nixos-config/modules/system/services/server/nginx/virtualhosts/p2/default.nix

{ config, lib, ... }:
{
  services.nginx.virtualHosts."${config.domains.p2}" = lib.mkIf config.system.server.enable {
    enableACME = true;
    addSSL = true;
    root = "/var/www/landing-page";
    locations = {
      "/.well-known/matrix/client".extraConfig = ''
        default_type application/json;
        return 200 '
          {
            "m.homeserver": {
              "base_url": "https://matrix.${config.domains.p2}"
            },
            "m.identity_server": {
              "base_url": "https://matrix.org"
            },
            "org.matrix.msc3575.proxy": {
              "url": "https://matrix.${config.domains.p2}"
            }
          }
        ';
      '';

      "/.well-known/matrix/server".extraConfig = ''
        default_type application/json;
        return 200 '{ "m.server": "matrix.${config.domains.p2}:443" }';
      '';
    };
  };
}