/* 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";

const { Troubleshoot } = ChromeUtils.importESModule(
  "resource://gre/modules/Troubleshoot.sys.mjs"
);
const { ResetProfile } = ChromeUtils.importESModule(
  "resource://gre/modules/ResetProfile.sys.mjs"
);
const { AppConstants } = ChromeUtils.importESModule(
  "resource://gre/modules/AppConstants.sys.mjs"
);

ChromeUtils.defineESModuleGetters(this, {
  DownloadUtils: "resource://gre/modules/DownloadUtils.sys.mjs",
  PlacesDBUtils: "resource://gre/modules/PlacesDBUtils.sys.mjs",
  ProcessType: "resource://gre/modules/ProcessType.sys.mjs",
});

window.addEventListener("load", function onload() {
  try {
    window.removeEventListener("load", onload);
    Troubleshoot.snapshot().then(async snapshot => {
      for (let prop in snapshotFormatters) {
        try {
          await snapshotFormatters[prop](snapshot[prop]);
        } catch (e) {
          console.error(
            "stack of snapshot error for about:support: ",
            e,
            ": ",
            e.stack
          );
        }
      }
      if (location.hash) {
        scrollToSection();
      }
    }, console.error);
    populateActionBox();
    setupEventListeners();

    if (
      AppConstants.MOZ_UPDATER &&
      Services.sysinfo.getProperty("isPackagedApp")
    ) {
      $("update-dir-row").hidden = true;
      $("update-history-row").hidden = true;
    }
  } catch (e) {
    console.error("stack of load error for about:support: ", e, ": ", e.stack);
  }
});

function prefsTable(data) {
  return sortedArrayFromObject(data).map(function ([name, value]) {
    return $.new("tr", [
      $.new("td", name, "pref-name"),
      // Very long preference values can cause users problems when they
      // copy and paste them into some text editors.  Long values generally
      // aren't useful anyway, so truncate them to a reasonable length.
      $.new("td", String(value).substr(0, 120), "pref-value"),
    ]);
  });
}

// Fluent uses lisp-case IDs so this converts
// the SentenceCase info IDs to lisp-case.
const FLUENT_IDENT_REGEX = /^[a-zA-Z][a-zA-Z0-9_-]*$/;
function toFluentID(str) {
  if (!FLUENT_IDENT_REGEX.test(str)) {
    return null;
  }
  return str
    .toString()
    .replace(/([a-z0-9])([A-Z])/g, "$1-$2")
    .toLowerCase();
}

// Each property in this object corresponds to a property in Troubleshoot.sys.mjs's
// snapshot data.  Each function is passed its property's corresponding data,
// and it's the function's job to update the page with it.
var snapshotFormatters = {
  async application(data) {
    $("application-box").textContent = data.name;
    $("useragent-box").textContent = data.userAgent;
    $("os-box").textContent = data.osVersion;
    if (data.osTheme) {
      $("os-theme-box").textContent = data.osTheme;
    } else {
      $("os-theme-row").hidden = true;
    }
    if (AppConstants.platform == "macosx") {
      $("rosetta-box").textContent = data.rosetta;
    }
    if (AppConstants.platform == "win") {
      const translatedList = await Promise.all(
        data.pointingDevices.map(deviceName => {
          return document.l10n.formatValue(deviceName);
        })
      );

      const formatter = new Intl.ListFormat();

      $("pointing-devices-box").textContent = formatter.format(translatedList);
    }
    $("binary-box").textContent = Services.dirsvc.get(
      "XREExeF",
      Ci.nsIFile
    ).path;
    $("supportLink").href = data.supportURL;
    let version = AppConstants.MOZ_APP_VERSION_DISPLAY;
    if (data.vendor) {
      version += " (" + data.vendor + ")";
    }
    $("version-box").textContent = version;
    $("buildid-box").textContent = data.buildID;
    $("distributionid-box").textContent = data.distributionID;
    if (data.updateChannel) {
      $("updatechannel-box").textContent = data.updateChannel;
    }
    if (AppConstants.MOZ_UPDATER && AppConstants.platform != "android") {
      $("update-dir-box").textContent = Services.dirsvc.get(
        "UpdRootD",
        Ci.nsIFile
      ).path;
    }
    if (AppConstants.platform != "android") {
      $("profile-dir-box").textContent = Services.dirsvc.get(
        "ProfD",
        Ci.nsIFile
      ).path;
    }

    try {
      let launcherStatusTextId = "launcher-process-status-unknown";
      switch (data.launcherProcessState) {
        case 0:
        case 1:
        case 2:
          launcherStatusTextId =
            "launcher-process-status-" + data.launcherProcessState;
          break;
      }

      document.l10n.setAttributes(
        $("launcher-process-box"),
        launcherStatusTextId
      );
    } catch (e) {}

    const STATUS_STRINGS = {
      disabledByE10sEnv: "fission-status-disabled-by-e10s-env",
      enabledByEnv: "fission-status-enabled-by-env",
      disabledByEnv: "fission-status-disabled-by-env",
      enabledByDefault: "fission-status-enabled-by-default",
      disabledByDefault: "fission-status-disabled-by-default",
      enabledByUserPref: "fission-status-enabled-by-user-pref",
      disabledByUserPref: "fission-status-disabled-by-user-pref",
      disabledByE10sOther: "fission-status-disabled-by-e10s-other",
    };

    let statusTextId = STATUS_STRINGS[data.fissionDecisionStatus];

    document.l10n.setAttributes(
      $("multiprocess-box-process-count"),
      "multi-process-windows",
      {
        remoteWindows: data.numRemoteWindows,
        totalWindows: data.numTotalWindows,
      }
    );
    document.l10n.setAttributes(
      $("fission-box-process-count"),
      "fission-windows",
      {
        fissionWindows: data.numFissionWindows,
        totalWindows: data.numTotalWindows,
      }
    );
    document.l10n.setAttributes($("fission-box-status"), statusTextId);

    if (Services.policies) {
      let policiesStrId = "";
      let aboutPolicies = "about:policies";
      switch (data.policiesStatus) {
        case Services.policies.INACTIVE:
          policiesStrId = "policies-inactive";
          break;

        case Services.policies.ACTIVE:
          policiesStrId = "policies-active";
          aboutPolicies += "#active";
          break;

        default:
          policiesStrId = "policies-error";
          aboutPolicies += "#errors";
          break;
      }

      if (data.policiesStatus != Services.policies.INACTIVE) {
        let activePolicies = $.new("a", null, null, {
          href: aboutPolicies,
        });
        document.l10n.setAttributes(activePolicies, policiesStrId);
        $("policies-status").appendChild(activePolicies);
      } else {
        document.l10n.setAttributes($("policies-status"), policiesStrId);
      }
    } else {
      $("policies-status-row").hidden = true;
    }

    let keyLocationServiceGoogleFound = data.keyLocationServiceGoogleFound
      ? "found"
      : "missing";
    document.l10n.setAttributes(
      $("key-location-service-google-box"),
      keyLocationServiceGoogleFound
    );

    let keySafebrowsingGoogleFound = data.keySafebrowsingGoogleFound
      ? "found"
      : "missing";
    document.l10n.setAttributes(
      $("key-safebrowsing-google-box"),
      keySafebrowsingGoogleFound
    );

    let keyMozillaFound = data.keyMozillaFound ? "found" : "missing";
    document.l10n.setAttributes($("key-mozilla-box"), keyMozillaFound);

