<?php
/**
 * APIs: REST (/wp-json/wp/v2/animales) y GraphQL (/graphql). Documentación Swagger protegida.
 */

defined( 'ABSPATH' ) || exit;

/** Ficha de un animal lista para las APIs: valores internos + textos legibles en su idioma. */
function ga_animal_api_data( $post_id ) {
	$lang = function_exists( 'pll_get_post_language' ) ? ( pll_get_post_language( $post_id ) ?: 'es' ) : 'es';
	$data = array(
		'estado'      => ga_status( $post_id ),
		'destacado'   => (bool) ga_get( $post_id, 'destacado' ),
		'sexo'        => ga_get( $post_id, 'sexo' ),
		'nacimiento'  => ga_get( $post_id, 'nacimiento' ),
		'edad'        => '' === ga_get( $post_id, 'edad' ) ? null : (float) ga_get( $post_id, 'edad' ),
		'edad_unidad' => ga_get( $post_id, 'edad_unidad' ),
		'tamano'      => ga_get( $post_id, 'tamano' ),
		'llegada'     => ga_get( $post_id, 'llegada' ),
		'galeria'     => array_map( fn( $id ) => wp_get_attachment_image_url( $id, 'large' ), ga_gallery_ids( $post_id ) ),
		'video'       => ga_get( $post_id, 'video' ),
		'caracter'    => ga_get( $post_id, 'caracter' ),
		'necesidades' => ga_get( $post_id, 'necesidades' ),
		'convivencia' => ga_get( $post_id, 'convivencia' ),
		'hogar'       => ga_get( $post_id, 'hogar' ),
		'idioma'      => $lang,
	);
	$data['textos'] = ga_with_lang( $lang, fn() => array(
		'estado' => ga_label( $post_id, 'estado' ),
		'sexo'   => ga_label( $post_id, 'sexo' ),
		'edad'   => ga_age( $post_id ),
		'tamano' => ga_label( $post_id, 'tamano' ),
	) );
	return $data;
}

add_action( 'rest_api_init', function () {
	register_rest_field( 'animal', 'ficha', array(
		'get_callback' => fn( $post ) => ga_animal_api_data( $post['id'] ),
		'schema'       => array(
			'description' => 'Ficha del animal (valores internos y textos legibles en su idioma).',
			'type'        => 'object',
			'context'     => array( 'view', 'edit' ),
			'readonly'    => true,
			'properties'  => array(
				'estado'      => array( 'type' => 'string', 'enum' => array( 'disponible', 'proceso', 'adoptado' ) ),
				'destacado'   => array( 'type' => 'boolean' ),
				'sexo'        => array( 'type' => 'string' ),
				'nacimiento'  => array( 'type' => 'string' ),
				'edad'        => array( 'type' => array( 'number', 'null' ) ),
				'edad_unidad' => array( 'type' => 'string' ),
				'tamano'      => array( 'type' => 'string' ),
				'llegada'     => array( 'type' => 'string' ),
				'galeria'     => array( 'type' => 'array', 'items' => array( 'type' => 'string', 'format' => 'uri' ) ),
				'video'       => array( 'type' => 'string' ),
				'caracter'    => array( 'type' => 'string' ),
				'necesidades' => array( 'type' => 'string' ),
				'convivencia' => array( 'type' => 'string' ),
				'hogar'       => array( 'type' => 'string' ),
				'idioma'      => array( 'type' => 'string' ),
				'textos'      => array( 'type' => 'object' ),
			),
		),
	) );
} );

add_action( 'graphql_register_types', function () {
	register_graphql_object_type( 'AnimalFichaTextos', array(
		'description' => 'Textos legibles de la ficha, en el idioma del animal.',
		'fields'      => array(
			'estado' => array( 'type' => 'String' ),
			'sexo'   => array( 'type' => 'String' ),
			'edad'   => array( 'type' => 'String' ),
			'tamano' => array( 'type' => 'String' ),
		),
	) );
	register_graphql_object_type( 'AnimalFicha', array(
		'description' => 'Ficha del animal en adopción.',
		'fields'      => array(
			'estado'      => array( 'type' => 'String', 'description' => 'disponible, proceso o adoptado' ),
			'destacado'   => array( 'type' => 'Boolean' ),
			'sexo'        => array( 'type' => 'String' ),
			'nacimiento'  => array( 'type' => 'String' ),
			'edad'        => array( 'type' => 'Float' ),
			'edadUnidad'  => array( 'type' => 'String' ),
			'tamano'      => array( 'type' => 'String' ),
			'llegada'     => array( 'type' => 'String' ),
			'galeria'     => array( 'type' => array( 'list_of' => 'String' ) ),
			'video'       => array( 'type' => 'String' ),
			'caracter'    => array( 'type' => 'String' ),
			'necesidades' => array( 'type' => 'String' ),
			'convivencia' => array( 'type' => 'String' ),
			'hogar'       => array( 'type' => 'String' ),
			'idioma'      => array( 'type' => 'String' ),
			'textos'      => array( 'type' => 'AnimalFichaTextos' ),
		),
	) );
	register_graphql_field( 'Animal', 'ficha', array(
		'type'    => 'AnimalFicha',
		'resolve' => function ( $post ) {
			$data               = ga_animal_api_data( $post->databaseId );
			$data['edadUnidad'] = $data['edad_unidad'];
			return $data;
		},
	) );
} );

