Работа над BookManager

client/components/Reader/share/bookManager.js

@@ -1,23 +1,95 @@
-import 'localforage';
+import localForage from 'localforage';
 import path from 'path';
 
 import BookParser from './BookParser';
 
 class BookManager {
-    async addBook(book, callback) {
-        let meta = {url: book.url, path: book.path};
+    async init() {
+        this.books = {};
 
-        meta.key = path.basename(book.path);
+        const len = await localForage.length();
+        for (let i = 0; i < len; i++){
+            const key = await localForage.key(i);
+            const keySplit = key.split('-');
+            if (keySplit.length == 2 && keySplit[1] == 'meta') {
+                let meta = await localForage.getItem(key);
+                meta.data = await localForage.getItem(keySplit[0]);
 
-        if (callback)
-            callback(100);
-        return meta;
+                this.books[meta.key] = meta;
+                this.books[meta.url] = meta;
+            }
+        }
+
+        console.log(this.books);
     }
 
-    async hasBook(meta) {
+    async addBook(newBook, callback) {
+        if (!this.books) 
+            await this.init();
+        let meta = {url: newBook.url, path: newBook.path};
+        meta.key = path.basename(newBook.path);
+
+        const result = await this.parseBook(meta, newBook.data, callback);
+
+        await localForage.setItem(meta.key, result.data);
+        await localForage.setItem(`${meta.key}-meta`, meta);
+
+        return result;
     }
 
-    async getBook(meta) {
+    async getBook(meta, callback) {
+        if (!this.books) 
+            await this.init();
+        let result = undefined;
+        if (meta.key)
+            result = this.books[meta.key];
+        else
+            result = this.books[meta.url];
+
+        if (result && !result.parsed) {
+            result = await this.parseBook(result, result.data, callback);
+        }
+
+        return result;
+    }
+
+    async delBook(meta) {
+        if (!this.books) 
+            await this.init();
+        let book = undefined;
+        if (meta.key)
+            book = this.books[meta.key];
+        else
+            book = this.books[meta.url];
+
+        if (book) {
+            await localForage.removeItem(book.key);
+            await localForage.removeItem(`${book.key}-meta`);
+
+            delete this.books[book.key];
+            delete this.books[book.url];
+        }
+    }
+
+    async parseBook(meta, data, callback) {
+        if (!this.books) 
+            await this.init();
+        const parsed = new BookParser();
+
+        const parsedMeta = await parsed.parse(data, callback);
+        const result = Object.assign({}, meta, parsedMeta, {data, parsed});
+
+        this.books[meta.key] = result;
+        this.books[meta.url] = result;
+
+        return result;
+    }
+
+    metaOnly(book) {
+        let result = Object.assign({}, book);
+        delete result.data;
+        delete result.parsed;
+        return result;
     }
 }