package Code::TidyAll;

use strict;
use warnings;

use Code::TidyAll::Cache;
use Code::TidyAll::CacheModel;
use Code::TidyAll::Config::INI::Reader;
use Code::TidyAll::Plugin;
use Code::TidyAll::Result;
use Code::TidyAll::Zglob qw(zglob);
use Data::Dumper;
use Date::Format;
use Digest::SHA qw(sha1_hex);
use File::Find qw(find);
use File::pushd qw( pushd );
use List::SomeUtils qw(uniq);
use Module::Runtime qw( use_module );
use Path::Tiny qw(path);
use Scalar::Util qw(blessed);
use Specio 0.40;
use Specio::Declare;
use Specio::Library::Builtins;
use Specio::Library::Numeric;
use Specio::Library::Path::Tiny 0.04;
use Specio::Library::String;
use Time::Duration::Parse qw(parse_duration);
use Try::Tiny;

use Moo 2.000000;

our $VERSION = '0.78';

sub default_conf_names { ( 'tidyall.ini', '.tidyallrc' ) }

# External
has backup_ttl => (
    is      => 'ro',
    isa     => t('NonEmptyStr'),
    default => '1 hour',
);

has cache => (
    is  => 'lazy',
    isa => object_can_type( methods => [qw( get set )] ),
);

has cache_model_class => (
    is      => 'ro',
    isa     => t('ClassName'),
    default => 'Code::TidyAll::CacheModel',
);

has check_only => (
    is  => 'ro',
    isa => t('Bool'),
);

has data_dir => (
    is     => 'lazy',
    isa    => t('Path'),
    coerce => t('Path')->coercion_sub,
);

has iterations => (
    is      => 'ro',
    isa     => t('PositiveInt'),
    default => 1,
);

has jobs => (
    is      => 'ro',
    isa     => t('Int'),
    default => 1,
);

has list_only => (
    is  => 'ro',
    isa => t('Bool'),
);

has mode => (
    is      => 'ro',
    isa     => t('NonEmptyStr'),
    default => 'cli',
);

has msg_outputter => (
    is      => 'ro',
    isa     => t('CodeRef'),
    builder => '_build_msg_outputter',
);

has no_backups => (
    is  => 'ro',
    isa => t('Bool'),
);

has no_cache => (
    is  => 'ro',
    isa => t('Bool'),
);

has output_suffix => (
    is      => 'ro',
    isa     => t('Str'),
    default => q{},
);

has plugins => (
    is       => 'ro',
    isa      => t('HashRef'),
    required => 1,
);

has selected_plugins => (
    is      => 'ro',
    isa     => t( 'ArrayRef', of => t('NonEmptyStr') ),
    lazy    => 1,
    default => sub { [] },
);

has quiet => (
    is  => 'ro',
    isa => t('Bool'),
);
has recursive => (
    is  => 'ro',
    isa => t('Bool'),
);

has refresh_cache => (
    is  => 'ro',
    isa => t('Bool'),
);

has root_dir => (
    is       => 'ro',
    isa      => t('RealDir'),
    coerce   => t('RealDir')->coercion_sub,
    required => 1
);

has verbose => (
    is      => 'ro',
    isa     => t('Bool'),
    default => 0,
);

has inc => (
    is      => 'ro',
    isa     => t( 'ArrayRef', of => t('NonEmptyStr') ),
    default => sub { [] },
);

has _backup_dir => (
    is       => 'ro',
    isa      => t('Path'),
    init_arg => undef,
    lazy     => 1,
    builder  => '_build_backup_dir',
);

has _backup_ttl_secs => (
    is       => 'ro',
    isa      => t('Int'),
    init_arg => undef,
    lazy     => 1,
    builder  => '_build_backup_ttl_secs',
);

has _base_sig => (
    is       => 'ro',
    isa      => t('NonEmptyStr'),
    init_arg => undef,
    lazy     => 1,
    builder  => '_build_base_sig',
);

has _plugin_objects => (
    is       => 'ro',
    isa      => t( 'ArrayRef', of => object_isa_type('Code::TidyAll::Plugin') ),
    init_arg => undef,
    lazy     => 1,
    builder  => '_build_plugin_objects',
);

has _plugins_to_run => (
    is       => 'ro',
    isa      => t( 'HashRef', of => t('HashRef') ),
    init_arg => undef,
    lazy     => 1,
    builder  => '_build_plugins_to_run',
);