/*
 * Documentación Swagger (/rest-api/docs/).
 *
 * El plugin WP API SwaggerUI genera bien el esquema OpenAPI (/rest-api/schema), pero su paquete
 * en wordpress.org no incluye los archivos de la interfaz (assets/), así que su página sale en blanco.
 * Servimos nuestra propia página con Swagger UI oficial (versión fijada y con integridad SRI).
 * Solo para usuarios conectados, salvo API_DOCS_PUBLIC=true.
 */
define( 'GA_SWAGGER_UI_VERSION', '5.33.0' );

add_action( 'template_redirect', function () {
	if ( 'docs' !== get_query_var( 'swagger_api' ) ) {
		return;
	}
	if ( 'true' !== getenv( 'API_DOCS_PUBLIC' ) && ! is_user_logged_in() ) {
		auth_redirect();
	}

	$cdn    = 'https://cdn.jsdelivr.net/npm/swagger-ui-dist@' . GA_SWAGGER_UI_VERSION;
	$config = array(
		'url'   => home_url( '/rest-api/schema' ),
		'nonce' => is_user_logged_in() ? wp_create_nonce( 'wp_rest' ) : '',
	);
	nocache_headers();
	header( 'Content-Type: text/html; charset=utf-8' );
	?>
<!doctype html>
<html lang="es">
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="robots" content="noindex">
	<title><?php echo esc_html( get_bloginfo( 'name' ) ); ?> · API</title>
	<link rel="stylesheet" href="<?php echo esc_url( $cdn . '/swagger-ui.css' ); ?>" integrity="sha384-Ov4/wv3j2bmct8cDc5X4ngJZohVPzEmc6uDPH8WeljUxO5vtoykvMEfbu9Vh6RaW" crossorigin="anonymous">
	<style>body{margin:0;background:#fafafa}.ga-api-bar{padding:10px 20px;background:#401f0c;color:#fff;font:14px system-ui,sans-serif}.ga-api-bar a{color:#e6d9b7}</style>
</head>
<body>
	<div class="ga-api-bar">
		<?php echo esc_html( get_bloginfo( 'name' ) ); ?> · API REST ·
		<a href="<?php echo esc_url( home_url( '/rest-api/schema' ) ); ?>">Esquema OpenAPI</a> ·
		<a href="<?php echo esc_url( home_url( '/graphql' ) ); ?>">GraphQL</a> ·
		<a href="<?php echo esc_url( admin_url() ); ?>">Volver al panel</a>
	</div>
	<div id="swagger-ui"></div>
	<script src="<?php echo esc_url( $cdn . '/swagger-ui-bundle.js' ); ?>" integrity="sha384-YDALVcy8kj8yltLBVi1vBiBAUqdxvus673gM8XKwiy6aDUJFXivF/KCufekjYbVf" crossorigin="anonymous"></script>
	<script>
		( function ( config ) {
			window.ui = SwaggerUIBundle( {
				url: config.url,
				dom_id: '#swagger-ui',
				deepLinking: true,
				docExpansion: 'none',
				filter: true,
				tryItOutEnabled: false,
				// Con la sesión iniciada, «Try it out» se autentica con la cookie + nonce de WordPress.
				requestInterceptor: function ( req ) {
					if ( config.nonce && req.url.indexOf( '/wp-json/' ) !== -1 ) {
						req.headers[ 'X-WP-Nonce' ] = config.nonce;
						req.credentials = 'same-origin';
					}
					return req;
				}
			} );
		} )( <?php echo wp_json_encode( $config ); ?> );
	</script>
</body>
</html>
	<?php
	exit;
}, 1 );