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

import db_pool
from crypto_utils import decrypt_password, encrypt_password
from db.utils import get_cst_now_str


def create_account(user_id, account_id, username, password, remember=True, remark=""):
    """创建账号（密码加密存储）"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cst_time = get_cst_now_str()
        encrypted_password = encrypt_password(password)
        cursor.execute(
            """
            INSERT INTO accounts (id, user_id, username, password, remember, remark, created_at)
            VALUES (?, ?, ?, ?, ?, ?, ?)
            """,
            (account_id, user_id, username, encrypted_password, 1 if remember else 0, remark, cst_time),
        )
        conn.commit()
        return cursor.lastrowid


def get_user_accounts(user_id):
    """获取用户的所有账号（自动解密密码）"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute("SELECT * FROM accounts WHERE user_id = ? ORDER BY created_at DESC", (user_id,))
        accounts = []
        for row in cursor.fetchall():
            account = dict(row)
            account["password"] = decrypt_password(account.get("password", ""))
            accounts.append(account)
        return accounts


def get_account(account_id):
    """获取单个账号（自动解密密码）"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute("SELECT * FROM accounts WHERE id = ?", (account_id,))
        row = cursor.fetchone()
        if row:
            account = dict(row)
            account["password"] = decrypt_password(account.get("password", ""))
            return account
        return None


def update_account_remark(account_id, remark):
    """更新账号备注"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute("UPDATE accounts SET remark = ? WHERE id = ?", (remark, account_id))
        conn.commit()
        return cursor.rowcount > 0


def delete_account(account_id):
    """删除账号"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute("DELETE FROM accounts WHERE id = ?", (account_id,))
        conn.commit()
        return cursor.rowcount > 0


def increment_account_login_fail(account_id, error_message):
    """增加账号登录失败次数，如果达到3次则暂停账号"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()

        cursor.execute("SELECT login_fail_count FROM accounts WHERE id = ?", (account_id,))
        row = cursor.fetchone()
        if not row:
            return False

        fail_count = (row["login_fail_count"] or 0) + 1

        if fail_count >= 3:
            cursor.execute(
                """
                UPDATE accounts
                SET login_fail_count = ?,
                    last_login_error = ?,
                    status = 'suspended'
                WHERE id = ?
                """,
                (fail_count, error_message, account_id),
            )
            conn.commit()
            return True

        cursor.execute(
            """
            UPDATE accounts
            SET login_fail_count = ?,
                last_login_error = ?
            WHERE id = ?
            """,
            (fail_count, error_message, account_id),
        )
        conn.commit()
        return False


def reset_account_login_status(account_id):
    """重置账号登录状态（修改密码后调用）"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            """
            UPDATE accounts
            SET login_fail_count = 0,
                last_login_error = NULL,
                status = 'active'
            WHERE id = ?
            """,
            (account_id,),
        )
        conn.commit()
        return cursor.rowcount > 0


def get_account_status(account_id):
    """获取账号状态信息"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute(
            """
            SELECT status, login_fail_count, last_login_error
            FROM accounts
            WHERE id = ?
            """,
            (account_id,),
        )
        return cursor.fetchone()


def get_account_status_batch(account_ids):
    """批量获取账号状态信息"""
    account_ids = [str(account_id) for account_id in (account_ids or []) if account_id]
    if not account_ids:
        return {}

    results = {}
    chunk_size = 900  # 避免触发 SQLite 绑定参数上限
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        for idx in range(0, len(account_ids), chunk_size):
            chunk = account_ids[idx : idx + chunk_size]
            placeholders = ",".join("?" for _ in chunk)
            cursor.execute(
                f"""
                SELECT id, status, login_fail_count, last_login_error
                FROM accounts
                WHERE id IN ({placeholders})
                """,
                chunk,
            )
            for row in cursor.fetchall():
                row_dict = dict(row)
                account_id = str(row_dict.pop("id", ""))
                if account_id:
                    results[account_id] = row_dict

    return results


def delete_user_accounts(user_id):
    """删除用户的所有账号"""
    with db_pool.get_db() as conn:
        cursor = conn.cursor()
        cursor.execute("DELETE FROM accounts WHERE user_id = ?", (user_id,))
        conn.commit()
        return cursor.rowcount