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

with lib;

let
  defaultEncrypt = pkgs.emacsPackages.trivialBuild rec {
    pname = "defaultencrypt";
    version = "ba07acc8e9fd692534c39c7cdad0a19dc0d897d9";

    src = pkgs.fetchFromGitLab {
      owner = "lechten";
      repo = pname;
      rev = version;
      sha256 = "1ln7h1syx7yi7bqvirv90mk4rvwxg4zm1wvfcvhfh64s3hqrbfgl";
    };
  };
in mkIf (elem "emacs::mu4e" config.machine.pkgs) {
  programs.emacs.init.usePackage.pinentry = {
    enable = true;
    command = [ "pinentry-start" ];
    hook = [ "(after-init . pinentry-start)" ];
  };

  programs.emacs.init.usePackage.mu4e = {
    enable = true;
    package = epkgs: null;
    command = [ "mu4e" ];
    diminish = [ "mu4e-mode" ];
    hook = [
      "(mu4e-view-mode . visual-line-mode)"
      "(mu4e-compose-mode . flyspell-mode)"
      ''(message-send . (lambda ()
          (unless (yes-or-no-p "Send this message?")
          (signal 'quit nil))))''
    ];
    bind = { "\t" = "'company-complete-common"; };
    bindLocal = rec {
      mu4e-headers-mode-map = {
        "C-+" = "nil";
        "C--" = "nil";
      };
      mu4e-view-mode-map = mu4e-headers-mode-map;
    };
    init = ''
      (add-to-list 'load-path "${defaultEncrypt}/share/emacs/site-lisp")
      (require 'jl-encrypt)
    '';
    config = ''
      (setq mail-user-agent 'mu4e-user-agent)
      (setq org-mu4e-link-query-in-headers-mode t)
      (setq mu4e-maildir "~/.mail/Mail")
      (setq mu4e-get-mail-command "${pkgs.isync}/bin/mbsync -a")
      (setq mu4e-context-policy 'pick-first)
      (setq mu4e-change-filenames-when-moving t)
      (setq starttls-use-gnutls t)
      (setq message-send-mail-function 'smtpmail-send-it)
      (setq mu4e-update-interval 300)
      (setq mu4e-use-fancy-chars t)
      (setq mu4e-view-show-addresses t)
      (setq mu4e-headers-show-threads t)
      (setq mu4e-headers-skip-duplicates t)
      (setq mail-user-agent 'mu4e-user-agent)
      (defvaralias 'mu4e-compose-signature 'message-signature)
      (setq-default mu4e-save-multiple-attachments-without-asking t)
      (setq-default mu4e-view-show-addresses t)
      (setq-default mu4e-confirm-quit nil)
      (setq-default mu4e-hide-index-messages t)
      (setq-default mu4e-index-update-in-background t)
      (setq mu4e-compose-in-new-frame nil)

      ;;rename files when moving
      ;;NEEDED FOR MBSYNC
      (setq mu4e-change-filenames-when-moving t)

      (setq mu4e-html2text-command "iconv -c -t utf-8 | ${pkgs.pandoc}/bin/pandoc -f html -t plain")
      (setq mu4e-view-show-images t)
      (when (fboundp 'imagemagick-register-types)
        (imagemagick-register-types))
      (setq message-kill-buffer-on-exit t)

      ;; Encryption Stuff
      (setq mml-secure-openpgp-sign-with-sender t)
      ;; (setq mm-sign-option ‘guided’)
      (setq epa-pinentry-mode 'loopback)
      ;; mailAcc config goes here
      (load-file "~/.emacs.d/mu4e.el")

      (defun my-browse-url-firefox-privately (url &optional new-window)
        "Make firefox open URL in private-browsing window."
        (interactive (browse-url-interactive-arg "URL: "))
        (let ((process-environment (browse-url-process-environment)))
          (apply 'start-process
                 (concat "firefox " url)
                 nil
                 browse-url-firefox-program
                 (list "-private-window" url))))
      (setq browse-url-browser-function 'my-browse-url-firefox-privately)
      (add-to-list 'mu4e-view-actions
	           '("ViewInBrowser" . mu4e-action-view-in-browser) t)
    '';
    extraConfig = ''
      :load-path "${pkgs.mu}/share/emacs/site-lisp/mu4e"
    '';
  };

  programs.emacs.init.usePackage.mu4e-alert = {
    enable = true;
#    hook = [ "after-init . mu4e-alert-enable-mode-line-display" ];
  };

#  programs.emacs.init.usePackage.org-mu4e = {
#    enable = (elem "emacs::org" config.machine.pkgs);
#  };

  environment.systemPackages = with pkgs; [
    mu
    isync
  ];
}