pageOptions working, toc introduced

dist/main.js

@@ -4,26 +4,68 @@ const fs = require("fs");
 const config = require("./config");
 const logger = require("./log");
 const express = require("express");
+function getPageOptions(contentStr) {
+    let pageOptions = {};
+    // logger.info(`contentStr: ${contentStr}`)
+    try {
+        let lines = contentStr.split("\n");
+        let firstLine = lines[0];
+        // logger.info(`firstLine: ${firstLine}`)
+        let pageOptionsStr = firstLine.replace(/^\s*<!-- (\{.+\}) -->.*$/, "\$1");
+        // logger.info(`pageOptionsStr: ${pageOptionsStr}`)
+        pageOptions = JSON.parse(pageOptionsStr);
+        // logger.info(JSON.stringify(pageOptions))
+    }
+    catch (_a) {
+        // logger.info("No pageOptions found")
+    }
+    return pageOptions;
+}
+function getToc() {
+    logger.info("building toc");
+    let toc = "";
+    let posts = fs.readdirSync('./docroot/posts');
+    posts.forEach((v) => {
+        let content = fs.readFileSync(`./docroot/posts/${v}/article.pag`);
+        let contentStr = content.toString();
+        let pageOptions = getPageOptions(contentStr);
+        toc += `<li><a href="posts/${v}">${v} - ${pageOptions.title}</a></li>`;
+    });
+    return toc;
+}
 logger.info("Homepage starting");
 let app = express();
 let masterTmpl;
+let toc;
+let cache = {};
 app.engine('pag', (filePath, options, callback) => {
-    fs.readFile(filePath, (err, content) => {
-        if (err) {
-            return callback(new Error(err.message));
-        }
-        let contentStr = content.toString();
-        let pageOptionsStr = contentStr.replace(/^\s+<!-- (\{.*\}) -->.*$/, "\$1");
-        logger.info(`contentStr: ${contentStr}`);
-        logger.info(`pageOptionsStr: ${pageOptionsStr}`);
-        let pageOptions = JSON.parse(pageOptionsStr);
-        let renderedPhase1 = contentStr
-            .replace('#bla#', 'blu');
-        let renderedPhase2 = masterTmpl
-            .replace('#maincontent#', renderedPhase1)
-            .replace('#title#', pageOptions.title);
-        return callback(null, renderedPhase2);
-    });
+    if (!(filePath in cache)) {
+        logger.info(`${filePath} not yet in cache`);
+        fs.readFile(filePath, (err, content) => {
+            if (err) {
+                return callback(new Error(err.message));
+            }
+            let contentStr = content.toString();
+            let pageOptions = getPageOptions(contentStr);
+            let renderedPhase1 = contentStr
+                .replace('#bla#', 'blu');
+            let renderedPhase2 = masterTmpl
+                .replace('#maincontent#', renderedPhase1);
+            for (let key in pageOptions) {
+                let value = pageOptions[key];
+                if (key == 'toc' && value == 'compute') {
+                    value = toc;
+                }
+                renderedPhase2 = renderedPhase2.replace(`#${key}#`, value);
+            }
+            cache[filePath] = renderedPhase2;
+            return callback(null, renderedPhase2);
+        });
+    }
+    else {
+        logger.info(`${filePath} served from cache`);
+        return callback(null, cache[filePath]);
+    }
 });
 app.set('views', './docroot');
 app.set('view engine', 'pag');
@@ -36,7 +78,15 @@ app.get('/posts/:date', (req, res) => {
 app.get('/', (req, res) => {
     res.send('Hello world!');
 });
+app.get('/reload', (req, res) => {
+    logger.info('truncating cache');
+    cache = {};
+    toc = getToc();
+    res.send('reload triggered');
+});
+app.use('/files', express.static('files'));
 masterTmpl = fs.readFileSync(config.dict.masterTmpl).toString();
+toc = getToc();
 app.listen(config.dict.httpPort, () => {
     logger.info("Homepage is listening");
 });