firefox-mobile: update and refactor (#418920)

let

  pkg = fetchFromGitLab {

    domain = "gitlab.postmarketos.org";

    owner = "postmarketOS";

    repo = "mobile-config-firefox";

    rev = "ff2f07873f4ebc6e220da0e9b9f04c69f451edda";

    sha256 = "sha256-8wRz8corz00+0qROMiOmZAddM4tjfmE91bx0+P8JNx4=";

    rev = "4.6.0";

    hash = "sha256-tISfxN/04spgtKStkkn+zlCtFU6GbtwuZubqpGN2olA=";

  };

  userChrome = runCommand "userChrome.css" { } ''

    cat ${pkg}/src/userChrome/*.css > $out

  '';

  userContent = runCommand "userContent.css" { } ''

    cat ${pkg}/src/userContent/*.css > $out

  '';

in

wrapFirefox firefox-unwrapped {

  # extraPolicies = (lib.importJSON "${pkg}/src/policies.json").policies;

  extraPoliciesFiles = [ "${pkg}/src/policies.json" ];

  extraPrefs = ''

    // Copyright 2022 Arnaud Ferraris, Oliver Smith

    // SPDX-License-Identifier: MPL-2.0

    // This is a Firefox autoconfig file:

    // https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig

    // Import custom userChrome.css on startup or new profile creation

    const {classes: Cc, interfaces: Ci, utils: Cu} = Components;

    Cu.import("resource://gre/modules/Services.jsm");

    Cu.import("resource://gre/modules/FileUtils.jsm");

    var updated = false;

    // Create <profile>/chrome/ directory if not already present

    var chromeDir = Services.dirsvc.get("ProfD", Ci.nsIFile);

    chromeDir.append("chrome");

    if (!chromeDir.exists()) {

        chromeDir.create(Ci.nsIFile.DIRECTORY_TYPE, FileUtils.PERMS_DIRECTORY);

    }

    // Create nsIFile objects for userChrome.css in <profile>/chrome/ and in /etc/

    var chromeFile = chromeDir.clone();

    chromeFile.append("userChrome.css");

    var defaultChrome = new FileUtils.File("${userChrome}");

    // No auto-upgrade. Should this be replaced with symlinking?

    // // Remove the existing userChrome.css if older than the installed one

    // if (chromeFile.exists() && defaultChrome.exists() &&

    //   chromeFile.lastModifiedTime < defaultChrome.lastModifiedTime) {

    //   chromeFile.remove(false);

    // }

    // Copy userChrome.css to <profile>/chrome/

    if (!chromeFile.exists()) {

      defaultChrome.copyTo(chromeDir, "userChrome.css");

      updated = true;

    }

  mobileConfigDir = runCommand "mobile-config-firefox" { } ''

    mkdir -p $out/mobile-config-firefox/{common,userChrome,userContent}

    // Create nsIFile objects for userContent.css in <profile>/chrome/ and in /etc/

    var contentFile = chromeDir.clone();

    contentFile.append("userContent.css");

    var defaultContent = new FileUtils.File("${userContent}");

    cp ${pkg}/src/common/*.css $out/mobile-config-firefox/common/

    cp ${pkg}/src/userChrome/*.css $out/mobile-config-firefox/userChrome/

    cp ${pkg}/src/userContent/*.css $out/mobile-config-firefox/userContent/

    // No auto-upgrade. Should this be replaced with symlinking?

    // // Remove the existing userContent.css if older than the installed one

    // if (contentFile.exists() && defaultContent.exists() &&

    //   contentFile.lastModifiedTime < defaultContent.lastModifiedTime) {

    //   contentFile.remove(false);

    // }

    (cd $out/mobile-config-firefox && find common -name "*.css" | sort) >> $out/mobile-config-firefox/userChrome.files

    (cd $out/mobile-config-firefox && find common -name "*.css" | sort) >> $out/mobile-config-firefox/userContent.files

    // Copy userContent.css to <profile>/chrome/

    if (!contentFile.exists()) {

      defaultContent.copyTo(chromeDir, "userContent.css");

      updated = true;

    }

    // Restart Firefox immediately if one of the files got updated

    if (updated === true) {

        var appStartup = Cc["@mozilla.org/toolkit/app-startup;1"].getService(Ci.nsIAppStartup);

        appStartup.quit(Ci.nsIAppStartup.eForceQuit | Ci.nsIAppStartup.eRestart);

    }

    defaultPref('general.useragent.override', 'Mozilla/5.0 (Android 11; Mobile; rv:96.0) Gecko/96.0 Firefox/96.0');

    defaultPref('browser.urlbar.suggest.topsites', false);

    defaultPref('browser.urlbar.suggest.engines', false);

    defaultPref('browser.newtabpage.enabled', true);

    // Enable android-style pinch-to-zoom

    pref('dom.w3c.touch_events.enabled', true);

    pref('apz.allow_zooming', true);

    pref('apz.allow_double_tap_zooming', true);

    // Save vertical space by hiding the titlebar

    pref('browser.tabs.inTitlebar', 1);

    // Disable search suggestions

    pref('browser.search.suggest.enabled', false);

    (cd $out/mobile-config-firefox && find userChrome -name "*.css" | sort) > $out/mobile-config-firefox/userChrome.files

    (cd $out/mobile-config-firefox && find userContent -name "*.css" | sort) > $out/mobile-config-firefox/userContent.files

    // Empty new tab page: faster, less distractions

    pref('browser.newtabpage.enabled', false);

    // Allow UI customizations with userChrome.css and userContent.css

    pref('toolkit.legacyUserProfileCustomizations.stylesheets', true);

    // Select the entire URL with one click

    pref('browser.urlbar.clickSelectsAll', true);

  '';

    // Disable cosmetic animations, save CPU

    pref('toolkit.cosmeticAnimations.enabled', false);

  mobileConfigAutoconfig = runCommand "mobile-config-autoconfig.js" { } ''

    substitute ${pkg}/src/mobile-config-autoconfig.js $out \

      --replace "/etc/mobile-config-firefox" "${mobileConfigDir}/mobile-config-firefox"

  '';

    // Disable download animations, save CPU

    pref('browser.download.animateNotifications', false);

  mobileConfigPrefs = runCommand "mobile-config-prefs.js" { } ''

    # Remove the autoconfig setup lines since we handle that through extraPrefsFiles

    grep -v "general.config.filename" ${pkg}/src/mobile-config-prefs.js | \

    grep -v "general.config.obscure_value" | \

    grep -v "general.config.sandbox_enabled" > $out

  '';

in

wrapFirefox firefox-unwrapped {

  extraPrefsFiles = [

    mobileConfigAutoconfig

    mobileConfigPrefs

  ];

  extraPoliciesFiles = [

    "${pkg}/src/policies.json"

  ];

}