Refactor: UI & Feature updates (Calculator, UnitConverter, Privacy, Cleanup)

codes/minipro/calculation/miniprogram/pages/discount/discount.ts

@@ -0,0 +1,53 @@
+Page({
+  data: {
+    originalPrice: '',
+    discount: '',
+    finalPrice: '0.00',
+    savedMoney: '0.00'
+  },
+
+  bindOriginalInput(e: any) {
+    this.setData({
+      originalPrice: e.detail.value
+    });
+    this.calculate();
+  },
+
+  bindDiscountInput(e: any) {
+    this.setData({
+      discount: e.detail.value
+    });
+    this.calculate();
+  },
+
+  calculate() {
+    const original = parseFloat(this.data.originalPrice);
+    const discount = parseFloat(this.data.discount); // Assume local style 8.8折 or international %? Let's assume N折 (0-10)
+
+    if (isNaN(original) || isNaN(discount)) {
+      this.setData({
+        finalPrice: '0.00',
+        savedMoney: '0.00'
+      });
+      return;
+    }
+
+    // Logic: Input 9 = 9折 = 90% of price. Input 8.5 = 85%.
+    // If input > 10, maybe it means percentage? e.g. 80 = 80%?
+    // Let's stick to N折 standard in China.
+    
+    let rate = discount;
+    if (rate > 10) {
+        rate = rate / 10.0; 
+    }
+    
+    // rate is now 0-10. e.g. 8.8
+    const final = original * (rate / 10.0);
+    const saved = original - final;
+
+    this.setData({
+      finalPrice: final.toFixed(2),
+      savedMoney: saved.toFixed(2)
+    });
+  }
+});