From 47bc41c38fd846f4a6174276f638d84dbb99dc5c Mon Sep 17 00:00:00 2001
From: jrtechs <jrtechs@hotmail.com>
Date: Sun, 18 Mar 2018 14:59:37 -0400
Subject: [PATCH] Updated admin CMS to be able to edit posts after they were
 entered

---
 admin/addCategory.js |  10 +-
 admin/admin.js       |   9 +-
 admin/editPost.js    | 212 +++++++++++++++++++++++++++++++++++++++++++
 includes/header.html |   1 +
 server.js            |   2 +-
 utils/sql.js         |  57 +++++++++++-
 6 files changed, 281 insertions(+), 10 deletions(-)
 create mode 100644 admin/editPost.js

diff --git a/admin/addCategory.js b/admin/addCategory.js
index d266c64..e4d2283 100644
--- a/admin/addCategory.js
+++ b/admin/addCategory.js
@@ -2,7 +2,7 @@ const utils = require('../utils/utils.js');
 const sql = require('../utils/sql');
 
 const qs = require('querystring');
-var Promise = require('promise');
+const Promise = require('promise');
 
 
 /**
@@ -34,7 +34,6 @@ var printCategories = function(res)
                 res.write("</tr>");
             });
             res.write("</tbody></table></div>");
-            console.log("resolved");
             resolve();
         })
     });
@@ -56,8 +55,7 @@ var processPost = function(res, postData)
         var post = qs.parse(postData);
         if(post.add_category)
         {
-            var url = post.add_category.replace(/ /i, "-");
-            url = url.toLowerCase();
+            var url = post.add_category.split(" ").join("-").toLowerCase();
             var q = "insert into categories (name, url) values " +
                 "('" + post.add_category + "','" + url + "')";
             if(sql.insert(q) != 0)
@@ -68,7 +66,6 @@ var processPost = function(res, postData)
             {
                 console.log("error adding category");
             }
-
         }
         resolve(postData);
     });
@@ -88,9 +85,8 @@ module.exports=
                 return processPost(res, postData);
             }).then(function()
             {
-
                 res.write("</div>");
-                resolve();
+                resolve(postData);
             }).catch(function(err)
             {
                 console.log(err);
diff --git a/admin/admin.js b/admin/admin.js
index 56bf32e..35f3176 100644
--- a/admin/admin.js
+++ b/admin/admin.js
@@ -26,10 +26,17 @@ module.exports=
                 }).then(function(postData)
                 {
                     return require("../admin/addCategory.js").main(result, postData);
-                }).then(function()
+                }).then(function(postData)
                 {
                     result.write("</div>");
+                    console.log("hmmm");
+                    return require("../admin/editPost.js").main(result, postData);
+                }).then(function()
+                {
                     resolve();
+                }).catch(function(error)
+                {
+                    throw error;
                 });
             }
             else
diff --git a/admin/editPost.js b/admin/editPost.js
new file mode 100644
index 0000000..7933e91
--- /dev/null
+++ b/admin/editPost.js
@@ -0,0 +1,212 @@
+/** File which renders the edit form for the posts and processes
+ * the post data generated by edit forms.
+ *
+ * @type {Promise|*}
+ */
+
+const Promise = require('promise');
+const qs = require('querystring');
+const sql = require('../utils/sql');
+
+/**
+ * Displays a single row in the posts view
+ * @param result
+ * @param post
+ */
+var renderPostRow = function(result, post)
+{
+    return new Promise(function(resolve, reject)
+    {
+        result.write("<tr>");
+
+        //category
+        result.write("<td>" + post.category_id + "</td>");
+
+        //name
+        result.write("<td>" + post.name + "</td>");
+
+        //picture
+        result.write("<td>" + post.picture_url + "</td>");
+
+        //date
+        result.write("<td>" + post.published + "</td>");
+
+        //edit
+        result.write("<td><form action=\"/admin/\" method =\"post\" >\n" +
+            "    <input type=\"submit\" name=\"submit\" value=\"Edit\"\n" +
+            "              class=\"w3-teal w3-padding-16 w3-hover-dark-grey w3-btn-block w3-center-align\"/>\n" +
+            "<input type='hidden' name='edit_post' value='" + post.post_id + "'/>"+
+            "</form></td>");
+
+        result.write("</tr>");
+
+        resolve();
+    });
+};
+
+/**
+ * Displays all the posts in a table
+ * @param result
+ */
+var postsTable = function(result)
+{
+    result.write("<div class='w3-row'>");
+    result.write("<h1 class=\"w3-text-teal w3-center\">Posts</h1>");
+    result.write("<div class=\"w3-responsive w3-card-4\"><table class=\"w3-table w3-striped w3-bordered\"><thead>");
+    result.write("<tr class=\"w3-teal\">");
+    result.write("<td>Category #</td><td>Name</td><td>Header Picture</td><td>Date</td><td>Edit</td>");
+    result.write("</tr></thead><tbody>");
+    return new Promise(function(resolve, reject)
+    {
+        sql.getAllPosts().then(function(posts)
+        {
+            var postPromises = [];
+            posts.forEach(function(post)
+            {
+                postPromises.push(new Promise(function(res, rej)
+                {
+                    renderPostRow(result, post).then(function()
+                    {
