const baseUrl = window.location.origin;

const variantsByApp = {
  haproxy: [
    { value: "map", label: "map (recommended)" },
    { value: "acl", label: "acl" },
    { value: "lua", label: "lua" },
  ],
  apache: [
    { value: "24", label: "24 (recommended)" },
    { value: "22", label: "22 (legacy)" },
  ],
  nginx: [
    { value: "geo", label: "geo (recommended)" },
    { value: "deny", label: "deny (recommended)" },
    { value: "map", label: "map (not recommended)" },
  ],
};

function $(id) { return document.getElementById(id); }

function setBaseUrl() {
  const el = $("baseUrl");
  if (el) el.textContent = baseUrl;
}

function normalizeCountries(input) {
  return String(input || "")
    .split(",")
    .map(s => s.trim().toUpperCase())
    .filter(Boolean);
}

function updateModeUI() {
  const mode = $("pyMode").value;

  const rawOn = mode === "raw";
  const genOn = mode === "generate";

  $("pyRawFormatBox").style.display = rawOn ? "block" : "none";
  $("pyAsJsBox").style.display = rawOn ? "block" : "none";
  $("pyJsVarBox").style.display = rawOn ? "block" : "none";

  $("pyAppTypeBox").style.display = genOn ? "block" : "none";
  $("pyAppVariantBox").style.display = genOn ? "block" : "none";

  if (genOn) {
    updateVariantOptions();
  } else {
    updateRawJsFields();
  }
}

function updateVariantOptions() {
  const app = $("pyAppType").value;
  const select = $("pyAppVariant");
  const hint = $("variantHint");

  select.innerHTML = "";
  (variantsByApp[app] || []).forEach(v => {
    const opt = document.createElement("option");
    opt.value = v.value;
    opt.textContent = v.label;
    select.appendChild(opt);
  });

  if (app === "haproxy") hint.textContent = "Recommended: haproxy + map";
  else if (app === "apache") hint.textContent = "Recommended: apache + 24";
  else if (app === "nginx") hint.textContent = "Recommended: nginx + geo or deny (avoid map)";
  else hint.textContent = "";
}

function updateRawJsFields() {
  const fmt = $("pyRawFormat").value;
  const asJs = $("pyAsJs").value === "true";

  const allowJs = fmt === "raw-cidr_json";
  $("pyAsJs").disabled = !allowJs;
  $("pyJsVar").disabled = !allowJs || !asJs;

  if (!allowJs) {
    $("pyAsJs").value = "false";
  }
}

function buildPythonScript() {
  const mode = $("pyMode").value;
  const countries = normalizeCountries($("pyCountries").value);
  const aggregate = $("pyAggregate").value === "true";
  const useCache = $("pyCache").value === "true";

  let endpoint = "";
  const payload = { countries, aggregate, use_cache: useCache };

  if (mode === "raw") {
    endpoint = "/api/generate/raw";
    payload.app_type = $("pyRawFormat").value;

    if (payload.app_type === "raw-cidr_json") {
      const asJs = $("pyAsJs").value === "true";
      payload.as_js = asJs;
      if (asJs) payload.js_var = $("pyJsVar").value || "geoipBlocklist";
    }
  } else {
    endpoint = "/api/generate";
    payload.app_type = $("pyAppType").value;
    payload.app_variant = $("pyAppVariant").value;
  }

  const payloadJson = JSON.stringify(payload, null, 4);

  const script = `#!/usr/bin/env python3
import json
import re
import requests

BASE_URL = ${JSON.stringify(baseUrl)}
ENDPOINT = ${JSON.stringify(endpoint)}

payload_json = """${payloadJson}"""
payload = json.loads(payload_json)

resp = requests.post(BASE_URL + ENDPOINT, json=payload, timeout=120)

print("Status:", resp.status_code)
print("X-From-Cache:", resp.headers.get("X-From-Cache"))
print("X-Cache-Type:", resp.headers.get("X-Cache-Type"))
print("X-Generated-At:", resp.headers.get("X-Generated-At"))

ct = (resp.headers.get("Content-Type") or "").lower()

if resp.status_code >= 400:
    try:
        print(json.dumps(resp.json(), indent=2))
    except Exception:
        print(resp.text)
    raise SystemExit(1)

if "application/json" in ct:
    print(json.dumps(resp.json(), indent=2))
else:
    filename = "output"
    cd = resp.headers.get("Content-Disposition") or ""
    m = re.search(r'filename="?([^"]+)"?', cd)
    if m:
        filename = m.group(1)
    else:
        if "text/csv" in ct:
            filename += ".csv"
        elif "javascript" in ct:
            filename += ".js"
        elif "text/plain" in ct:
            filename += ".txt"
        else:
            filename += ".bin"

    with open(filename, "wb") as f:
        f.write(resp.content)

    print("Saved to:", filename)
`;

  $("pythonScriptOutput").textContent = script;
}

async function copyPythonScript() {
  const text = $("pythonScriptOutput").textContent || "";
  await navigator.clipboard.writeText(text);
}

function bind() {
  const topCopy = document.getElementById("btnCopyPyTop");
  if (topCopy) topCopy.addEventListener("click", copyPythonScript);

  $("pyMode").addEventListener("change", updateModeUI);

  $("pyAppType").addEventListener("change", updateVariantOptions);
  $("pyRawFormat").addEventListener("change", updateRawJsFields);
  $("pyAsJs").addEventListener("change", updateRawJsFields);

  $("btnGenPy").addEventListener("click", () => {
    updateRawJsFields();
    buildPythonScript();
  });

  $("btnCopyPy").addEventListener("click", copyPythonScript);

  updateModeUI();
  buildPythonScript();
}

document.addEventListener("DOMContentLoaded", () => {
  setBaseUrl();
  bind();
});