"""Survey response APIs — Phase 11.6."""
from __future__ import annotations

from uuid import UUID

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

from app.api.deps import get_db, get_pagination, require_tenant
from app.api.permissions import require_permissions
from app.commands.forms import FormsCommands
from app.permissions.definitions import SURVEYS_CREATE, SURVEYS_UPDATE, SURVEYS_VIEW
from app.queries.forms import FormsQueries
from app.schemas.forms import (
    SurveyResponseCreate,
    SurveyResponseListResponse,
    SurveyResponseRead,
    SurveyResponseUpdate,
)
from app.specifications.forms import RESPONSE_SORT_FIELDS, SurveyResponseListSpec
from shared.pagination import PaginationParams
from shared.security import CurrentUser

router = APIRouter()
_STATUSES = {"received", "processed", "failed", "archived"}


def _list_spec(
    workspace_id: UUID | None = Query(default=None),
    survey_id: UUID | None = Query(default=None),
    status_filter: str | None = Query(default=None, alias="status"),
    q: str | None = Query(default=None, max_length=100),
    sort_by: str = Query(default="created_at"),
    sort_dir: str = Query(default="desc", pattern="^(?i)(asc|desc)$"),
) -> SurveyResponseListSpec:
    if sort_by not in RESPONSE_SORT_FIELDS:
        sort_by = "created_at"
    return SurveyResponseListSpec(
        workspace_id=workspace_id,
        survey_id=survey_id,
        status=status_filter if status_filter in _STATUSES else None,
        q=q,
        sort_by=sort_by,
        sort_dir=sort_dir.lower(),
    )


@router.post(
    "", response_model=SurveyResponseRead, status_code=status.HTTP_201_CREATED
)
async def create_response(
    body: SurveyResponseCreate,
    tenant_id: UUID = Depends(require_tenant),
    db: AsyncSession = Depends(get_db),
    user: CurrentUser = Depends(require_permissions(SURVEYS_CREATE)),
):
    return await FormsCommands(db).create_survey_response(tenant_id, body, actor=user)


@router.get("", response_model=SurveyResponseListResponse)
async def list_responses(
    tenant_id: UUID = Depends(require_tenant),
    pagination: PaginationParams = Depends(get_pagination),
    spec: SurveyResponseListSpec = Depends(_list_spec),
    db: AsyncSession = Depends(get_db),
    _user: CurrentUser = Depends(require_permissions(SURVEYS_VIEW)),
):
    items, total = await FormsQueries(db).list_survey_responses(
        tenant_id, offset=pagination.offset, limit=pagination.page_size, spec=spec
    )
    return SurveyResponseListResponse(
        items=items, total=total, page=pagination.page, page_size=pagination.page_size
    )


@router.get("/{response_id}", response_model=SurveyResponseRead)
async def get_response(
    response_id: UUID,
    tenant_id: UUID = Depends(require_tenant),
    db: AsyncSession = Depends(get_db),
    _user: CurrentUser = Depends(require_permissions(SURVEYS_VIEW)),
):
    return await FormsQueries(db).get_survey_response(tenant_id, response_id)


@router.patch("/{response_id}", response_model=SurveyResponseRead)
async def update_response(
    response_id: UUID,
    body: SurveyResponseUpdate,
    tenant_id: UUID = Depends(require_tenant),
    db: AsyncSession = Depends(get_db),
    user: CurrentUser = Depends(require_permissions(SURVEYS_UPDATE)),
):
    return await FormsCommands(db).update_survey_response(
        tenant_id, response_id, body, actor=user
    )
