import json, os, sys, 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 post(cfg, payload):
    url = str(cfg.get("webhook_url", ""))
    if not url:
        raise Exception("webhook_url is not configured")
    data = json.dumps(payload).encode("utf-8")
    headers = {"Content-Type": "application/json"}
    req = urllib.request.Request(url, data=data, headers=headers, method="POST")
    with urllib.request.urlopen(req, timeout=60) as r:
        r.read()
        return r.status


def adaptive_card(body_blocks, actions=None):
    card = {
        "type": "AdaptiveCard",
        "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
        "version": "1.4",
        "body": body_blocks,
    }
    if actions:
        card["actions"] = actions
    return {
        "type": "message",
        "attachments": [
            {"contentType": "application/vnd.microsoft.card.adaptive", "content": card}
        ],
    }


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):
    title = str(inputs.get("title", "")).strip()
    if not title:
        raise Exception("title is required")

    text = str(inputs.get("text", "")).strip()
    facts_raw = str(inputs.get("facts", "")).strip()
    action_title = str(inputs.get("action_title", "")).strip()
    action_url = str(inputs.get("action_url", "")).strip()

    if action_title and not action_url:
        raise Exception("action_url is required when action_title is set")

    blocks = [{"type": "TextBlock", "text": title, "weight": "Bolder", "size": "Large", "wrap": True}]

    if text:
        blocks.append({"type": "TextBlock", "text": text, "wrap": True})

    if facts_raw:
        facts = []
        for pair in facts_raw.split(","):
            if "=" not in pair:
                continue
            k, v = pair.split("=", 1)
            facts.append({"title": k.strip(), "value": v.strip()})
        if facts:
            blocks.append({"type": "FactSet", "facts": facts})

    actions = None
    if action_title and action_url:
        actions = [{"type": "Action.OpenUrl", "title": action_title, "url": action_url}]

    payload = adaptive_card(blocks, actions)
    status = post(cfg, payload)
    return {"ok": True, "status": status}


_run(main)