# -*- coding: utf-8 -*-
"""보고서 내보내기 끼워 넣기 (api_report.py) — 시트 모형 → 엑셀 · CSV · 조달청 XML 검증.

근거: 지식DB STmate/old/20_분석 19 §3 · 20 §3 · 30(조달청 XSD).
시트 모형은 화면(scr_report.js)이 report_*.js 로 만들어 보냄 — 계산은 브라우저 엔진과 같은 코드.
"""

from __future__ import annotations

import pathlib
import urllib.parse

from fastapi import APIRouter, HTTPException
from fastapi.responses import Response
from pydantic import BaseModel

from report_xlsx import build_csv, build_report_xlsx

HERE = pathlib.Path(__file__).resolve().parent
XSD = (
    HERE.parent.parent
    / "resources/knowledge/original/경쟁사 프로그램/STmate/old/30_원자료/조달청_공사원가호환규정.xsd"
)
router = APIRouter()


class ReportReq(BaseModel):
    sheets: list[dict] = []
    filename: str = "STMATE_보고서.xlsx"


class XmlReq(BaseModel):
    xml: str


def _disposition(name: str) -> str:
    return f"attachment; filename*=UTF-8''{urllib.parse.quote(name)}"


@router.post("/api/report/xlsx")
def api_report_xlsx(req: ReportReq):
    if not req.sheets:
        raise HTTPException(status_code=400, detail="시트 모형 없음")
    return Response(
        content=build_report_xlsx(req.sheets),
        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
        headers={"Content-Disposition": _disposition(req.filename)},
    )


@router.post("/api/report/csv")
def api_report_csv(req: ReportReq):
    if not req.sheets:
        raise HTTPException(status_code=400, detail="시트 모형 없음")
    body = "" + build_csv(req.sheets[0])
    name = req.filename if req.filename.endswith(".csv") else req.filename + ".csv"
    return Response(
        content=body.encode("utf-8"),
        media_type="text/csv; charset=utf-8",
        headers={"Content-Disposition": _disposition(name)},
    )


@router.post("/api/report/validate-pps")
def api_validate_pps(req: XmlReq):
    """조달청 호환규정 XSD(V1.0.5) 검증 — 위반 줄을 돌려줌."""
    from lxml import etree

    schema = etree.XMLSchema(etree.parse(str(XSD)))
    try:
        doc = etree.fromstring(req.xml.encode("utf-8"))
    except etree.XMLSyntaxError as e:
        return {"ok": False, "errors": [str(e)]}
    ok = schema.validate(doc)
    return {"ok": ok, "errors": [str(e) for e in list(schema.error_log)[:20]]}