created login page #4

src/authProvider.ts

@@ -0,0 +1,41 @@
+import {AuthProvider, HttpError} from "react-admin";
+import data from "./users.json";
+
+export const authProvider: AuthProvider = {
+  login: ({ username, password }) => {
+    const user = data.users.find(
+        (u) => u.username === username && u.password === password,
+    );
+
+    if (user) {
+      const { password, ...userToPersist } = user;
+        localStorage.setItem("user", JSON.stringify(userToPersist));
+      return Promise.resolve();
+    }
+
+    return Promise.reject(
+        new HttpError("Invalid username or password", 401, {
+          message: "Invalid username or password",
+        }),
+    );
+  },
+  async logout() {
+    localStorage.removeItem("user");
+    return Promise.resolve();
+  },
+  async checkAuth() {
+    return localStorage.getItem("user") ? Promise.resolve() : Promise.reject();
+  },
+  async getIdentity() {
+    const persistedUser = localStorage.getItem("user");
+    const user = persistedUser ? JSON.parse(persistedUser) : null;
+
+    return Promise.resolve(user);
+  },
+  async checkError() {
+    return Promise.resolve();
+  },
+  async getPermissions() {
+    return Promise.resolve(undefined);
+  },
+};