# ================================================================
# services/notification/app/models/templates.py
# ================================================================
"""
Template-specific models for email and WhatsApp templates
"""

from sqlalchemy import Column, String, Text, Boolean, DateTime, JSON, Integer
from sqlalchemy.dialects.postgresql import UUID
from datetime import datetime
import uuid

from shared.database.base import Base

class EmailTemplate(Base):
    """Email-specific templates with HTML support"""
    __tablename__ = "email_templates"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    tenant_id = Column(UUID(as_uuid=True), nullable=True, index=True)
    
    # Template identification
    template_key = Column(String(100), nullable=False, unique=True)
    name = Column(String(255), nullable=False)
    description = Column(Text, nullable=True)
    
    # Email-specific content
    subject = Column(String(255), nullable=False)
    html_body = Column(Text, nullable=False)
    text_body = Column(Text, nullable=True)  # Plain text fallback
    
    # Email settings
    from_email = Column(String(255), nullable=True)
    from_name = Column(String(255), nullable=True)
    reply_to = Column(String(255), nullable=True)
    
    # Template variables
    variables = Column(JSON, nullable=True)  # Expected variables and their types
    sample_data = Column(JSON, nullable=True)  # Sample data for preview
    
    # Configuration
    language = Column(String(2), default="es")
    is_active = Column(Boolean, default=True)
    is_system = Column(Boolean, default=False)
    
    # Timestamps
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)


class WhatsAppTemplate(Base):
    """WhatsApp-specific templates"""
    __tablename__ = "whatsapp_templates"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    tenant_id = Column(UUID(as_uuid=True), nullable=True, index=True)
    
    # Template identification
    template_key = Column(String(100), nullable=False, unique=True)
    name = Column(String(255), nullable=False)
    
    # WhatsApp template details
    whatsapp_template_name = Column(String(255), nullable=False)  # Template name in WhatsApp Business API
    whatsapp_template_id = Column(String(255), nullable=True)
    language_code = Column(String(10), default="es")
    
    # Template content
    header_text = Column(String(60), nullable=True)  # WhatsApp header limit
    body_text = Column(Text, nullable=False)
    footer_text = Column(String(60), nullable=True)  # WhatsApp footer limit
    
    # Template parameters
    parameter_count = Column(Integer, default=0)
    parameters = Column(JSON, nullable=True)  # Parameter definitions
    
    # Status
    approval_status = Column(String(20), default="pending")  # pending, approved, rejected
    is_active = Column(Boolean, default=True)
    
    # Timestamps
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)