import { Handlers } from "$fresh/server.ts";
import { db } from "../../../../databases/db.ts";
import { ueModules } from "../../../../databases/schema.ts";
import { withRules } from "$root/defaults/withRules.ts";
import { and, eq } from "npm:drizzle-orm@0.45.2";

export const handler: Handlers = {
  // #37 GET /ue-modules
  GET: withRules(["note_read"])(async (request, _context) => {
    const url = new URL(request.url);
    const idPromo = url.searchParams.get("idPromo");
    const idUEParam = url.searchParams.get("idUE");

    const idUE = idUEParam ? parseInt(idUEParam) : null;

    if (idUEParam && isNaN(idUE!)) {
      return new Response("Paramètre idUE invalide", { status: 400 });
    }

    const result = await db.select().from(ueModules).where(
      and(
        idPromo ? eq(ueModules.idPromo, idPromo) : undefined,
        idUE ? eq(ueModules.idUE, idUE) : undefined,
      ),
    );

    return new Response(JSON.stringify(result), {
      status: 200,
      headers: { "Content-Type": "application/json" },
    });
  }),

  // #38 POST /ue-modules
  POST: withRules(["note_write"])(async (request, _context) => {
    const body = await request.json();
    const { idModule, idUE, idPromo, coeff } = body;

    if (!idModule || !idUE || !idPromo || coeff === undefined) {
      return new Response(
        "Champs 'idModule', 'idUE', 'idPromo' et 'coeff' requis",
        { status: 400 },
      );
    }

    if (typeof coeff !== "number" || coeff < 0) {
      return new Response("Champ 'coeff' doit être un nombre >= 0", {
        status: 400,
      });
    }

    const result = await db.insert(ueModules).values({
      idModule,
      idUE,
      idPromo,
      coeff,
    }).returning();

    return new Response(JSON.stringify(result[0]), {
      status: 201,
      headers: { "Content-Type": "application/json" },
    });
  }),
};