import test from "node:test";
import assert from "node:assert/strict";
import { validateChatInput, isOwnedSession } from "../src/routes/chatValidation.js";

test("accepts a valid chat request", () => {
  assert.deepEqual(validateChatInput({ text: "hello", grade: "Grade 10", subject: "math" }), { ok: true });
});

test("rejects invalid metadata and oversized messages", () => {
  assert.equal(validateChatInput({ text: "hello", grade: "invalid" }).error, "Invalid grade");
  assert.equal(validateChatInput({ text: "hello", subject: "invalid" }).error, "Invalid subject");
  assert.equal(validateChatInput({ text: "" }).error, "Message text is required");
  assert.equal(validateChatInput({ text: "x".repeat(10001) }).error, "Message too long (max 10000 characters)");
});

test("only the owning user can access a session", () => {
  assert.equal(isOwnedSession({ user_id: "user-a" }, "user-a"), true);
  assert.equal(isOwnedSession({ user_id: "user-a" }, "user-b"), false);
  assert.equal(isOwnedSession(null, "user-a"), false);
});