has _plugins_for_path => (
    is       => 'ro',
    isa      => t( 'HashRef', of => t('HashRef') ),
    init_arg => undef,
    lazy     => 1,
    default  => sub { {} },
);

with qw( Code::TidyAll::Role::HasIgnore Code::TidyAll::Role::Tempdir );

sub _build_backup_dir {
    my $self = shift;
    return $self->data_dir->child('backups');
}

sub _build_backup_ttl_secs {
    my $self = shift;
    return parse_duration( $self->backup_ttl );
}

sub _build_base_sig {
    my $self           = shift;
    my $active_plugins = join( q{|}, map { $_->name } @{ $self->_plugin_objects } );
    return $self->_sig( [ $Code::TidyAll::VERSION || 0, $active_plugins ] );
}

sub _sig {
    my ( $self, $data ) = @_;
    return sha1_hex( join( ',', @$data ) );
}

sub _build_cache {
    my $self = shift;
    return Code::TidyAll::Cache->new( cache_dir => $self->data_dir->child('cache') );
}

sub _build_data_dir {
    my $self = shift;
    return $self->root_dir->child('/.tidyall.d');
}

sub _build_plugins_to_run {
    my $self = shift;

    my $all_plugins = $self->plugins;
    my %selected    = map { $_ => 1 } @{ $self->selected_plugins };
    my %plugins;

    if (%selected) {
        my @unknown = sort grep { !$all_plugins->{$_} } keys %selected;
        die "Asked for unknown plugins: [@unknown]" if @unknown;
        %plugins = map { $_ => $all_plugins->{$_} } keys %selected;
    }
    elsif ( my $mode = $self->mode ) {
        %plugins = map { $_ => $all_plugins->{$_} }
            grep { $self->_plugin_conf_matches_mode( $all_plugins->{$_}, $mode ) }
            keys %{$all_plugins};
    }

    return \%plugins;
}

sub _plugin_conf_matches_mode {
    my ( $self, $conf, $mode ) = @_;

    if ( my $only_modes = $conf->{only_modes} ) {
        return 0 if ( q{ } . $only_modes . q{ } ) !~ / $mode /;
    }
    if ( my $except_modes = $conf->{except_modes} ) {
        return 0 if ( q{ } . $except_modes . q{ } ) =~ / $mode /;
    }
    return 1;
}

sub _build_plugin_objects {
    my $self = shift;

    # Sort tidiers by weight (by default validators have a weight of 60 and non-
    # validators a weight of 50 meaning non-validators normally go first), then
    # alphabetical
    # TODO: These should probably sort in a consistent way independent of locale
    return [
        sort    { ( $a->weight <=> $b->weight ) || ( $a->name cmp $b->name ) }
            map { $self->_load_plugin( $_, $self->_plugins_to_run->{$_} ) }
            keys %{ $self->_plugins_to_run }
    ];
}

sub _load_plugin {
    my ( $self, $plugin_name, $plugin_conf ) = @_;

    # Extract first name in case there is a description
    #
    my ($plugin_fname) = ( $plugin_name =~ /^(\S+)/ );

    my $plugin_class = (
        $plugin_fname =~ /^\+/
        ? substr( $plugin_fname, 1 )
        : "Code::TidyAll::Plugin::$plugin_fname"
    );
    try {
        use_module($plugin_class) || die 'not found';
    }
    catch {
        die qq{could not load plugin class '$plugin_class': $_};
    };

    return $plugin_class->new(
        name    => $plugin_name,
        tidyall => $self,
        %$plugin_conf
    );
}

sub BUILD {
    my ( $self, $params ) = @_;

    # Strict constructor
    #
    if ( my @bad_params = grep { !$self->can($_) } keys(%$params) ) {
        die sprintf(
            'unknown constructor param%s %s for %s',
            @bad_params > 1 ? 's' : q{},
            join( ', ', sort map {qq['$_']} @bad_params ),
            ref($self)
        );
    }

    unless ( $self->no_backups ) {
        $self->_backup_dir->mkpath( { mode => 0775 } );
        $self->_purge_backups_periodically();
    }

