# models/database/platform.py
"""
Platform model representing a business offering/product line.

Platforms are independent business products (e.g., OMS, Loyalty Program, Site Builder)
that can have their own:
- Marketing pages (homepage, pricing, about)
- Vendor default pages (fallback storefront pages)
- Subscription tiers with platform-specific features
- Branding and configuration

Each vendor can belong to multiple platforms via the VendorPlatform junction table.
"""

from sqlalchemy import (
    JSON,
    Boolean,
    Column,
    Index,
    Integer,
    String,
    Text,
)
from sqlalchemy.orm import relationship

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


class Platform(Base, TimestampMixin):
    """
    Represents a business offering/product line.

    Examples:
    - Wizamart OMS (Order Management System)
    - Loyalty+ (Loyalty Program Platform)
    - Site Builder (Website Builder for Local Businesses)

    Each platform has:
    - Its own domain (production) or path prefix (development)
    - Independent CMS pages (marketing pages + vendor defaults)
    - Platform-specific subscription tiers
    - Custom branding and theme
    """

    __tablename__ = "platforms"

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

    # ========================================================================
    # Identity
    # ========================================================================

    code = Column(
        String(50),
        unique=True,
        nullable=False,
        index=True,
        comment="Unique platform identifier (e.g., 'oms', 'loyalty', 'sites')",
    )

    name = Column(
        String(100),
        nullable=False,
        comment="Display name (e.g., 'Wizamart OMS')",
    )

    description = Column(
        Text,
        nullable=True,
        comment="Platform description for admin/marketing purposes",
    )

    # ========================================================================
    # Domain Routing
    # ========================================================================

    domain = Column(
        String(255),
        unique=True,
        nullable=True,
        index=True,
        comment="Production domain (e.g., 'oms.lu', 'loyalty.lu')",
    )

    path_prefix = Column(
        String(50),
        unique=True,
        nullable=True,
        index=True,
        comment="Development path prefix (e.g., 'oms' for localhost:9999/oms/*)",
    )

    # ========================================================================
    # Branding
    # ========================================================================

    logo = Column(
        String(500),
        nullable=True,
        comment="Logo URL for light mode",
    )

    logo_dark = Column(
        String(500),
        nullable=True,
        comment="Logo URL for dark mode",
    )

    favicon = Column(
        String(500),
        nullable=True,
        comment="Favicon URL",
    )

    theme_config = Column(
        JSON,
        nullable=True,
        default=dict,
        comment="Theme configuration (colors, fonts, etc.)",
    )

    # ========================================================================
    # Localization
    # ========================================================================

    default_language = Column(
        String(5),
        default="fr",
        nullable=False,
        comment="Default language code (e.g., 'fr', 'en', 'de')",
    )

    supported_languages = Column(
        JSON,
        default=["fr", "de", "en"],
        nullable=False,
        comment="List of supported language codes",
    )

    # ========================================================================
    # Status
    # ========================================================================

    is_active = Column(
        Boolean,
        default=True,
        nullable=False,
        comment="Whether the platform is active and accessible",
    )

    is_public = Column(
        Boolean,
        default=True,
        nullable=False,
        comment="Whether the platform is visible in public listings",
    )

    # ========================================================================
    # Configuration
    # ========================================================================

    settings = Column(
        JSON,
        nullable=True,
        default=dict,
        comment="Platform-specific settings and feature flags",
    )

    # ========================================================================
    # Relationships
    # ========================================================================

    # Content pages belonging to this platform
    content_pages = relationship(
        "ContentPage",
        back_populates="platform",
        cascade="all, delete-orphan",
    )

    # Vendors on this platform (via junction table)
    vendor_platforms = relationship(
        "VendorPlatform",
        back_populates="platform",
        cascade="all, delete-orphan",
    )

    # Subscription tiers for this platform
    subscription_tiers = relationship(
        "SubscriptionTier",
        back_populates="platform",
        foreign_keys="SubscriptionTier.platform_id",
    )

    # Admin assignments for this platform
    admin_platforms = relationship(
        "AdminPlatform",
        back_populates="platform",
        cascade="all, delete-orphan",
    )

    # Menu visibility configuration for platform admins
    menu_configs = relationship(
        "AdminMenuConfig",
        back_populates="platform",
        cascade="all, delete-orphan",
    )

    # Module enablement configuration
    modules = relationship(
        "PlatformModule",
        back_populates="platform",
        cascade="all, delete-orphan",
    )

    # ========================================================================
    # Indexes
    # ========================================================================

    __table_args__ = (
        Index("idx_platform_active", "is_active"),
        Index("idx_platform_public", "is_public", "is_active"),
    )

    # ========================================================================
    # Properties
    # ========================================================================

    @property
    def base_url(self) -> str:
        """Get the base URL for this platform (for link generation)."""
        if self.domain:
            return f"https://{self.domain}"
        if self.path_prefix:
            return f"/{self.path_prefix}"
        return "/"

    def __repr__(self) -> str:
        return f"<Platform(code='{self.code}', name='{self.name}')>"