Работа над HistoryPage

client/store/modules/reader.js

@@ -25,6 +25,29 @@ const getters = {
 // actions
 const actions = {};
 
+function delBook(state, value) {
+    Vue.delete(state.openedBook, value.key);
+}
+
+function cleanBooks(state) {
+    if (Object.keys(state.openedBook).length > 100) {
+        let min = Date.now();
+        let found = null;
+        for (let bookKey in state.openedBook) {
+            const book = state.openedBook[bookKey];
+            if (book.touchTime < min) {
+                min = book.touchTime;
+                found = book;
+            }
+        }
+
+        if (found) {
+            delBook(found);
+            cleanBooks(state);
+        }
+    }
+}
+
 // mutations
 const mutations = {
     setToolBarActive(state, value) {
@@ -32,9 +55,10 @@ const mutations = {
     },
     setOpenedBook(state, value) {
         Vue.set(state.openedBook, value.key, Object.assign({}, value, {touchTime: Date.now()}));
+        cleanBooks(state);
     },
     delOpenedBook(state, value) {
-        Vue.delete(state.openedBook, value.key);
+        delBook(state, value);
     }
 };