from functools import wraps
from flask import g, redirect, url_for, flash, request

def login_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if g.user is None:
            flash('请先登录', 'warning')
            return redirect(url_for('user.login', next=request.url))
        return f(*args, **kwargs)
    return decorated_function

def admin_required(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if g.user is None:
            flash('请先登录', 'warning')
            return redirect(url_for('user.login', next=request.url))
        if g.user.role_id != 1:  # 假设role_id=1是管理员
            flash('权限不足', 'danger')
            return redirect(url_for('index'))
        return f(*args, **kwargs)
    return decorated_function