"use strict";

const test = require("node:test");
const assert = require("node:assert/strict");

test("config uses defaults when env is missing", () => {
  const previous = {
    PORT: process.env.PORT,
    STATE_FILE_PATH: process.env.STATE_FILE_PATH,
    LOG_LEVEL: process.env.LOG_LEVEL,
    APP_BASE_URL: process.env.APP_BASE_URL,
    TTS_MODEL: process.env.TTS_MODEL,
    S3_SIGNED_URL_TTL_SEC: process.env.S3_SIGNED_URL_TTL_SEC,
    X_BOT_USER_ID: process.env.X_BOT_USER_ID,
    WEBHOOK_RPM: process.env.WEBHOOK_RPM,
    POLAR_SERVER: process.env.POLAR_SERVER,
    POLAR_PRODUCT_IDS: process.env.POLAR_PRODUCT_IDS,
  };

  delete process.env.PORT;
  delete process.env.STATE_FILE_PATH;
  delete process.env.LOG_LEVEL;
  delete process.env.APP_BASE_URL;
  delete process.env.TTS_MODEL;
  delete process.env.S3_SIGNED_URL_TTL_SEC;
  delete process.env.X_BOT_USER_ID;
  delete process.env.WEBHOOK_RPM;
  delete process.env.POLAR_SERVER;
  delete process.env.POLAR_PRODUCT_IDS;

  delete require.cache[require.resolve("../src/config")];
  const { config } = require("../src/config");

  assert.equal(config.port, 3000);
  assert.equal(config.stateFilePath, "./data/state.json");
  assert.equal(config.logLevel, "info");
  assert.equal(config.appBaseUrl, "http://localhost:3000");
  assert.equal(config.ttsModel, "gpt-4o-mini-tts");
  assert.equal(config.s3SignedUrlTtlSec, 3600);
  assert.equal(config.xBotUserId, "");
  assert.equal(config.polarServer, "production");
  assert.deepEqual(config.polarProductIds, []);
  assert.equal(config.rateLimits.webhookPerMinute, 120);

  if (previous.PORT === undefined) {
    delete process.env.PORT;
  } else {
    process.env.PORT = previous.PORT;
  }

  if (previous.STATE_FILE_PATH === undefined) {
    delete process.env.STATE_FILE_PATH;
  } else {
    process.env.STATE_FILE_PATH = previous.STATE_FILE_PATH;
  }

  if (previous.LOG_LEVEL === undefined) {
    delete process.env.LOG_LEVEL;
  } else {
    process.env.LOG_LEVEL = previous.LOG_LEVEL;
  }

  if (previous.APP_BASE_URL === undefined) {
    delete process.env.APP_BASE_URL;
  } else {
    process.env.APP_BASE_URL = previous.APP_BASE_URL;
  }

  if (previous.TTS_MODEL === undefined) {
    delete process.env.TTS_MODEL;
  } else {
    process.env.TTS_MODEL = previous.TTS_MODEL;
  }

  if (previous.S3_SIGNED_URL_TTL_SEC === undefined) {
    delete process.env.S3_SIGNED_URL_TTL_SEC;
  } else {
    process.env.S3_SIGNED_URL_TTL_SEC = previous.S3_SIGNED_URL_TTL_SEC;
  }

  if (previous.X_BOT_USER_ID === undefined) {
    delete process.env.X_BOT_USER_ID;
  } else {
    process.env.X_BOT_USER_ID = previous.X_BOT_USER_ID;
  }

  if (previous.WEBHOOK_RPM === undefined) {
    delete process.env.WEBHOOK_RPM;
  } else {
    process.env.WEBHOOK_RPM = previous.WEBHOOK_RPM;
  }

  if (previous.POLAR_SERVER === undefined) {
    delete process.env.POLAR_SERVER;
  } else {
    process.env.POLAR_SERVER = previous.POLAR_SERVER;
  }

  if (previous.POLAR_PRODUCT_IDS === undefined) {
    delete process.env.POLAR_PRODUCT_IDS;
  } else {
    process.env.POLAR_PRODUCT_IDS = previous.POLAR_PRODUCT_IDS;
  }
});