    $("safemode-box").textContent = data.safeMode;

    const formatHumanReadableBytes = (elem, bytes) => {
      let size = DownloadUtils.convertByteUnits(bytes);
      document.l10n.setAttributes(elem, "app-basics-data-size", {
        value: size[0],
        unit: size[1],
      });
    };

    formatHumanReadableBytes($("memory-size-box"), data.memorySizeBytes);
    formatHumanReadableBytes($("disk-available-box"), data.diskAvailableBytes);
  },

  async legacyUserStylesheets(legacyUserStylesheets) {
    $("legacyUserStylesheets-enabled").textContent =
      legacyUserStylesheets.active;
    $("legacyUserStylesheets-types").textContent =
      new Intl.ListFormat(undefined, { style: "short", type: "unit" }).format(
        legacyUserStylesheets.types
      ) ||
      document.l10n.setAttributes(
        $("legacyUserStylesheets-types"),
        "legacy-user-stylesheets-no-stylesheets-found"
      );
  },

  crashes(data) {
    if (!AppConstants.MOZ_CRASHREPORTER) {
      return;
    }

    let daysRange = Troubleshoot.kMaxCrashAge / (24 * 60 * 60 * 1000);
    document.l10n.setAttributes($("crashes"), "report-crash-for-days", {
      days: daysRange,
    });
    let reportURL;
    try {
      reportURL = Services.prefs.getCharPref("breakpad.reportURL");
      // Ignore any non http/https urls
      if (!/^https?:/i.test(reportURL)) {
        reportURL = null;
      }
    } catch (e) {}
    if (!reportURL) {
      $("crashes-noConfig").hidden = false;
      $("crashes-noConfig").classList.remove("no-copy");
      return;
    }
    $("crashes-allReports").hidden = false;

    if (data.pending > 0) {
      document.l10n.setAttributes(
        $("crashes-allReportsWithPending"),
        "pending-reports",
        { reports: data.pending }
      );
    }

    let dateNow = new Date();
    $.append(
      $("crashes-tbody"),
      data.submitted.map(function (crash) {
        let date = new Date(crash.date);
        let timePassed = dateNow - date;
        let formattedDateStrId;
        let formattedDateStrArgs;
        if (timePassed >= 24 * 60 * 60 * 1000) {
          let daysPassed = Math.round(timePassed / (24 * 60 * 60 * 1000));
          formattedDateStrId = "crashes-time-days";
          formattedDateStrArgs = { days: daysPassed };
        } else if (timePassed >= 60 * 60 * 1000) {
          let hoursPassed = Math.round(timePassed / (60 * 60 * 1000));
          formattedDateStrId = "crashes-time-hours";
          formattedDateStrArgs = { hours: hoursPassed };
        } else {
          let minutesPassed = Math.max(Math.round(timePassed / (60 * 1000)), 1);
          formattedDateStrId = "crashes-time-minutes";
          formattedDateStrArgs = { minutes: minutesPassed };
        }
        return $.new("tr", [
          $.new("td", [
            $.new("a", crash.id, null, { href: reportURL + crash.id }),
          ]),
          $.new("td", null, null, {
            "data-l10n-id": formattedDateStrId,
            "data-l10n-args": formattedDateStrArgs,
          }),
        ]);
      })
    );
  },

  addons(data) {
    $.append(
      $("addons-tbody"),
      data.map(function (addon) {
        return $.new("tr", [
          $.new("td", addon.name),
          $.new("td", addon.type),
          $.new("td", addon.version),
          $.new("td", addon.isActive),
          $.new("td", addon.locationName),
          $.new("td", addon.id),
        ]);
      })
    );
  },

  securitySoftware(data) {
    if (AppConstants.platform !== "win") {
      $("security-software").hidden = true;
      $("security-software-table").hidden = true;
      return;
    }

    $("security-software-antivirus").textContent = data.registeredAntiVirus;
    $("security-software-antispyware").textContent = data.registeredAntiSpyware;
    $("security-software-firewall").textContent = data.registeredFirewall;
  },

  async processes(data) {
    async function buildEntry(name, value) {
      const fluentName = ProcessType.fluentNameFromProcessTypeString(name);
      let entryName = (await document.l10n.formatValue(fluentName)) || name;
      $("processes-tbody").appendChild(
        $.new("tr", [$.new("td", entryName), $.new("td", value)])
      );
    }

    let remoteProcessesCount = Object.values(data.remoteTypes).reduce(
      (a, b) => a + b,
      0
    );
    document.querySelector("#remoteprocesses-row a").textContent =
      remoteProcessesCount;

    // Display the regular "web" process type first in the list,
    // and with special formatting.
    if (data.remoteTypes.web) {
      await buildEntry(
        "web",
        `${data.remoteTypes.web} / ${data.maxWebContentProcesses}`
      );
      delete data.remoteTypes.web;
    }

    for (let remoteProcessType in data.remoteTypes) {
      await buildEntry(remoteProcessType, data.remoteTypes[remoteProcessType]);
    }
  },

  environmentVariables(data) {
    if (!data) {
      return;
    }
    $.append(
      $("environment-variables-tbody"),
      Object.entries(data).map(([name, value]) => {
        return $.new(
          "tr",
          [$.new("td", name, "pref-name"), $.new("td", value, "pref-value")],
          soundsLikeDir(name) ? "no-copy" : undefined
        );
      })
    );
  },

  modifiedPreferences(data) {
    $.append($("prefs-tbody"), prefsTable(data));
  },

  lockedPreferences(data) {
    $.append($("locked-prefs-tbody"), prefsTable(data));
  },

  places(data) {
    if (!AppConstants.MOZ_PLACES) {
      return;
    }
    const { prefs } = data;
    const statsBody = $("place-database-stats-tbody");
    $.append(
      statsBody,
      prefs.map(function (entry) {
        return $.new("tr", [
          $.new("td", entry.entity),
          $.new("td", entry.count),
          $.new("td", entry.sizeBytes / 1024),
          $.new("td", entry.sizePerc),
          $.new("td", entry.efficiencyPerc),
          $.new("td", entry.sequentialityPerc),
        ]);
      })
    );
    statsBody.hidden = true;
    $("place-database-stats-toggle").addEventListener(
      "click",
      function (event) {
        if (statsBody.hidden) {
          document.l10n.setAttributes(
            event.target,
            "place-database-stats-hide"
          );
          statsBody.hidden = false;
        } else {
          document.l10n.setAttributes(
            event.target,
            "place-database-stats-show"
          );
          statsBody.hidden = true;
        }
      }
    );

    const formatter = new Intl.DateTimeFormat(undefined, {
      year: "numeric",
      month: "numeric",
      day: "numeric",
      hour: "numeric",
      minute: "numeric",
    });

    const maintenanceDateElement = $(
      "place-database-last-idle-maintenance-data"
    );
    if (data.lastMaintenanceDate) {
      maintenanceDateElement.textContent = formatter.format(
        new Date(data.lastMaintenanceDate)
      );
    } else {
      document.l10n.setAttributes(maintenanceDateElement, "missing");
    }

    const vacuumDateElement = $("place-database-last-vacuum-date");
    if (data.lastVacuumDate) {
      vacuumDateElement.textContent = formatter.format(
        new Date(data.lastVacuumDate)
      );
    } else {
      document.l10n.setAttributes(vacuumDateElement, "missing");
    }

    const integrityCorruptionDateElement = $(
      "place-database-last-integrity-corruption-date"
    );
    if (data.lastIntegrityCorruptionDate) {
      integrityCorruptionDateElement.textContent = formatter.format(
        new Date(data.lastIntegrityCorruptionDate)
      );
    } else {
      document.l10n.setAttributes(integrityCorruptionDateElement, "missing");
    }
  },

  printingPreferences(data) {
    if (AppConstants.platform == "android") {
      return;
    }
    const tbody = $("support-printing-prefs-tbody");
    $.append(tbody, prefsTable(data));
    $("support-printing-clear-settings-button").addEventListener(
      "click",
      function () {
        for (let name in data) {
          Services.prefs.clearUserPref(name);
        }
        tbody.textContent = "";
      }
    );
  },

  async graphics(data) {
    function localizedMsg(msg) {
      if (typeof msg == "object" && msg.key) {
        return document.l10n.formatValue(msg.key, msg.args);
      }
      let msgId = toFluentID(msg);
      if (msgId) {
        return document.l10n.formatValue(msgId);
      }
      return "";
    }

    // Read APZ info out of data.info, stripping it out in the process.
    let apzInfo = [];
    let formatApzInfo = function (info) {
      let out = [];
      for (let type of [
        "Wheel",
        "Touch",
        "Drag",
        "Keyboard",
        "Autoscroll",
        "Zooming",
      ]) {
        let key = "Apz" + type + "Input";

        if (!(key in info)) {
          continue;
        }

        delete info[key];

        out.push(toFluentID(type.toLowerCase() + "Enabled"));
      }

      return out;
    };

    // Create a <tr> element with key and value columns.
    //
    // @key      Text in the key column. Localized automatically, unless starts with "#".
    // @value    Fluent ID for text in the value column, or array of children.
    function buildRow(key, value) {
      let title = key[0] == "#" ? key.substr(1) : key;
      let keyStrId = toFluentID(key);
      let valueStrId = Array.isArray(value) ? null : toFluentID(value);
      let td = $.new("td", value);
      td.style["white-space"] = "pre-wrap";
      if (valueStrId) {
        document.l10n.setAttributes(td, valueStrId);
      }

      let th = $.new("th", title, "column");
      if (!key.startsWith("#")) {
        document.l10n.setAttributes(th, keyStrId);
      }
      return $.new("tr", [th, td]);
    }

