feat 收银台调试

src/hooks/daxpay/useKeyboard.ts

@@ -0,0 +1,60 @@
+import type { Ref } from 'vue'
+
+/**
+ * 键盘hooks
+ * @param amount
+ */
+export function useKeyboard(amount: Ref<string>) {
+  /**
+   * 输入
+   */
+  function input(value: string) {
+    const amountStr = amount.value
+    if (amountStr === '0') {
+      if (value === '.') {
+        amount.value = '0.'
+        return
+      }
+      amount.value = String(value)
+    }
+    else {
+      // 只允许有一个小数点
+      if (value === '.' && amountStr.includes('.')) {
+        return
+      }
+      // 小数最多两位
+      if (amountStr.includes('.') && amountStr.length - amountStr.indexOf('.') > 2) {
+        return
+      }
+      // 金额最高100万
+      if (amountStr.split('.')[0].length > 6) {
+        // 是否有小数,
+        if (amountStr.includes('.') && amountStr.split('.')[1].length > 1) {
+          return
+        }
+        if (!amountStr.includes('.') && value !== '.') {
+          return
+        }
+      }
+
+      amount.value = amountStr.concat(value)
+    }
+  }
+
+  /**
+   * 删除
+   */
+  function del() {
+    if (amount.value.length > 1) {
+      amount.value = amount.value.substring(0, amount.value.length - 1)
+    }
+    else {
+      amount.value = '0'
+    }
+  }
+
+  return {
+    input,
+    del,
+  }
+}