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#!/usr/bin/env python3
"""Build sites from body.html + meta into index.html using shared templates."""
import json
import os
import sys

FAVICON = "data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNDAiIGhlaWdodD0iMTQwIiBzdHJva2U9IiMwMDAiPjxwYXRoIHN0cm9rZS13aWR0aD0iMTIyIiBzdHJva2UtZGFzaGFycmF5PSIyLDM4IiBkPSJtOSw3MGgxMjJNNzAsOXYxMjIiLz48cGF0aCBzdHJva2Utd2lkdGg9IjMzIiBzdHJva2UtbGluZWNhcD0icm91bmQiIGQ9Im03MCwzMGgwbTQwLDQwaDBtLTgwLDQwdjBtNDAsMGgwbTQwLDBoMCIvPjwvc3ZnPg=="


def render(title, breadcrumb, style, extra_css, body, footer):
    css = style + ("\n" + extra_css if extra_css.strip() else "")
    return f"""<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link rel="icon" type="image/svg+xml" href="{FAVICON}">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>{title}</title>
<style>
{css}
</style>
</head>
<body>
<header>
<h1><a href="https://gumx.cc">gumx</a> / {breadcrumb}</h1>
</header>
<main>
{body}
</main>
{footer}
</body>
</html>
"""


def build_demo_body(demos_file):
    demos = json.load(open(demos_file))
    parts = []
    for d in demos:
        url = d.get("url", "#")
        title = d.get("title", d.get("name", ""))
        desc = d.get("description", "")
        src = d.get("source", "")
        src_link = f' / <a href="{src}">source</a>' if src else ""
        parts.append(f'<p><a href="{url}">{title}</a>{src_link}</p>\n<p>{desc}</p>')
    return "\n".join(parts)


def build(sites_dir):
    shared = os.path.join(sites_dir, "_shared")
    style = open(os.path.join(shared, "style.css")).read()
    footer = open(os.path.join(shared, "footer.html")).read()

    for site in sorted(os.listdir(sites_dir)):
        if site.startswith("_") or site == "fonts" or site == "hooks":
            continue
        site_dir = os.path.join(sites_dir, site)
        if not os.path.isdir(site_dir):
            continue

        body_file = os.path.join(site_dir, "body.html")
        demos_file = os.path.join(site_dir, "demos.json")

        if site == "demo.gumx.cc" and os.path.exists(demos_file):
            body = build_demo_body(demos_file)
        elif os.path.exists(body_file):
            body = open(body_file).read()
        else:
            continue

        title = site
        breadcrumb = site
        meta_file = os.path.join(site_dir, "meta")
        if os.path.exists(meta_file):
            for line in open(meta_file):
                k, _, v = line.strip().partition("=")
                if k == "TITLE":
                    title = v.strip('"')
                elif k == "BREADCRUMB":
                    breadcrumb = v.strip('"')

        extra_css = ""
        extra_file = os.path.join(site_dir, "extra.css")
        if os.path.exists(extra_file):
            extra_css = open(extra_file).read()

        out = render(title, breadcrumb, style, extra_css, body, footer)
        with open(os.path.join(site_dir, "index.html"), "w") as f:
            f.write(out)
        print(f"built: {site}")


if __name__ == "__main__":
    build(sys.argv[1] if len(sys.argv) > 1 else ".")