from sqlalchemy import create_engine, Column, Integer, String, Float, Boolean, DateTime, ForeignKey, JSON, Text
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker, relationship
from datetime import datetime
import json
from pathlib import Path

DATABASE_URL = "sqlite:///./cs2_simulator.db"
engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()

class User(Base):
    __tablename__ = "users"
    
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, nullable=False)
    hashed_password = Column(String(200), nullable=False)
    balance = Column(Float, default=0.0)
    is_admin = Column(Boolean, default=False)
    is_banned = Column(Boolean, default=False)
    created_at = Column(DateTime, default=datetime.utcnow)
    last_login = Column(DateTime, nullable=True)
    
    inventory_items = relationship("InventoryItem", back_populates="user", cascade="all, delete-orphan")
    case_openings = relationship("CaseOpening", back_populates="user", cascade="all, delete-orphan")
    contracts = relationship("Contract", back_populates="user", cascade="all, delete-orphan")
    rpu_settings = relationship("UserRPU", back_populates="user", uselist=False, cascade="all, delete-orphan")
    upgrades = relationship("Upgrade", back_populates="user", cascade="all, delete-orphan")
    upgrade_rpu = relationship("UpgradeRPU", back_populates="user", uselist=False, cascade="all, delete-orphan")

class UpgradeRPU(Base):
    __tablename__ = "upgrade_rpu"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, unique=True)
    
    # Множитель шанса апгрейда (1.0 = стандартный)
    upgrade_multiplier = Column(Float, default=1.0)
    
    # Автоматическая подкрутка
    auto_adjust = Column(Boolean, default=False)
    
    # Статистика
    total_attempts = Column(Integer, default=0)
    total_success = Column(Integer, default=0)
    total_spent_value = Column(Float, default=0.0)  # Стоимость потерянных предметов
    
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
    
    user = relationship("User", back_populates="upgrade_rpu")


class Upgrade(Base):
    __tablename__ = "upgrades"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    input_item_id = Column(Integer, nullable=False)
    input_item_name = Column(String(200))
    input_item_image_url = Column(String(500), default="")
    target_item_id = Column(Integer, nullable=False)
    target_item_name = Column(String(200))
    target_item_image_url = Column(String(500), default="")
    success = Column(Boolean, default=False)
    probability = Column(Float)  # Базовый шанс
    rpu_adjusted_probability = Column(Float)  # Шанс с учетом РПУ
    created_at = Column(DateTime, default=datetime.utcnow)
    
    user = relationship("User", back_populates="upgrades")

class UserRPU(Base):
    __tablename__ = "user_rpu"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, unique=True)
    
    # Множители шансов для каждой редкости (1.0 = стандартный шанс)
    consumer_multiplier = Column(Float, default=1.0)
    industrial_multiplier = Column(Float, default=1.0)
    mil_spec_multiplier = Column(Float, default=1.0)
    restricted_multiplier = Column(Float, default=1.0)
    classified_multiplier = Column(Float, default=1.0)
    covert_multiplier = Column(Float, default=1.0)
    rare_special_multiplier = Column(Float, default=1.0)
    
    # Общий множитель удачи
    luck_multiplier = Column(Float, default=1.0)
    
    # Автоматическая подкрутка
    auto_adjust = Column(Boolean, default=False)
    
    # Статистика для авто-подкрутки
    total_spent = Column(Float, default=0.0)  # Всего потрачено
    total_opened = Column(Integer, default=0)  # Всего открыто кейсов
    last_adjustment = Column(DateTime, nullable=True)
    
    # Мета-данные
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
    
    user = relationship("User", back_populates="rpu_settings")


class InventoryItem(Base):
    __tablename__ = "inventory_items"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    item_id = Column(Integer, nullable=False)  # ID из ALL_ITEMS
    market_hash_name = Column(String(200), nullable=False)
    rarity = Column(String(50))
    wear = Column(String(50))
    float_value = Column(Float, default=0.0)
    type = Column(String(20), default="Normal")
    obtained_from = Column(String(100))  # "case: название" или "contract"
    obtained_at = Column(DateTime, default=datetime.utcnow)
    is_equipped = Column(Boolean, default=False)
    
    user = relationship("User", back_populates="inventory_items")

class CaseOpening(Base):
    __tablename__ = "case_openings"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    case_name = Column(String(100), nullable=False)
    item_id = Column(Integer, nullable=False)
    item_name = Column(String(200), nullable=False)
    rarity = Column(String(50))
    float_value = Column(Float)
    opened_at = Column(DateTime, default=datetime.utcnow)
    
    user = relationship("User", back_populates="case_openings")

class Contract(Base):
    __tablename__ = "contracts"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    input_item_ids = Column(Text, nullable=False)  # JSON список ID из инвентаря
    output_item_id = Column(Integer, nullable=False)
    output_item_name = Column(String(200))
    output_float = Column(Float)
    probability = Column(Float)
    created_at = Column(DateTime, default=datetime.utcnow)
    
    user = relationship("User", back_populates="contracts")


class Achievement(Base):
    __tablename__ = "achievements"
    
    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(100), unique=True, nullable=False)
    title = Column(String(200), nullable=False)
    description = Column(String(500))
    icon = Column(String(50), default="🏆")
    category = Column(String(50), default="general")  # cases, contracts, upgrade, social, general
    requirement_type = Column(String(50), nullable=False)  # open_cases, contracts, upgrade_wins, total_spent, valuable_item, etc.
    requirement_value = Column(Integer, nullable=False)  # how many
    reward_amount = Column(Float, default=0.0)  # bonus rubles
    sort_order = Column(Integer, default=0)
    hidden = Column(Boolean, default=False)  # секретные достижения
    
    user_achievements = relationship("UserAchievement", back_populates="achievement")


class UserAchievement(Base):
    __tablename__ = "user_achievements"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    achievement_id = Column(Integer, ForeignKey("achievements.id"), nullable=False)
    progress = Column(Integer, default=0)  # текущий прогресс
    unlocked_at = Column(DateTime, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)
    
    user = relationship("User", backref="user_achievements")
    achievement = relationship("Achievement", back_populates="user_achievements")


class ActivityFeed(Base):
    __tablename__ = "activity_feed"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    username = Column(String(50), nullable=False)
    activity_type = Column(String(50), nullable=False)  # case_open, contract, upgrade, achievement, trade, crash
    message = Column(String(500), nullable=False)
    data_json = Column(Text, default="{}")  # дополнительные данные (item_name, price, etc.)
    created_at = Column(DateTime, default=datetime.utcnow)
    
    user = relationship("User", backref="activities")

Base.metadata.create_all(bind=engine)

# Миграция: добавляем колонку hidden если её нет
try:
    from sqlalchemy import inspect
    inspector = inspect(engine)
    cols = [c["name"] for c in inspector.get_columns("achievements")]
    if "hidden" not in cols:
        from sqlalchemy import text
        with engine.connect() as conn:
            conn.execute(text("ALTER TABLE achievements ADD COLUMN hidden BOOLEAN DEFAULT 0"))
            conn.commit()
except Exception as e:
    print(f"[DB] Миграция hidden: {e}")

def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()