"""Units: the picker list, read, field edits, renumber (new lot) and soft delete.

New units are made through POST /api/projects/{id}/units. Same access rules as projects: reads need any
session; edits need Clerical; renumber and delete need clerical_supervisor; admin with an it_reason.
"""

from __future__ import annotations

from typing import Any

from fastapi import APIRouter, Depends, Query
from pydantic import BaseModel, Field

from ..domain import projects as dom
from .deps import Db, Principal, current_principal, get_db
from .projects import TEXT, FieldCas, ReasonBody, authorize

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


class RenumberUnit(BaseModel):
    lot: str = Field(max_length=40)
    reason: str | None = Field(None, max_length=TEXT)
    it_reason: str | None = Field(None, max_length=TEXT)


@router.get("")
def list_units(
    p: Principal = Depends(current_principal),  # noqa: B008
    d: Db = Depends(get_db),  # noqa: B008
    project_id: int | None = Query(None),
    q: str = Query("", max_length=200),
    status: str = Query("active", max_length=20),
) -> list[dict[str, Any]]:
    return dom.list_units(d.conn, project_id=project_id, q=q, status=status)


@router.get("/{unit_id}")
def unit_detail(
    unit_id: int,
    p: Principal = Depends(current_principal),  # noqa: B008
    d: Db = Depends(get_db),  # noqa: B008
) -> dict[str, Any]:
    return dom.unit_detail(d.conn, unit_id)


@router.patch("/{unit_id}")
def update_unit(
    unit_id: int,
    body: FieldCas,
    p: Principal = Depends(current_principal),  # noqa: B008
    d: Db = Depends(get_db),  # noqa: B008
) -> dict[str, Any]:
    who = authorize(p, supervisor=False, it_reason=body.it_reason)
    return dom.update_unit(d.conn, who, unit_id, body.values, body.base)


@router.post("/{unit_id}/renumber")
def renumber_unit(
    unit_id: int,
    body: RenumberUnit,
    p: Principal = Depends(current_principal),  # noqa: B008
    d: Db = Depends(get_db),  # noqa: B008
) -> dict[str, Any]:
    who = authorize(p, supervisor=True, it_reason=body.it_reason)
    return dom.renumber_unit(d.conn, who, unit_id, body.lot, body.reason)


@router.delete("/{unit_id}")
def remove_unit(
    unit_id: int,
    body: ReasonBody,
    p: Principal = Depends(current_principal),  # noqa: B008
    d: Db = Depends(get_db),  # noqa: B008
) -> dict[str, Any]:
    who = authorize(p, supervisor=True, it_reason=body.it_reason)
    return dom.remove_unit(d.conn, who, unit_id, body.reason)