Add login page

Change-Id: I167f6492aa2608558bf2ac4e6604dd584de6db66

src/synapse/authProvider.js

@@ -0,0 +1,57 @@
+import { fetchUtils } from "react-admin";
+
+const authProvider = {
+  // called when the user attempts to log in
+  login: ({ homeserver, username, password }) => {
+    console.log("login ");
+    const options = {
+      method: "POST",
+      body: JSON.stringify({
+        type: "m.login.password",
+        user: username,
+        password: password,
+      }),
+    };
+
+    // add 'https://' to homeserver url if its missing
+    let newUrl = window.decodeURIComponent(homeserver);
+    newUrl = newUrl.trim().replace(/\s/g, "");
+    if (!/^https?:\/\//i.test(newUrl)) {
+      homeserver = `https://${newUrl}`;
+    }
+
+    const url = homeserver + "/_matrix/client/r0/login";
+    return fetchUtils.fetchJson(url, options).then(({ json }) => {
+      localStorage.setItem("home_server", json.home_server);
+      localStorage.setItem("user_id", json.user_id);
+      localStorage.setItem("access_token", json.access_token);
+      localStorage.setItem("device_id", json.device_id);
+    });
+  },
+  // called when the user clicks on the logout button
+  logout: () => {
+    console.log("logout ");
+    localStorage.removeItem("access_token");
+    return Promise.resolve();
+  },
+  // called when the API returns an error
+  checkError: ({ status }) => {
+    console.log("checkError " + status);
+    if (status === 401 || status === 403) {
+      return Promise.reject();
+    }
+    return Promise.resolve();
+  },
+  // called when the user navigates to a new location, to check for authentication
+  checkAuth: () => {
+    const access_token = localStorage.getItem("access_token");
+    console.log("checkAuth " + access_token);
+    return typeof access_token == "string"
+      ? Promise.resolve()
+      : Promise.reject();
+  },
+  // called when the user navigates to a new location, to check for permissions / roles
+  getPermissions: () => Promise.resolve(),
+};
+
+export default authProvider;