"""WESP-shaped feed accounting API (/api/feed-accounting) for consumption.html."""

from __future__ import annotations

from fastapi import APIRouter, Depends, HTTPException, Query, status
from fastapi.responses import Response
from pydantic import BaseModel, Field

from app.modules.sync.tenant import TenantContext, require_enterprise_zootech
from app.modules.zootech import wesp_feed_accounting_service as fa_service

router = APIRouter()


def _require_ent(enterprise_id: str, tenant: TenantContext) -> None:
    if tenant.enterprise_id != enterprise_id:
        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="ENTERPRISE_FORBIDDEN")


class OrgSettingsBody(BaseModel):
    organization_name: str = ""
    okpo: str = ""
    department: str = ""
    farm_name: str = ""
    brigade: str = ""
    animal_type: str = ""
    responsible_person: str = ""
    zootechnician: str = ""
    warehouse_keeper: str = ""
    document_number_prefix: str = ""


class SignatureBody(BaseModel):
    png_base64: str = Field(min_length=10)


@router.get("/feed-accounting/org-settings")
def get_org_settings_wesp(
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    return fa_service.get_org_settings(enterprise_id)


@router.put("/feed-accounting/org-settings")
def put_org_settings_wesp(
    body: OrgSettingsBody,
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    return fa_service.save_org_settings(enterprise_id, body.model_dump())


@router.get("/feed-accounting/signatures/{role}.png")
def get_signature_png_wesp(
    role: str,
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    png = fa_service.get_signature_png(enterprise_id, role)
    if not png:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="SIGNATURE_NOT_FOUND")
    return Response(content=png, media_type="image/png")


@router.post("/feed-accounting/signatures/{role}")
def post_signature_wesp(
    role: str,
    body: SignatureBody,
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    result = fa_service.save_signature(enterprise_id, role, body.png_base64)
    if not result.get("success"):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail={"message": result.get("message") or "Ошибка сохранения подписи"},
        )
    return result


@router.get("/feed-accounting/sp20-preview")
def sp20_preview_wesp(
    month: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    return fa_service.sp20_preview(enterprise_id, month)


def _xlsx_response(content: bytes, filename: str) -> Response:
    return Response(
        content=content,
        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
        headers={"Content-Disposition": f'attachment; filename="{filename}"'},
    )


@router.get("/feed-accounting/consumption.xlsx")
def export_consumption_xlsx_wesp(
    date_from: str = Query(...),
    date_to: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_consumption_xlsx(enterprise_id, date_from, date_to)
    filename = f"consumption_{fa_service.safe_filename_part(date_from)}_{fa_service.safe_filename_part(date_to)}.xlsx"
    return _xlsx_response(content, filename)


@router.get("/feed-accounting/stock-balances.xlsx")
def export_stock_xlsx_wesp(
    date_from: str = Query(...),
    date_to: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_stock_balances_xlsx(enterprise_id, date_from, date_to)
    filename = f"stock_{fa_service.safe_filename_part(date_from)}_{fa_service.safe_filename_part(date_to)}.xlsx"
    return _xlsx_response(content, filename)


@router.get("/feed-accounting/sp20.xlsx")
def export_sp20_xlsx_wesp(
    month: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_sp20_xlsx(enterprise_id, month)
    return _xlsx_response(content, f"sp20_{fa_service.safe_filename_part(month)}.xlsx")


@router.get("/feed-accounting/journal.xlsx")
def export_journal_xlsx_wesp(
    month: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_journal_xlsx(enterprise_id, month)
    return _xlsx_response(content, f"journal_{fa_service.safe_filename_part(month)}.xlsx")


@router.get("/feed-accounting/documents.zip")
def export_documents_zip_wesp(
    date_from: str = Query(...),
    date_to: str = Query(...),
    month: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_documents_zip(enterprise_id, date_from, date_to, month)
    return Response(
        content=content,
        media_type="application/zip",
        headers={"Content-Disposition": f'attachment; filename="documents_{fa_service.safe_filename_part(month)}.zip"'},
    )


def _pdf_response(content: bytes, filename: str) -> Response:
    return Response(
        content=content,
        media_type="application/pdf",
        headers={"Content-Disposition": f'attachment; filename="{filename}"'},
    )


@router.get("/feed-accounting/consumption.pdf")
def export_consumption_pdf_wesp(
    date_from: str = Query(...),
    date_to: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_consumption_pdf(enterprise_id, date_from, date_to)
    filename = f"consumption_{fa_service.safe_filename_part(date_from)}_{fa_service.safe_filename_part(date_to)}.pdf"
    return _pdf_response(content, filename)


@router.get("/feed-accounting/sp20.pdf")
def export_sp20_pdf_wesp(
    month: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_sp20_pdf(enterprise_id, month)
    return _pdf_response(content, f"sp20_{fa_service.safe_filename_part(month)}.pdf")


@router.get("/feed-accounting/journal.pdf")
def export_journal_pdf_wesp(
    month: str = Query(...),
    enterprise_id: str = Query(...),
    tenant: TenantContext = Depends(require_enterprise_zootech),
):
    _require_ent(enterprise_id, tenant)
    content = fa_service.build_journal_pdf(enterprise_id, month)
    return _pdf_response(content, f"journal_{fa_service.safe_filename_part(month)}.pdf")