/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";

function getVisibleChildrenIds(menuElem) {
  return Array.from(menuElem.children)
    .filter(elem => !elem.hidden)
    .map(elem => elem.id || elem.tagName);
}

function checkIsDefaultMenuItemVisible(visibleMenuItemIds) {
  // In this whole test file, we open a menu on a link. Assume that all
  // default menu items are shown if one link-specific menu item is shown.
  ok(
    visibleMenuItemIds.includes("browserContext-copylink"),
    `The default 'Copy Link Location' menu item should be in ${visibleMenuItemIds}.`
  );
}

// Tests that the context of an extension menu can be changed to:
// - tab
add_task(async function overrideContext_with_context() {
  // Background script of the main test extension and the auxiliary other extension.
  function background() {
    const HTTP_URL = "https://example.com/?SomeTab";
    browser.test.onMessage.addListener(async (msg, tabId) => {
      browser.test.assertEq(
        "testTabAccess",
        msg,
        `Expected message in ${browser.runtime.id}`
      );
      let tab = await browser.tabs.get(tabId);
      if (!tab.url) {
        // tabs or activeTab not active.
        browser.test.sendMessage("testTabAccessDone", "tab_no_url");
        return;
      }
      try {
        let [url] = await browser.tabs.executeScript(tabId, {
          code: "document.URL",
        });
        browser.test.assertEq(
          HTTP_URL,
          url,
          "Expected successful executeScript"
        );
        browser.test.sendMessage("testTabAccessDone", "executeScript_ok");
        return;
      } catch (e) {
        browser.test.assertEq(
          "Missing host permission for the tab",
          e.message,
          "Expected error message"
        );
        browser.test.sendMessage("testTabAccessDone", "executeScript_failed");
      }
    });
    browser.menus.onShown.addListener((info, tab) => {
      browser.test.assertEq(
        "tab",
        info.viewType,
        "Expected viewType at onShown"
      );
      browser.test.assertEq(
        undefined,
        info.linkUrl,
        "Expected linkUrl at onShown"
      );
      browser.test.assertEq(
        undefined,
        info.srckUrl,
        "Expected srcUrl at onShown"
      );
      browser.test.sendMessage("onShown", {
        menuIds: info.menuIds.sort(),
        contexts: info.contexts,
        bookmarkId: info.bookmarkId,
        pageUrl: info.pageUrl,
        frameUrl: info.frameUrl,
        tabId: tab && tab.id,
      });
    });
    browser.menus.onClicked.addListener((info, tab) => {
      browser.test.assertEq(
        "tab",
        info.viewType,
        "Expected viewType at onClicked"
      );
      browser.test.assertEq(
        undefined,
        info.linkUrl,
        "Expected linkUrl at onClicked"
      );
      browser.test.assertEq(
        undefined,
        info.srckUrl,
        "Expected srcUrl at onClicked"
      );
      browser.test.sendMessage("onClicked", {
        menuItemId: info.menuItemId,
        bookmarkId: info.bookmarkId,
        pageUrl: info.pageUrl,
        frameUrl: info.frameUrl,
        tabId: tab && tab.id,
      });
    });

    // Minimal properties to define menu items for a specific context.
    browser.menus.create({
      id: "tab_context",
      title: "tab_context",
      contexts: ["tab"],
    });

    // documentUrlPatterns in the tab context applies to the tab's URL.
    browser.menus.create({
      id: "tab_context_http",
      title: "tab_context_http",
      contexts: ["tab"],
      documentUrlPatterns: [HTTP_URL],
    });
    browser.menus.create({
      id: "tab_context_moz_unexpected",
      title: "tab_context_moz",
      contexts: ["tab"],
      documentUrlPatterns: ["moz-extension://*/tab.html"],
    });
    // When viewTypes is present, the document's URL is matched instead.
    browser.menus.create({
      id: "tab_context_viewType_http_unexpected",
      title: "tab_context_viewType_http",
      contexts: ["tab"],
      viewTypes: ["tab"],
      documentUrlPatterns: [HTTP_URL],
    });
    browser.menus.create({
      id: "tab_context_viewType_moz",
      title: "tab_context_viewType_moz",
      contexts: ["tab"],
      viewTypes: ["tab"],
      documentUrlPatterns: ["moz-extension://*/tab.html"],
    });

    browser.menus.create({ id: "link_context", title: "link_context" }, () => {
      browser.test.sendMessage("menu_items_registered");
    });

    if (browser.runtime.id === "@menu-test-extension") {
      browser.tabs.create({ url: "tab.html" });
    }
  }

  let extension = ExtensionTestUtils.loadExtension({
    manifest: {
      applications: { gecko: { id: "@menu-test-extension" } },
      permissions: ["menus", "menus.overrideContext", "tabs"],
    },
    files: {
      "tab.html": `
        <!DOCTYPE html><meta charset="utf-8">
        <a href="http://example.com/">Link</a>
        <script src="tab.js"></script>
      `,
      "tab.js": async () => {
        let [tab] = await browser.tabs.query({
          url: "https://example.com/?SomeTab",
        });
        let testCases = [
          {
            context: "tab",
            tabId: tab.id,
          },
          {
            context: "tab",
            tabId: tab.id,
          },
          {
            context: "tab",
            tabId: 123456789, // Some invalid tabId.
          },
        ];

