38 lines
930 B
Rust
38 lines
930 B
Rust
|
use std::sync::{Arc, Mutex, OnceLock};
|
||
|
|
|
||
|
|
/// TipCache 单例，用于存储和管理 tip 金额
|
||
|
|
pub struct TipCache {
|
||
|
|
/// tip 金额
|
||
|
|
tip_amount: Mutex<f64>,
|
||
|
|
}
|
||
|
|
|
||
|
|
static TIP_CACHE: OnceLock<Arc<TipCache>> = OnceLock::new();
|
||
|
|
|
||
|
|
impl TipCache {
|
||
|
|
/// 获取 TipCache 单例实例
|
||
|
|
pub fn get_instance() -> Arc<TipCache> {
|
||
|
|
TIP_CACHE
|
||
|
|
.get_or_init(|| {
|
||
|
|
Arc::new(TipCache {
|
||
|
|
tip_amount: Mutex::new(0.001),
|
||
|
|
})
|
||
|
|
})
|
||
|
|
.clone()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// 初始化 tip 金额
|
||
|
|
pub fn init(&self, tip_amount: Option<f64>) {
|
||
|
|
let amount = tip_amount.unwrap_or(0.001);
|
||
|
|
self.update_tip(amount);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// 获取 tip 金额
|
||
|
|
pub fn get_tip(&self) -> f64 {
|
||
|
|
*self.tip_amount.lock().unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
/// 更新 tip 金额
|
||
|
|
pub fn update_tip(&self, amount: f64) {
|
||
|
|
*self.tip_amount.lock().unwrap() = amount;
|
||
|
|
}
|
||
|
|
}
|