add: auth functionality basics

src/hooks/auth/useCheckUserExists.ts

@@ -0,0 +1,14 @@
+import { checkUserExists } from "@/lib/api/auth"
+import { useQueryClient } from "@tanstack/react-query"
+
+export const useCheckUserExistsLazy = () => {
+  const queryClient = useQueryClient()
+
+  const run = (phone: string) =>
+    queryClient.fetchQuery({
+      queryKey: ['checkUserExists', phone],
+      queryFn: () => checkUserExists(phone),
+    })
+
+  return { run }
+}

src/hooks/auth/useLogin.ts

@@ -0,0 +1,11 @@
+import { useMutation } from '@tanstack/react-query'
+import { login } from '@/lib/api/auth'
+import { useAuthStore } from '@/zustand/userStore'
+
+export const useLogin = () =>
+    useMutation({
+        mutationFn: login,
+        onSuccess: (data) => {
+            useAuthStore.getState().login(data.user)
+        },
+    })

src/hooks/auth/useSignup.ts

@@ -0,0 +1,11 @@
+import { useMutation } from '@tanstack/react-query'
+import { signup } from '@/lib/api/auth'
+import { useAuthStore } from '@/zustand/userStore'
+
+export const useSignup = () =>
+    useMutation({
+        mutationFn: signup,
+        onSuccess: (data) => {
+            useAuthStore.getState().login(data.user)
+        },
+    })