#!/usr/bin/env perl

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# Revision History:
# 2026-10-12 Copilot v1.0.0 r? tests for dotted-key path handling in compare_reports

use strict;
use warnings;
use Test::More;
use File::Temp qw(tempdir);
use YAML::Tiny;

#######################################################
#
# runCompare( $oldPath, $newPath )
#
# Runs compare_reports and returns output plus exit code.
#
# Parameters:
#   $oldPath - path to old YAML report
#   $newPath - path to new YAML report
#
# Returns:
#   list (output, exit code)
#
# Side Effects:
#   executes external perl script
#
#######################################################
sub runCompare {
   my ($oldPath, $newPath) = @_;
   my $output = qx($^X tools/compare_reports "$oldPath" "$newPath" 2>&1);
   my $exitCode = $? >> 8;
   return ($output, $exitCode);
}

my $tempDir = tempdir(CLEANUP => 1);

my $oldAllowed = "$tempDir/old-allowed.yaml";
my $newAllowed = "$tempDir/new-allowed.yaml";
YAML::Tiny->new({
   'diskinfo' => {
      'eth0.100' => {
         'size' => '100',
      },
   },
})->write($oldAllowed);
YAML::Tiny->new({
   'diskinfo' => {
      'eth0.100' => {
         'size' => '200',
      },
   },
})->write($newAllowed);

my ($allowedOut, $allowedExit) = runCompare($oldAllowed, $newAllowed);
is($allowedExit, 0, 'dotted key under allowed path does not fail compare_reports');
like($allowedOut, qr/\(none\)/, 'allowed dotted-key diff appears as no disallowed value differences');

my $oldCollision = "$tempDir/old-collision.yaml";
my $newCollision = "$tempDir/new-collision.yaml";
YAML::Tiny->new({
   'a' => {
      'b.c' => 'first',
   },
   'a.b' => {
      'c' => 'second',
   },
})->write($oldCollision);
YAML::Tiny->new({
   'a' => {
      'b.c' => 'first',
   },
})->write($newCollision);

my ($collisionOut, $collisionExit) = runCompare($oldCollision, $newCollision);
is($collisionExit, 1, 'segment-safe flattening detects missing colliding dotted path');
like($collisionOut, qr/Missing old key paths in NEW:/, 'missing section is reported for colliding dotted keys');

done_testing();