#!/usr/bin/env python3
"""Generate README.md from index.json."""

import json
from pathlib import Path

DIR = Path(__file__).parent
data = json.loads((DIR / "index.json").read_text(encoding="utf-8"))


def sort_key(s):
    """OFFICIAL first, then BETA, then by stars desc, then name asc."""
    return (
        0 if s.get("official") else 1,
        0 if s.get("beta") else 1,
        -s.get("stars", 0),
        s["name"]
    )


lines = []
w = lines.append

w((DIR / "header.md").read_text(encoding="utf-8").rstrip())

# --- TOC ---
categories = sorted(set(s["category"] for s in data["servers"]))
w("")
for cat in categories:
    anchor = cat.lower().replace(" ", "-").replace("(", "").replace(")", "")
    w(f"- [{cat}](#{anchor})")

for cat in categories:
    servers = sorted((s for s in data["servers"] if s["category"] == cat), key=sort_key)

    w("")
    w(f"## {cat}")
    w("")

    for s in servers:
        badge = ""
        if s.get("official"):
            badge = " ![OFFICIAL](badges/official.svg)"
        elif s.get("beta"):
            badge = " ![BETA](badges/beta.svg)"
        note = s.get("note", "")

        w(f'- [{s["name"]}]({s["url"]}){badge} — {s["description"]}')

        details = [f"⭐ {s['stars']}"]
        c = s.get("contributors")
        if c:
            details.append(f"{c} Contributors")
        if note:
            details.append(note)

        w(f'  {" · ".join(details)}')

# --- Footer ---
w("")
w((DIR / "footer.md").read_text(encoding="utf-8").rstrip())

(DIR / "README.md").write_text("\n".join(lines) + "\n", encoding="utf-8")
print("README.md generated from index.json")