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# Static web and gemini hosting
# Copyright (C) 2022  Nguyễn Gia Phong
#
# This file is part of loang configuration.
#
# Loang configuration is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Loang configuration is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with loang configuration.  If not, see <https://www.gnu.org/licenses/>.

{ config, lib, ... }:
let
  inherit (config.networking) domain;
  bindUserDirs = sources: target: lib.mapAttrs' (user: dir: {
    name = target + user;
    value = {
      device = "${config.users.users.${user}.home}/${dir}";
      options = [ "bind" ];
    };
  }) sources;
  phylactery = config.services.phylactery;
in {
  fileSystems = bindUserDirs {
    cnx = "www";
  } "${config.services.nginx.virtualHosts.${domain}.root}/~";

  networking.firewall.allowedTCPPorts = [
    80 # HTTP
    443 # TLS
    1965 # Gemini
  ];

  security.acme = {
    acceptTerms = true;
    defaults.email = "mcsinyx@disroot.org";
  };

  services = {
    molly-brown = let certDir = config.security.acme.certs.${domain}.directory;
    in {
      certPath = "${certDir}/cert.pem";
      docBase = "/var/lib/gemini/${domain}";
      enable = true;
      hostName = domain;
      keyPath = "${certDir}/key.pem";
    };

    nginx = {
      enable = true;
      enableReload = true;
      recommendedGzipSettings = true;
      recommendedOptimisation = true;
      recommendedProxySettings = true;
      recommendedTlsSettings = true;
      virtualHosts = {
        ${domain} = {
          enableACME = true;
          forceSSL = true;
          locations."/".index = "index.xhtml";
          root = "/var/lib/www/${domain}";
        };

        "septagram.suricrasia.online" = {
          enableACME = true;
          extraConfig = ''
            autoindex on;
          '';
          forceSSL = true;
          root = "/var/lib/www/septagram.suricrasia.online";
        };
      } // (let aliasOpenNIC = openNIC: icann: config: {
        ${openNIC} = {
          # https://wiki.opennic.org/opennic/tls
          addSSL = true;
          useACMEHost = icann;
        } // config;
        ${icann} = {
          enableACME = true;
          forceSSL = true;
        } // config;
      };
      in (aliasOpenNIC "cercle.libre" "khoanh.${domain}" {
        root = "/var/lib/www/cercle.libre";
      }) // (aliasOpenNIC "sinyx.indy" "cnx.gdn" {
        root = "/var/lib/www/cnx.gdn";
      }) // (aliasOpenNIC "pix.sinyx.indy" "px.cnx.gdn" {
        locations = {
          "/".index = "index.xhtml";
          "~ /index.xhtml$".extraConfig = ''
            expires -1;
          '';
        };
        root = "/var/lib/www/px.cnx.gdn";
      }) // (aliasOpenNIC "striproman.pirate" "cmx.cnx.gdn" (let
        address = "http://${phylactery.host}:${toString phylactery.port}";
      in {
        locations."/".proxyPass = address;
      })));
    };

    phylactery = {
      enable = true;
      library = "/mnt/nas/comix";
      port = 42069;
    };
  };

  systemd.services.molly-brown.serviceConfig.SupplementaryGroups = [
    config.security.acme.certs.${domain}.group
  ];
}