import { FreshContext, Handlers } from "$fresh/server.ts";
import { db } from "$root/databases/db.ts";
import { ajustements } from "$root/databases/schema.ts";
import { AuthenticatedState } from "$root/defaults/interfaces.ts";
import { eq } from "npm:drizzle-orm@0.45.2";

const NOT_FOUND = new Response(
  JSON.stringify({ error: "Ajustement introuvable" }),
  { status: 404, headers: { "content-type": "application/json" } },
);

const FORBIDDEN = new Response(null, { status: 403 });

export const handler: Handlers<null, AuthenticatedState> = {
  // #50 GET /ajustements/{numEtud}/{idUE}
  async GET(
    _request: Request,
    context: FreshContext<AuthenticatedState>,
  ): Promise<Response> {
    if (context.state.session.eduPersonPrimaryAffiliation !== "employee") {
      return FORBIDDEN;
    }

    const numEtud = Number(context.params.numEtud);
    const idUE = Number(context.params.idUE);

    if (isNaN(numEtud) || isNaN(idUE)) {
      return new Response("Paramètres invalides", { status: 400 });
    }

    const ajustement = await db
      .select()
      .from(ajustements)
      .where(eq(ajustements.numEtud, numEtud), eq(ajustements.idUE, idUE))
      .then((rows) => rows[0] ?? null);

    if (!ajustement) return NOT_FOUND;

    return new Response(JSON.stringify(ajustement), {
      headers: { "content-type": "application/json" },
    });
  },
};