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# pyssg - Static Site Generator written in Python

Inspired (initially) by Roman Zolotarev's [`ssg5`](https://rgz.ee/bin/ssg5) and [`rssg`](https://rgz.ee/bin/rssg), Luke Smith's [`lb` and `sup`](https://github.com/LukeSmithxyz/lb) and, pedantic.software's great (but *"mamador"*, as I would say in spanish) [`blogit`](https://pedantic.software/git/blogit/).

## Features and to-do

- [x] Build static site parsing `markdown` files ( `*.md` -> `*.html`)
	- [x] ~~Using plain `*.html` files for templates.~~ Changed to Jinja templates.
		- [x] Would like to change to something more flexible and easier to manage ([`jinja`](https://jinja.palletsprojects.com/en/3.0.x/), for example).
	- [x] Preserves hand-made `*.html` files.
	- [x] Tag functionality.
	- [ ] Open Graph (and similar) support. (Technically, this works if you add the correct metadata to the `*.md` files and use the variables available for Jinja)
- [x] Build `sitemap.xml` file.
	- [ ] Include manually added `*.html` files.
- [x] Build `rss.xml` file.
	- [ ] Join the `static_url` to all relative URLs found to comply with the [RSS 2.0 spec](https://validator.w3.org/feed/docs/rss2.html) (this would be added to the parsed HTML text extracted from the MD files, so it would be available to the created `*.html` and `*.xml` files). Note that depending on the reader, it will append the URL specified in the RSS file or use the [`xml:base`](https://www.rssboard.org/news/151/relative-links) specified ([newsboat](https://newsboat.org/) parses `xml:base`).
	- [ ] Include manually added `*.html` files.
- [x] Only build page if `*.md` is new or updated.
	- [ ] Extend this to tag pages and index (right now all tags and index is built no matter if no new/updated file is present).
- [x] Configuration file. ~~as an alternative to using command line flags (configuration file options are prioritized).~~ 
	- [x] Use [`configparser`](https://docs.python.org/3/library/configparser.html) instead of custom config handler.
	- [ ] Migrate to YAML instead of INI, as it is way more flexible.
- [x] Avoid the program to freak out when there are directories created in advance.
- [ ] Provide more meaningful error messages when you are missing mandatory tags in your `.md` files.
- [ ] More complex directory structure to support multiple subdomains and different types of pages.

### Markdown features

This program uses the base [`markdown` syntax](https://daringfireball.net/projects/markdown/syntax) plus additional syntax, all thanks to [`python-markdown`](https://python-markdown.github.io/) that provides [extensions](https://python-markdown.github.io/extensions/). The following extensions are used:

- Extra (collection of QoL extensions).
- Meta-Data.
- Sane Lists.
- SmartyPants.
- Table of Contents.
- WikiLinks.
- [yafg - Yet Another Figure Generator](https://git.sr.ht/~ferruck/yafg)
- [markdown.highlight](https://github.com/ribalba/markdown.highlight)
- [Markdown Checklist](https://github.com/FND/markdown-checklist)

## Installation

Just install it with `pip`:

```sh
pip install pyssg
```

Will add a PKBUILD (and possibly submit it to the AUR) sometime later.

## Usage

1. Get the default configuration file:

```sh
pyssg --copy-default-config -c <path/to/config>
```

Where `-c` is optional as by default `$XDG_CONFIG_HOME/pyssg/config.ini` is used.

2. Edit the config file created as needed.

- `config.ini` is parsed using Python's [`configparser`](https://docs.python.org/3/library/configparser.html), [more about the config file](#config-file).

3. Initialize the directory structures (source, destination, template) and move template files:

```sh
pyssg -i
```

- You can modify the basic templates as needed (see [variables available for Jinja](#available-jinja-variables)).

- Strongly recommended to edit the `rss.xml` template.

4. Place your `*.md` files somewhere inside the source directory. It accepts sub-directories.

- Remember to add the mandatory meta-data keys to your `.md` files, these are:

```
title: the title of your blog entry or whatever
author: your name or online handle
lang: the language the entry is written on
summary: a summary of the entry
```

- You can add more meta-data keys as long as it is [Python-Markdown compliant](https://python-markdown.github.io/extensions/meta_data/), and these will ve [available as Jinja variables](#available-jinja-variables).

- Also strongly recomended to add the `tags` metadata so that `pyssg` generates some nice filtering tags.

5. Build the `*.html` with:

```sh
pyssg -b
```

- After this, you have ready to deploy `*.html` files.

