from datetime import datetime
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy import Enum
import enum

db = SQLAlchemy()


class User(db.Model):
    """User model for authenticated users via Authelia OIDC"""
    __tablename__ = 'users'

    id = db.Column(db.Integer, primary_key=True)
    authelia_sub = db.Column(db.String(255), unique=True, nullable=False)  # OIDC 'sub' claim
    email = db.Column(db.String(255), nullable=True)  # Email may not always be provided by OIDC
    name = db.Column(db.String(255), nullable=True)
    preferred_username = db.Column(db.String(100), nullable=True)
    groups = db.Column(db.JSON, default=list, nullable=False)  # Array of group names from OIDC
    is_active = db.Column(db.Boolean, default=True)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    last_login = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    @property
    def is_admin(self):
        """Check if user is in trivia-admins group"""
        return 'trivia-admins' in (self.groups or [])

    def to_dict(self):
        """Convert user to dictionary"""
        return {
            'id': self.id,
            'email': self.email,
            'name': self.name,
            'username': self.preferred_username,
            'groups': self.groups,
            'is_admin': self.is_admin,
            'last_login': self.last_login.isoformat() if self.last_login else None
        }


class QuestionType(enum.Enum):
    """Enum for question types"""
    TEXT = "text"
    IMAGE = "image"
    YOUTUBE_AUDIO = "youtube_audio"


class Category(db.Model):
    """Category model for organizing questions"""
    __tablename__ = 'categories'

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False, unique=True)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    def to_dict(self):
        """Convert category to dictionary"""
        return {
            'id': self.id,
            'name': self.name,
            'created_at': self.created_at.isoformat() if self.created_at else None
        }


class Question(db.Model):
    """Question model for trivia questions"""
    __tablename__ = 'questions'

    id = db.Column(db.Integer, primary_key=True)
    type = db.Column(Enum(QuestionType), nullable=False, default=QuestionType.TEXT)
    question_content = db.Column(db.Text, nullable=False)
    answer = db.Column(db.Text, nullable=False)
    image_path = db.Column(db.String(255), nullable=True)  # For image questions
    category = db.Column(db.String(100), nullable=True)  # Question category (e.g., "History", "Science")

    # YouTube audio fields
    youtube_url = db.Column(db.String(500), nullable=True)  # YouTube video URL
    audio_path = db.Column(db.String(255), nullable=True)  # Path to trimmed audio file
    start_time = db.Column(db.Integer, nullable=True)  # Start time in seconds
    end_time = db.Column(db.Integer, nullable=True)  # End time in seconds

    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    # Relationships
    game_questions = db.relationship('GameQuestion', back_populates='question', cascade='all, delete-orphan')

    def to_dict(self, include_answer=False):
        """Convert question to dictionary"""
        data = {
            'id': self.id,
            'type': self.type.value,
            'question_content': self.question_content,
            'image_path': self.image_path,
            'youtube_url': self.youtube_url,
            'audio_path': self.audio_path,
            'start_time': self.start_time,
            'end_time': self.end_time,
            'category': self.category,
            'created_at': self.created_at.isoformat() if self.created_at else None
        }
        if include_answer:
            data['answer'] = self.answer
        return data


class Game(db.Model):
    """Game model representing a trivia game session"""
    __tablename__ = 'games'

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(200), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    is_active = db.Column(db.Boolean, default=False)  # Only one game active at a time
    current_question_index = db.Column(db.Integer, default=0)  # Track current question
    is_template = db.Column(db.Boolean, default=False)  # Mark as reusable template

    # Relationships
    teams = db.relationship('Team', back_populates='game', cascade='all, delete-orphan')
    game_questions = db.relationship('GameQuestion', back_populates='game',
                                     cascade='all, delete-orphan',
                                     order_by='GameQuestion.order')
    scores = db.relationship('Score', back_populates='game', cascade='all, delete-orphan')

