Personal blog written from scratch using Node.js, Bootstrap, and MySQL.
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176 lines
5.5 KiB
176 lines
5.5 KiB
/** File which renders the edit form for the posts and processes
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* the post data generated by edit forms.
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*
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* @type {Promise|*}
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*/
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const Promise = require('promise');
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const qs = require('querystring');
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const sql = require('../utils/sql');
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/**
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* Displays a single row in the posts view
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*
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* @param post
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*/
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const renderPostRow = function(post)
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{
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return "<tr>" +
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"<td>" + post.category_id + "</td>" +
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"<td>" + post.name + "</td>" +
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"<td>" + post.picture_url + "</td>" +
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"<td>" + post.published + "</td>" +
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"<td><form action=\"/admin/\" method =\"post\" >\n" +
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"<input type=\"submit\" name=\"submit\" value=\"Edit\"\n" +
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" class=\"btn btn-secondary\"/>\n" +
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"<input type='hidden' name='edit_post' value='" + post.post_id + "'/>"+
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"</form></td>" +
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"</tr>";
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};
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/**
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* Displays all the posts in a table
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*/
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const postsTable = function()
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{
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var html = "<div class='blogPost p-2'>" +
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"<h1 class=\"text-center\">Posts</h1>" +
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"<div class=\"\"><table class=\"table table-striped\">" +
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"<thead class=\"thead-dark\"><tr>" +
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"<td>Category #</td><td>Name</td><td>Header Picture</td><td>Date</td><td>Edit</td>" +
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"</tr></thead><tbody>";
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return new Promise(function(resolve, reject)
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{
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sql.getAllPosts().then(function(posts)
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{
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var postPromises = [];
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posts.forEach(function(post)
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{
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postPromises.push(renderPostRow(post));
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});
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Promise.all(postPromises).then(function(htmls)
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{
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resolve(html + htmls.join('') + "</tbody></table></div></div><br>");
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}).catch(function(error)
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{
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reject(error);
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});
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}).catch(function(error)
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{
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reject(error);
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})
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});
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};
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/**
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* Displays the edit form for edit posts
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* @param post_id
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*/
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const displayRenderForm = function(post_id)
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{
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return new Promise(function(resolve, reject)
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{
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sql.getPostById(post_id).then(function(post)
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{
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var html = "<div class='blogPost'>"+
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"<h1 class=\"text-center\">Edit Post</h1>"+
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"<form action=\"/admin/\" method =\"post\" >"+
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" <div class=\"form-group\">\n" +
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" <input class=\"form-control\" type=\"text\" name=\"edit_cat_num\" value='" + post.category_id + "' required>\n" +
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" <label class=\"w3-label w3-validate\">Category Number</label>\n" +
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" </div>"+
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" <div class=\"form-group\">\n" +
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" <input class=\"form-control\" type=\"text\" name=\"edit_name_new\" value='" + post.name + "' required>\n" +
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" <label class=\"w3-label w3-validate\">Post Title</label>\n" +
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" </div>"+
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" <div class=\"form-group\">\n" +
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" <input class=\"form-control\" type=\"text\" name=\"edit_pic\" value='" + post.picture_url + "' required>\n" +
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" <label class=\"w3-label w3-validate\">Picture URL</label>\n" +
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" </div>"+
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" <div class=\"form-group\">\n" +
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" <input class=\"form-control\" type=\"date\" name=\"edit_date\" value='" + post.published.toISOString().split('T')[0] + "' required>\n" +
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" <label class=\"w3-label w3-validate\">Published Date</label>\n" +
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" </div>"+
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" <div><input type=\"submit\" name=\"submit\" value=\"Edit\"\n" +
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" class=\"btn btn-lg btn-secondary\"/></div>"+
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"<input type='hidden' name='edit_post_2' value='" + post_id + "'/>"+
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"</form>"+
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"</div><br>";
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resolve(html);
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}).catch(function(error)
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{
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reject(error);
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});
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});
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};
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/**
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* Detects if the post data came from the edit form in posts table or edit post
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* in the edit post form. Based on this, this function will call one of two functions
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* @param postData
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*/
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const processPost = function(postData)
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{
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return new Promise(function(resolve, reject)
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{
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var postParsed = qs.parse(postData);
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if(postParsed.edit_post)
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{
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//display edit form
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displayRenderForm(postParsed.edit_post).then(function(html)
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{
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resolve(html);
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}).catch(function(error)
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{
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reject(error);
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});
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}
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else if(postParsed.edit_post_2)
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{
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sql.editPost(postParsed).then(function(html)
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{
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resolve(html);
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}).catch(function(error)
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{
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reject(error);
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});
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}
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else
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{
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resolve("");
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}
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});
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};
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module.exports=
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{
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/**
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* Method which calls helper functions which processes post data for editing posts
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* and calls a function which displays all the posts in a table
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* @param postData
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*/
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main: function(postData)
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{
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return new Promise(function(resolve, reject)
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{
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Promise.all([processPost(postData),
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postsTable()]).then(function(html)
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{
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resolve("<br>" + html.join(''));
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}).catch(function(error)
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{
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console.log("error in edit post.js");
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reject(error);
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})
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});
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}
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};
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