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#!/usr/bin/env python3

import json
import os
import re
import shutil
from dataclasses import dataclass
from datetime import datetime
from pathlib import Path

import jinja2
import typst


@dataclass
class Metadata:
    title: str
    date: datetime


def main() -> None:
    repo_dir = Path(__file__).parent
    site_dir = repo_dir / 'site'
    content_dir = site_dir / 'content'
    public_dir = repo_dir / 'public'

    shutil.rmtree(public_dir, ignore_errors=True)
    shutil.copytree(repo_dir / 'static', public_dir / 'static')

    os.environ['TYPST_FEATURES'] = 'html'

    pages: dict[Path, Metadata] = {}

    for path in content_dir.rglob('*.typ'):
        print(path)

        output_path = public_dir / path.relative_to(content_dir).with_suffix('.html')
        output_path.parent.mkdir(parents=True, exist_ok=True)

        metadata = json.loads(typst.query(
            root=site_dir,
            input=path,
            selector='<post-meta>',
            field='value',
            one=True,
        ))

        output_url = str(output_path.relative_to(public_dir))

        pages[output_url] = Metadata(
            title=metadata['title'],
            date=datetime(
                year=metadata['date_year'],
                month=metadata['date_month'],
                day=metadata['date_day'],
            ),
        )

        typst.compile(
            root=site_dir,
            input=path,
            output=output_path
        )

    print(pages)

    template = jinja2.Template(open(site_dir / 'index.html').read())
    open(public_dir / 'index.html', 'w').write(template.render(pages=pages))


if __name__ == '__main__':
    main()