piped-flake/module/frontend.nix

{
  config,
  lib,
  ...
}: let
  inherit (lib.modules) mkIf;

  cfg = config.services.piped;

  frontendPackage =
    cfg.frontendPackage.override {backendDomain = cfg.backendDomain;};
in {
  config = mkIf (cfg.enable && !cfg.disableFrontend && !cfg.disableNginx) {
    # https://github.com/TeamPiped/Piped/blob/master/docker/nginx.conf
    services.nginx.virtualHosts."${cfg.frontendDomain}" = {
      forceSSL = cfg.nginxForceSSL;
      enableACME = cfg.nginxEnableACME;
      locations."/" = {
        root = "${frontendPackage}/share/piped-frontend";
        index = "index.html index.htm";
      };
      # I have no idea why try_files for Single Page Apps doesn't work here
      extraConfig = ''
        error_page 404 =200 /index.html;
      '';
    };
  };
}