const assert = require("node:assert/strict");
const path = require("node:path");
const vm = require("node:vm");
const { loadApplication, composeScript } = require("./application.cjs");

const root = path.resolve(__dirname, "../..");
const plain = (value) => JSON.parse(JSON.stringify(value));
const response = (body, status = 200) => new Response(JSON.stringify(body), {
  status, headers: { "Content-Type": "application/json" }
});
const unexpectedFetch = async () => { throw new Error("Unexpected network request in isolated test"); };

function clock() {
  let now = Date.UTC(2026, 8, 16, 12);
  class ClockDate extends Date {
    constructor(...args) { super(...(args.length ? args : [now])); }
    static now() { return now; }
  }
  return { Date: ClockDate, advance: (ms) => { now += ms; } };
}

function loadContent({ fetch = unexpectedFetch, storage = new Map(), xsrf = null } = {}) {
  const refreshes = [];
  const context = {
    fetch, testXsrf: xsrf, refreshes,
    document: { querySelector: () => ({ value: "Current Quarter" }) },
    localStorage: {
      getItem: key => storage.get(key) ?? null,
      setItem: (key, value) => storage.set(key, value)
    },
    Date, Intl, URL
  };
  const app = loadApplication("content", context);
  app.debugContentView.renderDebugPanel = () => {};
  if (xsrf) app.authXsrfContent.getXsrfToken = xsrf;
  app.platformContentMessages.refreshXsrfCookie = async () => { refreshes.push(true); return { refreshed: true }; };
  return {
    ...app.opportunitiesFiscalPeriods, ...app.fusionOpportunities, ...app.authTokenRelay,
    ...app.authSalesCommon, ...app.preferencesStorage, ...app.opportunitiesFilters,
    ...app.opportunitiesFormatters, ...app.contentTheme, ...app.debugState,
    setVersion: value => { app.opportunitiesQueryState.periodRequestVersion = value; },
    setTypes: values => { app.preferencesState.selectedOpportunityTypeValues = new Set(values); },
    setTable: (items, sortKey = "", sortDirection = "ascending") => {
      app.opportunitiesTableState.opportunitiesTableState = { items, sortKey, sortDirection };
      app.opportunitiesFilters.resetCustomerFilter(items);
      app.opportunitiesFilters.resetOwnerFilter(items);
    },
    filters: () => {
      const state = app.opportunitiesFilterState;
      return {
        stages: Array.from(state.selectedStages), statuses: Array.from(state.selectedStatuses),
        customerKeys: Array.from(state.selectedCustomerKeys), ownerKeys: Array.from(state.selectedOwnerKeys),
        customerSearch: state.customerSearch, ownerSearch: state.ownerSearch, tableSearch: state.tableSearch
      };
    },
    storage, refreshes
  };
}

