feat: 新增饮水记录功能，支持快速添加饮水量和用户偏好设置

utils/userPreferences.ts

@@ -0,0 +1,72 @@
+import AsyncStorage from '@react-native-async-storage/async-storage';
+
+// 用户偏好设置的存储键
+const PREFERENCES_KEYS = {
+  QUICK_WATER_AMOUNT: 'user_preference_quick_water_amount',
+} as const;
+
+// 用户偏好设置接口
+export interface UserPreferences {
+  quickWaterAmount: number;
+}
+
+// 默认的用户偏好设置
+const DEFAULT_PREFERENCES: UserPreferences = {
+  quickWaterAmount: 150, // 默认快速添加饮水量为 250ml
+};
+
+/**
+ * 获取用户偏好设置
+ */
+export const getUserPreferences = async (): Promise<UserPreferences> => {
+  try {
+    const quickWaterAmount = await AsyncStorage.getItem(PREFERENCES_KEYS.QUICK_WATER_AMOUNT);
+
+    return {
+      quickWaterAmount: quickWaterAmount ? parseInt(quickWaterAmount, 10) : DEFAULT_PREFERENCES.quickWaterAmount,
+    };
+  } catch (error) {
+    console.error('获取用户偏好设置失败:', error);
+    return DEFAULT_PREFERENCES;
+  }
+};
+
+/**
+ * 设置快速添加饮水的默认值
+ * @param amount 饮水量（毫升）
+ */
+export const setQuickWaterAmount = async (amount: number): Promise<void> => {
+  try {
+    // 确保值在合理范围内（50ml - 1000ml）
+    const validAmount = Math.max(50, Math.min(1000, amount));
+    await AsyncStorage.setItem(PREFERENCES_KEYS.QUICK_WATER_AMOUNT, validAmount.toString());
+  } catch (error) {
+    console.error('设置快速添加饮水默认值失败:', error);
+    throw error;
+  }
+};
+
+/**
+ * 获取快速添加饮水的默认值
+ */
+export const getQuickWaterAmount = async (): Promise<number> => {
+  try {
+    const amount = await AsyncStorage.getItem(PREFERENCES_KEYS.QUICK_WATER_AMOUNT);
+    return amount ? parseInt(amount, 10) : DEFAULT_PREFERENCES.quickWaterAmount;
+  } catch (error) {
+    console.error('获取快速添加饮水默认值失败:', error);
+    return DEFAULT_PREFERENCES.quickWaterAmount;
+  }
+};
+
+/**
+ * 重置所有用户偏好设置为默认值
+ */
+export const resetUserPreferences = async (): Promise<void> => {
+  try {
+    await AsyncStorage.removeItem(PREFERENCES_KEYS.QUICK_WATER_AMOUNT);
+  } catch (error) {
+    console.error('重置用户偏好设置失败:', error);
+    throw error;
+  }
+};