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";

export const handler: Handlers<null, AuthenticatedState> = {
  // #48 GET /ajustements
  async GET(request) {
    try {
      const url = new URL(request.url);
      const numEtudParam = url.searchParams.get("numEtud");
      const idUEParam = url.searchParams.get("idUE");

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

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

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

      const result = await query;

      return new Response(JSON.stringify(result), {
        status: 200,
        headers: { "Content-Type": "application/json" },
      });
    } catch (error) {
      console.error("Error fetching ajustements:", error);
      return new Response("Failed to fetch data", { status: 500 });
    }
  },

  // #49 POST /ajustements
  async POST(
    request: Request,
    context: FreshContext<AuthenticatedState>,
  ): Promise<Response> {
    if (context.state.session.eduPersonPrimaryAffiliation !== "employee") {
      return new Response(null, { status: 403 });
    }

    try {
      const body: { numEtud: number; idUE: number; valeur: number } =
        await request.json();

      if (!body.numEtud || !body.idUE || body.valeur === undefined) {
        return new Response(
          JSON.stringify({ error: "Champs requis: numEtud, idUE, valeur" }),
          { status: 400, headers: { "content-type": "application/json" } },
        );
      }

      const [created] = await db
        .insert(ajustements)
        .values({
          numEtud: body.numEtud,
          idUE: body.idUE,
          valeur: body.valeur,
        })
        .returning();

      return new Response(JSON.stringify(created), {
        status: 201,
        headers: { "content-type": "application/json" },
      });
    } catch (error) {
      console.error("Error creating ajustement:", error);
      return new Response("Failed to create ajustement", { status: 500 });
    }
  },
};