#!/usr/bin/perl
# $Id$

=head1 NAME

youri-upload - package upload agent

=head1 VERSION

Version 2.0

=head1 SYNOPSIS

youri-upload [options] <target> <files>

Options:

    --config <file>        use file <file> as config file
    --skip-check <check>   skip check <check>
    --skip-action <action> skip action <action>
    --define <key>=<value> pass additional values
    --list-targets         list available targets
    --list-checks <target> list configured checks for for <target>
    --list-actions <target> list configured actions for for <target>
    --verbose              verbose run
    --test                 test run
    --help                 print this help message

=head1 DESCRIPTION

B<youri-upload> allows to upload packages in a repository.

All packages given on command lines are passed to a list of check plugins,
depending on given upload target. If none of them fails, all packages are
passed to a list of action plugins, depending also on given upload target.

=head1 OPTIONS

=over

=item B<--config> I<file>

Use given file as configuration, instead of normal one.

=item B<--skip-check> I<id>

Skip check plugin with given identity.

=item B<--skip-action> I<id>

Skip action plugin with given identity.

=item B<--define> <key>=<value>

Define additional parameters, to be used by plugins.

=item B<--verbose>

Produce more verbose output (can be used more than once)

=item B<--test>

Don't perform any modification.

=item B<--list-targets>

List available targets

=item B<--list-checks> I<target>

List configured checks for given target 

=item B<--list-actions> I<target>

List configured actions for given target 

=item B<--help>

Print a brief help message and exits.

=back

=head1 CONFIGURATION

Configuration is read from the first file found among:

=over

=item * the one specified by B<--config> option on command-line

=item * $HOME/.youri/upload.conf

=item * @sysconfdir@/youri/upload.conf

=back

All additional configuration files specified by B<includes> directive are then
processed. Then command line options. Any directive overrides prior definition.

=over

=item B<includes> I<files>

Uses space-separated list I<files> as a list of additional configuration files.

=item B<repository> I<id>

Declares a repository object with identity I<id>.

=item B<targets> I<ids>

Declares a list of upload target objects with identity taken in space-separated list I<ids>.

=back

Each object declared in configuration must be fully defined later, using a
configuration section, starting with bracketed object identity, followed by at
least a class directive, then any number of additional object-specific
directives.

Example:

        objects = foo
        
        [foo]
        class = Foo::Bar
        key1  = value1
        key2  = value2

=head1 SEE ALSO

Youri::Config, for configuration file format.

Each used plugin man page, for available options.

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2002-2006, YOURI project

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

=cut

use strict;
use warnings;

use Youri::Config;
use Youri::Utils;
use Pod::Usage;

my $config = Youri::Config->new(
    command_spec => [
        'config=s',
        'skip-check=s@',
        'skip-action=s@',
        'list-targets!',
        'list-checks=s',
        'list-actions=s',
        'define=s%',
        'help|h!',
        'test|t!',
        'verbose|v!'
    ],
    file_spec => [
        'includes=s',
        'targets=s',
        'repository=s',
    ],
    directories => [ '@sysconfdir@', "$ENV{HOME}/.youri" ],
    file_name   => 'upload.conf',
    caller => $0,
);

# compute available targets first
my %targets = map { $_ => 1 } split(/\s+/, $config->get('targets'));

if ($config->get('list-targets')) {
    print join(' ', keys %targets) . "\n";
    exit 0;
} elsif ($config->get('list-checks')) {
    my %target = get_target_config($config->get('list-checks'));
    print join(' ', @{$target{checks}}) . "\n";
    exit 0;
} elsif ($config->get('list-actions')) {
    my %target = get_target_config($config->get('list-actions'));
    print join(' ', @{$target{actions}}) . "\n";
    exit 0;
}

pod2usage(-verbose => 0, -message => "No target specified, aborting\n")
    unless @ARGV > 0;
pod2usage(-verbose => 0, -message => "No packages specified, aborting\n")
    unless @ARGV > 1;

# convenient global flags
my $test    = $config->get('test');
my $verbose = $config->get('verbose');

# check target
my $target = shift @ARGV;
my %target = get_target_config($target);

# create repository
my $repository;
my $repository_id = $config->get('repository');
die "No repository declared" unless $repository_id;
print "Creating repository $repository_id\n" if $verbose;
eval {
    $repository = create_instance(
        'Youri::Repository',
        test    => $test,
	user     => $config->get('define')->{user},
        verbose => $verbose > 0 ? $verbose - 1 : 0,
        targets => [ keys %targets ],
        $config->get_section($repository_id)
    );
};
die "Failed to create repository $repository_id: $@\n" if $@;

# create packages
my @packages;
foreach my $file (@ARGV) {
    push(
        @packages,
        create_instance(
            'Youri::Package',
            class => $repository->get_package_class(),
            file => $file
        )
    );
}

# check all packages pass all tests
my %skip_checks = map { $_ => 1 } @{$config->get('skip-check')};
foreach my $id (@{$target{checks}}) {
    next if $skip_checks{$id};
    print "Creating check $id\n" if $verbose;
    my $check;
    eval {
        $check = create_instance(
            'Youri::Upload::Check',
            id       => $id,
            test     => $test,
	    user     => $config->get('define')->{user},
            verbose  => $verbose > 0 ? $verbose - 1 : 0,
            $config->get_section($id)
        );
    };
    if ($@) {
        print STDERR "Failed to create check $id: $@\n";
    } else {
        foreach my $package (@packages) {
            print "running check $id on package $package\n" if $verbose;
            unless ($check->run($package, $repository, $target, $config->get('define'))) {
                print STDERR "Error: " . $check->get_error() . ", aborting\n";
                exit(1);
            }
        }
    }
}

# proceed further
my %skip_actions = map { $_ => 1 } @{$config->get('skip-action')};
foreach my $id (@{$target{actions}}) {
    next if $skip_actions{$id};
    print "Creating action $id\n" if $verbose;
    my $action;
    eval {
        $action = create_instance(
            'Youri::Upload::Action',
            id       => $id,
            test     => $test,
            verbose  => $verbose > 0 ? $verbose - 1 : 0,
            $config->get_section($id)
        );
    };
    if ($@) {
        print STDERR "Failed to create action $id: $@\n";
    } else {
        foreach my $package (@packages) {
            print "running action $id on package $package\n" if $verbose;
            eval {
                $action->run($package, $repository, $target, $config->get('define'));
                };
            if ($@) {
                print STDERR "Failed to run action $id on package $package: $@\n";
            }
        }
    }
}

sub get_target_config {
    my ($id) = @_;
    die "Unavailable target $target" unless $targets{$id};

    my %target = $config->get_section($id);
    die "Undefined target $id" unless %target;
    return %target;
}