"""Contact API endpoints."""

from __future__ import annotations

from typing import Optional

from fastapi import APIRouter, Depends, HTTPException, Query, Response, status
from sqlalchemy.ext.asyncio import AsyncSession

from app.core.db import get_db
from app.core.deps import get_current_user
from app.models.user import User
from app.schemas.contact import ContactCreate, ContactOut, ContactUpdate
from app.services.contact_service import (
    InvalidAccount,
    create_contact as svc_create_contact,
    get_contact as svc_get_contact,
    list_contacts as svc_list_contacts,
    soft_delete_contact as svc_soft_delete_contact,
    update_contact as svc_update_contact,
)

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


@router.post(
    "/",
    response_model=ContactOut,
    status_code=status.HTTP_201_CREATED,
    summary="Create a new contact",
)
async def create_contact(
    payload: ContactCreate,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
) -> ContactOut:
    try:
        contact = await svc_create_contact(
            db, payload, org_id=current_user.org_id, owner_id=current_user.id
        )
    except InvalidAccount as e:
        raise HTTPException(status_code=404, detail=str(e)) from e
    return ContactOut.model_validate(contact)


@router.get(
    "/",
    response_model=list[ContactOut],
    summary="List contacts (paginated, filterable)",
)
async def list_contacts(
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    account_id: Optional[int] = None,
    owner_id: Optional[int] = None,
    q: Optional[str] = None,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
) -> list[ContactOut]:
    contacts = await svc_list_contacts(
        db,
        org_id=current_user.org_id,
        skip=skip,
        limit=limit,
        account_id=account_id,
        owner_id=owner_id,
        q=q,
    )
    return [ContactOut.model_validate(c) for c in contacts]


@router.get(
    "/{contact_id}",
    response_model=ContactOut,
    summary="Get one contact",
)
async def get_contact(
    contact_id: int,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
) -> ContactOut:
    contact = await svc_get_contact(db, contact_id, org_id=current_user.org_id)
    if contact is None:
        raise HTTPException(status_code=404, detail="Contact not found")
    return ContactOut.model_validate(contact)


@router.patch(
    "/{contact_id}",
    response_model=ContactOut,
    summary="Update a contact",
)
async def update_contact(
    contact_id: int,
    payload: ContactUpdate,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
) -> ContactOut:
    contact = await svc_get_contact(db, contact_id, org_id=current_user.org_id)
    if contact is None:
        raise HTTPException(status_code=404, detail="Contact not found")
    try:
        updated = await svc_update_contact(db, contact, payload)
    except InvalidAccount as e:
        raise HTTPException(status_code=404, detail=str(e)) from e
    return ContactOut.model_validate(updated)


@router.delete(
    "/{contact_id}",
    status_code=status.HTTP_204_NO_CONTENT,
    response_class=Response,
    summary="Soft-delete a contact",
)
async def delete_contact(
    contact_id: int,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
) -> Response:
    contact = await svc_get_contact(db, contact_id, org_id=current_user.org_id)
    if contact is None:
        raise HTTPException(status_code=404, detail="Contact not found")
    await svc_soft_delete_contact(db, contact)
    return Response(status_code=status.HTTP_204_NO_CONTENT)


__all__ = ["router"]