import fs from "node:fs/promises";
import path from "node:path";
import { describe, expect, it, vi } from "vitest";
import { withTempHome } from "./test-helpers.js";

describe("config pruning defaults", () => {
  it("defaults contextPruning mode to adaptive", async () => {
    await withTempHome(async (home) => {
      const configDir = path.join(home, ".clawdbot");
      await fs.mkdir(configDir, { recursive: true });
      await fs.writeFile(
        path.join(configDir, "clawdbot.json"),
        JSON.stringify({ agents: { defaults: {} } }, null, 2),
        "utf-8",
      );

      vi.resetModules();
      const { loadConfig } = await import("./config.js");
      const cfg = loadConfig();

      expect(cfg.agents?.defaults?.contextPruning?.mode).toBe("adaptive");
    });
  });

  it("does not override explicit contextPruning mode", async () => {
    await withTempHome(async (home) => {
      const configDir = path.join(home, ".clawdbot");
      await fs.mkdir(configDir, { recursive: true });
      await fs.writeFile(
        path.join(configDir, "clawdbot.json"),
        JSON.stringify({ agents: { defaults: { contextPruning: { mode: "off" } } } }, null, 2),
        "utf-8",
      );

      vi.resetModules();
      const { loadConfig } = await import("./config.js");
      const cfg = loadConfig();

      expect(cfg.agents?.defaults?.contextPruning?.mode).toBe("off");
    });
  });
});