"""Daily briefing: formatting and ntfy delivery.

The data itself is gathered in app.main (it needs the board helpers);
this module only turns it into a readable text and pushes it to an
ntfy topic. Kept dependency-light so it is unit-testable alone.
"""

from __future__ import annotations

import httpx

from app.config import Settings


def ntfy_configured(settings: Settings) -> bool:
    return bool(settings.ntfy_url and settings.ntfy_topic)


def format_briefing_text(data: dict) -> str:
    """Plain-text briefing (ntfy body, also shown on /briefing)."""
    lines: list[str] = [f"📋 Kanbante — briefing du {data['date']}"]
    activity = data["activity_24h"]
    lines.append(
        f"\n⚡ Dernières 24 h : {activity['closed']} fermée(s), "
        f"{activity['created']} créée(s), {activity['moved']} déplacement(s)."
    )
    if activity.get("avg_cycle_days") is not None:
        lines.append(f"⏱️ Temps de cycle moyen (30 j) : {activity['avg_cycle_days']} j.")

    lines.append(f"\n🎯 En cours / en révision : {data['focus_total']} carte(s)")
    for group in data["focus_groups"][:6]:
        lines.append(f"  • {group['full_name']} : {group['count']}")
        for title in group["titles"][:3]:
            lines.append(f"      – {title}")

    if data["aging"]:
        lines.append("\n⏳ Cartes qui vieillissent :")
        for card in data["aging"][:8]:
            lines.append(
                f"  • {card['repo']} #{card['number']} « {card['title']} » "
                f"— {card['days']} j en {card['column_label']}"
            )

    if data["milestones_due"]:
        lines.append("\n📅 Milestones proches :")
        for ms in data["milestones_due"][:5]:
            lines.append(
                f"  • {ms['repo']} « {ms['title']} » — échéance "
                f"{ms['due_on']} ({ms['open']} ouverte(s))"
            )

    if data["focus_total"] == 0 and not data["aging"]:
        lines.append("\n🎉 Rien d'urgent : aucun encours, aucune carte vieillissante.")
    return "\n".join(lines)


async def send_ntfy(settings: Settings, text: str) -> bool:
    """POST the briefing to the configured ntfy topic. True on 2xx."""
    if not ntfy_configured(settings):
        return False
    url = f"{settings.ntfy_url.rstrip('/')}/{settings.ntfy_topic}"
    headers = {
        # ntfy headers must stay ASCII; the body carries the accents.
        "Title": "Kanbante - briefing du jour",
        "Tags": "clipboard,chart_with_upwards_trend",
    }
    if settings.ntfy_token:
        headers["Authorization"] = f"Bearer {settings.ntfy_token}"
    async with httpx.AsyncClient(timeout=15.0) as client:
        response = await client.post(url, content=text.encode("utf-8"), headers=headers)
    return response.status_code < 300