#!/usr/bin/perl
#############################################################################
##
## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
## Contact: Nokia Corporation (qt-info@nokia.com)
##
## This file is part of the utilities of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:LGPL$
## No Commercial Usage
## This file contains pre-release code and may not be distributed.
## You may use this file in accordance with the terms and conditions
## contained in the Technology Preview License Agreement accompanying
## this package.
##
## GNU Lesser General Public License Usage
## Alternatively, this file may be used under the terms of the GNU Lesser
## General Public License version 2.1 as published by the Free Software
## Foundation and appearing in the file LICENSE.LGPL included in the
## packaging of this file.  Please review the following information to
## ensure the GNU Lesser General Public License version 2.1 requirements
## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
##
## In addition, as a special exception, Nokia gives you certain additional
## rights.  These rights are described in the Nokia Qt LGPL Exception
## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
##
## If you have questions regarding the use of this file, please contact
## Nokia at qt-info@nokia.com.
##
##
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## $QT_END_LICENSE$
##
#############################################################################

use strict;
use warnings;

my $force = 0;
my $quiet = 0;
my $nokia_developer = 0;
my $brisbane_mirror = 0;
my $no_webkit = 0;
my $no_update = 0;
my $ignore_submodules = 0;

my $protocol = "";
my %protocols = (
    'internal' => 'git://scm.dev.nokia.troll.no',
    'ssh' => 'git@scm.dev.nokia.troll.no',
    'http' => 'http://git.gitorious.org'
);

sub system_v
{
    if (!$quiet) {
        print "+ ";
        print @_;
        print "\n";
    }
    return system(@_);
}

sub printUsage
{
    print("$0 <options>\n");
    print("  -f               Force initialization.\n");
    print("  -q               Quiet operation. Will exit cleanly if repository is already\n");
    print("                   initialized.\n\n");

    print("Module options\n");
    print("  -no-webkit       Skip webkit and webkit examples submodules.\n");
    print("  -no-update       Skip the 'git submodule update' command.\n");
    print("  -ignore-submodules\n");
    print("                   Ignores submodules when doing operations on qt5 repo, such\n");
    print("                   as 'pull', 'fetch', 'diff' etc. Use\n");
    print("                   --ignore-submodules=none to override, when needed\n\n");

    print("Repository options:\n");
    print("  -nokia-developer Switch to internal Nokia URLs.\n");
    print("  -brisbane        Switch to internal Nokia URLs, and setup the brisbane\n");
    print("                   mirrors.\n");
    print("  -ssh             Use SSH protocol, for restrictive firewalls. Note that this\n");
    print("                   requires a user account with an uploaded SSH key on all\n");
    print("                   servers used. (Implies -nokia-developer!)\n");
    print("  -http            Use HTTP protocol, for restrictive firewalls. Note that this\n");
    print("                   only works with the external Gitorious server.\n");
}

while (@ARGV) {
    my $arg = $ARGV[0];
    if ($arg eq "-f") {
        $force = 1;
    } elsif ($arg eq "-q") {
        $quiet = 1;
    } elsif ($arg eq "-brisbane" || $arg eq "-brisbane-nokia-developer") {
        $nokia_developer = 1;
        $brisbane_mirror = 1;
    } elsif ($arg eq "-nokia-developer") {
        $nokia_developer = 1;
        $protocol = "internal";
    } elsif ($arg eq "-ssh" || $arg eq "-ssh-protocol") {
        $protocol = "ssh";
    } elsif ($arg eq "-http") {
        if ($nokia_developer || $brisbane_mirror) {
            print("*** Ignoring use of HTTP protocol, as it's only usable with external server\n");
        } else {
            $protocol = "http";
        }
    } elsif ($arg eq "/?" || $arg eq "-?" || $arg eq "/h" || $arg eq "-h" || $arg eq "--help") {
        printUsage();
        exit 0;
    } elsif ($arg eq "-no-webkit") {
        $no_webkit = 1;
    } elsif ($arg eq "-no-update") {
        $no_update = 1;
    } elsif ($arg eq "-ignore-submodules") {
        $ignore_submodules = 1;
    } else {
        print("*** Unknown option: $arg\n");
        printUsage();
        exit(1);
    }
    shift;
}

if (`git config --get submodule.qtbase.url`) {
    if ($force) {
        my @configresult = `git config -l`;
        foreach (@configresult) {
            if (/(submodule\.[^.=]+)\.url=.*/) {
                system_v("git config --remove-section $1");
            }
        }
    } else {
        exit 0 if ($quiet);
        print("Will not reinitialize already initialized repository (use -f to force)!\n");
        exit 1;
    }
}

my $init_args = "";
$init_args = "-q" if ($quiet);
system_v("git submodule init $init_args");
if ($no_webkit){
    system_v("git config --remove submodule.qtwebkit");
    system_v("git config --remove submodule.qtwebkit-examples-and-demos");
}

my @configresult = `git config -l`;
my $proto = $protocols{$protocol};
foreach (@configresult) {
    if (/(submodule\.[^.=]+\.url)=(.*)/) {
        my $key = $1;
        my $value = $2;
        if ($protocol) {
            # WebKit is special, and has only external link.
            if ($key ne "submodule.qtwebkit.url") {
                # qt-labs projects are still hosted under qt internally.
                $value =~ s,^git://gitorious\.org/qt-labs/,$proto/qt/, if ($protocol ne "http") ;
                $value =~ s,^git://gitorious\.org/,$proto/,;
            }
        }
        system_v("git config \"$key\" \"$value\"");
        if ($ignore_submodules) {
            $key =~ s,\.url,.ignore,;
            system_v("git config \"$key\" \"all\"");
        }
    }
}

if ($nokia_developer) {
    if ($brisbane_mirror) {
        my $mirror_url = "git://bq-git.apac.nokia.com/qtsoftware/qt/";
        my %exceptions = ("qtwebkit", "git://bq-git.apac.nokia.com/qtsoftware/research/gitorious-org-webkit-qtwebkit-mirror.git");
        my @configresult2 = `git config -l`;
        foreach (@configresult2) {
            if(/submodule\.([^.=]+)\.url=(.*)/){
                my $repo = $1;
                my $url = $2;
                my $this_mirror_url;
                no warnings 'uninitialized';
                if($exceptions{$repo} ne undef){
                    $this_mirror_url = $exceptions{$repo};
                } else {
                    $this_mirror_url = "$mirror_url$repo.git";
                }
                print("Using mirror $this_mirror_url to clone $url\n");
                unless ($no_update) {
                    system_v("git clone $this_mirror_url $repo");
                    chdir($repo) or die "cd failed";
                    system_v("git config remote.origin.url $url");
                    system_v("git remote add mirror $this_mirror_url");
                    chdir("..") or die "cd fail";
                }
            }
        }
    }
}

unless ($no_update){
    system_v("git submodule update");
}