    // @where    The name in "graphics-<name>-tbody", of the element to append to.
    // @trs      Array of row elements.
    function addRows(where, trs) {
      $.append($("graphics-" + where + "-tbody"), trs);
    }

    // Build and append a row.
    //
    // @where    The name in "graphics-<name>-tbody", of the element to append to.
    function addRow(where, key, value) {
      addRows(where, [buildRow(key, value)]);
    }
    if ("info" in data) {
      apzInfo = formatApzInfo(data.info);

      let trs = sortedArrayFromObject(data.info).map(function ([prop, val]) {
        let td = $.new("td", String(val));
        td.style["word-break"] = "break-all";
        return $.new("tr", [$.new("th", prop, "column"), td]);
      });
      addRows("diagnostics", trs);

      delete data.info;
    }

    let windowUtils = window.windowUtils;
    let gpuProcessPid = windowUtils.gpuProcessPid;

    if (gpuProcessPid != -1) {
      let gpuProcessKillButton = null;
      if (AppConstants.NIGHTLY_BUILD || AppConstants.MOZ_DEV_EDITION) {
        gpuProcessKillButton = $.new("button");

        gpuProcessKillButton.addEventListener("click", function () {
          windowUtils.terminateGPUProcess();
        });

        document.l10n.setAttributes(
          gpuProcessKillButton,
          "gpu-process-kill-button"
        );
      }

      addRow("diagnostics", "gpu-process-pid", [new Text(gpuProcessPid)]);
      if (gpuProcessKillButton) {
        addRow("diagnostics", "gpu-process", [gpuProcessKillButton]);
      }
    }

    if (
      (AppConstants.NIGHTLY_BUILD || AppConstants.MOZ_DEV_EDITION) &&
      AppConstants.platform != "macosx"
    ) {
      let gpuDeviceResetButton = $.new("button");

      gpuDeviceResetButton.addEventListener("click", function () {
        windowUtils.triggerDeviceReset();
      });

      document.l10n.setAttributes(
        gpuDeviceResetButton,
        "gpu-device-reset-button"
      );
      addRow("diagnostics", "gpu-device-reset", [gpuDeviceResetButton]);
    }

    // graphics-failures-tbody tbody
    if ("failures" in data) {
      // If indices is there, it should be the same length as failures,
      // (see Troubleshoot.sys.mjs) but we check anyway:
      if ("indices" in data && data.failures.length == data.indices.length) {
        let combined = [];
        for (let i = 0; i < data.failures.length; i++) {
          let assembled = assembleFromGraphicsFailure(i, data);
          combined.push(assembled);
        }
        combined.sort(function (a, b) {
          if (a.index < b.index) {
            return -1;
          }
          if (a.index > b.index) {
            return 1;
          }
          return 0;
        });
        $.append(
          $("graphics-failures-tbody"),
          combined.map(function (val) {
            return $.new("tr", [
              $.new("th", val.header, "column"),
              $.new("td", val.message),
            ]);
          })
        );
        delete data.indices;
      } else {
        $.append($("graphics-failures-tbody"), [
          $.new("tr", [
            $.new("th", "LogFailure", "column"),
            $.new(
              "td",
              data.failures.map(function (val) {
                return $.new("p", val);
              })
            ),
          ]),
        ]);
      }
      delete data.failures;
    } else {
      $("graphics-failures-tbody").hidden = true;
    }

    // Add a new row to the table, and take the key (or keys) out of data.
    //
    // @where        Table section to add to.
    // @key          Data key to use.
    // @colKey       The localization key to use, if different from key.
    async function addRowFromKey(where, key, colKey) {
      if (!(key in data)) {
        return;
      }
      colKey = colKey || key;

      let value;
      let messageKey = key + "Message";
      if (messageKey in data) {
        value = await localizedMsg(data[messageKey]);
        delete data[messageKey];
      } else {
        value = data[key];
      }
      delete data[key];

      if (value) {
        addRow(where, colKey, [new Text(value)]);
      }
    }

    // graphics-features-tbody
    let devicePixelRatios = data.graphicsDevicePixelRatios;
    addRow("features", "graphicsDevicePixelRatios", [
      new Text(devicePixelRatios),
    ]);

    let compositor = "";
    if (data.windowLayerManagerRemote) {
      compositor = data.windowLayerManagerType;
    } else {
      let noOMTCString = await document.l10n.formatValue("main-thread-no-omtc");
      compositor = "BasicLayers (" + noOMTCString + ")";
    }
    addRow("features", "compositing", [new Text(compositor)]);
    addRow("features", "supportFontDetermination", [
      new Text(data.supportFontDetermination),
    ]);
    delete data.windowLayerManagerRemote;
    delete data.windowLayerManagerType;
    delete data.numTotalWindows;
    delete data.numAcceleratedWindows;
    delete data.numAcceleratedWindowsMessage;
    delete data.graphicsDevicePixelRatios;

    addRow(
      "features",
      "asyncPanZoom",
      apzInfo.length
        ? [
            new Text(
              (
                await document.l10n.formatValues(
                  apzInfo.map(id => {
                    return { id };
                  })
                )
              ).join("; ")
            ),
          ]
        : "apz-none"
    );
    let featureKeys = [
      "webgl1WSIInfo",
      "webgl1Renderer",
      "webgl1Version",
      "webgl1DriverExtensions",
      "webgl1Extensions",
      "webgl2WSIInfo",
      "webgl2Renderer",
      "webgl2Version",
      "webgl2DriverExtensions",
      "webgl2Extensions",
      ["supportsHardwareH264", "hardware-h264"],
      ["windowProtocol", "graphics-window-protocol"],
      ["desktopEnvironment", "graphics-desktop-environment"],
      "targetFrameRate",
    ];
    for (let feature of featureKeys) {
      if (Array.isArray(feature)) {
        await addRowFromKey("features", feature[0], feature[1]);
        continue;
      }
      await addRowFromKey("features", feature);
    }

    featureKeys = ["webgpuDefaultAdapter", "webgpuFallbackAdapter"];
    for (let feature of featureKeys) {
      const obj = data[feature];
      if (obj) {
        const str = JSON.stringify(obj, null, "  ");
        await addRow("features", feature, [new Text(str)]);
        delete data[feature];
      }
    }

    if ("directWriteEnabled" in data) {
      let message = data.directWriteEnabled;
      if ("directWriteVersion" in data) {
        message += " (" + data.directWriteVersion + ")";
      }
      await addRow("features", "#DirectWrite", [new Text(message)]);
      delete data.directWriteEnabled;
      delete data.directWriteVersion;
    }

    // Adapter tbodies.
    let adapterKeys = [
      ["adapterDescription", "gpu-description"],
      ["adapterVendorID", "gpu-vendor-id"],
      ["adapterDeviceID", "gpu-device-id"],
      ["driverVendor", "gpu-driver-vendor"],
      ["driverVersion", "gpu-driver-version"],
      ["driverDate", "gpu-driver-date"],
      ["adapterDrivers", "gpu-drivers"],
      ["adapterSubsysID", "gpu-subsys-id"],
      ["adapterRAM", "gpu-ram"],
    ];

    function showGpu(id, suffix) {
      function get(prop) {
        return data[prop + suffix];
      }

      let trs = [];
      for (let [prop, key] of adapterKeys) {
        let value = get(prop);
        if (value === undefined || value === "") {
          continue;
        }
        trs.push(buildRow(key, [new Text(value)]));
      }

      if (!trs.length) {
        $("graphics-" + id + "-tbody").hidden = true;
        return;
      }

      let active = "yes";
      if ("isGPU2Active" in data && (suffix == "2") != data.isGPU2Active) {
        active = "no";
      }

      addRow(id, "gpu-active", active);
      addRows(id, trs);
    }
    showGpu("gpu-1", "");
    showGpu("gpu-2", "2");

