#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from __future__ import annotations

import sqlite3

import db_pool
from db.utils import get_cst_now_str

_OWNER_TYPES = {"user", "admin"}


def _normalize_owner_type(owner_type: str) -> str:
    normalized = str(owner_type or "").strip().lower()
    if normalized not in _OWNER_TYPES:
        raise ValueError(f"invalid owner_type: {owner_type}")
    return normalized


def list_passkeys(owner_type: str, owner_id: int) -> list[dict]:
    owner = _normalize_owner_type(owner_type)
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            """
            SELECT id, owner_type, owner_id, device_name, credential_id, transports,
                   sign_count, aaguid, created_at, last_used_at
            FROM passkeys
            WHERE owner_type = ? AND owner_id = ?
            ORDER BY datetime(created_at) DESC, id DESC
            """,
            (owner, int(owner_id)),
        )
        return [dict(row) for row in cursor.fetchall()]


def count_passkeys(owner_type: str, owner_id: int) -> int:
    owner = _normalize_owner_type(owner_type)
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            "SELECT COUNT(*) AS count FROM passkeys WHERE owner_type = ? AND owner_id = ?",
            (owner, int(owner_id)),
        )
        row = cursor.fetchone()
        if not row:
            return 0
        try:
            return int(row["count"] or 0)
        except Exception:
            try:
                return int(row[0] or 0)
            except Exception:
                return 0


def get_passkey_by_credential_id(credential_id: str) -> dict | None:
    credential = str(credential_id or "").strip()
    if not credential:
        return None

    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            """
            SELECT id, owner_type, owner_id, device_name, credential_id, public_key,
                   sign_count, transports, aaguid, created_at, last_used_at
            FROM passkeys
            WHERE credential_id = ?
            """,
            (credential,),
        )
        row = cursor.fetchone()
        return dict(row) if row else None


def get_passkey_by_id(owner_type: str, owner_id: int, passkey_id: int) -> dict | None:
    owner = _normalize_owner_type(owner_type)

    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            """
            SELECT id, owner_type, owner_id, device_name, credential_id, public_key,
                   sign_count, transports, aaguid, created_at, last_used_at
            FROM passkeys
            WHERE id = ? AND owner_type = ? AND owner_id = ?
            """,
            (int(passkey_id), owner, int(owner_id)),
        )
        row = cursor.fetchone()
        return dict(row) if row else None


def create_passkey(
    owner_type: str,
    owner_id: int,
    *,
    credential_id: str,
    public_key: str,
    sign_count: int,
    device_name: str,
    transports: str = "",
    aaguid: str = "",
) -> int | None:
    owner = _normalize_owner_type(owner_type)
    now = get_cst_now_str()

    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        try:
            cursor.execute(
                """
                INSERT INTO passkeys (
                    owner_type,
                    owner_id,
                    device_name,
                    credential_id,
                    public_key,
                    sign_count,
                    transports,
                    aaguid,
                    created_at,
                    last_used_at
                )
                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
                """,
                (
                    owner,
                    int(owner_id),
                    str(device_name or "").strip(),
                    str(credential_id or "").strip(),
                    str(public_key or "").strip(),
                    int(sign_count or 0),
                    str(transports or "").strip(),
                    str(aaguid or "").strip(),
                    now,
                    now,
                ),
            )
            conn.commit()
            return int(cursor.lastrowid)
        except sqlite3.IntegrityError:
            return None


def update_passkey_usage(passkey_id: int, new_sign_count: int) -> bool:
    now = get_cst_now_str()
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            """
            UPDATE passkeys
            SET sign_count = ?,
                last_used_at = ?
            WHERE id = ?
            """,
            (int(new_sign_count or 0), now, int(passkey_id)),
        )
        conn.commit()
        return cursor.rowcount > 0


def delete_passkey(owner_type: str, owner_id: int, passkey_id: int) -> bool:
    owner = _normalize_owner_type(owner_type)
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            "DELETE FROM passkeys WHERE id = ? AND owner_type = ? AND owner_id = ?",
            (int(passkey_id), owner, int(owner_id)),
        )
        conn.commit()
        return cursor.rowcount > 0