{ config, lib, ... }:
with lib;
let
    cfg = config.email;
in
{
    options.email = {
        enable = lib.mkEnableOption "Allow sending system status e-mails via sendmail";
        fromAddress = mkOption {
            type = types.str;
            example = "noreply@example.com";
            description = ''
                E-Mail address automated e-mails are sent from.
            '';
        };
        fromIdentity = mkOption {
            type = types.str;
            default = "${config.networking.hostName} <${config.email.fromAddress}>";
            example = "Maintenance (no reply) <noreply@example.com>";
            description = ''
                E-Mail identity automated e-mails are sent from.
            '';
        };
        adminEmail = mkOption {
            type = types.str;
            example = "admin@example.com";
            description = ''
                E-Mail address automated e-mails are sent to.
            '';
        };
    };

    config.programs.msmtp = lib.mkIf cfg.enable {
        enable = true;
        setSendmail = true;
        accounts = {
            default = {
                auth = true;
                host = "gvfr.de";
                passwordeval = "cat /secrets/email_password.txt";
                user = cfg.fromAddress;
                from = cfg.fromAddress;
                port = 465;
                tls = true;
                tls_starttls = false;
            };
        };
    };
}