    @INC = ( @{ $self->inc }, @INC );
}

sub _purge_backups_periodically {
    my ($self)             = @_;
    my $cache              = $self->cache;
    my $last_purge_backups = $cache->get('last_purge_backups') || 0;
    if ( time > $last_purge_backups + $self->_backup_ttl_secs ) {
        $self->_purge_backups();
        $cache->set( 'last_purge_backups', time() );
    }
}

sub _purge_backups {
    my ($self) = @_;
    $self->msg('purging old backups') if $self->verbose;
    find(
        {
            follow => 0,
            wanted => sub {
                unlink $_ if -f && /\.bak$/ && time > ( stat($_) )[9] + $self->_backup_ttl_secs;
            },
            no_chdir => 1
        },
        $self->_backup_dir,
    );
}

sub new_from_conf_file {
    my ( $class, $conf_file, %params ) = @_;

    $conf_file = path($conf_file);

    die qq{no such file '$conf_file'} unless $conf_file->is_file;
    my $conf_params = $class->_read_conf_file($conf_file);
    my $main_params = delete( $conf_params->{'_'} ) || {};

    %params = (
        plugins  => $conf_params,
        root_dir => path($conf_file)->realpath->parent,
        %{$main_params},
        %params
    );

    # Initialize with alternate class if given
    #
    if ( my $tidyall_class = delete( $params{tidyall_class} ) ) {
        local @INC = ( @{ $conf_params->{inc} }, @INC ) if $conf_params->{inc};
        use_module($tidyall_class) or die qq{cannot load '$tidyall_class'};
        $class = $tidyall_class;
    }

    if ( $params{verbose} ) {
        my $msg_outputter = $params{msg_outputter} || $class->_build_msg_outputter();
        $msg_outputter->(
            'constructing %s with these params: %s', $class,
            _dump_params( \%params )
        );
    }

    return $class->new(%params);
}

sub _read_conf_file {
    my ( $class, $conf_file ) = @_;
    my $conf_string = $conf_file->slurp_utf8;
    my $root_dir    = $conf_file->parent;
    $conf_string =~ s/\$ROOT/$root_dir/g;
    my $conf_hash = Code::TidyAll::Config::INI::Reader->read_string($conf_string);
    die qq{'$conf_file' did not evaluate to a hash}
        unless ( ref($conf_hash) eq 'HASH' );
    return $conf_hash;
}

sub _dump_params {
    my $p = shift;

    return Data::Dumper->new( [ _recurse_dump($p) ] )->Indent(0)->Sortkeys(1)->Quotekeys(0)
        ->Terse(1)->Dump;
}

# This is all a ridiculous workaround around the fact that there is no good
# way to tell Data::Dumper how to serialize a Path::Tiny object.
sub _recurse_dump {
    my ($p) = @_;

    return $p unless ref $p;

    if ( ref $p eq 'HASH' ) {
        my %dump;
        for my $k ( keys %{$p} ) {
            my $v = $p->{$k};
            if ( blessed $v ) {
                if ( $v->isa('Path::Tiny') ) {
                    $dump{$k} = $v . q{};
                }
                else {
                    die 'Cannot dump ' . ref($v) . ' object';
                }
            }
            elsif ( ref $v =~ /^(?:HASH|ARRAY)$/ ) {
                $dump{$k} = _recurse_dump($v);
            }
            else {
                $dump{$k} = $v;
            }
        }
        return \%dump;
    }
    elsif ( ref $p eq 'ARRAY' ) {
        my @dump;
        for my $v ( @{$p} ) {
            if ( blessed $v ) {
                if ( $v->isa('Path::Tiny') ) {
                    push @dump, $v . q{};
                }
                else {
                    die 'Cannot dump ' . ref($v) . ' object';
                }
            }
            elsif ( ref $v =~ /^(?:HASH|ARRAY)$/ ) {
                push @dump, _recurse_dump($v);
            }
            else {
                push @dump, $v;
            }
        }
        return \@dump;
    }

    die "_recurse_dump was called with a value that was not a scalar, hashref, or an arrayref: $p";
}

sub process_all {
    my $self = shift;

    return $self->process_paths( $self->find_matched_files );
}

sub process_paths {
    my ( $self, @paths ) = @_;