+                       res();
+                    }).catch(function(error)
+                    {
+                        console.log("error rendering " + post);
+                        rej(error);
+                    })
+                }));
+            });
+            Promise.all(postPromises).then(function()
+            {
+                result.write("</tbody></table></div></div>");
+                resolve();
+            }).catch(function(error)
+            {
+                console.log(error);
+                console.log("error rendering posts");
+                reject(error);
+            });
+        }).catch(function(error)
+        {
+            console.log("error with sql query");
+            reject(error);
+        })
+    });
+};
+
+/**
+ * Displays the edit form for edit posts
+ * @param result
+ * @param post_id
+ */
+var displayRenderForm = function(result, post_id)
+{
+    return new Promise(function(resolve, reject)
+    {
+        sql.getPostById(post_id).then(function(post)
+        {
+            result.write("<div class='w3-row'>"+
+                "<h1 class=\"w3-text-teal w3-center\">Edit Post</h1>"+
+                "<form action=\"/admin/\" method =\"post\" class=\"w3-container w3-card-4\">"+
+                "    <div class=\"w3-group w3-padding-16\">\n" +
+                "        <input class=\"w3-input\" type=\"text\" name=\"edit_cat_num\" value='" + post.category_id + "' required>\n" +
+                "        <label class=\"w3-label w3-validate\">Category Number</label>\n" +
+                "    </div>"+
+                "    <div class=\"w3-group w3-padding-16\">\n" +
+                "        <input class=\"w3-input\" type=\"text\" name=\"edit_name_new\" value='" + post.name + "' required>\n" +
+                "        <label class=\"w3-label w3-validate\">Post Title</label>\n" +
+                "    </div>"+
+                "    <div class=\"w3-group w3-padding-16\">\n" +
+                "        <input class=\"w3-input\" type=\"text\" name=\"edit_pic\" value='" + post.picture_url + "' required>\n" +
+                "        <label class=\"w3-label w3-validate\">Picture URL</label>\n" +
+                "    </div>"+
+                "    <div class=\"w3-group w3-padding-16\">\n" +
+                "        <input class=\"w3-input\" type=\"date\" name=\"edit_date\" value='" + post.published.toISOString().split('T')[0] + "' required>\n" +
+                "        <label class=\"w3-label w3-validate\">Published Date</label>\n" +
+                "    </div>"+
+                "    <p><input type=\"submit\" name=\"submit\" value=\"Edit\"\n" +
+                "              class=\"w3-teal w3-padding-16 w3-hover-dark-grey w3-btn-block w3-center-align\"/></p>"+
+                "<input type='hidden' name='edit_post_2' value='" + post_id + "'/>"+
+                "</form>"+
+                "</div>"
+            );
+            resolve();
+        }).catch(function(error)
+        {
+            console.log(error);
+            console.log("error getting post from sql in display Reender Form");
+            reject(error);
+        });
+
+    });
+};
+
+/**
+ * Detects if the post data came from the edit form in posts table or edit post
+ * in the edit post form. Based on this, this function will call one of two functions
+ * @param result
+ * @param postData
+ */
+var processPost = function(result, postData)
+{
+    return new Promise(function(resolve, reject)
+    {
+        var postParsed = qs.parse(postData);
+
+        if(postParsed.edit_post)
+        {
+            //display edit form
+            displayRenderForm(result, postParsed.edit_post).then(function()
+            {
+                resolve();
+            }).catch(function(error)
+            {
+                console.log(error);
+                console.log("error processing the edit post data");
+            });
+        }
+        else if(postParsed.edit_post_2)
+        {
+            //insert edit into sql
+
+            sql.editPost(postParsed).then(function()
+            {
+                resolve();
+            }).catch(function(error)
+            {
+                console.log("error inserting edit post data into sql");
+            });
+        }
+        else
+        {
+            resolve();
+        }
+    });
+};
+
+
+module.exports=
+{
+    /**
+     * Method which calls helper functions which processes post data for editing posts
+     * and calls a function which displays all the posts in a table
+     * @param result
+     * @param postData
+     */
+    main: function(result, postData)
+    {
+        return new Promise(function(resolve, reject)
+        {
+            processPost(result, postData).then(function()
+            {
+                return postsTable(result);
+            }).then(function()
+            {
+                resolve();
+            }).catch(function(error)
+            {
+                console.log("Error in edit post module");
+                reject(error);
+            });
+        });
+    }
+};
\ No newline at end of file
diff --git a/includes/header.html b/includes/header.html
index 25cdabd..9611146 100644
--- a/includes/header.html
+++ b/includes/header.html
@@ -11,6 +11,7 @@
 <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
 
