remove pages (#27)

* remove pages

* requested changes and unit tests

* update

* fix unit test

* requested changes

* add confirmation

* remove deeply

* remove log

* bugfix

* update placeholder

src/models/alias.js

@@ -13,6 +13,8 @@ const binaryMD5 = require('../utils/crypto');
 
 /**
  * @class Alias
+ * @classdesc Alias model
+ *
  * @property {string} _id - alias id
  * @property {string} hash - alias binary hash
  * @property {string} type - entity type
@@ -124,6 +126,17 @@ class Alias {
 
     return alias.save();
   }
+
+  /**
+   * @returns {Promise<Alias>}
+   */
+  async destroy() {
+    await aliasesDb.remove({_id: this._id});
+
+    delete this._id;
+
+    return this;
+  }
 }
 
 module.exports = Alias;

src/models/page.js

@@ -83,7 +83,7 @@ class Page {
     this.body = body || this.body;
     this.title = this.extractTitleFromBody();
     this.uri = uri || '';
-    this._parent = parent || this._parent;
+    this._parent = parent || this._parent || '0';
   }
 
   /**

src/models/pageOrder.js

@@ -18,6 +18,7 @@ class PageOrder {
    * Returns current Page's children order
    *
    * @param {string} pageId - page's id
+   * @returns {PageOrder}
    */
   static async get(pageId) {
     const order = await db.findOne({page: pageId});
@@ -117,6 +118,42 @@ class PageOrder {
     this.order.splice(found2 + margin, 1);
   }
 
+  /**
+   * Returns page before passed page with id
+   *
+   * @param {string} pageId
+   */
+  getPageBefore(pageId) {
+    const currentPageInOrder = this.order.indexOf(pageId);
+
+    /**
+     * If page not found or first return nothing
+     */
+    if (currentPageInOrder <= 0) {
+      return;
+    }
+
+    return this.order[currentPageInOrder - 1];
+  }
+
+  /**
+   * Returns page before passed page with id
+   *
+   * @param pageId
+   */
+  getPageAfter(pageId) {
+    const currentPageInOrder = this.order.indexOf(pageId);
+
+    /**
+     * If page not found or is last
+     */
+    if (currentPageInOrder === -1 || currentPageInOrder === this.order.length - 1) {
+      return;
+    }
+
+    return this.order[currentPageInOrder + 1];
+  }
+
   /**
    * Returns ordered list
    *