    @paths = map {
        try { $_->realpath }
            || $_->absolute
    } map { path($_) } @paths;

    my $dir = pushd( $self->root_dir );
    if ( $self->jobs > 1 && @paths > 1 ) {
        return $self->_process_parallel(@paths);
    }
    else {
        return map { $self->process_path($_) } @paths;
    }
}

sub _process_parallel {
    my ( $self, @paths ) = @_;

    unless ( eval { require Parallel::ForkManager; 1; } ) {
        die 'Running Code::TidyAll with multiple jobs requires Parallel::ForkManager';
    }

    my @results;
    my %path_to_pid;

    my $pm = Parallel::ForkManager->new( $self->jobs );
    $pm->set_waitpid_blocking_sleep(0.01);
    $pm->run_on_finish(
        sub {
            my ( $pid, $code, $result ) = @_[ 0, 1, 5 ];

            if ($code) {
                warn "Error running tidyall on $path_to_pid{$pid}. Got exit status of $code.";
            }
            else {
                push @results, $result;
            }
        }
    );

    for my $path (@paths) {
        if ( my $pid = $pm->start ) {
            $path_to_pid{$path} = $pid;
            next;
        }

        $pm->finish( 0, $self->process_path($path) );
    }

    $pm->wait_all_children;

    return @results;
}

sub process_path {
    my ( $self, $path ) = @_;

    if ( $path->is_dir ) {
        if ( $self->recursive ) {
            return $self->process_paths( $path->children );
        }
        else {
            return ( $self->_error_result( "$path: is a directory (try -r/--recursive)", $path ) );
        }
    }
    elsif ( $path->is_file ) {
        return ( $self->process_file($path) );
    }
    else {
        return ( $self->_error_result( "$path: not a file or directory", $path ) );
    }
}

sub process_file {
    my ( $self, $full_path ) = @_;

    $full_path = path($full_path);
    die "$full_path is not a file" unless $full_path->is_file;

    my $path = $self->_small_path($full_path);

    if ( $self->list_only ) {
        if ( my @plugins = $self->plugins_for_path($path) ) {
            $self->msg( '%s (%s)', $path, join( ', ', map { $_->name } @plugins ) );
        }
        return Code::TidyAll::Result->new( path => $path, state => 'checked' );
    }

    my $cache_model = $self->_cache_model_for( $path, $full_path );
    if ( $self->refresh_cache ) {
        $cache_model->remove;
    }
    elsif ( $cache_model->is_cached ) {
        $self->msg( '[cached] %s', $path ) if $self->verbose;
        return Code::TidyAll::Result->new( path => $path, state => 'cached' );
    }

    my $contents = $cache_model->file_contents || $full_path->slurp_raw;
    my $result   = $self->process_source( $contents, $path );

    if ( $result->state eq 'tidied' ) {

        # backup original contents
        $self->_backup_file( $path, $contents );

        # write new contents out to disk
        $contents = $result->new_contents;

        # We don't use ->spew because that creates a new file and renames it,
        # losing the existing mode setting in the process.
        path( $full_path . $self->output_suffix )->append_raw( { truncate => 1 }, $contents );

        # change the in memory contents of the cache (but don't update yet)
        $cache_model->file_contents($contents) unless $self->output_suffix;
    }

    $cache_model->update if $result->ok;
    return $result;
}

sub _small_path {
    my ( $self, $path ) = @_;
    die sprintf( q{'%s' is not underneath root dir '%s'!}, $path, $self->root_dir )
        unless index( $path, $self->root_dir ) == 0;
    return path( substr( $path . q{}, length( $self->root_dir ) + 1 ) );
}

sub plugins_for_path {
    my ( $self, $path ) = @_;

    $self->_plugins_for_path->{$path}
        ||= [ grep { $_->matches_path($path) } @{ $self->_plugin_objects } ];
    return @{ $self->_plugins_for_path->{$path} };
}

sub _cache_model_for {
    my ( $self, $path, $full_path ) = @_;
    return $self->cache_model_class->new(
        path      => $path,
        full_path => $full_path,
        ( $self->no_cache ? () : ( cache_engine => $self->cache ) ),
        base_sig => $self->_base_sig,
    );
}

sub _backup_file {
    my ( $self, $path, $contents ) = @_;
    unless ( $self->no_backups ) {
        my $backup_file = $self->_backup_dir->child( $self->_backup_filename($path) );
        $backup_file->parent->mkpath( { mode => 0775 } );
        $backup_file->spew_raw($contents);
    }
}

sub _backup_filename {
    my ( $self, $path ) = @_;

    return join( q{}, $path, '-', time2str( '%Y%m%d-%H%M%S', time ), '.bak' );
}

sub process_source {
    my ( $self, $contents, $path ) = @_;

