from werkzeug.security import check_password_hash
from flask_appbuilder.security.views import AuthDBView, AuthRemoteUserView
from flask_appbuilder.security.views import expose
from flask_appbuilder.const import LOGMSG_WAR_SEC_LOGIN_FAILED
from flask import send_file, jsonify
import os



# 推送给管理员消息的函数
def push_admin(message):
    pass


# 推送消息给用户的函数
def push_message(receivers, message, link=None):
    pass


import logging
from flask import flash, g, redirect, request, session
from flask_login import login_user, logout_user
from flask_appbuilder.security.forms import LoginForm_db
import pysnooper

# 自定义远程用户视图
class MyCustomRemoteUserView(AuthRemoteUserView):
    pass


# 账号密码登录方式的登录界面

class Myauthdbview(AuthDBView):
    login_template = "appbuilder/general/security/login_db.html"

    @expose("/login/api/", methods=["GET", "POST"])
    # @pysnooper.snoop(watch_explode=('form',))
    def login_api(self):
        request_data = request.args.to_dict()
        if request.get_json(silent=True):
            request_data.update(request.get_json(silent=True))
        token = request_data.get('token', '')
        uuid = request_data.get('uuid', '')
        if token:
            user = self.appbuilder.sm.find_user(token)
            if user:
                login_user(user, remember=True)
                if uuid:
                    user.org = uuid
                    from myapp import db, app
                    db.session.commit()

                return jsonify({
                    "status": 0,
                    "message": '登录成功',
                    "result": {}
                })
            else:
                return jsonify({
                    "status": 1,
                    "message": '未发现用户',
                    "result": {}
                })

    @expose("/login/", methods=["GET", "POST"])
    def login(self):
        request_data = request.args.to_dict()
        comed_url = request_data.get('login_url', '')

        if 'rtx' in request_data:
            if request_data.get('rtx'):
                username = request_data.get('rtx')
                user = self.appbuilder.sm.find_user(username)
                if user:
                    login_user(user, remember=True)
                    if comed_url:
                        return redirect(comed_url)
                    return redirect(self.appbuilder.get_url_for_index)

        if g.user is not None and g.user.is_authenticated:
            return redirect(self.appbuilder.get_url_for_index)

        form = LoginForm_db()
        # 如果提交请求。就是认证
        if form.validate_on_submit():
            username = form.username.data
            import re
            if not re.match('^[a-z][a-z0-9\-]*[a-z0-9]$',username):
                flash('用户名只能由小写字母、数字、-组成',"warning")
                return redirect(self.appbuilder.get_url_for_login)

            password = form.password.data

            user = self.appbuilder.sm.find_user(username=username)
            if user is None:
                user = self.appbuilder.sm.find_user(email=username)
            if user is None or (not user.is_active):
                logging.info(LOGMSG_WAR_SEC_LOGIN_FAILED.format(username))
                user = None
            elif check_password_hash(user.password, password):
                self.appbuilder.sm.update_user_auth_stat(user, True)
            elif user.password == password:
                self.appbuilder.sm.update_user_auth_stat(user, True)
            else:
                self.appbuilder.sm.update_user_auth_stat(user, False)
                logging.info(LOGMSG_WAR_SEC_LOGIN_FAILED.format(username))
                user = None

            if not user:
                user = self.appbuilder.sm.find_user(form.username.data)
                if user:
                    # 有用户，但是密码不对
                    flash('发现用户%s已存在，但输入密码不对' % form.username.data, "warning")

                    return redirect(self.appbuilder.get_url_for_login)
                else:
                    # 没有用户的时候自动注册用户
                    user = self.appbuilder.sm.auth_user_remote_org_user(username=form.username.data, org_name='',
                                                                        password=form.password.data)
                    flash('发现用户%s不存在，已自动注册' % form.username.data, "warning")
            login_user(user, remember=True)
            # 添加到public项目组
            from myapp.security import MyUserRemoteUserModelView_Base
            user_view = MyUserRemoteUserModelView_Base()
            user_view.post_add(user)
            return redirect(comed_url if comed_url else self.appbuilder.get_url_for_index)
        return self.render_template(
            self.login_template, title=self.title, form=form, appbuilder=self.appbuilder
        )

    @expose('/logout')
    def logout(self):
        login_url = request.host_url.strip('/') + '/login/'
        session.pop('user', None)
        g.user = None
        logout_user()
        return redirect(login_url)