<?php

// class Type_WpsProcess
// class Type_WpsProcessInput

class Type_WpsProcess {

	var $_data = [];

	// Type_WpsProcessOutput: [ 'MimeType' => text/xml, 'Encoding' => base64, 'Schema' => http://foo.bar/gml/3.1.0/polygon.xsd ]
	// supportedOutput: [ Type_WpsProcessOutput, ... ]
	// 	[ 'MimeType' => "text/xml; subtype=wfs-collection/1.0" ],
	// 	[ 'MimeType' => "text/xml; subtype=wfs-collection/1.1" ],
	// 	[ 'MimeType' => "application/json" ],
	// 	[ 'MimeType' => "application/wfs-collection-1.0" ],
	// 	[ 'MimeType' => "application/wfs-collection-1.1" ],
	// 	[ 'MimeType' => "application/zip" ],

	static function validate($conf) {
		if (empty($conf['identifier'])) throw new Exception("WpsProcess parse error - missing input identifier");
		if (empty($conf['title'])) throw new Exception("WpsProcess parse error - missing input title for '{$conf['identifier']}'");
	}
	static function build($conf) { // @return Type_WpsProcess or throw Exception
		self::validate($conf);
		$wpsProcess = new Type_WpsProcess();
		$wpsProcess->identifier = $conf['identifier'];
		$wpsProcess->title = $conf['title'];
		$wpsProcess->description = $conf['description'];
		$wpsProcess->processVersion = V::get('processVersion', '1.0.0', $conf);
		$wpsProcess->dataInputs = array_map(function ($input) {
			return ($input instanceof Type_WpsProcessInput) ? $input : Type_WpsProcessInput::build($input);
		}, $conf['dataInputs']);
		$wpsProcess->defaultOutput = $conf['defaultOutput'];
		$wpsProcess->supportedOutput = $conf['supportedOutput'];
		return $wpsProcess;
	}

	function __isset($name) {
		return (array_key_exists($name, $this->_data));
	}

	function __get($name) {
		if (array_key_exists($name, $this->_data)) {
			return $this->_data[$name];
		}
		return null;
	}

	function __set($name, $value) {
		$this->_data[$name] = $value;
	}

	function toArray() {
		return $this->_data;
	}

	function __toString() {
		return str_replace('"', '',
			str_replace([ '{', '}', '":', ',"' ], [ '{ ', ' }', ': ', ', ' ], json_encode($this->_data))
		);
	}

	function toWpsJson() {
		return [
			'processVersion' => V::get('processVersion', '1.0.0', $this->_data),
			'statusSupported' => false,
			'storeSupported' => false,
			'identifier' => $this->_data['identifier'],
			'title' => $this->_data['title'],
			'abstract' => V::get('description', '', $this->_data),
			'dataInputs' => array_map(function ($input) {
				return $input->toWpsJson();
			}, $this->_data['dataInputs']),
			'processOutputs' => [ // TODO: multiple outputs?
				[
					'identifier' => "result",
					'title' => "result",
					'defaultOutput' => $this->_data['defaultOutput'],
					'supportedOutput' => $this->_data['supportedOutput'],
				],
			]
		];
		// { // expected json structure:
		// 	"processVersion": "",
		// 	"statusSupported": false,
		// 	"storeSupported": false,
		// 	"identifier": "p5:selectFeature",
		// 	"title": "Select feature",
		// 	"abstract": "",
		// 	"dataInputs": [{
		// 		"maxOccurs": 1,
		// 		"minOccurs": 1,
		// 		"title": "Feature typeName",
		// 		"abstract": "Feature typeName eg. default_db/PROBLEMS",
		// 		"literalData": {
		// 			"anyValue": true
		// 		}
		// 	}, {
		// 		"maxOccurs": null,
		// 		"minOccurs": 1,
		// 		"title": "Feature primaryKey",
		// 		"abstract": "Feature primaryKey",
		// 		"literalData": {
		// 			"anyValue": true
		// 		}
		// 	}],
		// 	"processOutputs": [{
		// 		"identifier": "result",
		// 		"title": "result",
		// 		"complexOutput": {
		// 			"default": {
		// 				"formats": {
		// 					"text/xml; subtype=wfs-collection/1.0": true
		// 				}
		// 			},
		// 			"supported": {
		// 				"formats": {
		// 					"text/xml; subtype=wfs-collection/1.0": true,
		// 					"text/xml; subtype=wfs-collection/1.1": true,
		// 					"application/json": true
		// 				}
		// 			}
		// 		}
		// 	}]
		// }
	}

}


class Type_WpsProcessInput {

	var $_data = [];

	static function validate($conf) {
		if (empty($conf['identifier'])) throw new Exception("WpsProcessInput parse error - missing input identifier");
		if (empty($conf['title'])) throw new Exception("WpsProcessInput parse error - missing input title for '{$conf['identifier']}'");
	}
	static function build($conf) { // @return Type_WpsProcessInput or throw Exception
		self::validate($conf);
		$input = new Type_WpsProcessInput();
		$input->identifier = $conf['identifier'];
		$input->title = $conf['title'];
		$input->description = V::get('description', "", $conf);
		$input->maxOccurs = V::get('maxOccurs', 1, $conf, 'maxOccurs');
		$input->minOccurs = V::get('minOccurs', 1, $conf, 'minOccurs');
		$input->literalData = [ 'anyValue' => true ]; // default string input for all functions
		$input->_xsdType = $conf['type']; // for validation
		return $input;
	}

	function __isset($name) {
		return (array_key_exists($name, $this->_data));
	}

	function __get($name) {
		if (array_key_exists($name, $this->_data)) {
			return $this->_data[$name];
		}
		return null;
	}

	function __set($name, $value) {
		$this->_data[$name] = $value;
	}

	function toArray() {
		return $this->_data;
	}

	function __toString() {
		return str_replace('"', '',
			str_replace([ '{', '}', '":', ',"' ], [ '{ ', ' }', ': ', ', ' ], json_encode($this->_data))
		);
	}

	function toWpsJson() {
		return [
			'identifier' => $this->_data['identifier'],
			'title' => $this->_data['title'],
			'abstract' => $this->_data['description'],
			'literalData' => $this->_data['literalData'],
			'maxOccurs' => $this->_data['maxOccurs'],
			'minOccurs' => $this->_data['minOccurs'],
		];
	}

}