    @classmethod
    def get_active(cls):
        """Get the currently active game"""
        return cls.query.filter_by(is_active=True).first()

    def get_current_question(self):
        """Get the current question in the game"""
        if 0 <= self.current_question_index < len(self.game_questions):
            return self.game_questions[self.current_question_index].question
        return None

    def to_dict(self, include_questions=False, include_teams=False):
        """Convert game to dictionary"""
        data = {
            'id': self.id,
            'name': self.name,
            'created_at': self.created_at.isoformat() if self.created_at else None,
            'is_active': self.is_active,
            'current_question_index': self.current_question_index,
            'total_questions': len(self.game_questions),
            'is_template': self.is_template
        }

        if include_questions:
            data['questions'] = [gq.to_dict() for gq in self.game_questions]

        if include_teams:
            data['teams'] = [team.to_dict() for team in self.teams]

        return data


class GameQuestion(db.Model):
    """Junction table linking games to questions with ordering"""
    __tablename__ = 'game_questions'

    id = db.Column(db.Integer, primary_key=True)
    game_id = db.Column(db.Integer, db.ForeignKey('games.id'), nullable=False)
    question_id = db.Column(db.Integer, db.ForeignKey('questions.id'), nullable=False)
    order = db.Column(db.Integer, nullable=False)  # Question order in game

    # Relationships
    game = db.relationship('Game', back_populates='game_questions')
    question = db.relationship('Question', back_populates='game_questions')

    __table_args__ = (
        db.UniqueConstraint('game_id', 'order', name='unique_game_question_order'),
    )

    def to_dict(self):
        """Convert to dictionary"""
        return {
            'order': self.order,
            'question': self.question.to_dict()
        }


class Team(db.Model):
    """Team model representing a trivia team"""
    __tablename__ = 'teams'

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False)
    game_id = db.Column(db.Integer, db.ForeignKey('games.id'), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    phone_a_friend_count = db.Column(db.Integer, default=5)  # Number of phone-a-friend lifelines

    # Relationships
    game = db.relationship('Game', back_populates='teams')
    scores = db.relationship('Score', back_populates='team', cascade='all, delete-orphan')

    @property
    def total_score(self):
        """Calculate total score for the team"""
        return sum(score.points for score in self.scores)

    def to_dict(self):
        """Convert team to dictionary"""
        return {
            'id': self.id,
            'name': self.name,
            'game_id': self.game_id,
            'total_score': self.total_score,
            'phone_a_friend_count': self.phone_a_friend_count,
            'created_at': self.created_at.isoformat() if self.created_at else None
        }


class Score(db.Model):
    """Score model tracking points per team per question"""
    __tablename__ = 'scores'

    id = db.Column(db.Integer, primary_key=True)
    team_id = db.Column(db.Integer, db.ForeignKey('teams.id'), nullable=False)
    game_id = db.Column(db.Integer, db.ForeignKey('games.id'), nullable=False)
    question_index = db.Column(db.Integer, nullable=False)  # Which question this score is for
    points = db.Column(db.Integer, default=0)
    awarded_at = db.Column(db.DateTime, default=datetime.utcnow)

    # Relationships
    team = db.relationship('Team', back_populates='scores')
    game = db.relationship('Game', back_populates='scores')

    __table_args__ = (
        db.UniqueConstraint('team_id', 'question_index', name='unique_team_question_score'),
    )

    def to_dict(self):
        """Convert score to dictionary"""
        return {
            'id': self.id,
            'team_id': self.team_id,
            'game_id': self.game_id,
            'question_index': self.question_index,
            'points': self.points,
            'awarded_at': self.awarded_at.isoformat() if self.awarded_at else None
        }


class DownloadJobStatus(enum.Enum):
    """Enum for download job statuses"""
    PENDING = "pending"
    PROCESSING = "processing"
    COMPLETED = "completed"
    FAILED = "failed"


class DownloadJob(db.Model):
    """Track YouTube audio download jobs"""
    __tablename__ = 'download_jobs'

    id = db.Column(db.Integer, primary_key=True)
    question_id = db.Column(db.Integer, db.ForeignKey('questions.id'), nullable=False)
    celery_task_id = db.Column(db.String(255), nullable=False, unique=True)
    status = db.Column(Enum(DownloadJobStatus), default=DownloadJobStatus.PENDING, nullable=False)
    progress = db.Column(db.Integer, default=0)  # 0-100
    error_message = db.Column(db.Text, nullable=True)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    completed_at = db.Column(db.DateTime, nullable=True)

    # Relationships
    question = db.relationship('Question', backref='download_job')

    def to_dict(self):
        """Convert download job to dictionary"""
        return {
            'id': self.id,
            'question_id': self.question_id,
            'task_id': self.celery_task_id,
            'status': self.status.value,
            'progress': self.progress,
            'error_message': self.error_message,
            'created_at': self.created_at.isoformat() if self.created_at else None,
            'completed_at': self.completed_at.isoformat() if self.completed_at else None
        }