import json
from typing import Any

from app.db.database import get_connection


def log_audit_event(
    user,
    action: str,
    target_type: str,
    target_id=None,
    source: str = "portal",
    metadata: dict[str, Any] | None = None,
):
    if user:
        user_id = user.get("id")
        username = user.get("username") or "system"
    else:
        user_id = None
        username = "system"
        source = "system"

    metadata_json = json.dumps(metadata or {}, ensure_ascii=False, sort_keys=True)

    con = get_connection()
    con.execute(
        """
        INSERT INTO audit_events (
            user_id,
            username,
            action,
            target_type,
            target_id,
            source,
            metadata,
            created_at
        )
        VALUES (?, ?, ?, ?, ?, ?, ?, CURRENT_TIMESTAMP)
        """,
        (
            user_id,
            username,
            action,
            target_type,
            target_id,
            source,
            metadata_json,
        ),
    )
    con.commit()
    con.close()


def get_audit_events(limit: int = 200):
    con = get_connection()

    rows = con.execute(
        """
        SELECT
            id,
            user_id,
            username,
            action,
            target_type,
            target_id,
            source,
            metadata,
            created_at
        FROM audit_events
        ORDER BY id DESC
        LIMIT ?
        """,
        (limit,),
    ).fetchall()

    con.close()
    return [dict(row) for row in rows]