{ pkgs, ... }:
let
  mailcap = pkgs.writeText "mailcap" ''
    text/html; ${pkgs.w3m}/bin/w3m -I %{charset} -T text/html; copiousoutput;
    image/*; ${pkgs.imv}/bin/imv %s
  '';
  molokai = pkgs.writeText "molokai.muttrc" ''
    # color setup
    #
    # ======================================================================
    # INDEX OBJECT     PATTERN?      pattern description
    # index            pattern               default highlighting of the entire index line
    # index_date                             the date field
    # index_flags      pattern       %S %Z   the message flags
    # index_number                   %C      the message number
    # index_collapsed                %M      the number of messages in a collapsed thread
    # index_author     pattern       %AaFLn  the author name
    # index_subject    pattern       %s      the subject line
    # index_size                     %c %l   the message size
    # index_label                    %y %Y   the message label
    # index_tags                     %g      the transformed message tags
    # index_tag        pattern/tag   %G      an individual message tag
    # ======================================================================

    color	normal				default		default
    color	index_number			brightblack	default
    color	index_date			magenta		default
    color	index_flags			yellow		default		.
    color	index_collapsed			cyan		default
    color	index				green		default		~N
    color	index				green		default		~v~(~N)
    color	index				red		default		~F
    color	index				cyan		default		~T
    color	index				blue		default		~D
    color	index_label			brightred	default
    color	index_tags			red		default
    color	index_tag			brightmagenta	default		"encrypted"
    color	index_tag			brightgreen	default		"signed"
    color	index_tag			yellow		default		"attachment"
    color	body				brightwhite	default		([a-zA-Z\+]+)://[\-\.,/%~_:?&=\#a-zA-Z0-9]+	# urls
    color	body				green		default		[\-\.+_a-zA-Z0-9]+@[\-\.a-zA-Z0-9]+		# mail addresses
    color	attachment			yellow		default
    color	signature			green		default
    color	search				brightred	black

    color	indicator			cyan		brightblack
    color	error				brightred	default
    color	status				brightcyan	brightblack
    color	tree				brightcyan	default
    color	tilde				cyan		default
    color	progress			white		red

    color	sidebar_indicator		brightred	default
    color	sidebar_highlight		cyan		brightblack
    color	sidebar_divider			red		default
    color	sidebar_flagged			red		default
    color	sidebar_new			green		default

    color	hdrdefault			color81		default
    color	header				green		default		"^Subject: .*"
    color	header				yellow		default		"^Date: .*"
    color	header				red		default		"^Tags: .*"

    color	quoted				color60		default
    color	quoted1				yellow		default

    color	body				brightgreen	default		"Good signature from.*"
    color	body				green		default		"Fingerprint:( [A-Z0-9]{4}){5} ( [A-Z0-9]{4}){5}"
    color	body				brightred	default		"Bad signature from.*"
    color	body				brightred	default		"Note: This key has expired!"
    color	body				brightmagenta	default		"Problem signature from.*"
    color	body				brightmagenta	default		"WARNING: .*"

    color	compose header			color81		default
    color	compose security_both		brightgreen	default
    color	compose security_sign		brightmagenta	default
    color	compose security_encrypt	brightyellow	default
    color	compose security_none		brightred	default
  '';
in
{
  services.imapnotify.enable = true;
  programs.mbsync.enable = true;
  programs.notmuch = {
    enable = true;
  };
  programs.neomutt = {
    enable = true;
    vimKeys = true;
    sidebar = {
      enable = true;
    };
    binds = [
      {
        key = "\\CA";
        action = "sidebar-next";
        map = [ "index" "pager" ];
      }
      {
        key = "\\CL";
        action = "sidebar-prev";
        map = [ "index" "pager" ];
      }
      {
        key = "\\CP";
        action = "sidebar-open";
        map = [ "index" "pager" ];
      }
      {
        key = "<Return>"; # what the fuck is this mapping
        action = "display-message";
        map = [ "index" ];
      }
      {
        key = "\\CV";
        action = "display-message"; # i give up
        map = [ "index" ];
      }
    ];
    extraConfig = ''
      virtual-mailboxes "To Do" "notmuch://?query=tag:todo"
      virtual-mailboxes "To Read" "notmuch://?query=tag:toread"
      virtual-mailboxes "Blocked" "notmuch://?query=tag:blocked"
      virtual-mailboxes "Archive" "notmuch://?query=tag:archive"
      macro index,pager A "<modify-labels-then-hide>+archive -unread -inbox\n"
      bind index,pager y modify-labels
      set mailcap_path = ${mailcap}
      source ${molokai}
    '';
  };
  programs.msmtp.enable = true;
}