import { describe, expect, it } from "vitest";
import * as harness from "../src/index.js";

describe("redactAndLimit", () => {
  it("recursively redacts sensitive keys without mutating the source", () => {
    const redactAndLimit = Reflect.get(harness, "redactAndLimit") as
      | ((value: unknown, maxBytes: number) => unknown)
      | undefined;
    expect(redactAndLimit, "redactAndLimit must be exported").toBeDefined();
    const source = {
      apiKey: "sk-secret",
      nested: [{ Authorization: "Bearer secret" }, { refresh_token: "refresh" }],
      safe: "visible",
    };

    expect(redactAndLimit!(source, 10_000)).toEqual({
      apiKey: "[REDACTED]",
      nested: [{ Authorization: "[REDACTED]" }, { refresh_token: "[REDACTED]" }],
      safe: "visible",
    });
    expect(source.apiKey).toBe("sk-secret");
  });

  it("replaces oversized serialized values with a typed byte summary", () => {
    const redactAndLimit = Reflect.get(harness, "redactAndLimit") as
      | ((value: unknown, maxBytes: number) => unknown)
      | undefined;
    const result = redactAndLimit?.({ text: "中".repeat(100) }, 32);

    expect(result).toMatchObject({
      type: "truncated",
      maxBytes: 32,
    });
    expect(Reflect.get(result as object, "byteLength")).toBeGreaterThan(32);
    expect(JSON.stringify(result)).not.toContain("中");
  });
});