from werkzeug.security import generate_password_hash, check_password_hash
from app import app, db, login
from sqlalchemy.sql import func
from secrets import token_hex
from flask_login import UserMixin

game_player = db.Table('game_player',
        db.Column('game_id', db.Integer, db.ForeignKey('game.id'), nullable=False),
        db.Column('player_id', db.Integer, db.ForeignKey('player.id'), nullable=False),
        db.PrimaryKeyConstraint('game_id', 'player_id'),
        db.Column('role', db.String(16))
        )

player_found_objective = db.Table('player_found_objective',
        db.Column('objective_id', db.Integer, db.ForeignKey('objective.id'), nullable=False, server_default='-1'),
        db.Column('player_id', db.Integer, db.ForeignKey('player.id'), nullable=False, server_default='-1'),
        db.PrimaryKeyConstraint('objective_id', 'player_id'),
        db.Column('timestamp', db.DateTime, server_default=func.now(), nullable=False)
        )

player_caught_player = db.Table('player_caught_player',
        db.Column('catching_player_id', db.Integer, db.ForeignKey('player.id')),
        db.Column('caught_player_id', db.Integer, db.ForeignKey('player.id')),
        db.Column('photo_reference', db.String(128), unique=True, nullable=False),
        db.Column('timestamp', db.DateTime, server_default=func.now(), nullable=False)
        )

notification_player = db.Table('notification_player',
        db.Column('notification_id', db.Integer, db.ForeignKey('notification.id')),
        db.Column('player_id', db.Integer, db.ForeignKey('player.id')),
        db.PrimaryKeyConstraint('notification_id', 'player_id'),
        db.Column('been_shown', db.Boolean, server_default='True', nullable=False)
        )

class Game(db.Model):
    __tablename__ = 'game'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), index=True, unique=True, nullable=False)
    state = db.Column(db.Integer, server_default='1')
    start_time = db.Column(db.DateTime)
    end_time = db.Column(db.DateTime)
    players = db.relationship(
        'Player',
        secondary=game_player,
        back_populates='games')
    objectives = db.relationship(
        'Objective',
        lazy='select',
        backref=db.backref('game', lazy='joined'))
    notifications = db.relationship(
        'Notification',
        lazy='select',
        backref=db.backref('game', lazy='joined'))

class Player(UserMixin, db.Model):
    __tablename__ = 'player'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), unique=True, nullable=False)
    auth_hash = db.Column(db.String(32), unique=True, nullable=True)
    password_hash = db.Column(db.String(128))
    games = db.relationship(
        'Game',
        secondary=game_player,
        back_populates='players')
    objectives_found = db.relationship(
        'Objective',
        secondary=player_found_objective,
        back_populates='players')
    caught_players = db.relationship(
        'Player',
        secondary=player_caught_player,
        primaryjoin=(player_caught_player.c.catching_player_id == id),
        secondaryjoin=(player_caught_player.c.caught_player_id == id),
        backref=db.backref('caught_by', lazy='dynamic'), lazy='dynamic')
    locations = db.relationship(
        'Location',
        lazy='select',
        backref=db.backref('player', lazy='joined'))
    notifications = db.relationship(
        'Notification',
        secondary=notification_player,
        back_populates='recipients')

    def set_password(self, password):
        self.password_hash = generate_password_hash(password)

    def set_auth_hash(self):
        self.auth_hash = token_hex(16)

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

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

class Objective(db.Model):
    __tablename__ = 'objective'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), nullable=False)
    game_id = db.Column(db.Integer, db.ForeignKey('game.id'), nullable=False)
    hash = db.Column(db.String(128), unique=True, nullable=False)
    longitude = db.Column(db.Numeric(precision=15, scale=10, asdecimal=False, decimal_return_scale=None)) # maybe check asdecimal and decimal_return_scale later?
    latitude = db.Column(db.Numeric(precision=15, scale=10, asdecimal=False, decimal_return_scale=None))
    players = db.relationship(
        'Player',
        secondary=player_found_objective,
        back_populates='objectives_found')

class Location(db.Model):
    __tablename__ = 'location'
    id = db.Column(db.Integer, primary_key=True)
    player_id = db.Column(db.Integer, db.ForeignKey('player.id'), nullable=False)
    longitude = db.Column(db.Numeric(precision=15, scale=10, asdecimal=False, decimal_return_scale=None),nullable=False) # maybe check asdecimal and decimal_return_scale later?
    latitude = db.Column(db.Numeric(precision=15, scale=10, asdecimal=False, decimal_return_scale=None),nullable=False)
    timestamp = db.Column(db.DateTime, server_default=func.now(), nullable=False)

class Notification(db.Model):
    __tablename__ = 'notification'
    id = db.Column(db.Integer, primary_key=True)
    game_id = db.Column(db.Integer, db.ForeignKey('game.id'), nullable=False)
    message = db.Column(db.Text, nullable=False)
    type = db.Column(db.String(64), nullable=False, default='General')
    timestamp = db.Column(db.DateTime, server_default=func.now(), nullable=False)
    recipients = db.relationship(
        'Player',
        secondary=notification_player,
        back_populates='notifications')

#start_time = db.Column(db.DateTime, server_default=func.now())