    // Remove adapter keys.
    for (let [prop /* key */] of adapterKeys) {
      delete data[prop];
      delete data[prop + "2"];
    }
    delete data.isGPU2Active;

    let featureLog = data.featureLog;
    delete data.featureLog;

    if (featureLog.features.length) {
      for (let feature of featureLog.features) {
        let trs = [];
        for (let entry of feature.log) {
          let bugNumber;
          if (entry.hasOwnProperty("failureId")) {
            // This is a failure ID. See nsIGfxInfo.idl.
            let m = /BUG_(\d+)/.exec(entry.failureId);
            if (m) {
              bugNumber = m[1];
            }
          }

          let failureIdSpan = $.new("span", "");
          if (bugNumber) {
            let bugHref = $.new("a");
            bugHref.href =
              "https://bugzilla.mozilla.org/show_bug.cgi?id=" + bugNumber;
            bugHref.setAttribute("data-l10n-name", "bug-link");
            failureIdSpan.append(bugHref);
            document.l10n.setAttributes(
              failureIdSpan,
              "support-blocklisted-bug",
              {
                bugNumber,
              }
            );
          } else if (
            entry.hasOwnProperty("failureId") &&
            entry.failureId.length
          ) {
            document.l10n.setAttributes(failureIdSpan, "unknown-failure", {
              failureCode: entry.failureId,
            });
          }

          let messageSpan = $.new("span", "");
          if (entry.hasOwnProperty("message") && entry.message.length) {
            messageSpan.innerText = entry.message;
          }

          let typeCol = $.new("td", entry.type);
          let statusCol = $.new("td", entry.status);
          let messageCol = $.new("td", "");
          let failureIdCol = $.new("td", "");
          typeCol.style.width = "10%";
          statusCol.style.width = "10%";
          messageCol.style.width = "30%";
          messageCol.appendChild(messageSpan);
          failureIdCol.style.width = "50%";
          failureIdCol.appendChild(failureIdSpan);

          trs.push($.new("tr", [typeCol, statusCol, messageCol, failureIdCol]));
        }
        addRow("decisions", "#" + feature.name, [$.new("table", trs)]);
      }
    } else {
      $("graphics-decisions-tbody").hidden = true;
    }

    if (featureLog.fallbacks.length) {
      for (let fallback of featureLog.fallbacks) {
        addRow("workarounds", "#" + fallback.name, [
          new Text(fallback.message),
        ]);
      }
    } else {
      $("graphics-workarounds-tbody").hidden = true;
    }

    let crashGuards = data.crashGuards;
    delete data.crashGuards;

    if (crashGuards.length) {
      for (let guard of crashGuards) {
        let resetButton = $.new("button");
        let onClickReset = function () {
          Services.prefs.setIntPref(guard.prefName, 0);
          resetButton.removeEventListener("click", onClickReset);
          resetButton.disabled = true;
        };

        document.l10n.setAttributes(resetButton, "reset-on-next-restart");
        resetButton.addEventListener("click", onClickReset);

        addRow("crashguards", guard.type + "CrashGuard", [resetButton]);
      }
    } else {
      $("graphics-crashguards-tbody").hidden = true;
    }

    // Now that we're done, grab any remaining keys in data and drop them into
    // the diagnostics section.
    for (let key in data) {
      let value = data[key];
      addRow("diagnostics", key, [new Text(value)]);
    }
  },

  async media(data) {
    function insertBasicInfo(key, value) {
      function createRow(key, value) {
        let th = $.new("th", null, "column");
        document.l10n.setAttributes(th, key);
        let td = $.new("td", value);
        td.style["white-space"] = "pre-wrap";
        td.colSpan = 8;
        return $.new("tr", [th, td]);
      }
      $.append($("media-info-tbody"), [createRow(key, value)]);
    }

    function createDeviceInfoRow(device) {
      let deviceInfo = Ci.nsIAudioDeviceInfo;

      let states = {};
      states[deviceInfo.STATE_DISABLED] = "Disabled";
      states[deviceInfo.STATE_UNPLUGGED] = "Unplugged";
      states[deviceInfo.STATE_ENABLED] = "Enabled";

      let preferreds = {};
      preferreds[deviceInfo.PREF_NONE] = "None";
      preferreds[deviceInfo.PREF_MULTIMEDIA] = "Multimedia";
      preferreds[deviceInfo.PREF_VOICE] = "Voice";
      preferreds[deviceInfo.PREF_NOTIFICATION] = "Notification";
      preferreds[deviceInfo.PREF_ALL] = "All";

      let formats = {};
      formats[deviceInfo.FMT_S16LE] = "S16LE";
      formats[deviceInfo.FMT_S16BE] = "S16BE";
      formats[deviceInfo.FMT_F32LE] = "F32LE";
      formats[deviceInfo.FMT_F32BE] = "F32BE";

      function toPreferredString(preferred) {
        if (preferred == deviceInfo.PREF_NONE) {
          return preferreds[deviceInfo.PREF_NONE];
        } else if (preferred & deviceInfo.PREF_ALL) {
          return preferreds[deviceInfo.PREF_ALL];
        }
        let str = "";
        for (let pref of [
          deviceInfo.PREF_MULTIMEDIA,
          deviceInfo.PREF_VOICE,
          deviceInfo.PREF_NOTIFICATION,
        ]) {
          if (preferred & pref) {
            str += " " + preferreds[pref];
          }
        }
        return str;
      }

      function toFromatString(dev) {
        let str = "default: " + formats[dev.defaultFormat] + ", support:";
        for (let fmt of [
          deviceInfo.FMT_S16LE,
          deviceInfo.FMT_S16BE,
          deviceInfo.FMT_F32LE,
          deviceInfo.FMT_F32BE,
        ]) {
          if (dev.supportedFormat & fmt) {
            str += " " + formats[fmt];
          }
        }
        return str;
      }

      function toRateString(dev) {
        return (
          "default: " +
          dev.defaultRate +
          ", support: " +
          dev.minRate +
          " - " +
          dev.maxRate
        );
      }

      function toLatencyString(dev) {
        return dev.minLatency + " - " + dev.maxLatency;
      }

      return $.new("tr", [
        $.new("td", device.name),
        $.new("td", device.groupId),
        $.new("td", device.vendor),
        $.new("td", states[device.state]),
        $.new("td", toPreferredString(device.preferred)),
        $.new("td", toFromatString(device)),
        $.new("td", device.maxChannels),
        $.new("td", toRateString(device)),
        $.new("td", toLatencyString(device)),
      ]);
    }

    function insertDeviceInfo(side, devices) {
      let rows = [];
      for (let dev of devices) {
        rows.push(createDeviceInfoRow(dev));
      }
      $.append($("media-" + side + "-devices-tbody"), rows);
    }

    function insertEnumerateDatabase() {
      if (
        !Services.prefs.getBoolPref("media.mediacapabilities.from-database")
      ) {
        $("media-capabilities-tbody").hidden = true;
        return;
      }
      let button = $("enumerate-database-button");
      if (button) {
        button.addEventListener("click", function () {
          let { KeyValueService } = ChromeUtils.importESModule(
            "resource://gre/modules/kvstore.sys.mjs"
          );
          let currProfDir = Services.dirsvc.get("ProfD", Ci.nsIFile);
          currProfDir.append("mediacapabilities");
          let path = currProfDir.path;

          function enumerateDatabase(name) {
            KeyValueService.getOrCreate(path, name)
              .then(database => {
                return database.enumerate();
              })
              .then(enumerator => {
                var logs = [];
                logs.push(`${name}:`);
                while (enumerator.hasMoreElements()) {
                  const { key, value } = enumerator.getNext();
                  logs.push(`${key}: ${value}`);
                }
                $("enumerate-database-result").textContent +=
                  logs.join("\n") + "\n";
              })
              .catch(() => {
                $("enumerate-database-result").textContent += `${name}:\n`;
              });
          }

          $("enumerate-database-result").hidden = false;
          $("enumerate-database-result").classList.remove("no-copy");
          $("enumerate-database-result").textContent = "";

          enumerateDatabase("video/av1");
          enumerateDatabase("video/vp8");
          enumerateDatabase("video/vp9");
          enumerateDatabase("video/avc");
          enumerateDatabase("video/theora");
        });
      }
    }

    function roundtripAudioLatency() {
      insertBasicInfo("roundtrip-latency", "...");
      window.windowUtils
        .defaultDevicesRoundTripLatency()
        .then(latency => {
          var latencyString = `${(latency[0] * 1000).toFixed(2)}ms (${(
            latency[1] * 1000
          ).toFixed(2)})`;
          data.defaultDevicesRoundTripLatency = latencyString;
          document.querySelector(
            'th[data-l10n-id="roundtrip-latency"]'
          ).nextSibling.textContent = latencyString;
        })
        .catch(() => {});
    }

    function createCDMInfoRow(cdmInfo) {
      function findElementInArray(array, name) {
        const rv = array.find(element => element.includes(name));
        return rv ? rv.split("=")[1] : "Unknown";
      }

      function getAudioRobustness(array) {
        return findElementInArray(array, "audio-robustness");
      }

      function getVideoRobustness(array) {
        return findElementInArray(array, "video-robustness");
      }

      function getSupportedCodecs(array) {
        const mp4Content = findElementInArray(array, "MP4");
        const webContent = findElementInArray(array, "WEBM");

        const mp4DecodingAndDecryptingCodecs = mp4Content
          .match(/decoding-and-decrypting:\[([^\]]*)\]/)[1]
          .split(",");
        const webmDecodingAndDecryptingCodecs = webContent
          .match(/decoding-and-decrypting:\[([^\]]*)\]/)[1]
          .split(",");

        const mp4DecryptingOnlyCodecs = mp4Content
          .match(/decrypting-only:\[([^\]]*)\]/)[1]
          .split(",");
        const webmDecryptingOnlyCodecs = webContent
          .match(/decrypting-only:\[([^\]]*)\]/)[1]
          .split(",");

