"""E-Mail Tools (IMAP)."""

from core import config, mail_client

TOOLS = [
    {
        "type": "function",
        "function": {
            "name": "get_mail_summary",
            "description": "E-Mail Zusammenfassung: Letzte Mails, Absender, Betreff.",
            "parameters": {"type": "object", "properties": {}, "required": []},
        },
    },
    {
        "type": "function",
        "function": {
            "name": "get_mail_count",
            "description": "Anzahl E-Mails: gesamt und ungelesen.",
            "parameters": {"type": "object", "properties": {}, "required": []},
        },
    },
    {
        "type": "function",
        "function": {
            "name": "search_mail",
            "description": "Volltextsuche in E-Mails nach Betreff/Absender.",
            "parameters": {
                "type": "object",
                "properties": {
                    "query": {"type": "string", "description": "Suchbegriff"},
                    "days": {"type": "number", "description": "Zeitraum in Tagen (default: 30)", "default": 30}
                },
                "required": ["query"],
            },
        },
    },
    {
        "type": "function",
        "function": {
            "name": "get_todays_mails",
            "description": "Alle heutigen E-Mails auflisten.",
            "parameters": {"type": "object", "properties": {}, "required": []},
        },
    },
    {
        "type": "function",
        "function": {
            "name": "get_smart_mail_digest",
            "description": "KI-Zusammenfassung der letzten Mails: Was ist wichtig, was kann warten?",
            "parameters": {
                "type": "object",
                "properties": {
                    "hours": {"type": "number", "description": "Zeitraum in Stunden (default: 24)", "default": 24}
                },
                "required": [],
            },
        },
    },
]


def _cfg():
    cfg = config.parse_config()
    mail_client.init(cfg)
    return cfg


def handle_get_mail_summary(**kw):
    cfg = _cfg()
    return mail_client.format_summary()


def handle_get_mail_count(**kw):
    _cfg()
    counts = mail_client.get_mail_count()
    if "error" in counts:
        return f"Mail-Fehler: {counts['error']}"
    return f"E-Mails: {counts['total']} gesamt, {counts['unread']} ungelesen ({counts['account']})"


def handle_search_mail(query, days=30, **kw):
    _cfg()
    results = mail_client.search_mail(query, days=days)
    return mail_client.format_search_results(results)


def handle_get_todays_mails(**kw):
    _cfg()
    mails = mail_client.get_todays_mails()
    if not mails:
        return "Heute keine Mails eingegangen."
    if "error" in mails[0]:
        return f"Mail-Fehler: {mails[0]['error']}"
    lines = [f"{len(mails)} Mail(s) heute:\n"]
    for r in mails:
        lines.append(f"  {r['date_str']} | {r['from'][:35]}")
        lines.append(f"    -> {r['subject'][:70]}")
    return "\n".join(lines)


def handle_get_smart_mail_digest(hours=24, **kw):
    cfg = _cfg()
    api_key = cfg.api_keys.get("openrouter_key", "")
    digest = mail_client.get_smart_digest(hours=hours, api_key=api_key)
    return mail_client.format_smart_digest(digest)


HANDLERS = {
    "get_mail_summary": handle_get_mail_summary,
    "get_mail_count": handle_get_mail_count,
    "search_mail": handle_search_mail,
    "get_todays_mails": handle_get_todays_mails,
    "get_smart_mail_digest": handle_get_smart_mail_digest,
}