"""Conflict / military-movement overlay, backed by ACLED.

There is no single authoritative, free, real-time public feed of "military
movements" — ACLED (Armed Conflict Location & Event Data, acleddata.com) is
the closest widely-used open dataset of georeferenced, sourced conflict and
political-violence events, and offers free access for registered users. If
ACLED_API_KEY / ACLED_EMAIL are not configured, this module is a no-op and
the overlay simply stays empty in the UI rather than erroring.
"""

import datetime as dt
import logging

import httpx
from sqlalchemy import select
from sqlalchemy.orm import Session

from .config import settings
from .models import ConflictEvent

log = logging.getLogger("newsatlas.conflict")

ACLED_URL = "https://api.acleddata.com/acled/read"


def enabled() -> bool:
    return bool(settings.acled_api_key and settings.acled_email)


def poll_conflict_events(session: Session) -> int:
    if not enabled():
        log.info("ACLED credentials not configured; skipping conflict-event poll")
        return 0

    since = (dt.datetime.utcnow() - dt.timedelta(days=7)).strftime("%Y-%m-%d")
    params = {
        "key": settings.acled_api_key,
        "email": settings.acled_email,
        "event_date": since,
        "event_date_where": ">=",
        "limit": 500,
    }

    try:
        resp = httpx.get(ACLED_URL, params=params, timeout=30)
        resp.raise_for_status()
        payload = resp.json()
    except Exception:
        log.exception("Failed to fetch ACLED data")
        return 0

    added = 0
    for row in payload.get("data", []):
        external_id = str(row.get("event_id_cnty") or row.get("data_id"))
        exists = session.execute(
            select(ConflictEvent.id).where(
                ConflictEvent.source == "acled",
                ConflictEvent.external_id == external_id,
            )
        ).first()
        if exists:
            continue

        try:
            lat = float(row["latitude"])
            lon = float(row["longitude"])
            event_date = dt.datetime.strptime(row["event_date"], "%Y-%m-%d")
        except (KeyError, ValueError, TypeError):
            continue

        session.add(
            ConflictEvent(
                source="acled",
                external_id=external_id,
                event_type=row.get("event_type", ""),
                actor1=row.get("actor1", ""),
                actor2=row.get("actor2", ""),
                fatalities=int(row["fatalities"]) if str(row.get("fatalities", "")).isdigit() else None,
                notes=row.get("notes", ""),
                location_name=row.get("location", ""),
                country=row.get("country", ""),
                lat=lat,
                lon=lon,
                event_date=event_date,
            )
        )
        added += 1

    session.commit()
    return added