    $path = path($path);

    die 'contents and path required' unless defined($contents) && defined($path);
    my @plugins = $self->plugins_for_path($path);

    if ( !@plugins ) {
        $self->msg(
            '[no plugins apply%s] %s',
            $self->mode ? q{ for mode '} . $self->mode . q{'} : q{}, $path
        ) if $self->verbose;
        return Code::TidyAll::Result->new( path => $path, state => 'no_match' );
    }

    if ( $self->verbose ) {
        my @names = join ', ', map { $_->name } @plugins;
        $self->msg("[applying the following plugins: @names]");
    }

    my $new_contents = my $orig_contents = $contents;
    my $plugin;
    my $error;
    my @diffs;
    try {
        foreach my $method (qw(preprocess_source process_source_or_file postprocess_source)) {
            foreach $plugin (@plugins) {
                my $diff;
                ( $new_contents, $diff )
                    = $plugin->$method( $new_contents, $path, $self->check_only );
                if ($diff) {
                    push @diffs, [ $plugin->name, $diff ];
                }
            }
        }
    }
    catch {
        chomp;
        $error = $_;
        $error = sprintf( q{*** '%s': %s}, $plugin->name, $_ ) if $plugin;
    };

    my $was_tidied = !$error && ( $new_contents ne $orig_contents );
    if ( $was_tidied && $self->check_only ) {
        $error = '*** needs tidying';
        foreach my $diff (@diffs) {
            $error .= "\n\n";
            $error .= "$diff->[0] made the following change:\n$diff->[1]";
        }
        $error .= "\n\n" if @diffs;
        undef $was_tidied;
    }

    if ( !$self->quiet || $error ) {
        my $status = $was_tidied ? '[tidied]  ' : '[checked] ';
        my $plugin_names
            = $self->verbose ? sprintf( ' (%s)', join( ', ', map { $_->name } @plugins ) ) : q{};
        $self->msg( '%s%s%s', $status, $path, $plugin_names );
    }

    if ($error) {
        return $self->_error_result( $error, $path, $orig_contents, $new_contents );
    }
    elsif ($was_tidied) {
        return Code::TidyAll::Result->new(
            path          => $path,
            state         => 'tidied',
            orig_contents => $orig_contents,
            new_contents  => $new_contents
        );
    }
    else {
        return Code::TidyAll::Result->new( path => $path, state => 'checked' );
    }
}

sub _error_result {
    my ( $self, $msg, $path, $orig_contents, $new_contents ) = @_;
    $self->msg( '%s', $msg );
    return Code::TidyAll::Result->new(
        path  => $path,
        state => 'error',
        error => $msg,
        (
              ( defined $orig_contents && length $orig_contents )
            ? ( orig_contents => $orig_contents )
            : ()
        ),
        (
              ( defined $new_contents && length $new_contents )
            ? ( new_contents => $new_contents )
            : ()
        ),
    );
}

sub find_conf_file {
    my ( $class, $conf_names, $start_dir ) = @_;

    $start_dir = path($start_dir);
    my $path1     = $start_dir->absolute;
    my $path2     = $start_dir->realpath;
    my $conf_file = $class->_find_conf_file_upward( $conf_names, $path1 )
        || $class->_find_conf_file_upward( $conf_names, $path2 );
    unless ( defined $conf_file ) {
        die sprintf(
            'could not find %s upwards from %s',
            join( ' or ', @$conf_names ),
            ( $path1 eq $path2 ) ? qq{'$path1'} : qq{'$path1' or '$path2'}
        );
    }
    return $conf_file;
}

sub _find_conf_file_upward {
    my ( $class, $conf_names, $search_dir ) = @_;

    my $cnt = 0;
    while (1) {
        foreach my $conf_name (@$conf_names) {
            my $try_path = $search_dir->child($conf_name);
            return $try_path if $try_path->is_file;
        }

        my $parent = $search_dir->parent;
        last if $parent eq $search_dir;
        $search_dir = $parent;

        die 'inf loop!' if ++$cnt > 100;
    }
}

sub find_matched_files {
    my ($self) = @_;

    my $plugins_for_path = $self->_plugins_for_path;
    my $root_length      = length( $self->root_dir );

    my @all;
    for my $plugin ( @{ $self->_plugin_objects } ) {
        my @matched = $self->_matched_by_plugin($plugin);
        push @all, @matched;