test("config reads state path and numeric env overrides", () => {
  const previous = {
    PORT: process.env.PORT,
    STATE_FILE_PATH: process.env.STATE_FILE_PATH,
    LOG_LEVEL: process.env.LOG_LEVEL,
    WEBHOOK_RPM: process.env.WEBHOOK_RPM,
    APP_BASE_URL: process.env.APP_BASE_URL,
    TTS_MODEL: process.env.TTS_MODEL,
    S3_SIGNED_URL_TTL_SEC: process.env.S3_SIGNED_URL_TTL_SEC,
    X_BOT_USER_ID: process.env.X_BOT_USER_ID,
    POLAR_SERVER: process.env.POLAR_SERVER,
    POLAR_PRODUCT_IDS: process.env.POLAR_PRODUCT_IDS,
  };

  process.env.PORT = "8080";
  process.env.STATE_FILE_PATH = "/data/prod-state.json";
  process.env.LOG_LEVEL = "debug";
  process.env.APP_BASE_URL = "https://xartaudio.app";
  process.env.TTS_MODEL = "custom-tts";
  process.env.S3_SIGNED_URL_TTL_SEC = "7200";
  process.env.X_BOT_USER_ID = "bot-user-id";
  process.env.WEBHOOK_RPM = "77";
  process.env.POLAR_SERVER = "sandbox";
  process.env.POLAR_PRODUCT_IDS = "prod_1,prod_2";

  delete require.cache[require.resolve("../src/config")];
  const { config } = require("../src/config");

  assert.equal(config.port, 8080);
  assert.equal(config.stateFilePath, "/data/prod-state.json");
  assert.equal(config.logLevel, "debug");
  assert.equal(config.appBaseUrl, "https://xartaudio.app");
  assert.equal(config.ttsModel, "custom-tts");
  assert.equal(config.s3SignedUrlTtlSec, 7200);
  assert.equal(config.xBotUserId, "bot-user-id");
  assert.equal(config.polarServer, "sandbox");
  assert.deepEqual(config.polarProductIds, ["prod_1", "prod_2"]);
  assert.equal(config.rateLimits.webhookPerMinute, 77);

  if (previous.PORT === undefined) {
    delete process.env.PORT;
  } else {
    process.env.PORT = previous.PORT;
  }

  if (previous.STATE_FILE_PATH === undefined) {
    delete process.env.STATE_FILE_PATH;
  } else {
    process.env.STATE_FILE_PATH = previous.STATE_FILE_PATH;
  }
  if (previous.LOG_LEVEL === undefined) {
    delete process.env.LOG_LEVEL;
  } else {
    process.env.LOG_LEVEL = previous.LOG_LEVEL;
  }

  if (previous.APP_BASE_URL === undefined) {
    delete process.env.APP_BASE_URL;
  } else {
    process.env.APP_BASE_URL = previous.APP_BASE_URL;
  }

  if (previous.TTS_MODEL === undefined) {
    delete process.env.TTS_MODEL;
  } else {
    process.env.TTS_MODEL = previous.TTS_MODEL;
  }

  if (previous.S3_SIGNED_URL_TTL_SEC === undefined) {
    delete process.env.S3_SIGNED_URL_TTL_SEC;
  } else {
    process.env.S3_SIGNED_URL_TTL_SEC = previous.S3_SIGNED_URL_TTL_SEC;
  }

  if (previous.X_BOT_USER_ID === undefined) {
    delete process.env.X_BOT_USER_ID;
  } else {
    process.env.X_BOT_USER_ID = previous.X_BOT_USER_ID;
  }

  if (previous.WEBHOOK_RPM === undefined) {
    delete process.env.WEBHOOK_RPM;
  } else {
    process.env.WEBHOOK_RPM = previous.WEBHOOK_RPM;
  }

  if (previous.POLAR_SERVER === undefined) {
    delete process.env.POLAR_SERVER;
  } else {
    process.env.POLAR_SERVER = previous.POLAR_SERVER;
  }

  if (previous.POLAR_PRODUCT_IDS === undefined) {
    delete process.env.POLAR_PRODUCT_IDS;
  } else {
    process.env.POLAR_PRODUCT_IDS = previous.POLAR_PRODUCT_IDS;
  }
});