Built basic blog backend.

private/blog/Articles.js

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+// Copyright (c) 2018 Dominic Masters
+//
+// MIT License
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+const DatabaseInterface = require('./../database/DatabaseInterface');
+
+module.exports = class Articles extends DatabaseInterface {
+  constructor(app) {
+    super(app);
+  }
+
+  async getArticlesCount() {
+    return (await this.store.getFromDatabase(
+      `getArticlesCount`, 'getArticlesCount', {}, 'one'
+    )).count;
+  }
+
+  async getArticleById(id) {
+    return await this.store.getFromDatabase(
+      `getArticleById_${id}`, `getArticleById`, {id}, 'one'
+    );
+  }
+
+  async getArticleByHandle(handle) {
+    return await this.store.getFromDatabase(
+      `getArticleByHandle_${handle}`, `getArticleByHandle`, {handle}, 'one'
+    );
+  }
+
+  async getArticlesByPage(page, perPage) {
+    if(!page) page = 1;
+    if(!perPage) perPage = 10;
+
+    page = Math.max(0, page - 1) * perPage;
+
+    return await this.store.getFromDatabase(
+      `getArticlesByPage_${page}_${perPage}`, `getArticlesByPage`,
+      { count:perPage, offset:page }, 'any'
+    );
+  }
+
+
+  async addArticle(handle, title, image, shortDescription, description, date) {
+    if(!date) date = new Date();
+    let article = await this.getDatabase().one('addArticle', {
+      handle, title, image, shortDescription, description, date
+    });
+    this.store.flush();//In future support my wildcard syntax to make this no longer necessary.
+    return article;
+  }
+}