"""Base User model — shared fields and polymorphic configuration."""
from app.extensions import db
from flask_login import UserMixin
from datetime import datetime


class User(UserMixin, db.Model):
    """Base user model — shared fields for every role.

    Do not instantiate this class directly; use Admin, Manager, Coach, Player,
    or Scout so that `polymorphic_identity` is set correctly.
    """
    __tablename__ = 'users'

    # --- columns -----------------------------------------------------------
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    password_hash = db.Column(db.String(128), nullable=False)
    role = db.Column(db.String(20), nullable=False, default='player')  # polymorphic discriminator
    full_name = db.Column(db.String(100), nullable=False)
    email = db.Column(db.String(120), unique=True, nullable=False)
    phone = db.Column(db.String(20), nullable=True)
    is_active_account = db.Column(db.Boolean, default=True)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    failed_login_attempts = db.Column(db.Integer, default=0)
    locked_until = db.Column(db.DateTime, nullable=True)

    # E-Sports fields
    games = db.Column(db.Text, nullable=True)            # comma-separated (only meaningful for Player)
    discord_username = db.Column(db.String(128), nullable=True)
    discord_user_id = db.Column(db.String(64), nullable=True)
    league_os_profile = db.Column(db.String(256), nullable=True)

    # --- polymorphic configuration -----------------------------------------
    __mapper_args__ = {
        'polymorphic_identity': 'user',
        'polymorphic_on': role,
    }

    # --- relationships (defined once on the base) --------------------------
    evaluations_given = db.relationship(
        'Evaluation', foreign_keys='Evaluation.evaluator_id',
        backref='evaluator', lazy='dynamic')
    evaluations_received = db.relationship(
        'Evaluation', foreign_keys='Evaluation.player_id',
        backref='player', lazy='dynamic')
    tryout_registrations = db.relationship(
        'TryoutRegistration', backref='player', lazy='dynamic')
    team_assignments = db.relationship(
        'TeamMember', foreign_keys='TeamMember.player_id',
        backref='player_ref', lazy='dynamic')

    # --- shared helper methods ---------------------------------------------
    def get_games_list(self):
        """Return the user's games as a list."""
        if self.games:
            return [g.strip() for g in self.games.split(',') if g.strip()]
        return []

    def get_gamertags(self):
        """Return gamertags as a dict keyed by game."""
        return {gt.game: {'gamertag': gt.gamertag, 'platform': gt.platform}
                for gt in self.gamertags}

    def get_org_teams(self):
        """Return all OrgTeams this player belongs to."""
        return [tp.org_team for tp in self.team_placements]

    # --- stubs (overridden in subclasses) ----------------------------------
    def can_evaluate(self):
        return False

    def can_manage_users(self):
        return False

    def can_manage_teams(self):
        return False

    def can_manage_tryouts(self):
        return False

    def can_schedule_matches(self):
        return False

    def can_manage_this_tryout(self, tryout):
        return False

    def can_manage_this_org_team(self, org_team):
        return False

    def get_visible_tryouts(self):
        return []