[Release] KaririCode Transformer v1.0.0 🚀

src/Attribute/Transform.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Attribute;
+
+use KaririCode\Contract\Processor\Attribute\BaseProcessorAttribute;
+
+#[\Attribute(\Attribute::TARGET_PROPERTY)]
+final class Transform extends BaseProcessorAttribute
+{
+}

src/Contract/TransformationResult.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Contract;
+
+interface TransformationResult
+{
+    public function isValid(): bool;
+
+    public function getErrors(): array;
+
+    public function getTransformedData(): array;
+
+    public function toArray(): array;
+}

src/Exception/TransformerException.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Exception;
+
+use KaririCode\Exception\AbstractException;
+
+final class TransformerException extends AbstractException
+{
+    private const CODE_INVALID_INPUT = 5001;
+    private const CODE_INVALID_FORMAT = 5002;
+    private const CODE_INVALID_TYPE = 5003;
+
+    public static function invalidInput(string $expectedType, string $actualType): self
+    {
+        $message = sprintf(
+            'Invalid input type. Expected %s, got %s.',
+            $expectedType,
+            $actualType
+        );
+
+        return self::createException(
+            self::CODE_INVALID_INPUT,
+            'INVALID_INPUT_TYPE',
+            $message
+        );
+    }
+
+    public static function invalidFormat(string $format, string $value): self
+    {
+        $message = sprintf(
+            'Invalid format. Expected format %s, got %s.',
+            $format,
+            $value
+        );
+
+        return self::createException(
+            self::CODE_INVALID_FORMAT,
+            'INVALID_FORMAT',
+            $message
+        );
+    }
+
+    public static function invalidType(string $expectedType): self
+    {
+        $message = sprintf(
+            'Invalid type. Expected %s.',
+            $expectedType
+        );
+
+        return self::createException(
+            self::CODE_INVALID_TYPE,
+            'INVALID_TYPE',
+            $message
+        );
+    }
+}

src/Processor/AbstractTransformerProcessor.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Processor;
+
+use KaririCode\Contract\Processor\Processor;
+use KaririCode\Contract\Processor\ValidatableProcessor;
+use KaririCode\Transformer\Exception\TransformerException;
+
+abstract class AbstractTransformerProcessor implements Processor, ValidatableProcessor
+{
+    protected bool $isValid = true;
+    protected string $errorKey = '';
+
+    public function reset(): void
+    {
+        $this->isValid = true;
+        $this->errorKey = '';
+    }
+
+    protected function setInvalid(string $errorKey): void
+    {
+        $this->isValid = false;
+        $this->errorKey = $errorKey;
+    }
+
+    public function isValid(): bool
+    {
+        return $this->isValid;
+    }
+
+    public function getErrorKey(): string
+    {
+        return $this->errorKey;
+    }
+
+    protected function guardAgainstInvalidType(mixed $input, string $type): void
+    {
+        $actualType = get_debug_type($input);
+        if ($actualType !== $type) {
+            throw TransformerException::invalidType($type);
+        }
+    }
+
+    abstract public function process(mixed $input): mixed;
+}

src/Processor/Array/ArrayFlattenTransformer.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Processor\Array;
+
+use KaririCode\Contract\Processor\ConfigurableProcessor;
+use KaririCode\Transformer\Processor\AbstractTransformerProcessor;
+use KaririCode\Transformer\Trait\ArrayTransformerTrait;
+
+class ArrayFlattenTransformer extends AbstractTransformerProcessor implements ConfigurableProcessor
+{
+    use ArrayTransformerTrait;
+
+    private int $depth = -1;
+    private string $separator = '.';
+
+    public function configure(array $options): void
+    {
+        $this->depth = $options['depth'] ?? $this->depth;
+        $this->separator = $options['separator'] ?? $this->separator;
+    }
+
+    public function process(mixed $input): array
+    {
+        if (!is_array($input)) {
+            $this->setInvalid('notArray');
+
+            return [];
+        }
+
+        return $this->flattenArray($input, '', $this->depth);
+    }
+
+    private function flattenArray(array $array, string $prefix = '', int $depth = -1): array
+    {
+        $result = [];
+
+        foreach ($array as $key => $value) {
+            $newKey = $prefix ? $prefix . $this->separator . $key : $key;
+
+            if (is_array($value) && ($depth > 0 || -1 === $depth)) {
+                $result = array_merge(
+                    $result,
+                    $this->flattenArray($value, $newKey, $depth > 0 ? $depth - 1 : -1)
+                );
+            } else {
+                $result[$newKey] = $value;
+            }
+        }
+
+        return $result;
+    }
+}

