"""Opt-in, minimal, HTTPS-only telemetry and update checks."""
import os
from urllib.parse import urlparse


def _https_endpoint(env_name):
    endpoint = os.environ.get(env_name, "").strip()
    if not endpoint:
        return ""
    parsed = urlparse(endpoint)
    if parsed.scheme != "https" or not parsed.netloc or parsed.username or parsed.password:
        raise ValueError("%s must be an HTTPS URL without embedded credentials" % env_name)
    return endpoint


def heartbeat_payload(sequence):
    from framework.settings import PROJECT_FLAG, PROJECT_VERSION
    return {
        "event": "heartbeat",
        "product": PROJECT_FLAG,
        "version": PROJECT_VERSION,
        "sequence": int(sequence),
    }


def send_heartbeat(sequence, session=None):
    from app.utils.GlobalUtils import g_config
    if not getattr(g_config, "telemetryEnabled", False):
        return False, "telemetry disabled"
    endpoint = _https_endpoint("MONITOR_TELEMETRY_ENDPOINT")
    if not endpoint:
        return False, "telemetry endpoint not configured"
    if session is None:
        import requests
        session = requests
    response = session.post(
        endpoint, json=heartbeat_payload(sequence), timeout=10, allow_redirects=False
    )
    return response.status_code == 200, "status=%s" % response.status_code


def check_update(lang=None, session=None):
    from app.utils.GlobalUtils import g_config
    if not getattr(g_config, "updateCheckEnabled", False):
        return False, False, "update check disabled", {}
    endpoint = _https_endpoint("MONITOR_UPDATE_ENDPOINT")
    if not endpoint:
        return False, False, "update endpoint not configured", {}
    from framework.settings import PROJECT_FLAG, PROJECT_VERSION
    payload = {"product": PROJECT_FLAG, "version": PROJECT_VERSION, "lang": (lang or "")[:12]}
    if session is None:
        import requests
        session = requests
    try:
        response = session.post(endpoint, json=payload, timeout=10, allow_redirects=False)
        if response.status_code != 200:
            return True, False, "status=%s" % response.status_code, {}
        result = response.json()
        if result.get("code") == 1000:
            return True, True, str(result.get("msg", "ok")), result.get("data") or {}
        return True, False, str(result.get("msg", "no update")), {}
    except Exception as exc:
        return False, False, str(exc), {}