update page

src/index.md

@@ -50,13 +50,76 @@ Of course if you search, there are plenty of ways to make a dynamic profile read
 
 * If you want to test locally, your environment needs Deno, and after cloning this repo, you can do `deno task lume --serve` to run it on `http://localhost:3000`. You can also go to this repo and use "use this template" to get your own copy, then clone that to local.
 * This repo creates a single web page based on the linktree-like [Theme Simple Me](https://github.com/lumeland/theme-simple-me) template for Lume, and hosts it on Github pages. But you can change `url: /` to `url: false` in `src/index.md` to disable the site. 
-* Edit the `repo-readme.vto` Vento template, using markdown format, to create the precursor readme. Notice the `url:` is set to a markdown file. 
+* Edit the `repo-readme.vto` Vento template, using markdown format, to create the precursor readme. Notice the `url:` in the file's frontmatter is set to output a markdown file. 
 * On build via `deno task lume --serve` (builds and serves on localhost) or `deno task lume` (just builds), Lume will generate the site files in `_site`, and also run a script to copy the generated readme into place. 
-* 
+* See the script in Lume's config file `_config.ts` in the repo root, in the `site.script` line near the bottom. After the site is built, the readme generated by Vento is copied to the repo root as the typical `README.md` [here](https://github.com/RickCogley/rickcogley/blob/main/README.md). 
+* Take a look at the Vento template codes (`{{ something }}`) in the `repo-readme.vto` Vento template. You can see that it is pulling in the date, checking for a holiday name, and pulling in rss feeds. 
+
+## Setting up the Data
+
+First take a look at the "Today is" line in the `repo-readme.vto` Vento template. 
+
+```
+**Today is:** {{ todaysDateENUS }}{{ set today = todaysDateYYYYMMDD }}{{ if holidays[today] }} ({{ holidays[today] }}){{ /if }}
+```
+
+It's referencing the constants `todaysDateENUS` and `todaysDateYYYYMMDD`, and checking a dataset "holidays" if there is any data that matches "today". The constants and data are set up in the file `_data.ts`. For example: 
+
+```
+export const todaysDateYYYYMMDD = `${new Date().toISOString().split("T")[0]}`;
+```
+
+This sets up a date in YYYY-MM-DD format, because that's what the holiday dataset has to match on. 
+
+As for the holidays, they are fetched into an object `holidays` which the Vento template is parsing. 
+
+```
+const response = await fetch('https://holidays-jp.github.io/api/v1/date.json', {
+  method: 'GET',
+  ...
+```
+
+If you needed to access a protected API, you could put its access token in a repository variable, and access it as a bearer token in the header of your get.
+
+Regarding RSS, I used "parse feed" from a library on denoland/x. This part:
+
+```
+import { parseFeed } from "https://deno.land/x/rss/mod.ts";
+async function fetchAndConvertRSS(url: string, limit: number) {
+  // Fetch the RSS feed
+  const response = await fetch(url);
+  ...
+```
+
+Then the feed can be fetched into a const to use in the Vento template. The Vento template just uses a for loop to parse the feed's json and put it into markdown `li` elements. 
+
+```
+## Latest Statuses:
+{{ for item of statuses.entries }}* [{{ item.description.value }}]({{ item.id }})
+{{ /for }}
+```
+
+## Automate Generation
+
+To automate the generation, we just use a github actions template, `.github/workflows/update-profile-readme.yml` which triggers Lume to build the site which copies the `README.md` into place, commits the new file, publishes to GH Pages. The actions template is triggered on push or PR, "workflow dispatch" which means you can also manually trigger, and on a cron schedule. 
+
+```
+on:
+  push:
+    # Run on main branch pushes or PRs
+    branches: [main]
+  pull_request:
+    branches: [ "main" ]
+  # Allow to manually trigger the workflow
+  workflow_dispatch:
+  schedule:
+    # Rebuild every day at 9:06 PM UTC
+    - cron: "6 21 * * *"
+```
 
 ## How to use?
 
-Go to the repo, "use this template"
+Go to the repo, "use this template" then tweak it how you like. 
 
 ## Is it good?