From 56dc63a7bc22a4df912a73471662949366872eff Mon Sep 17 00:00:00 2001
From: jrtechs <jxr8142@rit.edu>
Date: Tue, 6 Nov 2018 19:03:54 -0500
Subject: [PATCH] Created system to preview blog posts your working on.

---
 previewer.js            |  57 +++++++++++++++++++++
 utils/renderBlogPost.js | 107 +++++++++++++++++++++++++++++-----------
 utils/sql.js            |   3 +-
 3 files changed, 136 insertions(+), 31 deletions(-)
 create mode 100644 previewer.js

diff --git a/previewer.js b/previewer.js
new file mode 100644
index 0000000..a727ddb
--- /dev/null
+++ b/previewer.js
@@ -0,0 +1,57 @@
+//http server
+const http = require('http');
+
+//used to parse the request URL
+const url = require('url');
+
+//express app
+const express = require("express");
+
+//express app
+const app = express();
+
+//used to append static content to result
+const includes = require('./includes/includes.js');
+
+//used to append static content to result
+const contentLoader = require('./includes/staticContentServer.js');
+
+//port for the server to run on
+const port = 8000;
+
+/**
+ * Parses the request url and calls correct JS files
+ */
+app.use(function(request, result)
+{
+
+    const filename = url.parse(request.url, true).pathname;
+
+    if(contentLoader.serveStaticContent(request, result, filename, ""))
+    {
+        //do nothing
+    }
+    else
+    {
+        result.writeHead(200, {'Content-Type': 'text/html'});
+        Promise.all([includes.printHeader(),
+            require('./utils/renderBlogPost.js').generateBlogPostComponent('/programming/', 'cs-theory-exam-2-review', -1),
+            includes.printFooter()]).then(function (content)
+        {
+            result.write(content.join(''));
+            result.end();
+
+        }).catch(function (err)
+        {
+            console.log(err);
+            throw err;
+        });
+    }
+
+});
+
+
+
+http.createServer(app).listen(port);
+
+
diff --git a/utils/renderBlogPost.js b/utils/renderBlogPost.js
index 46e492f..ccad6b8 100644
--- a/utils/renderBlogPost.js
+++ b/utils/renderBlogPost.js
@@ -69,7 +69,7 @@ module.exports=
          * Method which renders the body of the blog post. This is responsible for getting
          * the contents of the markdown/latex file and rendering it into beautiful html.
          *
-         * @param post
+         * @param post stuff from the SQL table
          * @param blocks
          * @returns {Promise}
          */
@@ -79,45 +79,91 @@ module.exports=
             {
                 sql.getCategory(post.category_id).then(function(category)
                 {
-                    const pathName =  "blogContent/posts/" + category[0].url + "/"
-                        + post.url + ".md";
-                    var markDown = utils.getFileContents(pathName).toString();
-                    markDown = markDown.split("(media/").join("(" + "../blogContent/posts/"
-                        + category[0].url + "/media/");
+                    resolve(module.exports.generateBlogPost(post.url, category[0].url, blocks));
+                    // const pathName =  "blogContent/posts/" + category[0].url + "/"
+                    //     + post.url + ".md";
+                    // var markDown = utils.getFileContents(pathName).toString();
+                    // markDown = markDown.split("(media/").join("(" + "../blogContent/posts/"
+                    //     + category[0].url + "/media/");
+                    //
+                    // module.exports.convertToHTML(markDown, blocks).then(function(result)
+                    // {
+                    //
+                    //     result = result.split("<figcaption>").join("<figcaption style=\"visibility: hidden;\">");
+                    //
+                    //     //this line prevents older versions of pandoc from including invalid cdm scripts
+                    //     result = result.split("<script src=\"https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_CHTML-full\" type=\"text/javascript\"></script>").join("");
+                    //
+                    //     if(blocks == -1)
+                    //         resolve(result);
+                    //
+                    //     const htmlBlocks = result.split("<p>");
+                    //     var html = "";
+                    //     for(var i = 0; i < blocks; i++)
+                    //     {
+                    //         html += "<p>" + htmlBlocks[i];
+                    //     }
+                    //
+                    //     html += "      <div style=\"\">\n" +
+                    //         "          <p class='text-center'><button class=\"btn btn-secondary btn-lg " +
+                    //         "w3-padding-large w3-white w3-border\"  onclick=\"location.href='" +
+                    //         "http://jrtechs.net/" + category[0].url + "/" + post.url +
+                    //         "'\"><b>READ MORE &raquo;</b></button></p>\n" +
+                    //         "      </div>\n";
+                    //
+                    //     resolve(html);
+                    //
+                    // }).catch(function(error)
+                    // {
+                    //     reject(error);
+                    // })
 
