PolyMPR/routes/(apps)/notes/api/notes/import-xlsx.ts

// @deno-types="https://cdn.sheetjs.com/xlsx-0.20.3/package/types/index.d.ts"
import * as XLSX from "https://cdn.sheetjs.com/xlsx-0.20.3/package/xlsx.mjs";
import { Handlers } from "$fresh/server.ts";
import { db } from "../../../../../databases/db.ts";
import { notes } from "../../../../../databases/schema.ts";

export const handler: Handlers = {
  //# 44 POST /notes/import-xlsx
  async POST(request) {
    try {
      const formData = await request.formData();
      const file = formData.get("file");
      const idModule = formData.get("idModule");

      if (!file || !(file instanceof File)) {
        return new Response("Champ 'file' manquant", { status: 400 });
      }

      if (!idModule || typeof idModule !== "string") {
        return new Response("Champ 'idModule' manquant", { status: 400 });
      }

      const buffer = await file.arrayBuffer();
      const workbook = XLSX.read(buffer);
      const sheet = workbook.Sheets[workbook.SheetNames[0]];
      const rows = XLSX.utils.sheet_to_json(sheet) as {
        numEtud: number;
        note: number;
      }[];

      for (const row of rows) {
        const { numEtud, note } = row;

        if (!numEtud || note === undefined) {
          continue;
        }

        await db.insert(notes)
          .values({ numEtud, idModule, note })
          .onConflictDoUpdate({
            target: [notes.numEtud, notes.idModule],
            set: { note },
          });
      }

      return new Response(null, { status: 204 });
    } catch (error) {
      console.error("Error importing notes:", error);
      return new Response("Failed to import notes", { status: 500 });
    }
  },
};