"""Marketplace Product model for multi-marketplace product integration.

This model stores canonical product data from various marketplaces (Letzshop,
Amazon, eBay, CodesWholesale, etc.) in a universal format. It supports:
- Physical and digital products
- Multi-language translations (via MarketplaceProductTranslation)
- Flexible attributes for marketplace-specific data
- Google Shopping fields for Letzshop compatibility
"""

from enum import Enum

from sqlalchemy import (
    Boolean,
    Column,
    Float,
    Index,
    Integer,
    String,
)
from sqlalchemy.dialects.sqlite import JSON
from sqlalchemy.orm import relationship

from app.core.database import Base
from models.database.base import TimestampMixin


class ProductType(str, Enum):
    """Product type classification."""

    PHYSICAL = "physical"
    DIGITAL = "digital"
    SERVICE = "service"
    SUBSCRIPTION = "subscription"


class DigitalDeliveryMethod(str, Enum):
    """Digital product delivery methods."""

    DOWNLOAD = "download"
    EMAIL = "email"
    IN_APP = "in_app"
    STREAMING = "streaming"
    LICENSE_KEY = "license_key"


class MarketplaceProduct(Base, TimestampMixin):
    """Canonical product data from marketplace sources.

    This table stores normalized product information from all marketplace sources.
    Localized content (title, description) is stored in MarketplaceProductTranslation.
    """

    __tablename__ = "marketplace_products"

    id = Column(Integer, primary_key=True, index=True)

    # === UNIVERSAL IDENTIFIERS ===
    marketplace_product_id = Column(String, unique=True, index=True, nullable=False)
    gtin = Column(String, index=True)  # EAN/UPC - primary cross-marketplace matching
    mpn = Column(String, index=True)  # Manufacturer Part Number
    sku = Column(String, index=True)  # Internal SKU if assigned

    # === SOURCE TRACKING ===
    marketplace = Column(
        String, index=True, nullable=True, default="letzshop"
    )  # 'letzshop', 'amazon', 'ebay', 'codeswholesale'
    source_url = Column(String)  # Original product URL
    vendor_name = Column(String, index=True)  # Seller/vendor in marketplace

    # === PRODUCT TYPE ===
    product_type_enum = Column(
        String(20), nullable=False, default=ProductType.PHYSICAL.value
    )
    is_digital = Column(Boolean, default=False, index=True)

    # === DIGITAL PRODUCT FIELDS ===
    digital_delivery_method = Column(String(20))  # DigitalDeliveryMethod values
    platform = Column(String(50), index=True)  # 'steam', 'playstation', 'xbox', etc.
    region_restrictions = Column(JSON)  # ["EU", "US"] or null for global
    license_type = Column(String(50))  # 'single_use', 'subscription', 'lifetime'

    # === NON-LOCALIZED FIELDS ===
    brand = Column(String, index=True)
    google_product_category = Column(String, index=True)
    category_path = Column(String)  # Normalized category hierarchy
    condition = Column(String)

    # === PRICING ===
    price = Column(String)  # Raw price string "19.99 EUR" (kept for reference)
    price_numeric = Column(Float)  # Parsed numeric price
    sale_price = Column(String)  # Raw sale price string
    sale_price_numeric = Column(Float)  # Parsed numeric sale price
    currency = Column(String(3), default="EUR")

    # === MEDIA ===
    image_link = Column(String)
    additional_image_link = Column(String)  # Legacy single string
    additional_images = Column(JSON)  # Array of image URLs

    # === PRODUCT ATTRIBUTES (Flexible) ===
    attributes = Column(JSON)  # {color, size, material, etc.}

    # === PHYSICAL PRODUCT FIELDS ===
    weight = Column(Float)  # In kg
    weight_unit = Column(String(10), default="kg")
    dimensions = Column(JSON)  # {length, width, height, unit}

