100 lines
2.7 KiB
PHP
100 lines
2.7 KiB
PHP
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<?php
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namespace Knuckles\Scribe\Tools;
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use Illuminate\Support\Str;
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use Symfony\Component\VarExporter\VarExporter;
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class ConfigDiffer
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{
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public function __construct(
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protected array $original,
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protected array $changed,
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protected array $ignorePaths = [],
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protected array $asList = [],
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) {}
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public function getDiff()
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{
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return $this->recursiveItemDiff($this->original, $this->changed);
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}
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protected function recursiveItemDiff($old, $new, $prefix = '')
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{
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$diff = [];
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foreach ($new as $key => $value) {
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$fullKey = $prefix.$key;
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if (Str::is($this->ignorePaths, $fullKey)) {
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continue;
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}
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$oldValue = data_get($old, $key);
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if (is_array($value)) {
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if (Str::is($this->asList, $fullKey)) {
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$listDiff = $this->diffList($oldValue, $value);
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if (! empty($listDiff)) {
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$diff[$fullKey] = $listDiff;
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}
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} else {
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$diff = array_merge(
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$diff,
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$this->recursiveItemDiff($oldValue, $value, "{$fullKey}.")
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);
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}
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} else {
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if ($oldValue !== $value) {
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$printedValue = json_encode($value, JSON_UNESCAPED_SLASHES);
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$diff[$prefix.$key] = $printedValue;
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}
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}
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}
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return $diff;
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}
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protected function diffList(mixed $oldValue, array $value)
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{
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if (! is_array($oldValue)) {
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return 'changed to a list';
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}
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$added = array_map(fn ($v) => "{$v}", $this->subtractArraysFlat($value, $oldValue));
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$removed = array_map(fn ($v) => "{$v}", $this->subtractArraysFlat($oldValue, $value));
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$diff = [];
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if (! empty($added)) {
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$diff[] = 'added '.implode(', ', $added);
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}
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if (! empty($removed)) {
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$diff[] = 'removed '.implode(', ', $removed);
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}
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return empty($diff) ? '' : implode(': ', $diff);
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}
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/**
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* Basically array_diff, but handling items which may also be arrays.
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*/
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protected function subtractArraysFlat(array $a, array $b)
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{
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$mapped_a = array_map(function ($item) {
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if (is_array($item)) {
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return VarExporter::export($item);
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}
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return $item;
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}, $a);
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$mapped_b = array_map(function ($item) {
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if (is_array($item)) {
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return VarExporter::export($item);
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}
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return $item;
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}, $b);
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return array_diff($mapped_a, $mapped_b);
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}
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}
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