"""Child management router."""

from typing import Annotated
from fastapi import APIRouter, HTTPException, Depends

from baby_monitor.models.child import CreateChildRequest, ChildResponse
from baby_monitor.routers.auth import verify_token
from baby_monitor.repositories.child.sqlite_child import SQLiteChildRepository
from baby_monitor.repositories.dependencies.get_child_repository import (
    get_child_repository,
)

router = APIRouter(prefix="/api/children", tags=["children"])


@router.post("", response_model=ChildResponse, status_code=201)
def create_child(
    request: CreateChildRequest,
    user_id: Annotated[int, Depends(verify_token)],
    child_repo: Annotated[SQLiteChildRepository, Depends(get_child_repository)],
) -> ChildResponse:
    """Create a new child for the authenticated user."""
    child = child_repo.create(
        name=request.name,
        birth_time=request.birth_time,
        birth_weight=request.birth_weight,
        user_id=user_id,
    )

    return ChildResponse(**child)


@router.get("", response_model=list[ChildResponse])
def get_user_children(
    user_id: Annotated[int, Depends(verify_token)],
    child_repo: Annotated[SQLiteChildRepository, Depends(get_child_repository)],
) -> list[ChildResponse]:
    """Get all children for the authenticated user."""
    children = child_repo.get_by_user_id(user_id)
    return [ChildResponse(**child) for child in children]


@router.get("/{child_id}", response_model=ChildResponse)
def get_child(
    child_id: int,
    user_id: Annotated[int, Depends(verify_token)],
    child_repo: Annotated[SQLiteChildRepository, Depends(get_child_repository)],
) -> ChildResponse:
    """Get a specific child by ID."""
    child = child_repo.get_by_id(child_id)

    if not child:
        raise HTTPException(status_code=404, detail="Child not found")

    # Verify the child belongs to the authenticated user
    if child["user_id"] != user_id:
        raise HTTPException(status_code=403, detail="Access denied")

    return ChildResponse(**child)


@router.put("/{child_id}", response_model=ChildResponse)
def update_child(
    child_id: int,
    request: CreateChildRequest,
    user_id: Annotated[int, Depends(verify_token)],
    child_repo: Annotated[SQLiteChildRepository, Depends(get_child_repository)],
) -> ChildResponse:
    """Update a child's information."""
    # First check if child exists and belongs to user
    child = child_repo.get_by_id(child_id)

    if not child:
        raise HTTPException(status_code=404, detail="Child not found")

    if child["user_id"] != user_id:
        raise HTTPException(status_code=403, detail="Access denied")

    # Update the child
    updated_child = child_repo.update(
        child_id=child_id,
        name=request.name,
        birth_time=request.birth_time,
        birth_weight=request.birth_weight,
    )

    if not updated_child:
        raise HTTPException(status_code=500, detail="Update failed")

    return ChildResponse(**updated_child)