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{ pkgs, ... }:
let
  sqlcipher-signal = pkgs.writeShellScriptBin "sqlcipher" ''
    set -eu

    readonly CFG=~/.config/Signal/config.json
    readonly KEY="$(${pkgs.jq}/bin/jq --raw-output '.key' $CFG)"
    readonly DB="$1"
    readonly SQL="SELECT * FROM sqlite_master where type='table'"
    ${pkgs.sqlcipher}/bin/sqlcipher "$DB" "PRAGMA key = \"x'$KEY'\"; $SQL"
  '';
in
{
  name = "signal-desktop";
  meta = with pkgs.lib.maintainers; {
    maintainers = [
      flokli
    ];
  };

  nodes.machine =
    { ... }:

    {
      imports = [
        ./common/user-account.nix
        ./common/x11.nix
      ];

      services.xserver.enable = true;
      test-support.displayManager.auto.user = "alice";
      environment.systemPackages = with pkgs; [
        signal-desktop
        file
        sqlite
        sqlcipher-signal
      ];
    };

  enableOCR = true;

  testScript =
    { nodes, ... }:
    let
      user = nodes.machine.users.users.alice;
    in
    ''
      start_all()
      machine.wait_for_x()

      # start signal desktop
      machine.execute("su - alice -c signal-desktop >&2 &")

      # Wait for the Signal window to appear. Since usually the tests
      # are run sandboxed and therefore with no internet, we can not wait
      # for the message "Link your phone ...". Nor should we wait for
      # the "Failed to connect to server" message, because when manually
      # running this test it will be not sandboxed.
      machine.wait_for_text("Signal")
      machine.wait_for_text("File Edit View Window Help")
      machine.screenshot("signal_desktop")

      # Test if the database is encrypted to prevent these issues:
      # - https://github.com/NixOS/nixpkgs/issues/108772
      # - https://github.com/NixOS/nixpkgs/pull/117555
      print(machine.succeed("su - alice -c 'file ~/.config/Signal/sql/db.sqlite'"))
      machine.fail(
          "su - alice -c 'file ~/.config/Signal/sql/db.sqlite' | grep -e SQLite -e database"
      )
      # Only SQLCipher should be able to read the encrypted DB:
      machine.fail(
          "su - alice -c 'sqlite3 ~/.config/Signal/sql/db.sqlite .tables'"
      )
      print(machine.succeed(
          "su - alice -c 'sqlcipher ~/.config/Signal/sql/db.sqlite'"
      ))
    '';
}