public static function build()
{
/**
* The original trilogy consists of three movies.
*
* This implements the following type system shorthand:
* enum Episode { NEWHOPE, EMPIRE, JEDI }
*/
$episodeEnum = new EnumType(['name' => 'Episode', 'description' => 'One of the films in the Star Wars Trilogy', 'values' => ['NEWHOPE' => ['value' => 4, 'description' => 'Released in 1977.'], 'EMPIRE' => ['value' => 5, 'description' => 'Released in 1980.'], 'JEDI' => ['value' => 6, 'description' => 'Released in 1983.']]]);
$humanType = null;
$droidType = null;
/**
* Characters in the Star Wars trilogy are either humans or droids.
*
* This implements the following type system shorthand:
* interface Character {
* id: String!
* name: String
* friends: [Character]
* appearsIn: [Episode]
* }
*/
$characterInterface = new InterfaceType(['name' => 'Character', 'description' => 'A character in the Star Wars Trilogy', 'fields' => function () use(&$characterInterface, $episodeEnum) {
return ['id' => ['type' => Type::nonNull(Type::string()), 'description' => 'The id of the character.'], 'name' => ['type' => Type::string(), 'description' => 'The name of the character.'], 'friends' => ['type' => Type::listOf($characterInterface), 'description' => 'The friends of the character, or an empty list if they have none.'], 'appearsIn' => ['type' => Type::listOf($episodeEnum), 'description' => 'Which movies they appear in.'], 'secretBackstory' => ['type' => Type::string(), 'description' => 'All secrets about their past.']];
}, 'resolveType' => function ($obj) use(&$humanType, &$droidType) {
return StarWarsData::getHuman($obj['id']) ? $humanType : $droidType;
}]);
/**
* We define our human type, which implements the character interface.
*
* This implements the following type system shorthand:
* type Human implements Character {
* id: String!
* name: String
* friends: [Character]
* appearsIn: [Episode]
* secretBackstory: String
* }
*/
$humanType = new ObjectType(['name' => 'Human', 'description' => 'A humanoid creature in the Star Wars universe.', 'fields' => ['id' => ['type' => new NonNull(Type::string()), 'description' => 'The id of the human.'], 'name' => ['type' => Type::string(), 'description' => 'The name of the human.'], 'friends' => ['type' => Type::listOf($characterInterface), 'description' => 'The friends of the human, or an empty list if they have none.', 'resolve' => function ($human, $args, $context, ResolveInfo $info) {
$fieldSelection = $info->getFieldSelection();
$fieldSelection['id'] = true;
$friends = array_map(function ($friend) use($fieldSelection) {
return array_intersect_key($friend, $fieldSelection);
}, StarWarsData::getFriends($human));
return $friends;
}], 'appearsIn' => ['type' => Type::listOf($episodeEnum), 'description' => 'Which movies they appear in.'], 'homePlanet' => ['type' => Type::string(), 'description' => 'The home planet of the human, or null if unknown.'], 'secretBackstory' => ['type' => Type::string(), 'description' => 'Where are they from and how they came to be who they are.', 'resolve' => function () {
// This is to demonstrate error reporting
throw new \Exception('secretBackstory is secret.');
}]], 'interfaces' => [$characterInterface]]);
/**
* The other type of character in Star Wars is a droid.
*
* This implements the following type system shorthand:
* type Droid implements Character {
* id: String!
* name: String
* friends: [Character]
* appearsIn: [Episode]
* secretBackstory: String
* primaryFunction: String
* }
*/
$droidType = new ObjectType(['name' => 'Droid', 'description' => 'A mechanical creature in the Star Wars universe.', 'fields' => ['id' => ['type' => Type::nonNull(Type::string()), 'description' => 'The id of the droid.'], 'name' => ['type' => Type::string(), 'description' => 'The name of the droid.'], 'friends' => ['type' => Type::listOf($characterInterface), 'description' => 'The friends of the droid, or an empty list if they have none.', 'resolve' => function ($droid) {
return StarWarsData::getFriends($droid);
}], 'appearsIn' => ['type' => Type::listOf($episodeEnum), 'description' => 'Which movies they appear in.'], 'secretBackstory' => ['type' => Type::string(), 'description' => 'Construction date and the name of the designer.', 'resolve' => function () {
// This is to demonstrate error reporting
throw new \Exception('secretBackstory is secret.');
}], 'primaryFunction' => ['type' => Type::string(), 'description' => 'The primary function of the droid.']], 'interfaces' => [$characterInterface]]);
/**
* This is the type that will be the root of our query, and the
* entry point into our schema. It gives us the ability to fetch
* objects by their IDs, as well as to fetch the undisputed hero
* of the Star Wars trilogy, R2-D2, directly.
*
* This implements the following type system shorthand:
* type Query {
* hero(episode: Episode): Character
* human(id: String!): Human
* droid(id: String!): Droid
* }
*
*/
$queryType = new ObjectType(['name' => 'Query', 'fields' => ['hero' => ['type' => $characterInterface, 'args' => ['episode' => ['description' => 'If omitted, returns the hero of the whole saga. If provided, returns the hero of that particular episode.', 'type' => $episodeEnum]], 'resolve' => function ($root, $args) {
return StarWarsData::getHero(isset($args['episode']) ? $args['episode'] : null);
}], 'human' => ['type' => $humanType, 'args' => ['id' => ['name' => 'id', 'description' => 'id of the human', 'type' => Type::nonNull(Type::string())]], 'resolve' => function ($root, $args) {
$humans = StarWarsData::humans();
return isset($humans[$args['id']]) ? $humans[$args['id']] : null;
}], 'droid' => ['type' => $droidType, 'args' => ['id' => ['name' => 'id', 'description' => 'id of the droid', 'type' => Type::nonNull(Type::string())]], 'resolve' => function ($root, $args) {
$droids = StarWarsData::droids();
return isset($droids[$args['id']]) ? $droids[$args['id']] : null;
}]]]);
return new Schema(['query' => $queryType]);
}