        # When we end up in process_source we'll need to know which plugins
        # match a given file. This could be (re-)calculated When we call
        # ->plugins_for_path($file) there but since we already know the path
        # to plugin mapping, we might as well store it here.
        for my $file (@matched) {
            my $path = substr( $file, $root_length + 1 );
            $plugins_for_path->{$path} ||= [];
            push @{ $plugins_for_path->{$path} }, $plugin;
        }
    }

    return map { path($_) } uniq(@all);
}

sub _matched_by_plugin {
    my $self   = shift;
    my $plugin = shift;

    my %is_ignored = map { $_ => 1 }
        $self->_zglob( [ @{ $self->ignores || [] }, @{ $plugin->ignores || [] } ] );
    my @matched
        = grep { !$is_ignored{$_} } grep { -f && -s && !-l } $self->_zglob( $plugin->selects );

    my $shebang = $plugin->shebang
        or return @matched;

    my $re = join '|', map {quotemeta} @{$shebang};
    $re = qr/^#!.*\b(?:$re)\b/;
    return grep {
        my $fh;
        open $fh, '<', $_ or die $!;
        scalar <$fh> =~ /$re/;
    } @matched;
}

sub _zglob {
    my ( $self, $globs ) = @_;

    local $Code::TidyAll::Zglob::NOCASE = 0;
    my @files;
    foreach my $glob (@$globs) {
        try {
            push @files, zglob( join( "/", $self->root_dir, $glob ) );
        }
        catch {
            die qq{error parsing '$glob': $_};
        }
    }
    return uniq(@files);
}

sub msg {
    my ( $self, $format, @params ) = @_;
    $self->msg_outputter()->( $format, @params );
}

sub _build_msg_outputter {
    return sub {
        my $format = shift;
        printf "$format\n", @_;
    };
}

1;

# ABSTRACT: Engine for tidyall, your all-in-one code tidier and validator

__END__

=pod

=encoding UTF-8

=head1 NAME

Code::TidyAll - Engine for tidyall, your all-in-one code tidier and validator

=head1 VERSION

version 0.78

=head1 SYNOPSIS

    use Code::TidyAll;

    my $ct = Code::TidyAll->new_from_conf_file(
        '/path/to/conf/file',
        ...
    );

    # or

    my $ct = Code::TidyAll->new(
        root_dir => '/path/to/root',
        plugins  => {
            perltidy => {
                select => 'lib/**/*.(pl|pm)',
                argv => '-noll -it=2',
            },
            ...
        }
    );

    # then...

    $ct->process_paths($file1, $file2);

=head1 DESCRIPTION

This is the engine used by L<tidyall> - read that first to get an overview.

You can call this API from your own program instead of executing C<tidyall>.

=head1 METHODS

This class offers the following methods:

=head2 Code::TidyAll->new(%params)

The regular constructor. Must pass at least I<plugins> and I<root_dir>.

=head2 $tidyall->new_with_conf_file( $conf_file, %params )

Takes a conf file path, followed optionally by a set of key/value parameters.
Reads parameters out of the conf file and combines them with the passed
parameters (the latter take precedence), and calls the regular constructor.

If the conf file or params defines I<tidyall_class>, then that class is
constructed instead of C<Code::TidyAll>.

=head3 Constructor parameters

=over 4

=item * plugins

Specify a hash of plugins, each of which is itself a hash of options. This is
equivalent to what would be parsed out of the sections in the configuration
file.

=item * selected_plugins

An arrayref of plugins to be used. This overrides the C<mode> parameter.

This is really only useful if you're getting configuration from a config file
and want to narrow the set of plugins to be run.

Note that plugins will still only run on files which match their C<select> and
C<ignore> configuration.

=item * cache_model_class

The cache model class. Defaults to C<Code::TidyAll::CacheModel>

=item * cache

The cache instance (e.g. an instance of C<Code::TidyAll::Cache> or a C<CHI>
instance.) An instance of C<Code::TidyAll::Cache> is automatically instantiated
by default.

=item * backup_ttl

=item * check_only

If this is true, then we simply check that files pass validation steps and that
tidying them does not change the file. Any changes from tidying are not
actually written back to the file.

=item * no_cleanup

A boolean indicating if we should skip cleaning temporary files or not.
Defaults to false.

=item * inc

An arrayref of directories to prepend to C<@INC>. This can be set via the
command-line as C<-I>, but you can also set it in a config file.

This affects both loading and running plugins.

