import json, os, sys, base64, urllib.parse, urllib.request, urllib.error


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


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


def _base(cfg):
    return str(cfg.get("base_url", "")).rstrip("/") + "/rest/api"


def _auth(cfg):
    raw = str(cfg.get("email", "")) + ":" + str(cfg.get("api_token", ""))
    return "Basic " + base64.b64encode(raw.encode("utf-8")).decode("utf-8")


def request(method, path, cfg, body=None, params=None):
    url = _base(cfg) + 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": _auth(cfg), "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):
    page_id = inputs.get("page_id")
    if not page_id:
        raise Exception("page_id is required")
    title = inputs.get("title")
    if not title:
        raise Exception("title is required")
    body = inputs.get("body")
    if not body:
        raise Exception("body is required")
    version = inputs.get("version")
    if version in (None, ""):
        raise Exception("version is required")

    return request(
        "PUT",
        "/content/" + q(page_id),
        cfg,
        body={
            "type": "page",
            "title": title,
            "version": {"number": int(version)},
            "body": {"storage": {"value": body, "representation": "storage"}},
        },
    )


_run(main)