import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";
import test from "node:test";

process.env.APP_MODE = "client";
process.env.DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "vpn-proxy-test-"));
process.env.SING_BOX_CACHE = path.join(process.env.DATA_DIR, "cache.db");

const { buildGatewayConfig } = await import(
  `../../src/server/singbox.js?client-mode=${Date.now()}`
);

const subscriptionConfig = {
  outbounds: [
    {
      type: "vless",
      tag: "test-vpn",
      server: "vpn.example.test",
      server_port: 443,
      uuid: "00000000-0000-4000-8000-000000000000",
      tls: { enabled: true },
    },
  ],
  customRules: [],
};

test("client mode exposes only the local mixed proxy inbound", () => {
  const config = buildGatewayConfig(subscriptionConfig, "test-vpn");

  assert.deepEqual(
    config.inbounds.map((inbound) => inbound.tag),
    ["mixed-in"],
  );
  assert.equal(config.inbounds[0].type, "mixed");
  assert.equal(config.inbounds[0].listen_port, 8080);
});

test("client mode routes mixed proxy fallback to the selected VPN", () => {
  const config = buildGatewayConfig(subscriptionConfig, "test-vpn");

  assert.deepEqual(config.route.rule_set, []);
  assert.deepEqual(config.route.rules, [
    { inbound: ["mixed-in"], outbound: "test-vpn" },
  ]);
});