        // Combine and get unique codecs for decoding-and-decrypting (always)
        // and decrypting-only (only set when it's not empty)
        let rv = {};
        rv.decodingAndDecrypting = [
          ...new Set(
            [
              ...mp4DecodingAndDecryptingCodecs,
              ...webmDecodingAndDecryptingCodecs,
            ].filter(Boolean)
          ),
        ];
        let temp = [
          ...new Set(
            [...mp4DecryptingOnlyCodecs, ...webmDecryptingOnlyCodecs].filter(
              Boolean
            )
          ),
        ];
        if (temp.length) {
          rv.decryptingOnly = temp;
        }
        return rv;
      }

      function getCapabilities(array) {
        let capabilities = {};
        capabilities.persistent = findElementInArray(array, "persistent");
        capabilities.distinctive = findElementInArray(array, "distinctive");
        capabilities.sessionType = findElementInArray(array, "sessionType");
        capabilities.codec = getSupportedCodecs(array);
        return JSON.stringify(capabilities);
      }

      const rvArray = cdmInfo.capabilities.split(" ");
      return $.new("tr", [
        $.new("td", cdmInfo.keySystemName),
        $.new("td", getVideoRobustness(rvArray)),
        $.new("td", getAudioRobustness(rvArray)),
        $.new("td", getCapabilities(rvArray), null, { colspan: "5" }),
        $.new("td", cdmInfo.clearlead ? "Yes" : "No"),
      ]);
    }

    async function insertContentDecryptionModuleInfo() {
      let rows = [];
      // Retrieve information from GMPCDM
      let cdmInfo =
        await ChromeUtils.getGMPContentDecryptionModuleInformation();
      for (let info of cdmInfo) {
        rows.push(createCDMInfoRow(info));
      }
      // Retrieve information from WMFCDM, only works when MOZ_WMF_CDM is true
      if (ChromeUtils.getWMFContentDecryptionModuleInformation !== undefined) {
        cdmInfo = await ChromeUtils.getWMFContentDecryptionModuleInformation();
        for (let info of cdmInfo) {
          rows.push(createCDMInfoRow(info));
        }
      }
      $.append($("media-content-decryption-modules-tbody"), rows);
    }

    // Basic information
    insertBasicInfo("audio-backend", data.currentAudioBackend);
    insertBasicInfo("max-audio-channels", data.currentMaxAudioChannels);
    insertBasicInfo("sample-rate", data.currentPreferredSampleRate);

    if (AppConstants.platform == "macosx") {
      var micStatus = {};
      let permission = Cc["@mozilla.org/ospermissionrequest;1"].getService(
        Ci.nsIOSPermissionRequest
      );
      permission.getAudioCapturePermissionState(micStatus);
      if (micStatus.value == permission.PERMISSION_STATE_AUTHORIZED) {
        roundtripAudioLatency();
      }
    } else {
      roundtripAudioLatency();
    }

    // Output devices information
    insertDeviceInfo("output", data.audioOutputDevices);

    // Input devices information
    insertDeviceInfo("input", data.audioInputDevices);

    // Media Capabilitites
    insertEnumerateDatabase();

    // Create codec support matrix if possible
    let supportInfo = null;
    if (data.codecSupportInfo.length) {
      const [
        supportText,
        unsupportedText,
        codecNameHeaderText,
        codecSWDecodeText,
        codecHWDecodeText,
        codecSWEncodeText,
        codecHWEncodeText,
        lackOfExtensionText,
      ] = await document.l10n.formatValues([
        "media-codec-support-supported",
        "media-codec-support-unsupported",
        "media-codec-support-codec-name",
        "media-codec-support-sw-decoding",
        "media-codec-support-hw-decoding",
        "media-codec-support-sw-encoding",
        "media-codec-support-hw-encoding",
        "media-codec-support-lack-of-extension",
      ]);

      function formatCodecRowHeader(a, b, c, d, e) {
        let h1 = $.new("th", a);
        let h2 = $.new("th", b);
        let h3 = $.new("th", c);
        let h4 = $.new("th", d);
        let h5 = $.new("th", e);
        h1.classList.add("codec-table-name");
        h2.classList.add("codec-table-sw");
        h3.classList.add("codec-table-hw");
        h2.classList.add("codec-table-sw");
        h3.classList.add("codec-table-hw");
        return $.new("tr", [h1, h2, h3, h4, h5]);
      }

      function formatCodecRow(codec, swDecode, hwDecode, swEncode, hwEncode) {
        let swDecodeCell = $.new(
          "td",
          swDecode ? supportText : unsupportedText
        );
        let hwDecodeCell = $.new(
          "td",
          hwDecode ? supportText : unsupportedText
        );
        let swEncodeCell = $.new(
          "td",
          swEncode ? supportText : unsupportedText
        );
        let hwEncodeCell = $.new(
          "td",
          hwEncode ? supportText : unsupportedText
        );
        if (swDecode) {
          swDecodeCell.classList.add("supported");
        } else {
          swDecodeCell.classList.add("unsupported");
        }
        if (hwDecode) {
          hwDecodeCell.classList.add("supported");
        } else {
          hwDecodeCell.classList.add("unsupported");
        }
        if (swEncode) {
          swEncodeCell.classList.add("supported");
        } else {
          swEncodeCell.classList.add("unsupported");
        }
        if (hwEncode) {
          hwEncodeCell.classList.add("supported");
        } else {
          hwEncodeCell.classList.add("unsupported");
        }
        return $.new("tr", [
          $.new("td", codec),
          swDecodeCell,
          hwDecodeCell,
          swEncodeCell,
          hwEncodeCell,
        ]);
      }

      function formatCodecRowForLackOfExtension(codec, swDecode, swEncode) {
        let swDecodeCell = $.new(
          "td",
          swDecode ? supportText : unsupportedText
        );
        let swEncodeCell = $.new(
          "td",
          swEncode ? supportText : unsupportedText
        );
        // Link to AV1 extension on MS store.
        let hwCell = $.new("td", [
          $.new("a", lackOfExtensionText, null, {
            href: "ms-windows-store://pdp/?ProductId=9MVZQVXJBQ9V",
          }),
        ]);
        if (swDecode) {
          swDecodeCell.classList.add("supported");
        } else {
          swDecodeCell.classList.add("unsupported");
        }
        if (swEncode) {
          swEncodeCell.classList.add("supported");
        } else {
          swEncodeCell.classList.add("unsupported");
        }
        hwCell.classList.add("lack-of-extension");
        return $.new("tr", [
          $.new("td", codec),
          swDecodeCell,
          hwCell,
          swEncodeCell,
          hwCell,
        ]);
      }

      // Parse codec support string and create dictionary containing
      // SW/HW support information for each codec found
      let codecs = {};
      for (const codec_string of data.codecSupportInfo.split("\n")) {
        const s = codec_string.split(" ");
        const codec_name = s[0];
        const codec_support = s.slice(1);

        if (!(codec_name in codecs)) {
          codecs[codec_name] = {
            name: codec_name,
            swDecode: false,
            hwDecode: false,
            swEncode: false,
            hwEncode: false,
            lackOfExtension: false,
          };
        }

        if (codec_support.includes("SWDEC")) {
          codecs[codec_name].swDecode = true;
        }
        if (codec_support.includes("HWDEC")) {
          codecs[codec_name].hwDecode = true;
        }
        if (codec_support.includes("SWENC")) {
          codecs[codec_name].swEncode = true;
        }
        if (codec_support.includes("HWENC")) {
          codecs[codec_name].hwEncode = true;
        }
        if (codec_support.includes("LACK_OF_EXTENSION")) {
          codecs[codec_name].lackOfExtension = true;
        }
      }

