package JWebmail::Model::ReadMails::MockJSON;

use v5.24;
use warnings;
use utf8;
use autodie;

use List::Util 'sum';
use JSON::PP 'decode_json';

use Digest::HMAC_MD5 'hmac_md5_hex';
use Role::Tiny::With;

use namespace::clean;

use constant {
    VALID_USER => 'mockjson@example.com',
    VALID_PW   => 'vwxyz',
};

with 'JWebmail::Model::ReadMails::Role';


sub new { bless {}, shift }

sub _read_json_file {
    my ($file_name) = @_;

    use constant PREFIX => 't/private/';

    open my $body_file, '<', PREFIX . $file_name;
    local $/;
    my $body = <$body_file>;
    close $body_file;

    return decode_json($body);
}

sub list_reply {
    state $init = _read_json_file('msgs.json');
}

sub read_reply {
    state $init = {
        'SC-ORD-MAIL54526c63b751646618a793be3f8329cca@sc-ord-mail5' => _read_json_file('msg2.json'),
        'example' => _read_json_file('msg.json'),
    };
}


sub verify_user {
    my $self = shift;
    my $auth = shift;

    if ($auth->{challenge}) {
        my $res = hmac_md5_hex($auth->{challenge}, VALID_PW);
        return $auth->{user} eq VALID_USER && $auth->{password} eq $res;
    }
    return $auth->{user} eq VALID_USER && $auth->{password} eq VALID_PW;
}

sub read_headers_for {
    my $self = shift;
    my $auth = shift;
    my %args = @_;

    my ($start, $end, $sort, $folder) = @args{qw(start end sort folder)};

    unless ($sort) {
        return [@{ $self->list_reply }[$start..$end]];
    }
    if ($folder eq 'test') {
        return [];
    }
    my $s = sub {
        my $sort_by = $sort;
        my $rev = $sort_by !~ m/^!/ ? 1 : -1;
        $sort_by =~ s/^!//;
        return (($a->{$sort_by}||$a->{head}{$sort_by}) cmp ($b->{$sort_by}||$b->{head}{$sort_by})) * $rev;
    };
    return [sort { &$s } @{ $self->list_reply }[$start..$end]];
}

sub count {
    my $self = shift;
    my $auth = shift;
    my $_folder = shift;

    return (
        sum(map {$_->{size}} @{ $self->list_reply }), # size
        scalar(@{ $self->list_reply }), # count
        0, # new
    );
}

sub show {
    my $self = shift;
    my $auth = shift;
    my $mid = shift;

    my $mail = $self->read_reply->{$mid};
    if ($mail) {
        return $mail;
    }
    else {
        die 'unknown mail-id';
    }
}

sub folders { ['', qw(cur test devel debug)] }

sub search { ... }
sub move { ... }


1

__END__

=head1 NAME

Mock - Simple file based mock for the L<JWebmail::Model::ReadMails> module.

=cut