+        queryFn: () => fetch(`${Config.backend_uri}/contracts/${id}`).then((res) => res.json()),
+        enabled: !!id,
+        ...options,
+    });
+}
+
 export function useCreateContract() {
     const queryClient = useQueryClient();
 
@@ -587,3 +610,31 @@ export function useCreateContract() {
         },
     });
 }
+
+export function useDeleteContract() {
+    const queryClient = useQueryClient();
+    return useMutation({
+        mutationFn: (id: number) => {
+            return fetch(`${Config.backend_uri}/contracts/${id}`, {
+                method: "DELETE",
+                headers: {
+                    "Content-Type": "application/json",
+                },
+            }).then((res) => res.json());
+        },
+        onSuccess: async () => {
+            notifications.show({
+                title: t("success", { capfirst: true }),
+                message: t("successfully deleted contract", { capfirst: true }),
+            });
+            await queryClient.invalidateQueries({ queryKey: ["contracts"] });
+        },
+        onError: (error) => {
+            notifications.show({
+                title: t("error", { capfirst: true }),
+                message: error?.message || t(`error deleting contract`, { capfirst: true }),
+                color: "red",
+            });
+        },
+    });
+}