import json, os, sys, urllib.parse, urllib.request, urllib.error

API = "https://api.securitytrails.com/v1"


def _cfg():
    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))


def request(method, path, params=None, body=None):
    url = API + path
    p = {k: str(x) for k, x in (params or {}).items() if x not in (None, "")}
    if p:
        url += ("&" if "?" in url else "?") + urllib.parse.urlencode(p)
    data = json.dumps(body).encode("utf-8") if body is not None else None
    headers = {"Accept": "application/json", "APIKEY": str(_cfg().get("api_key") or "")}
    if data is not None:
        headers["Content-Type"] = "application/json"
    req = urllib.request.Request(url, data=data, headers=headers, method=method)
    with urllib.request.urlopen(req, timeout=60) as r:
        raw = r.read()
        return json.loads(raw) if raw else {}


q = lambda v: urllib.parse.quote(str(v), safe="")


def main():
    inputs = json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
    domain = inputs.get("domain")
    if not domain:
        raise Exception("domain is required")
    record_type = inputs.get("record_type") or "a"
    res = request("GET", "/history/" + q(domain) + "/dns/" + q(record_type))
    print(json.dumps(res))


try:
    main()
except urllib.error.HTTPError as e:
    print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
    sys.exit(1)
except Exception as e:
    print(json.dumps({"error": str(e)}))
    sys.exit(1)