import web

from web import form
urls=("/login","login",
      "/reg","registr",
      "/logout","logout",
      "/","userinfo",
      "/edit","edit_info"


      )

login_form=form.Form(
                        form.Textbox("email",description="Email"),
                        form.Password("password", description="Password"),
                        form.Button("Sign in",type="submit",description="Sign in")
                        )

valid_name=form.regexp(".+","Type your name")
valid_pass=form.regexp(".{4,12}","password must be from 4 to 12 characters")
valid_email=form.regexp("^([a-z0-9_-]+\.)*[a-z0-9_-]+@[a-z0-9_-]+(\.[a-z0-9_-]+)*\.[a-z]{2,4}$","Incorrect email")
reg_form=form.Form(form.Textbox("name",valid_name,description="Name"),
                   form.Textbox("email",valid_email,description="Email"),
                   form.Password("passw",valid_pass,description="Password"),
                   form.Password("passw2",description="Repeat Password"),
                   form.Button("Proceed",type="submit",description="Sign up"),
                   validators = [form.Validator("Password doesn't match", lambda x: x.passw == x.passw2)]
                   )

db=web.database(dbn="sqlite",db="webpydb")
render = web.template.render('templates')

def login_required(func):
    def decor(*args,**kargs):
        if session.logged:
            return func(*args,**kargs)
        else:
            web.seeother("/login")
    return decor


class login:

    def GET(self):
        f=login_form()
        return render.login(f)

    def POST(self):
        f=login_form()
        email=web.input().email
        passw=web.input().password
        users=db.select('Users',limit=1,where='Email=$email and Pass=$passw',vars=locals())
        error_msg="Wrong email or password"
        err=render.error(error_msg)
        try:
            user=users[0]
            session.name = user.Name
            session.email=user.Email
            session.logged = True
        except IndexError:
            return render.login(f,unicode(err))
        if session.logged==True:
            web.seeother("/")

class registr:

    def GET(self):
        f=reg_form()
        return render.reg(f)

    def POST(self):
        f=reg_form()
        if f.validates():
            name=f.d.name
            email=f.d.email
            passw=f.d.passw
            exist=False
            for x in db.select("Users"):
                if x.Email==email:
                    exist=True
            if exist:
                err=render.error("User with such email already exist")
                return render.reg(f,unicode(err))
            else:
                db.insert("Users",Name=name,Email=email,Pass=passw)
                web.seeother("/")
        else:
            return render.reg(f)


class logout:
    @login_required
    def GET(self):
        session.kill()
        web.seeother("/login")


class userinfo:
    @login_required
    def GET(self):
        greeting="Hello "+session.name
        mail=session.email

        t=db.select("Users",limit=1,what="Name,Pass",where="Email=$mail",vars=locals()).list()
        name=t[0].Name
        pasw=t[0].Pass
        print name,pasw
        return render.info(greeting,name,mail,pasw)




class edit_info:
    @login_required
    def GET(self):
        f=reg_form()
        return render.reg(f)

    def POST(self):
        f=reg_form()
        if f.validates():
            name=f.d.name
            email=f.d.email
            passw=f.d.passw
            old=session.email
            db.update("users",where="Email=$old",Name=name,Email=email,Pass=passw,vars=locals())
            session.name=name
            session.email=email
            web.seeother("/")
        else:
            return render.reg(f)

app=web.application(urls,globals())
store=web.session.DiskStore('sessions')
if web.config.get('_session') is None:
    session = web.session.Session(app,store , initializer={'logged':False,'name':"some",'email':"aaa@aaa.aaa"})
    web.config._session = session
else:
    session=web.config._session
application=app.wsgifunc()