package App::Changelord;

use 5.36.0;

use Moo;
use CLI::Osprey;
use YAML;

option source => (
    is => 'ro',
    doc => 'changelog yaml file',
    default => 'CHANGELOG.yml',
);

has changelog => (
    lazy => 1,
    is => 'ro',
    default => sub($self) {
        return YAML::LoadFile($self->source)
    }
);

sub render_header($self) {

    my $output = "# Changelog";

    my $name = $self->changelog->{project}{name};

    my %links = ();

    if( $self->changelog->{project}{homepage} ) {
        $name = "[$name][homepage]";
        $links{homepage} = $self->changelog->{project}{homepage};
    }

    $output .= " for $name" if $name;

    if(%links) {
        $output .= "\n\n";
        $output .= $self->render_refs(%links);
    }

    $output .= "\n\n";

}

sub render_refs($self,%links) {
    my $output = '';

    for my $ref ( sort keys %links ) {
        $output .= "    [$ref]: $links{$ref}\n"
    }

    return $output . "\n";
}

sub as_markdown($self) {
    my $changelog = $self->changelog;

    my $output = $self->render_header;

    my $n = 0;
    $output .= join "\n", map { $self->render_release($_, $n++) } $changelog->{releases}->@*;

    return $output;
}

sub render_release($self, $release, $n=0) {

    # it's a string? Okay then!
    return $release unless ref $release;


    my $version = $release->{version} || ( $n ? '???' : 'NEXT' );
    my $date = $release->{date};

    my $output = '';

    $output .= "## $version";
    $output .= " ($date)" if $date;

    return $output;
}

sub run($self) {
    no warnings 'utf8';
    print $self->as_markdown;
}

subcommand 'schema' => 'App::Changelord::Command::Schema';
subcommand 'validate' => 'App::Changelord::Command::Validate';

'end of App::Changeman';