<?php
namespace JVBase\meta;

if (!defined('ABSPATH')) {
	exit;
}

class Group
{
	protected Meta $meta;
	protected string $name;
	protected array $data;
	protected array $config;

	public function __construct(Meta $meta, string $name)
	{
		$this->meta = $meta;
		$this->name = $name;
		$this->config = $meta->config($name) ?? [];

		$data = $meta->get($name);
		$this->data = is_array($data) ? $data : [];
	}

	public function get(string $path): mixed
	{
		$parts = explode('|', $path);
		return $this->getPath($this->data, $this->config['fields'] ?? [], $parts);
	}
	protected function getPath(array $data, array $fieldsConfig, array $parts): mixed
	{
		$key = array_shift($parts);
		$fieldConfig = $fieldsConfig[$key] ?? false;

		if (!$fieldConfig) {
			return '';
		}

		if (empty($parts)) {
			return $data[$key] ?? $fieldConfig['default'] ?? '';
		}

		$nested = is_array($data[$key] ?? null) ? $data[$key] : [];
		return $this->getPath($nested, $fieldConfig['fields'] ?? [], $parts);
	}

	public function set(string $path, mixed $value, bool $autosave = true): self
	{
		$parts = explode('|', $path);
		$this->setPath($this->data, $this->config['fields'] ?? [], $parts, $value);
		$this->sync($autosave);
		return $this;
	}

	protected function setPath(array &$data, array $fieldsConfig, array $parts, mixed $value): void
	{
		$key = array_shift($parts);
		$fieldConfig = $fieldsConfig[$key] ?? false;

		if (!$fieldConfig) {
			error_log('[Group]::set Could not find child field config: ' . $key);
			return;
		}

		if (empty($parts)) {
			$data[$key] = $value;
			return;
		}

		// Nested group - descend into it
		if (!isset($data[$key]) || !is_array($data[$key])) {
			$data[$key] = [];
		}
		$this->setPath($data[$key], $fieldConfig['fields'] ?? [], $parts, $value);
	}

	public function setAll(array $data): self
	{
		foreach ($data as $field => $value) {
			$fieldConfig = $this->config['fields'][$field] ?? false;
			if (!$fieldConfig) {
				continue;
			}
			$this->data[$field] = $value;
		}
		$this->sync(true);
		return $this;
	}

	public function all(): array
	{
		return $this->data;
	}

	public function has(string $field): bool
	{
		return isset($this->config['fields'][$field]);
	}

	protected function sync(bool $autosave = true): void
	{
		$this->meta->set($this->name, $this->data, $autosave);
	}
}