- For now, the building option also creates the `rss.xml` and `sitemap.xml` files based on templates, including only all converted `*.md` files (and processed tags in case of the sitemap), meaning that separate `*.html` files should be included manually in the template.

## Config file

All sections/options need to be compliant with the [`configparser`](https://docs.python.org/3/library/configparser.html).

At least the sections and options given in the default config should be present:

```ini
[path]
src=src # source
dst=dst # destination
plt=plt # template
[url]
main=https://example.com
static=https://static.example.com # used for static resources (images, js, css, etc)
default_image=/images/default.png # this will be appended to 'static' at the end
[fmt] # % needs to be escaped with another %
date=%%a, %%b %%d, %%Y @ %%H:%%M %%Z
list_date=%%b %%d
list_sep_date=%%B %%Y
[info]
title=Example site
[other]
force=False
```

Along with these, these extra ones will be added on runtime:

```ini
[fmt]
rss_date=%%a, %%d %%b %%Y %%H:%%M:%%S GMT # fixed
sitemap_date=%%Y-%%m-%%d # fixed
[info]
version= # current 'pyssg' version (0.5.1.dev16, for example)
rss_run_date= # date the program was run, formatted with 'rss_date'
sitemap_run_date= # date the program was run, formatted with 'sitemap_date'
```

You can add any other option/section that you can later use in the Jinja templates via the exposed config object. 

Other requisites are:

- Urls shouldn't have the trailing slash `/`.
- The only character that needs to be escaped is `%` with another `%`.

## Available Jinja variables

These variables are exposed to use within the templates. The below list is in the form of *variable (type) (available from): description*. `section/option` describe config file section and option and `object.attribute` corresponding object and it's attribute.

- `config` (`ConfigParser`) (all): parsed config file plus the added options internally (as described in [config file](#config-file)).
- `all_pages` (`list(Page)`) (all): list of all the pages, sorted by creation time, reversed.
- `page` (`Page`) (`page.html`): contains the following attributes (genarally these are parsed from the metadata in the `*.md` files):
	- `title` (`str`): title of the page.
	- `author` (`str`): author of the page.
	- `content` (`str`): actual content of the page, this is the `html`.
	- `cdatetime` (`str`): creation datetime object of the page.
	- `cdate` (`str`): formatted `cdatetime` as the config option `fmt/date`.
	- `cdate_list` (`str`): formatted `cdatetime` as the config option `fmt/list_date`.
	- `cdate_list_sep` (`str`): formatted `cdatetime` as the config option `fmt/list_sep_date`.
	- `cdate_rss` (`str`): formatted `cdatetime` as required by rss.
	- `cdate_sitemap` (`str`): formatted `cdatetime` as required by sitemap.
	- `mdatetime` (`str`): modification datetime object of the page. Defaults to `None`.
	- `mdate` (`str`): formatted `mdatetime` as the config option `fmt/date`. Defaults to `None`.
	- `mdate_list` (`str`): formatted `mdatetime` as the config option `fmt/list_date`.
	- `mdate_list_sep` (`str`): formatted `mdatetime` as the config option `fmt/list_sep_date`.
	- `mdate_rss` (`str`): formatted `mdatetime` as required by rss.
	- `mdate_sitemap` (`str`): formatted `mdatetime` as required by sitemap.
	- `summary` (`str`): summary of the page, as specified in the `*.md` file.
	- `lang` (`str`): page language, used for the general `html` tag `lang` attribute.
	- `tags` (`list(tuple(str))`): list of tuple of tags of the page, containing the name and the url of the tag, in that order. Defaults to empty list.
	- `url` (`str`): url of the page, this already includes the `url/main` from config file.
	- `image_url` (`str`): image url of the page, this already includes the `url/static`. Defaults to the `url/default_image` config option.
	- `next/previous` (`Page`): reference to the next or previous page object (containing all these attributes). Defaults to `None`.
	- `og` (`dict(str, str)`): dict for object graph metadata.
	- `meta` (`dict(str, list(str))`): meta dict as obtained from python-markdown, in case you use a meta tag not yet supported, it will be available there.
- `tag` (`tuple(str)`) (`tag.html`): tuple of name and url of the current tag.
- `tag_pages` (`list(Page)`) (`tag.html`): similar to `all_pages` but contains all the pages for the current tag.
- `all_tags` (`list(tuple(str))`) (all): similar to `page.tags` but contains all the tags.