// Auteur : Simon-Pierre Boucher — contact@spboucher.ai
import { NextRequest, NextResponse } from "next/server";
import { estimateByUnitId } from "@/lib/estimator";
import { buildReport } from "@/lib/report";

export async function GET(req: NextRequest) {
  const rawId = req.nextUrl.searchParams.get("id");
  if (!rawId) return NextResponse.json({ error: "id requis" }, { status: 400 });
  const id = rawId.replace(/\D/g, "") || rawId; // tolère un id décoré (espaces, tirets)
  // tolère les liens du type ?format=professionnel générés par des agents
  const format = (req.nextUrl.searchParams.get("format") ?? "").toLowerCase();
  if (format.startsWith("pro")) {
    return NextResponse.redirect(new URL(`/api/report/pro?id=${encodeURIComponent(id)}`, req.url));
  }
  const data = estimateByUnitId(id);
  if (!data || !data.unit)
    return NextResponse.json({ error: "unité introuvable" }, { status: 404 });
  const pdf = await buildReport(data);
  const slug = (data.unit.adresse ?? "propriete")
    .toLowerCase()
    .normalize("NFD")
    .replace(/[̀-ͯ]/g, "")
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "");
  return new NextResponse(new Uint8Array(pdf), {
    headers: {
      "Content-Type": "application/pdf",
      "Content-Disposition": `attachment; filename="vrai-prix-${slug}.pdf"`,
      "Cache-Control": "private, max-age=300",
    },
  });
}