Moved code from kfarnung/advent-of-code

https://github.com/kfarnung/advent-of-code/tree/master/tools/aoc-to-markdown

Author: kfarnung

.eslintrc.json

@@ -0,0 +1,8 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "amd": true,
+    "webextensions": true
+  }
+}

.gitignore

@@ -59,3 +59,8 @@ typings/
 
 # next.js build output
 .next
+
+# Build output
+/addon/**/*.js
+web-ext-artifacts/
+.web-extension-id

README.md

@@ -1,2 +1,17 @@
-# aoc-to-markdown
-Generates Markdown for a given Advent of Code page.
+# Advent of Code to Markdown
+Converts a given [Advent of Code](https://adventofcode.com) page to a
+GitHub-compatible Markdown file.
+
+## Building
+
+ - `npm install`
+ - `npm run build`
+
+The extension root is the [addon](addon/) folder which can be packaged/tested
+as appropriate.
+
+## Testing
+
+- `npm install --global web-ext`
+- `cd addon/`
+- `web-ext run`

addon/icons/aoc-to-markdown.svg

@@ -0,0 +1,26 @@
+{
+    "manifest_version": 2,
+    "name": "Advent of Code to Markdown",
+    "version": "1.0.2",
+    "description": "Converts a given Advent of Code page to a GitHub-compatible Markdown file.",
+    "icons": {
+        "32": "icons/aoc-to-markdown.svg"
+    },
+    "page_action": {
+        "default_icon": "icons/aoc-to-markdown.svg",
+        "default_title": "Advent of Code to Markdown"
+    },
+    "background": {
+        "scripts": ["background_scripts/index.js"]
+    },
+    "permissions": [
+        "activeTab",
+        "tabs",
+        "downloads"
+    ],
+    "applications": {
+        "gecko": {
+            "id": "{9255ec71-5fba-48c8-9d40-0ae6ef3d6fb3}"
+        }
+    }
+}

addon/manifest.json

@@ -0,0 +1,45 @@
+function urlIsApplicable(url) {
+    const regex = /^https:\/\/adventofcode.com\/\d{4}\/day\/\d{1,2}/;
+    return regex.test(url);
+}
+
+function initializePageAction(tab) {
+    if (urlIsApplicable(tab.url)) {
+        browser.pageAction.show(tab.id);
+    } else {
+        browser.pageAction.hide(tab.id);
+    }
+}
+
+browser.tabs.onUpdated.addListener((id, changeInfo, tab) => {
+    initializePageAction(tab);
+});
+
+browser.runtime.onMessage.addListener((message) => {
+    if (message.action === "saveAs") {
+        const blob = new Blob([message.text], { type: "text/plain;charset=utf-8" });
+
+        browser.downloads.download({
+            url: URL.createObjectURL(blob),
+            filename: "README.md",
+            saveAs: true,
+        }).catch((e) => {
+            console.error(e);
+        });
+    } else {
+        console.warn(`Unknown action: ${message.action}`);
+    }
+});
+
+browser.pageAction.onClicked.addListener(() => {
+    browser.tabs.executeScript({file: "/content_scripts/index.js"})
+        .catch((e) => {
+            console.error(e);
+        });
+});
+
+browser.tabs.query({}).then((tabs) => {
+    for (const tab of tabs) {
+        initializePageAction(tab);
+    }
+});

background_scripts/background.js

@@ -0,0 +1,53 @@
+const gfm = require('turndown-plugin-gfm').gfm;
+const TurndownService = require('turndown').default;
+
+function stripHyphens (str) {
+    const regex = /^--- (.+) ---$/;
+    return str.replace(regex, (match, p1) => {
+        return p1;
+    });
+}
+
+const newDoc = document.createDocumentFragment();
+const titleElement = document.createElement('h1');
+newDoc.appendChild(titleElement);
+
+const link = document.createElement('a');
+link.href = window.location.href;
+link.innerText = window.location.href;
+newDoc.appendChild(link);
+
+const descriptionHeader = document.createElement('h2');
+descriptionHeader.innerText = 'Description';
+newDoc.appendChild(descriptionHeader);
+
+const articleElements = document.querySelectorAll('article');
+const articleElementsLength = articleElements.length;
+for (let index = 0; index < articleElementsLength; ++index) {
+    const article = articleElements[index].cloneNode(true);
+    const headingElement = article.querySelector('h2');
+    let heading = stripHyphens(headingElement.innerText);
+
+    if (index === 0) {
+        titleElement.innerText = heading;
+        heading = 'Part One';
+    }
+
+    const newHeadingElement = document.createElement('h3');
+    newHeadingElement.innerText = heading;
+    headingElement.replaceWith(newHeadingElement);
+
+    newDoc.appendChild(article);
+}
+
+const turndownService = new TurndownService({
+    headingStyle: 'atx'
+});
+turndownService.use(gfm);
+
+const markdown = turndownService.turndown(newDoc).concat('\n');
+
+browser.runtime.sendMessage({
+    action: "saveAs",
+    text: markdown,
+});