src/Processor/Array/ArrayGroupTransformer.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Processor\Array;
+
+use KaririCode\Contract\Processor\ConfigurableProcessor;
+use KaririCode\Transformer\Processor\AbstractTransformerProcessor;
+use KaririCode\Transformer\Trait\ArrayTransformerTrait;
+
+class ArrayGroupTransformer extends AbstractTransformerProcessor implements ConfigurableProcessor
+{
+    use ArrayTransformerTrait;
+
+    private string $groupBy = '';
+    private bool $preserveKeys = false;
+
+    public function configure(array $options): void
+    {
+        if (!isset($options['groupBy'])) {
+            throw new \InvalidArgumentException('The groupBy option is required');
+        }
+
+        $this->groupBy = $options['groupBy'];
+        $this->preserveKeys = $options['preserveKeys'] ?? $this->preserveKeys;
+    }
+
+    public function process(mixed $input): array
+    {
+        if (!is_array($input)) {
+            $this->setInvalid('notArray');
+
+            return [];
+        }
+
+        return $this->groupArray($input);
+    }
+
+    private function groupArray(array $array): array
+    {
+        $result = [];
+
+        foreach ($array as $key => $item) {
+            if (!is_array($item)) {
+                continue;
+            }
+
+            $groupValue = $item[$this->groupBy] ?? null;
+            if (null === $groupValue) {
+                continue;
+            }
+
+            if ($this->preserveKeys) {
+                $result[$groupValue][$key] = $item;
+            } else {
+                $result[$groupValue][] = $item;
+            }
+        }
+
+        return $result;
+    }
+}

src/Processor/Array/ArrayKeyTransformer.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Processor\Array;
+
+use KaririCode\Contract\Processor\ConfigurableProcessor;
+use KaririCode\Transformer\Processor\AbstractTransformerProcessor;
+use KaririCode\Transformer\Trait\ArrayTransformerTrait;
+
+class ArrayKeyTransformer extends AbstractTransformerProcessor implements ConfigurableProcessor
+{
+    use ArrayTransformerTrait;
+
+    private const CASE_SNAKE = 'snake';
+    private const CASE_CAMEL = 'camel';
+    private const CASE_PASCAL = 'pascal';
+    private const CASE_KEBAB = 'kebab';
+
+    private string $case = self::CASE_SNAKE;
+    private bool $recursive = true;
+
+    public function configure(array $options): void
+    {
+        if (isset($options['case']) && in_array($options['case'], $this->getAllowedCases(), true)) {
+            $this->case = $options['case'];
+        }
+
+        $this->recursive = $options['recursive'] ?? $this->recursive;
+    }
+
+    public function process(mixed $input): array
+    {
+        if (!is_array($input)) {
+            $this->setInvalid('notArray');
+
+            return [];
+        }
+
+        return $this->transformArrayKeys($input);
+    }
+
+    private function transformArrayKeys(array $array): array
+    {
+        $result = [];
+
+        foreach ($array as $key => $value) {
+            $transformedKey = $this->transformKey((string) $key);
+
+            if (is_array($value) && $this->recursive) {
+                $result[$transformedKey] = $this->transformArrayKeys($value);
+            } else {
+                $result[$transformedKey] = $value;
+            }
+        }
+
+        return $result;
+    }
+
+    private function transformKey(string $key): string
+    {
+        return match ($this->case) {
+            self::CASE_SNAKE => $this->toSnakeCase($key),
+            self::CASE_CAMEL => $this->toCamelCase($key),
+            self::CASE_PASCAL => $this->toPascalCase($key),
+            self::CASE_KEBAB => $this->toKebabCase($key),
+            default => $key,
+        };
+    }
+
+    private function getAllowedCases(): array
+    {
+        return [
+            self::CASE_SNAKE,
+            self::CASE_CAMEL,
+            self::CASE_PASCAL,
+            self::CASE_KEBAB,
+        ];
+    }
+}

src/Processor/Array/ArrayMapTransformer.php

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+<?php
+
+declare(strict_types=1);
+
+namespace KaririCode\Transformer\Processor\Array;
+
+use KaririCode\Contract\Processor\ConfigurableProcessor;
+use KaririCode\Transformer\Processor\AbstractTransformerProcessor;
+use KaririCode\Transformer\Trait\ArrayTransformerTrait;
+
+class ArrayMapTransformer extends AbstractTransformerProcessor implements ConfigurableProcessor
+{
+    use ArrayTransformerTrait;
+
+    private array $mapping = [];
+    private bool $removeUnmapped = false;
+    private bool $recursive = true;
+
+    public function configure(array $options): void
+    {
+        if (!isset($options['mapping']) || !is_array($options['mapping'])) {
+            throw new \InvalidArgumentException('The mapping option is required and must be an array');
+        }
+
+        $this->mapping = $options['mapping'];
+        $this->removeUnmapped = $options['removeUnmapped'] ?? $this->removeUnmapped;
+        $this->recursive = $options['recursive'] ?? $this->recursive;
+    }
+
+    public function process(mixed $input): array
+    {
+        if (!is_array($input)) {
+            $this->setInvalid('notArray');
+
+            return [];
+        }
+
+        return $this->mapArray($input);
+    }
+
+    private function mapArray(array $array): array
+    {
+        $result = [];
+
+        foreach ($array as $key => $value) {
+            if (is_array($value) && $this->recursive) {
+                $result[$key] = $this->mapArray($value);
+                continue;
+            }
+
+            $mappedKey = $this->mapping[$key] ?? $key;
+
+            if ($this->removeUnmapped && !isset($this->mapping[$key])) {
+                continue;
+            }
+
+            $result[$mappedKey] = $value;
+        }
+
+        return $result;
+    }
+}