# app/services/team_service.py
"""
Team service for vendor team management.

This module provides:
- Team member invitation
- Role management
- Team member CRUD operations
"""

import logging
from datetime import UTC, datetime
from typing import Any

from sqlalchemy.orm import Session

from app.exceptions import ValidationException
from models.database.user import User
from models.database.vendor import Role, VendorUser

logger = logging.getLogger(__name__)


class TeamService:
    """Service for team management operations."""

    def get_team_members(
        self, db: Session, vendor_id: int, current_user: User
    ) -> list[dict[str, Any]]:
        """
        Get all team members for vendor.

        Args:
            db: Database session
            vendor_id: Vendor ID
            current_user: Current user

        Returns:
            List of team members
        """
        try:
            vendor_users = (
                db.query(VendorUser)
                .filter(VendorUser.vendor_id == vendor_id, VendorUser.is_active == True)
                .all()
            )

            members = []
            for vu in vendor_users:
                members.append(
                    {
                        "id": vu.user_id,
                        "email": vu.user.email,
                        "first_name": vu.user.first_name,
                        "last_name": vu.user.last_name,
                        "role": vu.role.name,
                        "role_id": vu.role_id,
                        "is_active": vu.is_active,
                        "joined_at": vu.created_at,
                    }
                )

            return members

        except Exception as e:
            logger.error(f"Error getting team members: {str(e)}")
            raise ValidationException("Failed to retrieve team members")

    def invite_team_member(
        self, db: Session, vendor_id: int, invitation_data: dict, current_user: User
    ) -> dict[str, Any]:
        """
        Invite a new team member.

        Args:
            db: Database session
            vendor_id: Vendor ID
            invitation_data: Invitation details
            current_user: Current user

        Returns:
            Invitation result
        """
        try:
            # TODO: Implement full invitation flow with email
            # For now, return placeholder
            return {
                "message": "Team invitation feature coming soon",
                "email": invitation_data.get("email"),
                "role": invitation_data.get("role"),
            }

        except Exception as e:
            logger.error(f"Error inviting team member: {str(e)}")
            raise ValidationException("Failed to invite team member")

    def update_team_member(
        self,
        db: Session,
        vendor_id: int,
        user_id: int,
        update_data: dict,
        current_user: User,
    ) -> dict[str, Any]:
        """
        Update team member role or status.

        Args:
            db: Database session
            vendor_id: Vendor ID
            user_id: User ID to update
            update_data: Update data
            current_user: Current user

        Returns:
            Updated member info
        """
        try:
            vendor_user = (
                db.query(VendorUser)
                .filter(
                    VendorUser.vendor_id == vendor_id, VendorUser.user_id == user_id
                )
                .first()
            )

            if not vendor_user:
                raise ValidationException("Team member not found")

            # Update fields
            if "role_id" in update_data:
                vendor_user.role_id = update_data["role_id"]

            if "is_active" in update_data:
                vendor_user.is_active = update_data["is_active"]

            vendor_user.updated_at = datetime.now(UTC)
            db.flush()
            db.refresh(vendor_user)

            return {
                "message": "Team member updated successfully",
                "user_id": user_id,
            }

        except Exception as e:
            logger.error(f"Error updating team member: {str(e)}")
            raise ValidationException("Failed to update team member")

    def remove_team_member(
        self, db: Session, vendor_id: int, user_id: int, current_user: User
    ) -> bool:
        """
        Remove team member from vendor.

        Args:
            db: Database session
            vendor_id: Vendor ID
            user_id: User ID to remove
            current_user: Current user

        Returns:
            True if removed
        """
        try:
            vendor_user = (
                db.query(VendorUser)
                .filter(
                    VendorUser.vendor_id == vendor_id, VendorUser.user_id == user_id
                )
                .first()
            )

            if not vendor_user:
                raise ValidationException("Team member not found")

            # Soft delete
            vendor_user.is_active = False
            vendor_user.updated_at = datetime.now(UTC)

            logger.info(f"Removed user {user_id} from vendor {vendor_id}")
            return True

        except Exception as e:
            logger.error(f"Error removing team member: {str(e)}")
            raise ValidationException("Failed to remove team member")

    def get_vendor_roles(self, db: Session, vendor_id: int) -> list[dict[str, Any]]:
        """
        Get available roles for vendor.

        Args:
            db: Database session
            vendor_id: Vendor ID

        Returns:
            List of roles
        """
        try:
            roles = db.query(Role).filter(Role.vendor_id == vendor_id).all()

            return [
                {
                    "id": role.id,
                    "name": role.name,
                    "permissions": role.permissions,
                }
                for role in roles
            ]

        except Exception as e:
            logger.error(f"Error getting vendor roles: {str(e)}")
            raise ValidationException("Failed to retrieve roles")


# Create service instance
team_service = TeamService()