      // Create row in support table for each codec
      let codecSupportRows = [];
      for (const c in codecs) {
        if (!codecs.hasOwnProperty(c)) {
          continue;
        }
        if (codecs[c].lackOfExtension) {
          codecSupportRows.push(
            formatCodecRowForLackOfExtension(
              codecs[c].name,
              codecs[c].swDecode,
              codecs[c].swEncode
            )
          );
        } else {
          codecSupportRows.push(
            formatCodecRow(
              codecs[c].name,
              codecs[c].swDecode,
              codecs[c].hwDecode,
              codecs[c].swEncode,
              codecs[c].hwEncode
            )
          );
        }
      }

      let codecSupportTable = $.new("table", [
        formatCodecRowHeader(
          codecNameHeaderText,
          codecSWDecodeText,
          codecHWDecodeText,
          codecSWEncodeText,
          codecHWEncodeText
        ),
        $.new("tbody", codecSupportRows),
      ]);
      codecSupportTable.id = "codec-table";
      supportInfo = [codecSupportTable];
    } else {
      // Don't have access to codec support information
      supportInfo = await document.l10n.formatValue(
        "media-codec-support-error"
      );
    }
    if (["win", "macosx", "linux", "android"].includes(AppConstants.platform)) {
      insertBasicInfo("media-codec-support-info", supportInfo);
    }

    // CDM info
    insertContentDecryptionModuleInfo();
  },

  remoteAgent(data) {
    if (!AppConstants.ENABLE_WEBDRIVER) {
      return;
    }
    $("remote-debugging-accepting-connections").textContent = data.running;
    $("remote-debugging-url").textContent = data.url;
  },

  contentAnalysis(data) {
    if (AppConstants.platform == "android") {
      return;
    }
    $("content-analysis-active").textContent = data.active;
    if (data.active) {
      $("content-analysis-connected-to-agent").textContent = data.connected;
      $("content-analysis-agent-path").textContent = data.agentPath;
      $("content-analysis-agent-failed-signature-verification").textContent =
        data.failedSignatureVerification;
      $("content-analysis-request-count").textContent = data.requestCount;
    }
  },

  accessibility(data) {
    $("a11y-activated").textContent = data.isActive;
    $("a11y-force-disabled").textContent = data.forceDisabled || 0;

    const instantiator = data.instantiator;
    if (instantiator) {
      $("a11y-instantiator").hidden = false;
      $("a11y-instantiator").querySelector("td").textContent = instantiator;
    }
  },

  startupCache(data) {
    $("startup-cache-disk-cache-path").textContent = data.DiskCachePath;
    $("startup-cache-ignore-disk-cache").textContent = data.IgnoreDiskCache;
    $("startup-cache-found-disk-cache-on-init").textContent =
      data.FoundDiskCacheOnInit;
    $("startup-cache-wrote-to-disk-cache").textContent = data.WroteToDiskCache;
  },

  libraryVersions(data) {
    let trs = [
      $.new("tr", [
        $.new("th", ""),
        $.new("th", null, null, { "data-l10n-id": "min-lib-versions" }),
        $.new("th", null, null, { "data-l10n-id": "loaded-lib-versions" }),
      ]),
    ];
    sortedArrayFromObject(data).forEach(function ([name, val]) {
      trs.push(
        $.new("tr", [
          $.new("td", name),
          $.new("td", val.minVersion),
          $.new("td", val.version),
        ])
      );
    });
    $.append($("libversions-tbody"), trs);
  },

  userJS(data) {
    if (!data.exists) {
      return;
    }
    let userJSFile = Services.dirsvc.get("PrefD", Ci.nsIFile);
    userJSFile.append("user.js");
    $("prefs-user-js-link").href = Services.io.newFileURI(userJSFile).spec;
    $("prefs-user-js-section").hidden = false;
    $("prefs-user-js-section").classList.remove("no-copy");
  },

  sandbox(data) {
    if (!AppConstants.MOZ_SANDBOX) {
      return;
    }

    let tbody = $("sandbox-tbody");
    for (let key in data) {
      // Simplify the display a little in the common case.
      if (
        key === "hasPrivilegedUserNamespaces" &&
        data[key] === data.hasUserNamespaces
      ) {
        continue;
      }
      if (key === "syscallLog") {
        // Not in this table.
        continue;
      }
      let keyStrId = toFluentID(key);
      let th = $.new("th", null, "column");
      document.l10n.setAttributes(th, keyStrId);
      let td = $.new("td", data[key]);
      // Warning not applicable to Flatpak (see Bug 1882881), Snap or
      // any "Packaged App" (eg. Debian package)
      const isPackagedApp = Services.sysinfo.getPropertyAsBool("isPackagedApp");
      if (key === "hasUserNamespaces" && !data[key] && !isPackagedApp) {
        td = $.new("td", "");
        td.classList.add("feature-unavailable");
        let span = document.createElement("span");
        document.l10n.setAttributes(
          span,
          "support-user-namespaces-unavailable",
          {
            status: data[key],
          }
        );
        let supportLink = document.createElement("a", {
          is: "moz-support-link",
        });
        supportLink.classList.add("user-namespaces-unavailabe-support-link");
        supportLink.setAttribute(
          "support-page",
          "install-firefox-linux#w_install-firefox-from-mozilla-builds"
        );
        td.appendChild(span);
        td.appendChild(supportLink);
      }
      tbody.appendChild($.new("tr", [th, td]));
    }

    if ("syscallLog" in data) {
      let syscallBody = $("sandbox-syscalls-tbody");
      let argsHead = $("sandbox-syscalls-argshead");
      for (let syscall of data.syscallLog) {
        if (argsHead.colSpan < syscall.args.length) {
          argsHead.colSpan = syscall.args.length;
        }
        let procTypeStrId = toFluentID(syscall.procType);
        let cells = [
          $.new("td", syscall.index, "integer"),
          $.new("td", syscall.msecAgo / 1000),
          $.new("td", syscall.pid, "integer"),
          $.new("td", syscall.tid, "integer"),
          $.new("td", null, null, {
            "data-l10n-id": "sandbox-proc-type-" + procTypeStrId,
          }),
          $.new("td", syscall.syscall, "integer"),
        ];
        for (let arg of syscall.args) {
          cells.push($.new("td", arg, "integer"));
        }
        syscallBody.appendChild($.new("tr", cells));
      }
    }
  },

  intl(data) {
    $("intl-locale-requested").textContent = JSON.stringify(
      data.localeService.requested
    );
    $("intl-locale-available").textContent = JSON.stringify(
      data.localeService.available
    );
    $("intl-locale-supported").textContent = JSON.stringify(
      data.localeService.supported
    );
    $("intl-locale-regionalprefs").textContent = JSON.stringify(
      data.localeService.regionalPrefs
    );
    $("intl-locale-default").textContent = JSON.stringify(
      data.localeService.defaultLocale
    );

    $("intl-osprefs-systemlocales").textContent = JSON.stringify(
      data.osPrefs.systemLocales
    );
    $("intl-osprefs-regionalprefs").textContent = JSON.stringify(
      data.osPrefs.regionalPrefsLocales
    );
  },

  remoteSettings(data) {
    if (!data) {
      return;
    }
    const { isSynchronizationBroken, lastCheck, localTimestamp, history } =
      data;

    $("support-remote-settings-status-ok").hidden = isSynchronizationBroken;
    $("support-remote-settings-status-broken").hidden =
      !isSynchronizationBroken;
    $("support-remote-settings-last-check").textContent = lastCheck;
    $("support-remote-settings-local-timestamp").textContent = localTimestamp;
    $.append(
      $("support-remote-settings-sync-history-tbody"),
      history["settings-sync"].map(({ status, datetime, infos }) =>
        $.new("tr", [
          $.new("td", [document.createTextNode(status)]),
          $.new("td", [document.createTextNode(datetime)]),
          $.new("td", [document.createTextNode(JSON.stringify(infos))]),
        ])
      )
    );
  },

  normandy(data) {
    if (!data) {
      return;
    }

    const {
      prefStudies,
      addonStudies,
      prefRollouts,
      nimbusExperiments,
      nimbusRollouts,
    } = data;
    $.append(
      $("remote-features-tbody"),
      prefRollouts.map(({ slug, state }) =>
        $.new("tr", [
          $.new("td", [document.createTextNode(slug)]),
          $.new("td", [document.createTextNode(state)]),
        ])
      )
    );