=item * data_dir

=item * iterations

=item * mode

=item * no_backups

=item * no_cache

=item * output_suffix

=item * quiet

=item * root_dir

=item * ignore

=item * verbose

These options are the same as the equivalent C<tidyall> command-line options,
replacing dashes with underscore (e.g. the C<backup-ttl> option becomes
C<backup_ttl> here).

=item * msg_outputter

This is a subroutine reference that is called whenever a message needs to be
printed in some way. The sub receives a C<sprintf()> format string followed by
one or more parameters. The default sub used simply calls C<printf "$format\n",
@_> but L<Test::Code::TidyAll> overrides this to use the C<<
Test::Builder->diag >> method.

=back

=head2 $tidyall->process_paths( $path, ... )

This method iterates through a list of paths, processing all the files it
finds. It will descend into subdirectories if C<recursive> flag is true.
Returns a list of L<Code::TidyAll::Result> objects, one for each file.

=head2 $tidyall->process_file( $file )

Process the one I<file>, meaning:

=over 4

=item *

Check the cache and return immediately if file has not changed.

=item *

Apply appropriate matching plugins.

=item *

Print success or failure result to STDOUT, depending on quiet/verbose settings.

=item *

Write to the cache if caching is enabled.

=item *

Return a L<Code::TidyAll::Result> object.

=back

=head2 $tidyall->process_source( $source, $path )

Like C<process_file>, but process the I<source> string instead of a file, and
does not read from or write to the cache. You must still pass the relative
I<path> from the root as the second argument, so that we know which plugins to
apply. Returns a L<Code::TidyAll::Result> object.

=head2 $tidyall->plugins_for_path($path)

Given a relative I<path> from the root, returns a list of
L<Code::TidyAll::Plugin> objects that apply to it, or an empty list if no
plugins apply.

=head2 $tidyall->find_matched_files

Returns a list of sorted files that match at least one plugin in configuration.

=head2 Code::TidyAll->find_conf_file( $conf_names, $start_dir )

Start in the I<start_dir> and work upwards, looking for a file matching one of
the I<conf_names>. Returns the pathname if found or throw an error if not
found.

=head1 SUPPORT

Bugs may be submitted at
L<https://github.com/houseabsolute/perl-code-tidyall/issues>.

I am also usually active on IRC as 'autarch' on C<irc://irc.perl.org>.

=head1 SOURCE

The source code repository for Code-TidyAll can be found at
L<https://github.com/houseabsolute/perl-code-tidyall>.

=head1 AUTHORS

=over 4

=item *

Jonathan Swartz <swartz@pobox.com>

=item *

Dave Rolsky <autarch@urth.org>

=back

=head1 CONTRIBUTORS

=for stopwords Adam Herzog Andy Jack Finn Smith George Hartzell Graham Knop Gregory Oschwald Joe Crotty Kenneth Ölwing Mark Fowler Grimes Martin Gruner Mohammad S Anwar Nick Tonkin Olaf Alders Pedro Melo Ricardo Signes Sergey Romanov Shlomi Fish timgimyee

=over 4

=item *

Adam Herzog <adam@adamherzog.com>

=item *

Andy Jack <andyjack@cpan.org>

=item *

Finn Smith <finn@timeghost.net>

=item *

George Hartzell <georgewh@gene.com>

=item *

Graham Knop <haarg@haarg.org>

=item *

Gregory Oschwald <goschwald@maxmind.com>

=item *

Joe Crotty <joe.crotty@returnpath.net>

=item *

Kenneth Ölwing <kenneth.olwing@skatteverket.se>

=item *

Mark Fowler <mark@twoshortplanks.com>

=item *

Mark Grimes <mgrimes@cpan.org>

=item *

Martin Gruner <martin.gruner@otrs.com>

=item *

Mohammad S Anwar <mohammad.anwar@yahoo.com>

=item *

Nick Tonkin <ntonkin@bur-ntonkin-m1.corp.endurance.com>

=item *

Olaf Alders <olaf@wundersolutions.com>

=item *

Pedro Melo <melo@simplicidade.org>

=item *

Ricardo Signes <rjbs@cpan.org>

=item *

Sergey Romanov <sromanov-dev@yandex.ru>

=item *

Shlomi Fish <shlomif@shlomifish.org>

=item *

timgimyee <tim.gim.yee@gmail.com>

=back

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2011 - 2020 by Jonathan Swartz.

This is free software; you can redistribute it and/or modify it under the same
terms as the Perl 5 programming language system itself.

The full text of the license can be found in the F<LICENSE> file included with
this distribution.

=cut