feat(projects): 登录页面实现

src/hooks/business/useSmsCode.ts

@@ -0,0 +1,15 @@
+import { computed } from 'vue';
+import useCountDown from './useCountDown';
+
+export default function useSmsCode() {
+  const { counts, start, isCounting } = useCountDown(60);
+  const initLabel = '获取验证码';
+  const countingLabel = (second: number) => `${second}秒后重新获取`;
+  const label = computed(() => (isCounting.value ? countingLabel(counts.value) : initLabel));
+
+  return {
+    label,
+    start,
+    isCounting
+  };
+}