{ blog-source, blog-source-localized, pkgs, katex-html }:

with pkgs;

let
  website = settings: stdenv.mkDerivation {
    inherit (settings) src ssl host;
    name = "blog-static";
    version = settings.src.rev;
    urlSub =
      let
        regexEscape = lib.escape [ "/" "(" ")" "[" "]" "+" "*" "\\" ];
      in
        with settings.replaceUrl; "s/${regexEscape from}/${regexEscape to}/g";
    publicPath = settings.path;
    extraFlags = (if settings.drafts then " -D " else "") + settings.extraFlags;
    builder = ./build/builder.sh;
    buildInputs = [
      hugo katex-html
    ];
  };
  wrapHost = ssl: host: (if ssl then "https" else "http") + "://${host}";
in
  {
    english = settings: website {
      inherit (settings) host;
      ssl = settings.ssl or false;
      drafts = settings.drafts or false;
      src = blog-source;
      path = ".";
      extraFlags = "--config=config.toml,config-gen.toml";
      replaceUrl = {
        from = "https://danilafe.com";
        to = wrapHost (settings.ssl or false) settings.host;
      };
    };
    russian = settings: website {
      inherit (settings) host;
      ssl = settings.ssl or false;
      drafts = settings.drafts or false;
      src = blog-source-localized;
      path = "ru";
      extraFlags = "";
      replaceUrl = {
        from = "https://ru.danilafe.com";
        to = wrapHost (settings.ssl or false) settings.host;
      };
    };
  }