        // eslint-disable-next-line mozilla/balanced-listeners
        document.addEventListener("contextmenu", () => {
          browser.menus.overrideContext(testCases.shift());
          browser.test.sendMessage("oncontextmenu_in_dom");
        });

        browser.test.sendMessage("setup_ready", {
          tabId: tab.id,
          httpUrl: tab.url,
          extensionUrl: document.URL,
        });
      },
    },
    background,
  });

  let { browser } = window.openContentTab("https://example.com/?SomeTab");
  await awaitBrowserLoaded(browser);

  let otherExtension = ExtensionTestUtils.loadExtension({
    manifest: {
      applications: { gecko: { id: "@other-test-extension" } },
      permissions: ["menus", "activeTab"],
    },
    background,
  });
  await otherExtension.startup();
  await otherExtension.awaitMessage("menu_items_registered");

  await extension.startup();
  await extension.awaitMessage("menu_items_registered");

  let { tabId, httpUrl, extensionUrl } = await extension.awaitMessage(
    "setup_ready"
  );
  info(`Set up test with tabId=${tabId}.`);

  {
    // Test case 1: context=tab
    let menu = await openContextMenu("a");
    await extension.awaitMessage("oncontextmenu_in_dom");
    for (let ext of [extension, otherExtension]) {
      info(`Testing menu from ${ext.id} after changing context to tab`);
      Assert.deepEqual(
        await ext.awaitMessage("onShown"),
        {
          menuIds: [
            "tab_context",
            "tab_context_http",
            "tab_context_viewType_moz",
          ],
          contexts: ["tab"],
          bookmarkId: undefined,
          pageUrl: undefined, // because extension has no host permissions.
          frameUrl: extensionUrl,
          tabId,
        },
        "Expected onShown details after changing context to tab"
      );
    }
    let topLevels = menu.getElementsByAttribute("ext-type", "top-level-menu");
    is(topLevels.length, 1, "Expected top-level menu for otherExtension");

    Assert.deepEqual(
      getVisibleChildrenIds(menu),
      [
        `${makeWidgetId(extension.id)}-menuitem-_tab_context`,
        `${makeWidgetId(extension.id)}-menuitem-_tab_context_http`,
        `${makeWidgetId(extension.id)}-menuitem-_tab_context_viewType_moz`,
        `menuseparator`,
        topLevels[0].id,
      ],
      "Expected menu items after changing context to tab"
    );

    let submenu = await openSubmenu(topLevels[0]);
    is(submenu, topLevels[0].menupopup, "Correct submenu opened");

    Assert.deepEqual(
      getVisibleChildrenIds(submenu),
      [
        `${makeWidgetId(otherExtension.id)}-menuitem-_tab_context`,
        `${makeWidgetId(otherExtension.id)}-menuitem-_tab_context_http`,
        `${makeWidgetId(otherExtension.id)}-menuitem-_tab_context_viewType_moz`,
      ],
      "Expected menu items in submenu after changing context to tab"
    );

    extension.sendMessage("testTabAccess", tabId);
    is(
      await extension.awaitMessage("testTabAccessDone"),
      "executeScript_failed",
      "executeScript should fail due to the lack of permissions."
    );

    otherExtension.sendMessage("testTabAccess", tabId);
    is(
      await otherExtension.awaitMessage("testTabAccessDone"),
      "tab_no_url",
      "Other extension should not have activeTab permissions yet."
    );

    // Click on the menu item of the other extension to unlock host permissions.
    let menuItems = menu.getElementsByAttribute("label", "tab_context");
    is(
      menuItems.length,
      2,
      "There are two menu items with label 'tab_context'"
    );
    await closeExtensionContextMenu(menuItems[1]);

    Assert.deepEqual(
      await otherExtension.awaitMessage("onClicked"),
      {
        menuItemId: "tab_context",
        bookmarkId: undefined,
        pageUrl: httpUrl,
        frameUrl: extensionUrl,
        tabId,
      },
      "Expected onClicked details after changing context to tab"
    );

    extension.sendMessage("testTabAccess", tabId);
    is(
      await extension.awaitMessage("testTabAccessDone"),
      "executeScript_failed",
      "executeScript of extension that created the menu should still fail."
    );

    otherExtension.sendMessage("testTabAccess", tabId);
    is(
      await otherExtension.awaitMessage("testTabAccessDone"),
      "executeScript_ok",
      "Other extension should have activeTab permissions."
    );
  }

  {
    // Test case 2: context=tab, click on menu item of extension..
    let menu = await openContextMenu("a");
    await extension.awaitMessage("oncontextmenu_in_dom");

    // The previous test has already verified the visible menu items,
    // so we skip checking the onShown result and only test clicking.
    await extension.awaitMessage("onShown");
    await otherExtension.awaitMessage("onShown");
    let menuItems = menu.getElementsByAttribute("label", "tab_context");
    is(
      menuItems.length,
      2,
      "There are two menu items with label 'tab_context'"
    );
    await closeExtensionContextMenu(menuItems[0]);

    Assert.deepEqual(
      await extension.awaitMessage("onClicked"),
      {
        menuItemId: "tab_context",
        bookmarkId: undefined,
        pageUrl: httpUrl,
        frameUrl: extensionUrl,
        tabId,
      },
      "Expected onClicked details after changing context to tab"
    );

    extension.sendMessage("testTabAccess", tabId);
    is(
      await extension.awaitMessage("testTabAccessDone"),
      "executeScript_failed",
      "activeTab permission should not be available to the extension that created the menu."
    );
  }

  {
    // Test case 4: context=tab, invalid tabId.
    let menu = await openContextMenu("a");
    await extension.awaitMessage("oncontextmenu_in_dom");
    // When an invalid tabId is used, all extension menu logic is skipped and
    // the default menu is shown.
    checkIsDefaultMenuItemVisible(getVisibleChildrenIds(menu));
    await closeContextMenu(menu);
  }

  await extension.unload();
  await otherExtension.unload();

  let tabmail = document.getElementById("tabmail");
  tabmail.closeTab(tabmail.currentTabInfo);
  tabmail.closeTab(tabmail.currentTabInfo);
});