package Trog::Email;

use 5.040;
use re '/aa';

use Email::MIME;
use Email::Sender::Simple;

use Trog::Auth;
use Trog::Log qw{:all};
use Trog::Renderer;

=head1 Trog::Email

Sending mail out of tCMS.

=head1 Termination Conditions

Dies when asked to mail a user who has no contact email set on their profile.
Failure to actually send is logged as FATAL rather than thrown, as by then the
message has already been built and there's nothing the caller can do about it.

=head1 FUNCTIONS

=head2 contact(STRING user, STRING from, STRING subject, HASHREF data) = BOOL

Send a templated message to a user's contact email.

$data must have a 'template' key naming the template to render; everything else
in it is passed through to that template as its data.  The template is rendered
twice, once as text and once as HTML, and both are attached to a multipart
message so that the recipient's client can pick whichever it prefers.

Returns 1.

=cut

sub contact ( $user, $from, $subject, $data ) {
    my $email = Trog::Auth::email4user($user);
    die "No contact email set for user $user!" unless $email;

    my $render = Trog::Renderer->render(
        contenttype => 'multipart/related',
        code        => 200,
        template    => $data->{template},
        data        => {
            method => 'EMAIL',

            # Important - this will prevent caching
            route => '',
            %$data,
        },
    );

    my $text = $render->{text}[2][0];
    my $html = $render->{html}[2][0];

    my @parts = (
        Email::MIME->create(
            attributes => {
                content_type => "text/plain",
                disposition  => "attachment",
                charset      => 'UTF-8',
            },
            body => $text,
        ),
        Email::MIME->create(
            attributes => {
                content_type => "text/html",
                disposition  => "attachment",
                charset      => "UTF-8",
            },
            body => $html,
        ),
    );

    my $mail = Email::MIME->create(
        header_str => [
            From    => $from,
            To      => [$email],
            Subject => $subject,
        ],
        parts => \@parts,
    );

    Email::Sender::Simple->try_to_send($mail) or do {
        FATAL("Could not send email from $from to $email!");
    };
    return 1;
}

1;