const fs = require("fs");
const path = require("path");
const vm = require("vm");
const assert = require("assert");

const apiClientPath = path.join(__dirname, "..", "utils", "ApiClient.js");
const source =
  fs.readFileSync(apiClientPath, "utf8") + "\nglobalThis.__ApiClient = ApiClient;\n";

const context = {
  console,
  window: { CURRENT_CONFIG: {} },
  localStorage: {
    getItem() {
      return "";
    },
  },
};

vm.createContext(context);
vm.runInContext(source, context, { filename: apiClientPath });

const ApiClient = context.__ApiClient;

async function assertLegacyDataArrayFromTrendObject() {
  const rows = [
    { issue: "2026001", openCode: "1,2,3" },
    { issue: "2026002", openCode: "4,5,6" },
  ];

  let trendRequest;
  ApiClient.get = async function (url, params) {
    trendRequest = { url, params };
    return { code: 0, data: { records: rows, total: rows.length } };
  };

  ApiClient.requestWithMenu = async function () {
    throw new Error("trend response should not fall back");
  };

  const res = await ApiClient.requestLegacyLotteryResultCompat({ suoxie: "pl3" });
  assert.strictEqual(trendRequest.url, ApiClient.API.lotteryTrend);
  assert.strictEqual(trendRequest.params.code, "pl3");
  assert.strictEqual(trendRequest.params.pageSize, 100);
  assert.ok(Array.isArray(res.data), "legacy trend data should be an array");
  assert.deepStrictEqual(res.data.slice(0, 1), rows.slice(0, 1));
  assert.deepStrictEqual(res.data.records, rows);
  assert.deepStrictEqual(res.data.rows, rows);
  assert.strictEqual(res.data.total, rows.length);
}

async function assertLegacyDataArrayFromFallbackObject() {
  const rows = [{ issue: "2026003", openCode: "7,8,9" }];

  ApiClient.API.lotteryTrend = "";
  ApiClient.requestWithMenu = async function (url, data) {
    assert.strictEqual(url, "/api/web/lottery/result/list");
    assert.deepStrictEqual(data, { suoxie: "pl3" });
    return { code: 0, data: { rows, totalRow: rows.length } };
  };

  const res = await ApiClient.requestLegacyLotteryResultCompat({ suoxie: "pl3" });
  assert.ok(Array.isArray(res.data), "legacy fallback data should be an array");
  assert.deepStrictEqual(res.data.slice(0, 1), rows);
  assert.deepStrictEqual(res.data.records, rows);
  assert.deepStrictEqual(res.data.rows, rows);
  assert.strictEqual(res.data.totalRow, rows.length);
}

Promise.resolve()
  .then(assertLegacyDataArrayFromTrendObject)
  .then(assertLegacyDataArrayFromFallbackObject)
  .then(() => {
    console.log("trend compat regression passed");
  })
  .catch((error) => {
    console.error(error && error.stack ? error.stack : error);
    process.exit(1);
  });