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

BASE = "https://api.hunter.io/v2"


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


def _inputs():
    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))


def request(path, cfg, params=None):
    p = {k: v for k, v in (params or {}).items() if v not in (None, "")}
    p["api_key"] = str(cfg.get("api_key", ""))
    url = BASE + path + "?" + urllib.parse.urlencode(p)
    req = urllib.request.Request(url, headers={"Accept": "application/json"}, method="GET")
    with urllib.request.urlopen(req, timeout=60) as r:
        raw = r.read()
        return json.loads(raw) if raw else {}


def _run(fn):
    try:
        print(json.dumps(fn(_cfg(), _inputs())))
    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)


def main(cfg, inputs):
    domain = inputs.get("domain")
    if not domain:
        raise Exception("domain is required")
    first_name = inputs.get("first_name")
    if not first_name:
        raise Exception("first_name is required")
    last_name = inputs.get("last_name")
    if not last_name:
        raise Exception("last_name is required")
    return request("/email-finder", cfg, params={"domain": domain, "first_name": first_name, "last_name": last_name})


_run(main)