import os
import hashlib
import uuid
import aioredis
from mycode.DBManager import app_DBM
from quart import Quart, render_template, request, session, redirect, url_for,jsonify,send_file,flash,current_app
from quart_sqlalchemy import SQLAlchemy
from quart_session import Session
from web.common.utils import generate_captcha,login_required
from myutils.ConfigManager import myCongif
from web.common.errors import handle_error
from . import api

@api.route('/user/code',methods=['GET'])
async def user_get_code():  #获取验证码
    captcha_text, buffer = generate_captcha()
    print(captcha_text)
    session['captcha'] = captcha_text  # 记录验证码？
    return await send_file(buffer, mimetype='image/png')


@api.route('/user/login',methods=['POST'])
async def user_login(): #用户登录
    try:
        form = await request.form
        username = form['username']
        password = form['password']
        captcha = form['captcha']
    except Exception as e:
        await flash('请求数据格式错误', 'error')
        return redirect(url_for('main.login'))
        #return jsonify({'error': '请求数据格式错误'}), 400

    if captcha != session.get('captcha'):
        # 验证码验证过后，需要失效
        session.pop('captcha', None)
        await flash('验证码错误', 'error')
        return redirect(url_for('main.login'))
        #return jsonify({'error': '验证码错误'}), 400
        #return 'captcha error!', 400
    #比对用户名和密码
    strsql = f"select password from user where username = '{username}';"
    db_password = app_DBM.do_select(strsql,1)
    passwd_md5 = get_md5(password)
    if db_password:
        if db_password[0] == passwd_md5:  #后续需要对密码进行MD5加默
            # 生成新的登录 token
            login_token = uuid.uuid4().hex
            # 写入 Redis：key = user_token:<username>
            await current_app.redis.set(f"user_token:{username}", login_token)
            session['user'] = username
            session['token'] = login_token

            return redirect(url_for('main.get_html', html='index.html'))
    await flash('用户名或密码错误', 'error')
    return redirect(url_for('main.login'))

@api.route('/user/userinfo',methods=['GET'])
@login_required
async def user_info():  #获取用户列表
    strsql = "select username,status,people,tellnum from user;"
    data = app_DBM.do_select(strsql)
    if data:
        user_list = [{"username": user[0], "status": user[1],
                      "people":user[2],"tellnum":user[3]} for user in data]
        return jsonify(user_list)
    else:
        return jsonify(0)

#登出接口，清除 Redis 和 Session ---
@api.route('/user/logout')
async def user_logout():
    username = session.get('user')
    if username:
        await current_app.redis.delete(f"user_token:{username}")
    session.clear()
    return redirect(url_for('main.login'))

@api.route('/user/passwd',methods=['POST'])
@login_required
async def user_change_passwd(): #修改密码
    json_data = await request.get_json()
    oldpasswd = json_data.get('oldpasswd')
    newpasswd = json_data.get('newpasswd')
    old_md5= get_md5(oldpasswd)
    print(old_md5)
    strsql = f"select id from user where password='{old_md5}';"
    data = app_DBM.do_select(strsql,1)
    reStatus = 0
    if data:
        new_md5 = get_md5(newpasswd)
        strsql = f"update user set password = '{new_md5}' where password = '{old_md5}';"
        ret = app_DBM.do_sql(strsql)
        if ret:
            reStatus = 1
            reMsg = '修改密码成功'
        else:
            reMsg = '修改密码失败，请联系技术支持！'
    else:
        reMsg = '原密码错误，请确认！'
    return jsonify({'status':reStatus,'msg':reMsg})


@api.route('/user/changeuser',methods=['POST'])
@login_required
async def user_change_user_info(): #修改用户信息
    username = (await request.form)['username']
    people = (await request.form)['people']
    tellnum = (await request.form)['tellnum']
    strsql = f"update user set people='{people}',tellnum='{tellnum}' where username='{username}';"
    ret = app_DBM.do_sql(strsql)
    if ret == True:
        reStatus = 1
        reMsg = '修改用户信息成功'
    else:
        reStatus = 0
        reMsg = '修改失败，请联系管理员处理！'
    return jsonify({'status': reStatus, 'msg': reMsg})

@api.route('/user/<int:user_id>', methods=['GET'])
async def get_user(user_id):
    try:
        user = user_id
        if user:
            return jsonify(user)
        else:
            return jsonify({'error': 'User not found'}), 404
    except Exception as e:
        return handle_error(e)

def get_md5(value):
    md5 = hashlib.md5()  # 创建一个md5对象
    md5.update(value.encode('utf-8'))  # 使用utf-8编码更新待计算的字符串
    return md5.hexdigest()  # 返回十六进制的MD5值