    # === GOOGLE SHOPPING FIELDS (Preserved for Letzshop) ===
    link = Column(String)
    availability = Column(String, index=True)
    adult = Column(String)
    multipack = Column(Integer)
    is_bundle = Column(String)
    age_group = Column(String)
    color = Column(String)
    gender = Column(String)
    material = Column(String)
    pattern = Column(String)
    size = Column(String)
    size_type = Column(String)
    size_system = Column(String)
    item_group_id = Column(String)
    product_type_raw = Column(String)  # Original feed value (renamed from product_type)
    custom_label_0 = Column(String)
    custom_label_1 = Column(String)
    custom_label_2 = Column(String)
    custom_label_3 = Column(String)
    custom_label_4 = Column(String)
    unit_pricing_measure = Column(String)
    unit_pricing_base_measure = Column(String)
    identifier_exists = Column(String)
    shipping = Column(String)

    # === STATUS ===
    is_active = Column(Boolean, default=True, index=True)

    # === RELATIONSHIPS ===
    translations = relationship(
        "MarketplaceProductTranslation",
        back_populates="marketplace_product",
        cascade="all, delete-orphan",
    )
    vendor_products = relationship("Product", back_populates="marketplace_product")

    # === INDEXES ===
    __table_args__ = (
        Index("idx_marketplace_vendor", "marketplace", "vendor_name"),
        Index("idx_marketplace_brand", "marketplace", "brand"),
        Index("idx_mp_gtin_marketplace", "gtin", "marketplace"),
        Index("idx_mp_product_type", "product_type_enum", "is_digital"),
    )

    def __repr__(self):
        return (
            f"<MarketplaceProduct(id={self.id}, "
            f"marketplace_product_id='{self.marketplace_product_id}', "
            f"marketplace='{self.marketplace}', "
            f"vendor='{self.vendor_name}')>"
        )

    # === HELPER PROPERTIES ===

    @property
    def product_type(self) -> ProductType:
        """Get product type as enum."""
        return ProductType(self.product_type_enum)

    @product_type.setter
    def product_type(self, value: ProductType | str):
        """Set product type from enum or string."""
        if isinstance(value, ProductType):
            self.product_type_enum = value.value
        else:
            self.product_type_enum = value

    @property
    def delivery_method(self) -> DigitalDeliveryMethod | None:
        """Get digital delivery method as enum."""
        if self.digital_delivery_method:
            return DigitalDeliveryMethod(self.digital_delivery_method)
        return None

    @delivery_method.setter
    def delivery_method(self, value: DigitalDeliveryMethod | str | None):
        """Set delivery method from enum or string."""
        if value is None:
            self.digital_delivery_method = None
        elif isinstance(value, DigitalDeliveryMethod):
            self.digital_delivery_method = value.value
        else:
            self.digital_delivery_method = value

    def get_translation(self, language: str) -> "MarketplaceProductTranslation | None":
        """Get translation for a specific language."""
        for t in self.translations:
            if t.language == language:
                return t
        return None

    def get_title(self, language: str = "en") -> str | None:
        """Get title for a specific language with fallback to 'en'."""
        translation = self.get_translation(language)
        if translation:
            return translation.title

        # Fallback to English
        if language != "en":
            en_translation = self.get_translation("en")
            if en_translation:
                return en_translation.title

        return None

    def get_description(self, language: str = "en") -> str | None:
        """Get description for a specific language with fallback to 'en'."""
        translation = self.get_translation(language)
        if translation:
            return translation.description

        # Fallback to English
        if language != "en":
            en_translation = self.get_translation("en")
            if en_translation:
                return en_translation.description

        return None

    @property
    def effective_price(self) -> float | None:
        """Get the effective numeric price."""
        return self.price_numeric

    @property
    def effective_sale_price(self) -> float | None:
        """Get the effective numeric sale price."""
        return self.sale_price_numeric

    @property
    def all_images(self) -> list[str]:
        """Get all product images as a list."""
        images = []
        if self.image_link:
            images.append(self.image_link)
        if self.additional_images:
            images.extend(self.additional_images)
        elif self.additional_image_link:
            # Legacy single string format
            images.append(self.additional_image_link)
        return images