    $.append(
      $("remote-features-tbody"),
      nimbusRollouts.map(({ userFacingName, branch }) =>
        $.new("tr", [
          $.new("td", [document.createTextNode(userFacingName)]),
          $.new("td", [document.createTextNode(`(${branch.slug})`)]),
        ])
      )
    );
    $.append(
      $("remote-experiments-tbody"),
      [addonStudies, prefStudies, nimbusExperiments]
        .flat()
        .map(({ userFacingName, branch }) =>
          $.new("tr", [
            $.new("td", [document.createTextNode(userFacingName)]),
            $.new("td", [document.createTextNode(branch?.slug || branch)]),
          ])
        )
    );
  },
};

var $ = document.getElementById.bind(document);

$.new = function $_new(tag, textContentOrChildren, className, attributes) {
  let elt = document.createElement(tag);
  if (className) {
    elt.className = className;
  }
  if (attributes) {
    if (attributes["data-l10n-id"]) {
      let args = attributes.hasOwnProperty("data-l10n-args")
        ? attributes["data-l10n-args"]
        : undefined;
      document.l10n.setAttributes(elt, attributes["data-l10n-id"], args);
      delete attributes["data-l10n-id"];
      if (args) {
        delete attributes["data-l10n-args"];
      }
    }

    for (let attrName in attributes) {
      elt.setAttribute(attrName, attributes[attrName]);
    }
  }
  if (Array.isArray(textContentOrChildren)) {
    this.append(elt, textContentOrChildren);
  } else if (!attributes || !attributes["data-l10n-id"]) {
    elt.textContent = String(textContentOrChildren);
  }
  return elt;
};

$.append = function $_append(parent, children) {
  children.forEach(c => parent.appendChild(c));
};

function assembleFromGraphicsFailure(i, data) {
  // Only cover the cases we have today; for example, we do not have
  // log failures that assert and we assume the log level is 1/error.
  let message = data.failures[i];
  let index = data.indices[i];
  let what = "";
  if (message.search(/\[GFX1-\]: \(LF\)/) == 0) {
    // Non-asserting log failure - the message is substring(14)
    what = "LogFailure";
    message = message.substring(14);
  } else if (message.search(/\[GFX1-\]: /) == 0) {
    // Non-asserting - the message is substring(9)
    what = "Error";
    message = message.substring(9);
  } else if (message.search(/\[GFX1\]: /) == 0) {
    // Asserting - the message is substring(8)
    what = "Assert";
    message = message.substring(8);
  }
  let assembled = {
    index,
    header: "(#" + index + ") " + what,
    message,
  };
  return assembled;
}

function sortedArrayFromObject(obj) {
  let tuples = [];
  for (let prop in obj) {
    tuples.push([prop, obj[prop]]);
  }
  tuples.sort(([prop1], [prop2]) => prop1.localeCompare(prop2));
  return tuples;
}

/**
 * @param {string} key
 * @returns {boolean}
 */
function soundsLikeDir(key) {
  const dirSuffixes = ["directory", "path", "dir"];
  return dirSuffixes.some(suffix => key.toLowerCase().endsWith(suffix));
}

/**
 * Recursively replaces values with keys that
 * sound like paths by "<non-empty string>".
 *
 * @param {object} object
 */
function sanitizeSnapshot(object) {
  for (let [key, val] of Object.entries(object)) {
    if (!val) {
      // Don't recurse into null and leave empty strings empty.
      continue;
    }
    if (typeof val == "object") {
      sanitizeSnapshot(val);
    } else if (typeof val == "string" && soundsLikeDir(key)) {
      object[key] = "<non-empty string>";
    }
  }
}

function copyRawDataToClipboard(button) {
  if (button) {
    button.disabled = true;
  }
  Troubleshoot.snapshot().then(
    async snapshot => {
      sanitizeSnapshot(snapshot);
      if (button) {
        button.disabled = false;
      }
      let str = Cc["@mozilla.org/supports-string;1"].createInstance(
        Ci.nsISupportsString
      );
      str.data = JSON.stringify(snapshot, undefined, 2);
      let transferable = Cc[
        "@mozilla.org/widget/transferable;1"
      ].createInstance(Ci.nsITransferable);
      transferable.init(getLoadContext());
      transferable.addDataFlavor("text/plain");
      transferable.setTransferData("text/plain", str);
      Services.clipboard.setData(
        transferable,
        null,
        Ci.nsIClipboard.kGlobalClipboard
      );
    },
    err => {
      if (button) {
        button.disabled = false;
      }
      console.error(err);
    }
  );
}

function getLoadContext() {
  return window.docShell.QueryInterface(Ci.nsILoadContext);
}

async function copyContentsToClipboard() {
  // Get the HTML and text representations for the important part of the page.
  let contentsDiv = $("contents").cloneNode(true);
  // Remove the items we don't want to copy from the clone:
  contentsDiv.querySelectorAll(".no-copy, [hidden]").forEach(n => n.remove());
  let dataHtml = contentsDiv.innerHTML;
  let dataText = createTextForElement(contentsDiv);

  // We can't use plain strings, we have to use nsSupportsString.
  let supportsStringClass = Cc["@mozilla.org/supports-string;1"];
  let ssHtml = supportsStringClass.createInstance(Ci.nsISupportsString);
  let ssText = supportsStringClass.createInstance(Ci.nsISupportsString);

  let transferable = Cc["@mozilla.org/widget/transferable;1"].createInstance(
    Ci.nsITransferable
  );
  transferable.init(getLoadContext());

  // Add the HTML flavor.
  transferable.addDataFlavor("text/html");
  ssHtml.data = dataHtml;
  transferable.setTransferData("text/html", ssHtml);

  // Add the plain text flavor.
  transferable.addDataFlavor("text/plain");
  ssText.data = dataText;
  transferable.setTransferData("text/plain", ssText);

  // Store the data into the clipboard.
  Services.clipboard.setData(
    transferable,
    null,
    Services.clipboard.kGlobalClipboard
  );
}

// Return the plain text representation of an element.  Do a little bit
// of pretty-printing to make it human-readable.
function createTextForElement(elem) {
  let serializer = new Serializer();
  let text = serializer.serialize(elem);

  // Actual CR/LF pairs are needed for some Windows text editors.
  if (AppConstants.platform == "win") {
    text = text.replace(/\n/g, "\r\n");
  }

  return text;
}

function Serializer() {}

Serializer.prototype = {
  serialize(rootElem) {
    this._lines = [];
    this._startNewLine();
    this._serializeElement(rootElem);
    this._startNewLine();
    return this._lines.join("\n").trim() + "\n";
  },

  // The current line is always the line that writing will start at next.  When
  // an element is serialized, the current line is updated to be the line at
  // which the next element should be written.
  get _currentLine() {
    return this._lines.length ? this._lines[this._lines.length - 1] : null;
  },

  set _currentLine(val) {
    this._lines[this._lines.length - 1] = val;
  },

  _serializeElement(elem) {
    // table
    if (elem.localName == "table") {
      this._serializeTable(elem);
      return;
    }

    // all other elements

    let hasText = false;
    for (let child of elem.childNodes) {
      if (child.nodeType == Node.TEXT_NODE) {
        let text = this._nodeText(child);
        this._appendText(text);
        hasText = hasText || !!text.trim();
      } else if (child.nodeType == Node.ELEMENT_NODE) {
        this._serializeElement(child);
      }
    }

    // For headings, draw a "line" underneath them so they stand out.
    let isHeader = /^h[0-9]+$/.test(elem.localName);
    if (isHeader) {
      let headerText = (this._currentLine || "").trim();
      if (headerText) {
        this._startNewLine();
        this._appendText("-".repeat(headerText.length));
      }
    }

    // Add a blank line underneath elements but only if they contain text.
    if (hasText && (isHeader || "p" == elem.localName)) {
      this._startNewLine();
      this._startNewLine();
    }
  },

  _startNewLine() {
    let currLine = this._currentLine;
    if (currLine) {
      // The current line is not empty.  Trim it.
      this._currentLine = currLine.trim();
      if (!this._currentLine) {
        // The current line became empty.  Discard it.
        this._lines.pop();
      }
    }
    this._lines.push("");
  },

