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

export const handler: Handlers = {
  // #37 GET /ue-modules
  async GET(request) {
    try {
      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" },
      });
    } catch (error) {
      console.error("Error fetching UE-modules:", error);
      return new Response("Failed to fetch data", { status: 500 });
    }
  },

  // #38 POST /ue-modules
  async POST(request) {
    try {
      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 },
        );
      }

      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" },
      });
    } catch (error) {
      console.error("Error creating UE-module:", error);
      return new Response("Failed to create UE-module", { status: 500 });
    }
  },
};