import datetime
from sqlalchemy import Column, Integer, String, Text, Boolean, DateTime
from app.database import Base

class Question(Base):
    __tablename__ = "questions"

    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
    category = Column(String(50), default="harry_potter", index=True)
    difficulty = Column(String(20), default="medium", index=True)  # easy, medium, hard
    question_type = Column(String(20), default="text")  # 'text' or 'multiple_choice'

    # German content (default)
    question = Column(Text, nullable=False)
    canonical_answer = Column(String(255), nullable=False)
    options = Column(Text, nullable=True)  # JSON list of options for multiple choice
    hint = Column(Text, nullable=True)

    # English content
    question_en = Column(Text, nullable=True)
    answer_en = Column(String(255), nullable=True)
    options_en = Column(Text, nullable=True)  # JSON list of options in English
    hint_en = Column(Text, nullable=True)

    accepted_answers = Column(Text, nullable=True)  # JSON or comma-delimited
    status = Column(String(30), default="active", index=True)  # active, needs_review, rejected, archived
    submitted_by = Column(String(100), nullable=True)
    sort_order = Column(Integer, default=0)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    reviewed_at = Column(DateTime, nullable=True)
    reviewed_by = Column(String(50), nullable=True)

class QuizSession(Base):
    __tablename__ = "quiz_sessions"

    id = Column(String(36), primary_key=True, index=True)
    score = Column(Integer, default=0)
    current_question_idx = Column(Integer, default=0)
    question_ids = Column(Text, nullable=False)  # JSON array string: "[1, 2, 3...]"
    attempts_current = Column(Integer, default=0)
    is_finished = Column(Boolean, default=False)
    lang = Column(String(10), default="de")  # 'de' or 'en'
    difficulty = Column(String(20), default="all")  # 'all', 'easy', 'medium', 'hard'
    duration_seconds = Column(Integer, nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)
    finished_at = Column(DateTime, nullable=True)

class LeaderboardEntry(Base):
    __tablename__ = "leaderboard_entries"

    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
    nickname = Column(String(50), nullable=False, index=True)
    score = Column(Integer, nullable=False, index=True)
    total_questions = Column(Integer, default=10)
    time_seconds = Column(Integer, nullable=False, index=True)
    difficulty = Column(String(20), default="all", index=True)
    lang = Column(String(10), default="de")
    session_id = Column(String(36), nullable=True)
    created_at = Column(DateTime, default=datetime.datetime.utcnow, index=True)

class AdminUser(Base):
    __tablename__ = "admin_users"

    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
    username = Column(String(50), unique=True, index=True, nullable=False)
    password_hash = Column(String(255), nullable=False)
    created_at = Column(DateTime, default=datetime.datetime.utcnow)