  _appendText(text) {
    this._currentLine += text;
  },

  _isHiddenSubHeading(th) {
    return th.parentNode.parentNode.hidden;
  },

  _serializeTable(table) {
    // Collect the table's column headings if in fact there are any.  First
    // check thead.  If there's no thead, check the first tr.
    let colHeadings = {};
    let tableHeadingElem = table.querySelector("thead");
    if (!tableHeadingElem) {
      tableHeadingElem = table.querySelector("tr");
    }
    if (tableHeadingElem) {
      let tableHeadingCols = tableHeadingElem.querySelectorAll("th,td");
      // If there's a contiguous run of th's in the children starting from the
      // rightmost child, then consider them to be column headings.
      for (let i = tableHeadingCols.length - 1; i >= 0; i--) {
        let col = tableHeadingCols[i];
        if (col.localName != "th" || col.classList.contains("title-column")) {
          break;
        }
        colHeadings[i] = this._nodeText(col).trim();
      }
    }
    let hasColHeadings = !!Object.keys(colHeadings).length;
    if (!hasColHeadings) {
      tableHeadingElem = null;
    }

    let trs = table.querySelectorAll("table > tr, tbody > tr");
    let startRow =
      tableHeadingElem && tableHeadingElem.localName == "tr" ? 1 : 0;

    if (startRow >= trs.length) {
      // The table's empty.
      return;
    }

    if (hasColHeadings) {
      // Use column headings.  Print each tr as a multi-line chunk like:
      //   Heading 1: Column 1 value
      //   Heading 2: Column 2 value
      for (let i = startRow; i < trs.length; i++) {
        let children = trs[i].querySelectorAll("td");
        for (let j = 0; j < children.length; j++) {
          let text = "";
          if (colHeadings[j]) {
            text += colHeadings[j] + ": ";
          }
          text += this._nodeText(children[j]).trim();
          this._appendText(text);
          this._startNewLine();
        }
        this._startNewLine();
      }
      return;
    }

    // Don't use column headings.  Assume the table has only two columns and
    // print each tr in a single line like:
    //   Column 1 value: Column 2 value
    for (let i = startRow; i < trs.length; i++) {
      let children = trs[i].querySelectorAll("th,td");
      let rowHeading = this._nodeText(children[0]).trim();
      if (children[0].classList.contains("title-column")) {
        if (!this._isHiddenSubHeading(children[0])) {
          this._appendText(rowHeading);
        }
      } else if (children.length == 1) {
        // This is a single-cell row.
        this._appendText(rowHeading);
      } else {
        let childTables = trs[i].querySelectorAll("table");
        if (childTables.length) {
          // If we have child tables, don't use nodeText - its trs are already
          // queued up from querySelectorAll earlier.
          this._appendText(rowHeading + ": ");
        } else {
          this._appendText(rowHeading + ": ");
          for (let k = 1; k < children.length; k++) {
            let l = this._nodeText(children[k]).trim();
            if (l == "") {
              continue;
            }
            if (k < children.length - 1) {
              l += ", ";
            }
            this._appendText(l);
          }
        }
      }
      this._startNewLine();
    }
    this._startNewLine();
  },

  _nodeText(node) {
    return node.textContent.replace(/\s+/g, " ");
  },
};

function openProfileDirectory() {
  // Get the profile directory.
  let currProfD = Services.dirsvc.get("ProfD", Ci.nsIFile);
  let profileDir = currProfD.path;

  // Show the profile directory.
  let nsLocalFile = Components.Constructor(
    "@mozilla.org/file/local;1",
    "nsIFile",
    "initWithPath"
  );
  new nsLocalFile(profileDir).reveal();
}

/**
 * Profile reset is only supported for the default profile if the appropriate migrator exists.
 */
function populateActionBox() {
  if (ResetProfile.resetSupported()) {
    $("reset-box").hidden = false;
  }
  // tor-browser#41755: Do not show safe mode, as it would disable NoScript.
  /*if (!Services.appinfo.inSafeMode && AppConstants.platform !== "android") {
    $("safe-mode-box").hidden = false;

    if (Services.policies && !Services.policies.isAllowed("safeMode")) {
      $("restart-in-safe-mode-button").setAttribute("disabled", "true");
    }
  }*/
}

// Prompt user to restart the browser in safe mode
function safeModeRestart() {
  let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"].createInstance(
    Ci.nsISupportsPRBool
  );
  Services.obs.notifyObservers(
    cancelQuit,
    "quit-application-requested",
    "restart"
  );

  if (!cancelQuit.data) {
    Services.startup.restartInSafeMode(Ci.nsIAppStartup.eAttemptQuit);
  }
}
/**
 * Set up event listeners for buttons.
 */
function setupEventListeners() {
  let button = $("reset-box-button");
  if (button) {
    button.addEventListener("click", function () {
      ResetProfile.openConfirmationDialog(window);
    });
  }
  button = $("clear-startup-cache-button");
  if (button) {
    button.addEventListener("click", async function () {
      const [promptTitle, promptBody, restartButtonLabel] =
        await document.l10n.formatValues([
          { id: "startup-cache-dialog-title2" },
          { id: "startup-cache-dialog-body2" },
          { id: "restart-button-label" },
        ]);
      const buttonFlags =
        Services.prompt.BUTTON_POS_0 * Services.prompt.BUTTON_TITLE_IS_STRING +
        Services.prompt.BUTTON_POS_1 * Services.prompt.BUTTON_TITLE_CANCEL +
        Services.prompt.BUTTON_POS_0_DEFAULT;
      const result = Services.prompt.confirmEx(
        window.docShell.chromeEventHandler.documentGlobal,
        promptTitle,
        promptBody,
        buttonFlags,
        restartButtonLabel,
        null,
        null,
        null,
        {}
      );
      if (result !== 0) {
        return;
      }
      Services.appinfo.invalidateCachesOnRestart();
      Services.startup.quit(
        Ci.nsIAppStartup.eRestart | Ci.nsIAppStartup.eAttemptQuit
      );
    });
  }
  button = $("restart-in-safe-mode-button");
  if (button) {
    button.addEventListener("click", function () {
      if (
        Services.obs
          .enumerateObservers("restart-in-safe-mode")
          .hasMoreElements()
      ) {
        Services.obs.notifyObservers(
          window.docShell.chromeEventHandler.documentGlobal,
          "restart-in-safe-mode"
        );
      } else {
        safeModeRestart();
      }
    });
  }
  if (AppConstants.MOZ_UPDATER) {
    button = $("update-dir-button");
    if (button) {
      button.addEventListener("click", function () {
        // Get the update directory.
        let updateDir = Services.dirsvc.get("UpdRootD", Ci.nsIFile);
        if (!updateDir.exists()) {
          updateDir.create(Ci.nsIFile.DIRECTORY_TYPE, 0o755);
        }
        let updateDirPath = updateDir.path;
        // Show the update directory.
        let nsLocalFile = Components.Constructor(
          "@mozilla.org/file/local;1",
          "nsIFile",
          "initWithPath"
        );
        new nsLocalFile(updateDirPath).reveal();
      });
    }
    button = $("show-update-history-button");
    if (button) {
      button.addEventListener("click", function () {
        window.browsingContext.topChromeWindow.openDialog(
          "chrome://mozapps/content/update/history.xhtml",
          "Update:History",
          "centerscreen,resizable=no,titlebar,modal"
        );
      });
    }
  }
  button = $("verify-place-integrity-button");
  if (button) {
    button.addEventListener("click", function () {
      PlacesDBUtils.checkAndFixDatabase().then(tasksStatusMap => {
        let logs = [];
        for (let [key, value] of tasksStatusMap) {
          logs.push(`> Task: ${key}`);
          let prefix = value.succeeded ? "+ " : "- ";
          logs = logs.concat(value.logs.map(m => `${prefix}${m}`));
        }
        $("verify-place-result").hidden = false;
        $("verify-place-result").classList.remove("no-copy");
        $("verify-place-result").textContent = logs.join("\n");
      });
    });
  }

  $("copy-raw-data-to-clipboard").addEventListener("click", function () {
    copyRawDataToClipboard(this);
  });
  $("copy-to-clipboard").addEventListener("click", function () {
    copyContentsToClipboard();
  });
  if (AppConstants.platform != "android") {
    $("profile-dir-button").addEventListener("click", function () {
      openProfileDirectory();
    });
  }
}

/**
 * Scroll to section specified by location.hash
 */
function scrollToSection() {
  const id = location.hash.substr(1);
  const elem = $(id);

  if (elem) {
    elem.scrollIntoView();
  }
}
