/*** IMPORT ------------------------------------------- ***/

import { assertEquals } from "jsr:@std/assert@^1.0.0";

/*** UTILITY ------------------------------------------ ***/

import {
  createLocalStorage,
  createMemoryStorage
} from "../source/library/state/storage.ts";

/*** TESTS -------------------------------------------- ***/

Deno.test("memory storage round-trips objects", () => {
  const storage = createMemoryStorage();
  storage.set("k", { hello: "world" });
  assertEquals(storage.get<{ hello: string }>("k"), { hello: "world" });
});

Deno.test("memory storage returns null for missing keys", () => {
  const storage = createMemoryStorage();
  assertEquals(storage.get("missing"), null);
});

Deno.test("memory storage remove clears a key", () => {
  const storage = createMemoryStorage();
  storage.set("k", 42);
  storage.remove("k");
  assertEquals(storage.get("k"), null);
});

Deno.test("memory storage instances are isolated", () => {
  const a = createMemoryStorage();
  const b = createMemoryStorage();
  a.set("shared", 1);
  assertEquals(b.get("shared"), null);
});

Deno.test("local storage namespaces keys", () => {
  globalThis.localStorage.clear();

  const alpha = createLocalStorage("alpha");
  const beta = createLocalStorage("beta");

  alpha.set("shared", { tag: "a" });
  beta.set("shared", { tag: "b" });

  assertEquals(alpha.get<{ tag: string }>("shared"), { tag: "a" });
  assertEquals(beta.get<{ tag: string }>("shared"), { tag: "b" });
  assertEquals(globalThis.localStorage.getItem("alpha:shared"), JSON.stringify({ tag: "a" }));
  assertEquals(globalThis.localStorage.getItem("beta:shared"), JSON.stringify({ tag: "b" }));

  globalThis.localStorage.clear();
});

Deno.test("local storage remove respects the namespace", () => {
  globalThis.localStorage.clear();

  const alpha = createLocalStorage("alpha");
  const beta = createLocalStorage("beta");

  alpha.set("k", 1);
  beta.set("k", 2);

  alpha.remove("k");
  assertEquals(alpha.get("k"), null);
  assertEquals(beta.get<number>("k"), 2);

  globalThis.localStorage.clear();
});

Deno.test("local storage returns null on malformed JSON", () => {
  globalThis.localStorage.clear();
  globalThis.localStorage.setItem("alpha:bad", "not-json");

  const alpha = createLocalStorage("alpha");
  assertEquals(alpha.get("bad"), null);

  globalThis.localStorage.clear();
});