+ /**
+ * Returns the fields of this profile.
+ *
+ * @return The fields of this profile
+ */
+ @Nonnull
+ public List<Field> getFields() {
+ return new ArrayList<>(fields);
+ }
+
+ /**
+ * Returns whether this profile contains the given field.
+ *
+ * @param field
+ * The field to check for
+ * @return {@code true} if this profile contains the field, false otherwise
+ */
+ public boolean hasField(@Nonnull Field field) {
+ return fields.contains(field);
+ }
+
+ /**
+ * Returns the field with the given ID.
+ *
+ * @param fieldId
+ * The ID of the field to get
+ * @return The field, or {@code null} if this profile does not contain a
+ * field with the given ID
+ */
+ @Nullable
+ public Field getFieldById(@Nonnull String fieldId) {
+ checkNotNull(fieldId, "fieldId must not be null");
+ for (Field field : fields) {
+ if (field.getId().equals(fieldId)) {
+ return field;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Returns the field with the given name.
+ *
+ * @param fieldName
+ * The name of the field to get
+ * @return The field, or {@code null} if this profile does not contain a
+ * field with the given name
+ */
+ @Nullable
+ public Field getFieldByName(@Nonnull String fieldName) {
+ for (Field field : fields) {
+ if (field.getName().equals(fieldName)) {
+ return field;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Appends a new field to the list of fields.
+ *
+ * @param fieldName
+ * The name of the new field
+ * @return The new field
+ * @throws IllegalArgumentException
+ * if the name is not valid
+ */
+ @Nonnull
+ public Field addField(@Nonnull String fieldName) throws IllegalArgumentException {
+ checkNotNull(fieldName, "fieldName must not be null");
+ if (fieldName.length() == 0) {
+ throw new EmptyFieldName();
+ }
+ if (getFieldByName(fieldName) != null) {
+ throw new DuplicateField();
+ }
+ @SuppressWarnings("synthetic-access")
+ Field field = new Field().setName(fieldName).setValue("");
+ fields.add(field);
+ return field;
+ }
+
+ /**
+ * Moves the given field up one position in the field list. The index of the
+ * field to move must be greater than {@code 0} (because you obviously can
+ * not move the first field further up).
+ *
+ * @param field
+ * The field to move up
+ */
+ public void moveFieldUp(@Nonnull Field field) {
+ checkNotNull(field, "field must not be null");
+ checkArgument(hasField(field), "field must belong to this profile");
+ checkArgument(getFieldIndex(field) > 0, "field index must be > 0");
+ int fieldIndex = getFieldIndex(field);
+ fields.remove(field);
+ fields.add(fieldIndex - 1, field);
+ }
+
+ /**
+ * Moves the given field down one position in the field list. The index of
+ * the field to move must be less than the index of the last field (because
+ * you obviously can not move the last field further down).
+ *
+ * @param field
+ * The field to move down
+ */
+ public void moveFieldDown(@Nonnull Field field) {
+ checkNotNull(field, "field must not be null");
+ checkArgument(hasField(field), "field must belong to this profile");
+ checkArgument(getFieldIndex(field) < fields.size() - 1, "field index must be < " + (fields.size() - 1));
+ int fieldIndex = getFieldIndex(field);
+ fields.remove(field);
+ fields.add(fieldIndex + 1, field);
+ }
+
+ /**
+ * Removes the given field.
+ *
+ * @param field
+ * The field to remove
+ */
+ public void removeField(@Nonnull Field field) {
+ checkNotNull(field, "field must not be null");
+ checkArgument(hasField(field), "field must belong to this profile");
+ fields.remove(field);
+ }
+
+ //
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Returns the index of the field with the given name.
+ *
+ * @param field
+ * The name of the field
+ * @return The index of the field, or {@code -1} if there is no field with
+ * the given name
+ */
+ private int getFieldIndex(@Nonnull Field field) {
+ return fields.indexOf(field);
+ }
+
+ //
+ // INTERFACE Fingerprintable
+ //
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String getFingerprint() {
+ Hasher hash = Hashing.sha256().newHasher();
+ hash.putString("Profile(");
+ if (firstName != null) {
+ hash.putString("FirstName(").putString(firstName).putString(")");
+ }
+ if (middleName != null) {
+ hash.putString("MiddleName(").putString(middleName).putString(")");
+ }
+ if (lastName != null) {
+ hash.putString("LastName(").putString(lastName).putString(")");
+ }
+ if (birthDay != null) {
+ hash.putString("BirthDay(").putInt(birthDay).putString(")");
+ }
+ if (birthMonth != null) {
+ hash.putString("BirthMonth(").putInt(birthMonth).putString(")");
+ }
+ if (birthYear != null) {
+ hash.putString("BirthYear(").putInt(birthYear).putString(")");
+ }
+ if (avatar != null) {
+ hash.putString("Avatar(").putString(avatar).putString(")");
+ }
+ hash.putString("ContactInformation(");
+ for (Field field : fields) {
+ hash.putString(field.getName()).putString("(").putString(field.getValue()).putString(")");
+ }
+ hash.putString(")");
+ hash.putString(")");
+
+ return hash.hash().toString();
+ }
+
+ /**
+ * Container for a profile field.
+ */
+ public class Field {
+
+ /** The ID of the field. */
+ private final String id;
+
+ /** The name of the field. */
+ private String name;
+
+ /** The value of the field. */
+ private String value;
+
+ /**
+ * Creates a new field with a random ID.
+ */
+ private Field() {
+ this(UUID.randomUUID().toString());
+ }
+
+ /**
+ * Creates a new field with the given ID.
+ *
+ * @param id
+ * The ID of the field
+ */
+ private Field(@Nonnull String id) {
+ this.id = checkNotNull(id, "id must not be null");
+ }
+
+ /**
+ * Returns the ID of this field.
+ *
+ * @return The ID of this field
+ */
+ @Nonnull
+ public String getId() {
+ return id;
+ }
+
+ /**
+ * Returns the name of this field.
+ *
+ * @return The name of this field
+ */
+ @Nonnull
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * Sets the name of this field. The name must not be {@code null} and
+ * must not match any other fields in this profile but my match the name
+ * of this field.
+ *
+ * @param name
+ * The new name of this field
+ * @return This field
+ */
+ @Nonnull
+ public Field setName(@Nonnull String name) {
+ checkNotNull(name, "name must not be null");
+ checkArgument(getFieldByName(name) == null, "name must be unique");
+ this.name = name;
+ return this;
+ }
+
+ /**
+ * Returns the value of this field.
+ *
+ * @return The value of this field
+ */
+ @Nullable
+ public String getValue() {
+ return value;
+ }
+
+ /**
+ * Sets the value of this field. While {@code null} is allowed, no
+ * guarantees are made that {@code null} values are correctly persisted
+ * across restarts of the plugin!
+ *
+ * @param value
+ * The new value of this field
+ * @return This field
+ */
+ @Nonnull
+ public Field setValue(@Nullable String value) {
+ this.value = value;
+ return this;
+ }
+
+ //
+ // OBJECT METHODS
+ //
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean equals(Object object) {
+ if (!(object instanceof Field)) {
+ return false;
+ }
+ Field field = (Field) object;
+ return id.equals(field.id);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int hashCode() {
+ return id.hashCode();
+ }
+
+ }
+
+ /**
+ * Exception that signals the addition of a field with an empty name.
+ */
+ public static class EmptyFieldName extends IllegalArgumentException { }
+
+ /**
+ * Exception that signals the addition of a field that already exists.
+ */
+ public static class DuplicateField extends IllegalArgumentException { }
+