#!/usr/bin/perl
# ------------------------------------------------------------------------
# -- Copyright 2023 Nikolai Rodionov (allanger)
# ------------------------------------------------------------------------
# -- Permission is hereby granted, without written agreement and without
# -- license or royalty fees, to use, copy, modify, and distribute this
# -- software and its documentation for any purpose, provided that the
# -- above copyright notice and the following two paragraphs appear in
# -- all copies of this software.
# -- 
# -- IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
# -- DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
# -- ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
# -- IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
# -- DAMAGE.
# -- 
# -- THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
# -- BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
# -- FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
# -- ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
# -- PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
# ---------------------------------------------------------------------------
use strict; 
use warnings; 
# --------------------------------------
# -- Gitea variables
# --------------------------------------
my $gitea_url=$ENV{'GITEA_URL'} || 'https://git.badhouseplants.net/api/v1';
my $gitea_org=$ENV{'DRONE_REPO_NAMESPACE'} || 'badhouseplants';
my $gitea_package=$ENV{'DRONE_REPO_NAME'} || 'badhouseplants-net';
my $gitea_api="$gitea_url/packages/$gitea_org/container/$gitea_package";
my $gitea_list_api="$gitea_url/packages/$gitea_org?page=1&type=container&q=$gitea_package";
my $gitea_token=$ENV{'GITEA_TOKEN'};
my $gitea_user=$ENV{'GITEA_USER'} || $ENV{'DRONE_COMMIT_AUTHOR'};
# ---------------------------------------
# -- Get tags from Gitea
# ---------------------------------------
my $builds = "curl -X 'GET' \"$gitea_list_api\" -H 'accept: application/json' -H \"Authorization: token $gitea_token\" | jq -r '.[].version'";
my @builds_out = `$builds`;
chomp @builds_out;
# ---------------------------------------
# -- Get a list of all commits + 'latest'
# ---------------------------------------
my $commits = "";
if (defined $ENV{CLEANUP_ARGO}) {
    $commits = "argocd app list -o yaml -l application=badhouseplants | yq  '.[].metadata.labels.commit_sha'";
} else { 
    $commits = "git fetch && git log --format=format:%H --all";
}
my @commits_out = `$commits`;
chomp @commits_out;
push @commits_out, 'latest';
# --------------------------------------
# -- Rclone variables
# -------------------------------------
my $dirs = "rclone lsf badhouseplants-minio:/badhouseplants-net";
my @dirs_out = `$dirs`;
chomp @dirs_out;
# ---------------------------------------
# -- Compare builds to commits 
# -- And remove obsolete imgages from
# --  registry
# ---------------------------------------
print "Cleaning up the container registry\n";
foreach my $line (@builds_out)
{
  print "Checking if $line is in @commits_out\n\n";
  if ( ! grep( /^$line$/, @commits_out ) ) {
    my $cmd = "curl -X 'DELETE' -s \"$gitea_api/$line\"  -H 'accept: application/json' -H \"Authorization: token $gitea_token\" || true";
    print "Removing ${line}\n\n";
    my $output = `$cmd`;
    print "$output \n";
  } 
}
if (defined $ENV{CLEANUP_MINIO}) {
    print "Cleaning up Minio\n";
    foreach my $line (@dirs_out)
    {
      print "Checking if $line is in @commits_out\n\n";
      chop($line);
      if ( ! grep( /^$line$/, @commits_out ) ) {
        my $cmd = "rclone purge badhouseplants-minio:/badhouseplants-net/$line";
        print "Removing ${line}\n\n";
        my $output = `$cmd`;
        print "$output \n";
      }
    }
}