"""Project Template model for reusable project configurations.

Allows users to create templates with predefined task statuses and custom fields
that can be used to quickly set up new projects.
"""
import uuid
from sqlalchemy import Column, String, Text, Boolean, DateTime, ForeignKey, JSON
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.core.database import Base


class ProjectTemplate(Base):
    """Template for creating projects with predefined configurations.

    A template stores:
    - Basic project metadata (name, description)
    - Predefined task statuses (stored as JSON)
    - Predefined custom field definitions (stored as JSON)

    When a project is created from a template, the TaskStatus and CustomField
    records are copied to the new project.
    """
    __tablename__ = "pjctrl_project_templates"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    name = Column(String(200), nullable=False)
    description = Column(Text, nullable=True)

    # Template owner
    owner_id = Column(String(36), ForeignKey("pjctrl_users.id"), nullable=False)

    # Whether the template is available to all users or just the owner
    is_public = Column(Boolean, default=False, nullable=False)

    # Soft delete flag
    is_active = Column(Boolean, default=True, nullable=False)

    # Predefined task statuses as JSON array
    # Format: [{"name": "To Do", "color": "#808080", "position": 0, "is_done": false}, ...]
    task_statuses = Column(JSON, nullable=True)

    # Predefined custom field definitions as JSON array
    # Format: [{"name": "Priority", "field_type": "dropdown", "options": [...], ...}, ...]
    custom_fields = Column(JSON, nullable=True)

    # Optional default project settings
    default_security_level = Column(String(20), default="department", nullable=True)

    created_at = Column(DateTime, server_default=func.now(), nullable=False)
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)

    # Relationships
    owner = relationship("User", foreign_keys=[owner_id])


# Default template data for system templates
SYSTEM_TEMPLATES = [
    {
        "name": "Basic Project",
        "description": "A simple project template with standard task statuses.",
        "is_public": True,
        "task_statuses": [
            {"name": "To Do", "color": "#808080", "position": 0, "is_done": False},
            {"name": "In Progress", "color": "#0066cc", "position": 1, "is_done": False},
            {"name": "Done", "color": "#00cc66", "position": 2, "is_done": True},
        ],
        "custom_fields": [],
    },
    {
        "name": "Software Development",
        "description": "Template for software development projects with extended workflow.",
        "is_public": True,
        "task_statuses": [
            {"name": "Backlog", "color": "#808080", "position": 0, "is_done": False},
            {"name": "To Do", "color": "#3366cc", "position": 1, "is_done": False},
            {"name": "In Progress", "color": "#0066cc", "position": 2, "is_done": False},
            {"name": "Code Review", "color": "#cc6600", "position": 3, "is_done": False},
            {"name": "Testing", "color": "#9933cc", "position": 4, "is_done": False},
            {"name": "Done", "color": "#00cc66", "position": 5, "is_done": True},
        ],
        "custom_fields": [
            {
                "name": "Story Points",
                "field_type": "number",
                "is_required": False,
                "position": 0,
            },
            {
                "name": "Sprint",
                "field_type": "dropdown",
                "options": ["Sprint 1", "Sprint 2", "Sprint 3", "Backlog"],
                "is_required": False,
                "position": 1,
            },
        ],
    },
    {
        "name": "Marketing Campaign",
        "description": "Template for marketing campaign management.",
        "is_public": True,
        "task_statuses": [
            {"name": "Planning", "color": "#808080", "position": 0, "is_done": False},
            {"name": "Content Creation", "color": "#cc6600", "position": 1, "is_done": False},
            {"name": "Review", "color": "#9933cc", "position": 2, "is_done": False},
            {"name": "Scheduled", "color": "#0066cc", "position": 3, "is_done": False},
            {"name": "Published", "color": "#00cc66", "position": 4, "is_done": True},
        ],
        "custom_fields": [
            {
                "name": "Channel",
                "field_type": "dropdown",
                "options": ["Email", "Social Media", "Website", "Print", "Event"],
                "is_required": False,
                "position": 0,
            },
            {
                "name": "Target Audience",
                "field_type": "text",
                "is_required": False,
                "position": 1,
            },
        ],
    },
]