@Override
public void action(Router router, Request request) {
// Parse album URI
String uri = request.uri;
String id;
Pattern pattern = Pattern.compile("(\\d+)");
Matcher matcher = pattern.matcher(uri);
if (!matcher.find()) {
router.sendJsonError(400, "Bad request");
return;
}
id = matcher.group(1);
switch (request.method) {
case "GET":
actionGetAlbum(router, request, id);
return;
case "POST":
actionPostAlbum(router, request, id);
return;
case "PUT":
actionPutAlbum(router, request, id);
return;
case "DELETE":
actionDeleteAlbum(router, request, id);
return;
}
router.sendJsonError(400, "Bad request");
}
public static void main(String[] args) {
JsonDAOAlbums dao = new JsonDAOAlbums();
Catalog catalog = new Catalog(dao);
Router router = new Router(8080);
router.controllers.add(new AlbumsController(catalog));
router.start();
}
// Returns the JSON Object representing the album having `id`.
private void actionGetAlbum(Router router, Request request, String id) {
for (JsonObject album : catalog.getValuesAs(JsonObject.class)) {
if (album.getString("id").equals(id)) {
router.sendJsonResponse(200, "OK", album);
return;
}
}
router.sendJsonError(404, "Not found");
}
// Update the existing album with `id`.
//
// Display the deleted album.
private void actionDeleteAlbum(Router router, Request request, String id) {
for (JsonObject oalbum : catalog.getValuesAs(JsonObject.class)) {
if (oalbum.getString("id").equals(id)) {
// TODO add model layer and data management
router.sendJsonResponse(200, "OK", oalbum);
return;
}
}
// No album with this ID found, return error
router.sendJsonError(404, "Not found");
}
// Update the existing album with `id`.
//
// Display the modified album.
private void actionPutAlbum(Router router, Request request, String id) {
JsonReader reader = Json.createReader(new StringReader(request.body));
JsonObject album = reader.readObject();
for (JsonObject oalbum : catalog.getValuesAs(JsonObject.class)) {
if (oalbum.getString("id").equals(id)) {
JsonObjectBuilder builder = Json.createObjectBuilder();
for (String key : oalbum.keySet()) {
builder.add(key, oalbum.get(key));
}
for (String key : album.keySet()) {
builder.add(key, album.get(key));
}
// TODO add model layer and data management
router.sendJsonResponse(200, "OK", builder.build());
return;
}
}
// No album with this ID found, return error
router.sendJsonError(404, "Not found");
}
// Create a new album from a JsonRequest.
//
// Display the received album.
private void actionPostAlbum(Router router, Request request, String id) {
JsonReader reader = Json.createReader(new StringReader(request.body));
JsonObject album = reader.readObject();
// TODO add model layer and data management
router.sendJsonResponse(201, "Created", album);
}