import logging

import httpx

logger = logging.getLogger(__name__)

MESSENGER_API_BASE = "https://graph.facebook.com/v22.0"


class MessengerInsightsAPI:
    def __init__(self, page_id: str, access_token: str):
        self._page_id = page_id
        self._access_token = access_token

    async def get_page_messages_metrics(self) -> dict | None:
        url = f"{MESSENGER_API_BASE}/{self._page_id}/insights"
        metrics = [
            "page_messages_active_threads_unique",
            "page_messages_blocked_conversations_unique",
            "page_messages_reported_conversations_unique",
            "page_messages_reported_conversations_by_report_type_unique",
        ]
        params = {
            "metric": ",".join(metrics),
            "access_token": self._access_token,
        }
        try:
            async with httpx.AsyncClient(timeout=httpx.Timeout(30.0)) as client:
                resp = await client.get(url, params=params)
                if resp.status_code == 200:
                    return resp.json()
                logger.error(f"messenger insights failed: {resp.status_code} {resp.text}")
                return None
        except Exception:
            logger.exception("messenger insights error")
            return None

    async def get_conversation_counts(self, since: str = "", until: str = "") -> dict | None:
        url = f"{MESSENGER_API_BASE}/{self._page_id}/conversations"
        params = {"access_token": self._access_token, "fields": "message_count,unread_count,updated_time"}
        if since:
            params["since"] = since
        if until:
            params["until"] = until
        try:
            async with httpx.AsyncClient(timeout=httpx.Timeout(30.0)) as client:
                resp = await client.get(url, params=params)
                if resp.status_code == 200:
                    return resp.json()
                logger.error(f"messenger conversations failed: {resp.status_code} {resp.text}")
                return None
        except Exception:
            logger.exception("messenger conversations error")
            return None