stubbfelnix/module/news2kindle/news2kindle.nix

{ config, lib, pkgs, fetchurl, ... }:

with lib;

let

  cfg  = config.services.news2kindle;

portString = toString cfg.smtp.port;

  convertScript = pkgs.writeText "convertScript.sh" ''#!/bin/bash
NAME=$1
RECIPEPATH=$2
MOBIPATH=$3
FROMADDR=$4
TOADDR=$5
if [ ! -f mobi/$NAME.mobi ]; then
 ebook-convert $RECIPEPATH/$NAME.recipe $MOBIPATH/$NAME.mobi --output-profile kindle -v
fi

mailsend -smtp ${cfg.smtp.address} -port ${portString} -from $FROMADDR -to $TOADDR -sub "New news from $NAME" -attach $MOBIPATH/$NAME.mobi
sleep 60
'';

callConvertScripts =
    let
      makeCallLine = recipient:
        map (makeCallLineRecipe recipient.mail) recipient.recipes;
     makeCallLineRecipe = recipientMail: recipe:
        if isNull recipe.content then
            "bash ${convertScript} ${recipe.name}  ${calibreWithRecipes}/var/news2kindle/recipes ${cfg.mobiPath} ${cfg.fromMail} ${recipientMail}\n"
        else
            ''
             mkdir  -p /tmp/news2kindle/recipes
             echo "${recipe.content}" > /tmp/news2kindle/recipes/${recipe.name}.recipe
             bash ${convertScript} ${recipe.name} /tmp/news2kindle/recipes/ ${cfg.mobiPath} ${cfg.fromMail} ${recipientMail}
            '';
    in
      concatMap makeCallLine cfg.recipients;

dailyUpdateScript = pkgs.writeText "dailyUpdates.sh" ''#!/bin/bash
      rm -f ${cfg.mobiPath}/*.mobi
      mkdir -p ${cfg.mobiPath}
      ${concatStrings callConvertScripts}
      '';

odfpyNoTest = pkgs.python2Packages.odfpy.overrideAttrs (oldAttrs: rec {
    doInstallCheck = false;
});

calibreWithRecipes = pkgs.calibre.overrideAttrs (oldAttrs: rec {
    installPhase = ''
    mkdir -p $out/var/news2kindle/recipes
    cp -ravf recipes $out/var/news2kindle
    ''+ oldAttrs.installPhase ;

    buildInputs = (remove pkgs.python2Packages.odfpy oldAttrs.buildInputs) ++ [odfpyNoTest];

#    patches = oldAttrs.patches ++  [./calibre-disable_plugins.patch];
    patches = [./calibre-disable_plugins.patch];

});


in

{
  ###### interface

  options = {

    services.news2kindle = {

      enable = mkOption {
        type = types.bool;
        default = false;
        description = ''
          Whether to enable news2kindle service.
        '';
      };

      recipePath = mkOption {
        example = "/var/news2kindle/recipes";
        default = "/var/news2kindle/recipes";
        type = types.str;
        description = ''
          Path where the recipes should be saved
        '';
      };

      mobiPath = mkOption {
        example = "/tmp/news2kindle/mobi";
        default = "/tmp/news2kindle/mobi";
        type = types.str;
        description = ''
          Path where the mobi files should be saved
        '';
      };

      fromMail = mkOption {
        example = "news@stubbe.rocks";
        default = "news@stubbe.rocks";
        type = types.str;
        description = ''
          Adrees of the  sender, please allow this mail in your kindle doc service
        '';
      };


      recipients = mkOption {
        type = with types; listOf (submodule {
            options = {
              mail = mkOption {
                type = types.str;
                default = null;
                description = ''
                  name of recipe
                '';
                  };
                  recipes = mkOption {
                    type = with types; listOf (submodule {
                      options = {
                        name = mkOption {
                          type = types.str;
                          default = null;
                          description = ''
                            name of recipe
                          '';
                        };
                        content = mkOption {
                          type = types.nullOr types.str;
                          default = null;
                          description = ''
                            content of the recipe file, when its null the use the  builtins recipes
                          '';
                        };
                      };
                    });
                    default = [];
                    example = [ { name = "heise";} { name = "Postillon"; port = ''
              class BasicUserRecipe1414943033(AutomaticNewsRecipe):
                  title = u'Postillon'
                  oldest_article = 7
                  max_articles_per_feed = 100
                  auto_cleanup = True
                  feeds= [(u'Postilion', u'http://feeds.feedburner.com/blogspot/rkEL')] ''; } ];
                    description = ''
                      List of recipes wich the user wants fetch. If recipe content is not specified the fetcher uses builtins recipes
                    '';
                  };
              };
          });
          default = [];
      };

      smtp = {

          address = mkOption {
            type = types.str;
            default = "localhost";
            description = "Address of the SMTP server for news2kindle.";
          };

          port = mkOption {
            type = types.int;
            default = 25;
            description = "Port of the SMTP server for news2kindle.";
          };

          username = mkOption {
            type = types.nullOr types.str;
            default = null;
            description = "Username of the SMTP server for news2kindle.";
          };

          password = mkOption {
            type = types.nullOr types.str;
            default = null;
            description = "Password of the SMTP server for news2kindle.";
          };
      };

    };

  };


  ###### implementation

  config =  mkIf cfg.enable{
      environment.systemPackages = [pkgs.python27Packages.pyqt5 pkgs.python36Packages.pyqt5 pkgs.mailsend calibreWithRecipes];
      services.cron.enable = true;
      services.cron.systemCronJobs = [ "0 5 * * * root bash ${dailyUpdateScript}"];
  };
}