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

export const handler: Handlers = {
  // #34 GET /ues/:idUE
  GET: withRules(["note_read"])(async (_request, context) => {
    const idUE = parseInt(context.params.idUE);

    if (isNaN(idUE)) {
      return new Response(
        JSON.stringify({ error: "Paramètre idUE invalide" }),
        { status: 400, headers: { "Content-Type": "application/json" } },
      );
    }

    const result = await db.select().from(ues).where(eq(ues.id, idUE));

    if (result.length === 0) {
      return new Response(
        JSON.stringify({ error: "Ressource introuvable" }),
        { status: 404, headers: { "Content-Type": "application/json" } },
      );
    }

    return new Response(JSON.stringify(result[0]), {
      status: 200,
      headers: { "Content-Type": "application/json" },
    });
  }),

  // #35 PUT /ues/:idUE
  PUT: withRules(["note_write"])(async (request, context) => {
    const idUE = parseInt(context.params.idUE);

    if (isNaN(idUE)) {
      return new Response(
        JSON.stringify({ error: "Paramètre idUE invalide" }),
        { status: 400, headers: { "Content-Type": "application/json" } },
      );
    }

    const body = await request.json();
    const { nom } = body;

    if (!nom) {
      return new Response("Champ 'nom' manquant", { status: 400 });
    }

    const result = await db.update(ues).set({ nom }).where(eq(ues.id, idUE))
      .returning();

    if (result.length === 0) {
      return new Response(
        JSON.stringify({ error: "Ressource introuvable" }),
        { status: 404, headers: { "Content-Type": "application/json" } },
      );
    }

    return new Response(JSON.stringify(result[0]), {
      status: 200,
      headers: { "Content-Type": "application/json" },
    });
  }),

  // #36 DELETE /ues/:idUE
  DELETE: withRules(["note_write"])(async (_request, context) => {
    const idUE = parseInt(context.params.idUE);

    if (isNaN(idUE)) {
      return new Response(
        JSON.stringify({ error: "Paramètre idUE invalide" }),
        { status: 400, headers: { "Content-Type": "application/json" } },
      );
    }

    const result = await db.delete(ues).where(eq(ues.id, idUE)).returning();

    if (result.length === 0) {
      return new Response(
        JSON.stringify({ error: "Ressource introuvable" }),
        { status: 404, headers: { "Content-Type": "application/json" } },
      );
    }

    return new Response(null, { status: 204 });
  }),
};