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<?php |
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/** |
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* @copyright CONTENT CONTROL GmbH, http://www.contentcontrol-berlin.de |
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*/ |
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namespace midcom\datamanager; |
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use midcom_error; |
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use midcom_helper_misc; |
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/** |
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* Experimental schemadb class |
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*/ |
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class schemadb |
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{ |
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private array $schemas = []; |
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public static function from_path(string $path) : self |
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{ |
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return new static(midcom_helper_misc::load_snippet($path)); |
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} |
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public function __construct(array $data = []) |
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{ |
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$this->check_inheritance($data); |
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foreach ($data as $name => $config) { |
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$this->add($name, new schema($config)); |
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} |
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} |
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private function check_inheritance(array &$data) |
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{ |
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foreach ($data as $schema_name => $schema) { |
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if (!isset($schema['extends'])) { |
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continue; |
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} |
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// Default extended schema is with the same name |
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$extended_schema_name = $schema_name; |
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$path = ''; |
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if (is_array($schema['extends'])) { |
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if (isset($schema['extends']['path'])) { |
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$path = $schema['extends']['path']; |
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} |
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// Override schema name |
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if (isset($schema['extends']['name'])) { |
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$extended_schema_name = $schema['extends']['name']; |
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} |
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} elseif (isset($data[$schema['extends']])) { |
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$schema['extends'] = [ |
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'name' => $schema['extends'], |
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]; |
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} else { |
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$path = $schema['extends']; |
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} |
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if ($path === '') { |
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// Infinite loop, set an UI message and stop executing |
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if ( !isset($schema['extends']['name']) |
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|| $schema['extends']['name'] === $schema_name) { |
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throw new midcom_error('schema ' . $schema_name . ' extends itself'); |
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} |
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$extended_schema_name = $schema['extends']['name']; |
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$extended_schemadb = [$extended_schema_name => $data[$extended_schema_name]]; |
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} else { |
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$extended_schemadb = midcom_helper_misc::load_snippet($path); |
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if (!isset($extended_schemadb[$extended_schema_name])) { |
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throw new midcom_error('extended schema ' . $path . ':' . $schema_name . ' was not found'); |
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} |
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} |
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// Override the extended schema with fields from the new schema |
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foreach ($schema as $key => $value) { |
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if ($key === 'extends') { |
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continue; |
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} |
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// This is probably either fields or operations |
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if (is_array($value)) { |
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$extended_schemadb[$extended_schema_name][$key] ??= []; |
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foreach ($value as $name => $field) { |
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if (!$field) { |
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unset($extended_schemadb[$extended_schema_name][$key][$name]); |
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continue; |
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} |
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$extended_schemadb[$extended_schema_name][$key][$name] = $field; |
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} |
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} else { |
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$extended_schemadb[$extended_schema_name][$key] = $value; |
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} |
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} |
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// Replace the new schema with extended schema |
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$data[$schema_name] = $extended_schemadb[$extended_schema_name]; |
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} |
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} |
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public function add(string $name, schema $schema) |
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{ |
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$this->schemas[$name] = $schema; |
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$schema->set_name($name); |
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} |
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/** |
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* @return schema[] |
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*/ |
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public function all() : array |
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{ |
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return $this->schemas; |
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} |
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public function get_first() : schema |
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{ |
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if (empty($this->schemas)) { |
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throw new midcom_error('Schema DB is empty'); |
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} |
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return reset($this->schemas); |
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} |
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public function has(string $name) : bool |
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{ |
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return array_key_exists($name, $this->schemas); |
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} |
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public function get(string $name) : schema |
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{ |
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if (!array_key_exists($name, $this->schemas)) { |
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throw new midcom_error('Schema ' . $name . ' not found in schemadb'); |
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} |
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return $this->schemas[$name]; |
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} |
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} |
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