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

export const handler: Handlers = {
  // #42 GET /notes
  GET: withRules(["note_read", "own_note"])(async (request, _context) => {
    const url = new URL(request.url);
    const numEtudParam = url.searchParams.get("numEtud");
    const idModule = url.searchParams.get("idModule");

    let query = db.select().from(notes).$dynamic();

    if (numEtudParam) {
      const numEtud = parseInt(numEtudParam);
      if (isNaN(numEtud)) {
        return new Response("Paramètre numEtud invalide", { status: 400 });
      }
      query = query.where(eq(notes.numEtud, numEtud));
    }

    if (idModule) {
      query = query.where(eq(notes.idModule, idModule));
    }

    const result = await query;

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

  // #43 POST /notes
  POST: withRules(["note_write", "own_teaching_note"])(
    async (request, _context) => {
      const body = await request.json();
      const { note, numEtud, idModule } = body;

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

      if (typeof note !== "number" || note < 0 || note > 20) {
        return new Response("Champ 'note' doit être un nombre entre 0 et 20", {
          status: 400,
        });
      }

      const result = await db.insert(notes).values({ note, numEtud, idModule })
        .returning();

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