-                    module.exports.convertToHTML(markDown, blocks).then(function(result)
-                    {
+                });
+            })
+        },
 
-                        result = result.split("<figcaption>").join("<figcaption style=\"visibility: hidden;\">");
 
-                        //this line prevents older versions of pandoc from including invalid cdm scripts
-                        result = result.split("<script src=\"https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_CHTML-full\" type=\"text/javascript\"></script>").join("");
+        generateBlogPostComponent: function(categoryURL, postURL, blocks)
+        {
+            return new Promise(function(resolve, reject)
+            {
+                const pathName =  "blogContent/posts/" + categoryURL + "/"
+                    + postURL + ".md";
+                var markDown = utils.getFileContents(pathName).toString();
+                markDown = markDown.split("(media/").join("(" + "../blogContent/posts/"
+                    + categoryURL + "/media/");
 
-                        if(blocks == -1)
-                            resolve(result);
+                module.exports.convertToHTML(markDown, blocks).then(function(result)
+                {
 
-                        const htmlBlocks = result.split("<p>");
-                        var html = "";
-                        for(var i = 0; i < blocks; i++)
-                        {
-                            html += "<p>" + htmlBlocks[i];
-                        }
+                    result = result.split("<figcaption>").join("<figcaption style=\"visibility: hidden;\">");
 
-                        html += "      <div style=\"\">\n" +
-                            "          <p class='text-center'><button class=\"btn btn-secondary btn-lg " +
-                            "w3-padding-large w3-white w3-border\"  onclick=\"location.href='" +
-                            "http://jrtechs.net/" + category[0].url + "/" + post.url +
-                            "'\"><b>READ MORE &raquo;</b></button></p>\n" +
-                            "      </div>\n";
+                    //this line prevents older versions of pandoc from including invalid cdm scripts
+                    result = result.split("<script src=\"https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_CHTML-full\" type=\"text/javascript\"></script>").join("");
 
-                        resolve(html);
+                    if(blocks == -1)
+                        resolve(result);
 
-                    }).catch(function(error)
+                    const htmlBlocks = result.split("<p>");
+                    var html = "";
+                    for(var i = 0; i < blocks; i++)
                     {
-                        reject(error);
-                    })
+                        html += "<p>" + htmlBlocks[i];
+                    }
 
-                });
+                    html += "      <div style=\"\">\n" +
+                        "          <p class='text-center'><button class=\"btn btn-secondary btn-lg " +
+                        "w3-padding-large w3-white w3-border\"  onclick=\"location.href='" +
+                        "http://jrtechs.net/" + categoryURL + "/" + postURL +
+                        "'\"><b>READ MORE &raquo;</b></button></p>\n" +
+                        "      </div>\n";
+
+                    resolve(html);
+
+                }).catch(function(error)
+                {
+                    reject(error);
+                })
             })
         },
 
@@ -131,6 +177,7 @@ module.exports=
             return "</div></div></div><br><br>";
         },
 
+
         /**
          * Converts markdown into html.
          *
diff --git a/utils/sql.js b/utils/sql.js
index fb86cf5..c2521c0 100644
--- a/utils/sql.js
+++ b/utils/sql.js
@@ -19,7 +19,8 @@ const con = mysql.createConnection({
 
 
 con.connect(function(err) {
-    if (err) throw err;
+    if (err)
+        console.log(err);
 });