from datetime import date, datetime
from app import db, login
from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash
from app.models.contents import Content


class User(UserMixin, db.Model):
    __tablename__ = 'user'
    id = db.Column(db.Integer, primary_key=True)
    type = db.Column(db.String(20))
    __mapper_args__ = {
        'polymorphic_identity': __tablename__,
        'polymorphic_on': type
    }
    contents = db.relationship('Content', back_populates="author") # TODO: add good relation

    def __repr__(self):
        return f'<User #{self.id}>'

class Member(User, db.Model):
    __tablename__ = 'member'
    id = db.Column(db.Integer, db.ForeignKey('user.id'), primary_key=True)
    __mapper_args__ = { 'polymorphic_identity': __tablename__ }
    # Standalone properties
    username = db.Column(db.Unicode(64), index=True, unique=True)
    email = db.Column(db.String(120), index=True, unique=True)
    password_hash = db.Column(db.String(255))
    xp_points = db.Column(db.Integer)
    innovation_points = db.Column(db.Integer)
    biography = db.Column(db.Text(convert_unicode=True))
    signature = db.Column(db.Text(convert_unicode=True))
    birthday = db.Column(db.Date)
    register_date = db.Column(db.Date, default=date.today)
    # Relations
    #trophies = db.relationship('Trophy') # TODO: add good relation
    #tests = db.relationship('Test') # TODO: add good relation
    # Privacy assets
    receive_newsletter = db.Column(db.Boolean, default=False)


    def __init__(self, username, email, password):
        self.username = username
        self.email = email
        self.set_password(password)

    def update(self, username=None, email=None, password=None,
        biography=None, signature=None, birthday=None,
        receive_newsletter=None):
        # TODO: verify good type of those args, think about the password mgt
        if username:
            self.username = username
        if email:
            self.email = email
        if password:
            self.set_password(password)
        if biography:
            self.biography = biography
        if signature:
            self.signature = signature
        if birthday:
            self.birthday = birthday
        if receive_newsletter:
            self.receive_newsletter = receive_newsletter

    def get_public_data(self, username=False, xp_points=False,
        innovation_points=False, biography=None, signature=None,
        birthday=None, register_date=False):
        out = {}
        if username:
            out['username'] = username
        if xp_points:
            out['xp_points'] = xp_points
        if innovation_points:
            out['innovation_points'] = innovation_points
        if biography:
            out['biography'] = biography
        if signature:
            out['signature'] = signature
        if birthday:
            out['birthday'] = birthday
        if register_date:
            out['register_date'] = register_date

    def add_xp(self, n):
        self.xp_points += n

    def add_innovation(self, n):
        self.innovation_points += n

    def set_password(self, password):
        self.password_hash = generate_password_hash(password,
            method='pbkdf2:sha512', salt_length=10)

    def check_password(self, password):
        return check_password_hash(self.password_hash, password)

    def __repr__(self):
        return f'<Member {self.username}>'

@login.user_loader
def load_user(id):
    return User.query.get(int(id))

class Guest(User, db.Model):
    __tablename__ = 'guest'
    id = db.Column(db.Integer, db.ForeignKey('user.id'), primary_key=True)
    __mapper_args__ = { 'polymorphic_identity': __tablename__ }
    # Standalone propeties
    username = db.Column(db.Unicode(64), index=True)
    ip = db.column(db.String(47)) # Max IPv6 adress length
    last_post = db.Column(db.DateTime, default=datetime.now)


    def __repr__(self):
        return f'<Guest {self.username} ({self.ip})>'

# Can be implemented if needed
# class Organization(User, db.Model):
#     pass