function loadBackground({ family = "chrome", fetch = unexpectedFetch, storage = {}, sessionStorage = {}, cookies = () => [], storageError = false, ruleError = false, messageTimeout = 2000 } = {}) {
  const time = clock();
  const listeners = [];
  const progress = [];
  const requestDebug = [];
  const tabs = [];
  const removedTabs = [];
  const cookieQueries = [];
  const headerListeners = [];
  const responseHeaderListeners = [];
  const headerRules = [];
  const api = { runtime: { onMessage: { addListener: fn => listeners.push(fn) },
    getURL: path => `${family === "firefox" ? "moz" : "chrome"}-extension://synthetic-extension${path}` },
    webRequest: {
      onBeforeSendHeaders: { addListener: (listener, filter, options) => headerListeners.push({ listener, filter: plain(filter), options: plain(options) }) },
      onHeadersReceived: { addListener: (listener, filter, options) => responseHeaderListeners.push({ listener, filter: plain(filter), options: plain(options) }) }
    },
    declarativeNetRequest: { updateSessionRules: async rules => { if (ruleError) throw new Error("Rule permission denied"); headerRules.push(plain(rules)); } }
  };
  const readCookies = details => { cookieQueries.push(plain(details)); return cookies(details); };
  const getStored = key => ({ [key]: storage[key] === undefined ? undefined : plain(storage[key]) });
  const store = value => Object.assign(storage, plain(value));
  const openTab = details => { tabs.push(plain(details)); return { id: 91 }; };
  const send = (tabId, message, options) => {
    const events = message.type === "opportunitiesExtension.opptyProductsRequestDebug" ? requestDebug : progress;
    events.push({ tabId, message: plain(message), options: plain(options || {}) });
  };
  if (family === "firefox") {
    api.runtime.getBrowserInfo = async () => ({ name: "Firefox" });
    api.storage = { local: {
      get: async key => { if (storageError) throw new Error("Storage unavailable"); return getStored(key); },
      set: async value => { if (storageError) throw new Error("Storage unavailable"); store(value); }
    } };
    api.tabs = { create: async details => openTab(details), remove: async id => removedTabs.push(id),
      sendMessage: async (tabId, message, options) => send(tabId, message, options) };
    api.cookies = {
      get: async details => readCookies(details).find(cookie => cookie.name === details.name) || null,
      getAll: async details => readCookies(details),
      getAllCookieStores: async () => [{ id: "test-store" }]
    };
  } else {
    const withStorageError = callback => {
      api.runtime.lastError = storageError ? { message: "Storage unavailable" } : undefined;
      try { callback(); } finally { delete api.runtime.lastError; }
    };
    api.storage = { local: {
      get(key, callback) { withStorageError(() => callback(getStored(key))); },
      set(value, callback) { withStorageError(() => { if (!storageError) store(value); callback(); }); }
    } };
    api.tabs = {
      create(details, callback) { callback(openTab(details)); },
      remove(id, callback) { removedTabs.push(id); callback(); },
      sendMessage(tabId, message, options, callback) {
        if (typeof options === "function") { callback = options; options = undefined; }
        send(tabId, message, options); callback();
      }
    };
    api.cookies = {
      get(details, callback) { callback(readCookies(details).find(cookie => cookie.name === details.name) || null); },
      getAll(details, callback) { callback(readCookies(details)); },
      getAllCookieStores(callback) { callback([{ id: "test-store" }]); }
    };
  }
  api.storage.session = {
    get: async key => ({ [key]: sessionStorage[key] === undefined ? undefined : plain(sessionStorage[key]) }),
    set: async value => Object.assign(sessionStorage, plain(value))
  };
  const context = {
    [family === "firefox" ? "browser" : "chrome"]: api,
    fetch, URL, Date: time.Date,
    setTimeout: (callback, ms) => { time.advance(ms); return setTimeout(callback, 0); }
  };
  new vm.Script(composeScript("background"), { filename: "background.js" })
    .runInNewContext(context);
  assert.equal(listeners.length, 1, "Background must register one listener synchronously");
  const sender = { id: "synthetic-extension", url: "https://eeho.fa.us2.oraclecloud.com/fscmUI/faces/FuseWelcome",
    tab: { id: 7, windowId: 3, cookieStoreId: "test-store" }, frameId: 2 };
  function dispatch(message) {
    return new Promise((resolve, reject) => {
      let replies = 0;
      const timer = setTimeout(() => reject(new Error("Message did not receive a response")), messageTimeout);
      const pending = listeners[0](message, sender, result => {
        clearTimeout(timer);
        assert.equal(++replies, 1, "Message must receive exactly one response");
        resolve(plain(result));
      });
      if (pending !== true) { clearTimeout(timer); reject(new Error("Expected asynchronous response contract")); }
    });
  }
  return { dispatch, listener: listeners[0], progress, requestDebug, tabs, removedTabs, cookieQueries, storage, sessionStorage, headerRules, headerListeners, responseHeaderListeners, advance: time.advance };
}

module.exports = { root, plain, response, loadContent, loadBackground };