Charge coin

src/utils/storage.ts

@@ -2,6 +2,7 @@
 const userKey = 'user-key';
 const areaCodeKey = 'area-code-key';
 const mineListKey = 'mine-list-key';
+const coinsKey = 'coin-key';
 
 // user info from now on
 function storeUser(user: any = undefined) {
@@ -54,6 +55,23 @@ function clearMineList() {
   localStorage.removeItem(mineListKey);
 }
 
+// coin list info from now on
+function storeCoins(coins: any) {
+  localStorage.setItem(coinsKey, JSON.stringify(coins));
+}
+
+function loadCoins() {
+  try {
+    return JSON.parse(localStorage.getItem(coinsKey) || 'null');
+  } catch (e) {
+    return null;
+  }
+}
+
+function clearCoins() {
+  localStorage.removeItem(coinsKey);
+}
+
 export {
   storeUser,
   loadUser,
@@ -65,4 +83,8 @@ export {
   storeMineList,
   loadMineList,
   clearMineList,
+
+  storeCoins,
+  loadCoins,
+  clearCoins,
 }