import { Context } from "netlify:edge";

const schemaVersion = 1;
const label = "OPA";
const releases = "https://api.github.com/repos/open-policy-agent/opa/releases/latest";

// OPA logo SVG
const logoSvg =
  "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?><!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"><svg width=\"100%\" height=\"100%\" viewBox=\"0 0 34 34\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xml:space=\"preserve\" style=\"fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:1.41421;\"><g><path d=\"M7.988,0.343c0,0 -1.84,6.196 -1.71,8.032c0.092,1.292 2.493,2.982 2.493,2.982c0,0 -1.308,1.552 -1.813,2.423c-0.521,0.898 -1.313,2.963 -1.313,2.963c0,0 -3.938,-4.622 -3.614,-6.89c0.391,-2.734 5.957,-9.51 5.957,-9.51Z\" style=\"fill:#bfbfbf;\"/><path d=\"M25.857,0.343c0,0 1.84,6.196 1.71,8.032c-0.092,1.292 -2.493,2.982 -2.493,2.982c0,0 1.307,1.552 1.813,2.423c0.521,0.898 1.313,2.963 1.313,2.963c0,0 3.938,-4.622 3.614,-6.89c-0.391,-2.734 -5.957,-9.51 -5.957,-9.51Z\" style=\"fill:#bfbfbf;\"/><path d=\"M16.984,7.6c-5.216,0 -9.819,3.695 -11.344,9.106l11.344,3.763l0,-12.869Z\" style=\"fill:#7d9199;\"/><path d=\"M16.974,7.58c5.215,0 9.819,3.696 11.343,9.107l-11.343,3.762l0,-12.869Z\" style=\"fill:#566366;\"/><path d=\"M16.954,16.7l-11.336,0l0,7.923c0,0 4.577,1.795 6.467,3.245c1.569,1.204 4.588,5.459 4.588,5.459l0.281,-0.002l0,-16.625Z\" style=\"fill:#7d9199;\"/><path d=\"M16.96,16.59l11.337,0l0,7.923c0,0 -4.578,1.795 -6.467,3.245c-1.612,1.238 -4.601,5.567 -4.601,5.567l-0.275,0l0.006,-16.735Z\" style=\"fill:#566366;\"/><circle cx=\"16.963\" cy=\"16.32\" r=\"1.427\" style=\"fill:#fff;\"/></g></svg>";

export default async (req: Request, context: Context) => {
  const url = new URL(req.url);
  const host = req.headers.get("host");

  const pathParts = url.pathname.split("/").filter(Boolean); // remove empty parts
  const query = url.searchParams;

  // Handle /badge/config/:tag
  if (pathParts.length === 3 && pathParts[0] === "badge" && pathParts[1] === "config") {
    const tag = pathParts[2];

    const latest = await fetch(releases)
      .then((response) => response.json())
      .then((data) => data.tag_name)
      .catch(() => "unknown");

    const res = {
      schemaVersion,
      label,
      logoSvg,
      message: tag,
      color: latest === tag ? "green" : "yellow",
    };

    return context.json(res);
  }

  // Handle /badge/:tag
  if (pathParts.length === 2 && pathParts[0] === "badge") {
    const tag = pathParts[1];
    const style = query.get("style");

    // Build dynamic badge endpoint URL using current host
    const base = `https://${host}/badge/config/${tag}`;
    const encodedUrl = encodeURIComponent(base);

    let redirectUrl = `https://img.shields.io/endpoint?url=${encodedUrl}`;
    if (style) {
      redirectUrl += `&style=${encodeURIComponent(style)}`;
    }

    return Response.redirect(redirectUrl, 302);
  }

  return new Response("Not Found", { status: 404 });
};