add auth window

src/hooks/useAuth.js

@@ -0,0 +1,54 @@
+import { useState } from "react";
+import { useNavigate } from "react-router-dom";
+import { API_URL } from "../config/constants";
+
+export function useAuth() {
+  const navigate = useNavigate();
+  const [loading, setLoading] = useState(false);
+  const [error,   setError]   = useState("");
+
+  const login = async (email, password) => {
+    if (!email || !password) { setError("Введи email и пароль"); return; }
+    setLoading(true); setError("");
+
+    try {
+      const res = await fetch(`${API_URL}/api/auth/login`, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ email, password }),
+      });
+
+      if (!res.ok) {
+        const data = await res.json().catch(() => ({}));
+        throw new Error(data.message || "Неверный email или пароль");
+      }
+
+      const { token, user } = await res.json();
+      localStorage.setItem("token", token);
+      localStorage.setItem("user",  JSON.stringify(user));
+      navigate("/dashboard");
+    } catch (err) {
+      setError(err.message);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const loginGoogle  = () => { /* TODO: @react-oauth/google */ };
+
+  const loginYandex  = () => {
+    const clientId = process.env.REACT_APP_YANDEX_CLIENT_ID;
+    const redirect = encodeURIComponent(`${window.location.origin}/auth/yandex`);
+    window.location.href =
+        `https://oauth.yandex.ru/authorize?response_type=code&client_id=${clientId}&redirect_uri=${redirect}`;
+  };
+
+  const loginVK = () => {
+    const appId    = process.env.REACT_APP_VK_APP_ID;
+    const redirect = encodeURIComponent(`${window.location.origin}/auth/vk`);
+    window.location.href =
+        `https://oauth.vk.com/authorize?client_id=${appId}&redirect_uri=${redirect}&response_type=code&scope=email`;
+  };
+
+  return { login, loginGoogle, loginYandex, loginVK, loading, error };
+}