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

BASE = "https://api.cloudflare.com/client/v4"


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


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


def request(method, path, cfg, body=None, params=None):
    url = BASE + path
    if params:
        clean = {k: v for k, v in params.items() if v not in (None, "")}
        if clean:
            url += "?" + urllib.parse.urlencode(clean)
    data = json.dumps(body).encode("utf-8") if body is not None else None
    headers = {"Authorization": "Bearer " + str(cfg.get("api_token", "")), "Accept": "application/json"}
    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 {}


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)


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


def main(cfg, inputs):
    zone_id = inputs.get("zone_id")
    if not zone_id:
        raise Exception("zone_id is required")
    value = inputs.get("value")
    if not value:
        raise Exception("value is required")
    target = inputs.get("target") or "ip"
    mode = inputs.get("mode") or "block"
    notes = inputs.get("notes")
    body = {"mode": mode, "configuration": {"target": target, "value": value}}
    if notes:
        body["notes"] = notes
    return request("POST", "/zones/" + q(zone_id) + "/firewall/access_rules/rules", cfg, body=body)


_run(main)