 <meta name="description" content="Blog of Jeffery Russell, featuring technical guides, and projects.">
+
 <meta name="author" content="Jeffery Russell">
 
 <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Raleway">
diff --git a/server.js b/server.js
index b976797..ceb749b 100644
--- a/server.js
+++ b/server.js
@@ -19,7 +19,7 @@ const utils = require('./utils/utils.js');
 //
 // var forceSsl = require('express-force-ssl');
 
-var map = require('./utils/generateSiteMap');
+var map = require('./utils/generateSiteMap.js');
 map.main();
 
 var app = express();
diff --git a/utils/sql.js b/utils/sql.js
index 83556fd..d46d92f 100644
--- a/utils/sql.js
+++ b/utils/sql.js
@@ -36,7 +36,8 @@ var fetch = function(sqlStatement)
         {
             if(err)
             {
-                reject();
+                console.log(err);
+                reject(err);
             }
             resolve(result);
         });
@@ -69,6 +70,27 @@ module.exports=
         })
     },
 
+    /**
+     * function which fetches the sql info on a post based on it's sql id
+     * @param id
+     * @returns {Array}
+     */
+    getPostById: function(id)
+    {
+        console.log("select * from posts where post_id='" + id + "' limit 1");
+
+        return new Promise(function(resolve, reject)
+        {
+            fetch("select * from posts where post_id='" + id + "' limit 1").then(function(post)
+            {
+                resolve(post[0]);
+            }).catch(function(error)
+            {
+                reject(error);
+            });
+        });
+    },
+
     /**
      * Not to be mistaken for getPostData() in @file utils/utils.js,
      * this function extracts a post entry from the sql server
@@ -259,6 +281,21 @@ module.exports=
         });
     },
 
+    /**
+     * Fetches a promise containing every post in the database
+     * @returns {Array}
+     */
+    getAllPosts: function()
+    {
+        return fetch("select * from posts order by published desc");
+    },
+
+
+    /**
+     * Fetches the sql category information based on it's id
+     * @param categoryId
+     * @returns {Array}
+     */
     getCategory: function(categoryId)
     {
         return fetch("select * from categories where category_id='"
@@ -272,6 +309,24 @@ module.exports=
         return fetch(q);
     },
 
+    editPost: function(postData)
+    {
+        var url = postData.edit_name_new.split(" ").join("-").toLowerCase();
+        var q = "update posts ";
+        q+= "set category_id='" + postData.edit_cat_num + "' ";
+        q+= ",name='" + postData.edit_name_new + "' ";
+        q+= ",url='" + url + "' ";
+        q+= ",picture_url='" + postData.edit_pic + "' ";
+        q+= ",published='" + postData.edit_date + "' ";
+        q+= " where post_id='" + postData.edit_post_2 + "'";
+        return module.exports.insert(q);
+    },
+
+    /**
+     * Function which returns a promise which contains the string of the
+     * entire sitemap for the blog.
+     * @returns {Promise|*}
+     */
     getSiteMap: function()
     {
         return new Promise(function(resolve, reject)