2 * Sone - AbstractPostBuilder.java - Copyright © 2013–2020 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sone.data.impl;
20 import static com.google.common.base.Preconditions.checkState;
22 import net.pterodactylus.sone.data.Post;
23 import net.pterodactylus.sone.database.PostBuilder;
24 import net.pterodactylus.sone.database.SoneProvider;
27 * Abstract {@link PostBuilder} implementation. It stores the state of the new
28 * post and performs validation, you only need to implement {@link #build()}.
30 public abstract class AbstractPostBuilder implements PostBuilder {
32 /** The Sone provider for the created posts. */
33 protected final SoneProvider soneProvider;
35 /** Wether to create a post with a random ID. */
36 protected boolean randomId;
38 /** The ID of the post. */
41 /** The sender of the post. */
42 protected String senderId;
44 /** Whether to use the current time when creating the post. */
45 protected boolean currentTime;
47 /** The time of the post. */
50 /** The text of the post. */
51 protected String text;
53 /** The (optional) recipient of the post. */
54 protected String recipientId;
57 * Creates a new abstract post builder.
62 public AbstractPostBuilder(SoneProvider soneProvider) {
63 this.soneProvider = soneProvider;
67 // POSTBUILDER METHODS
74 public PostBuilder copyPost(Post post) {
75 this.randomId = false;
76 this.id = post.getId();
77 this.senderId = post.getSone().getId();
78 this.currentTime = false;
79 this.time = post.getTime();
80 this.text = post.getText();
81 this.recipientId = post.getRecipientId().orNull();
89 public PostBuilder randomId() {
98 public PostBuilder withId(String id) {
107 public PostBuilder from(String senderId) {
108 this.senderId = senderId;
116 public PostBuilder currentTime() {
125 public PostBuilder withTime(long time) {
134 public PostBuilder withText(String text) {
143 public PostBuilder to(String recipientId) {
144 this.recipientId = recipientId;
153 * Validates the state of this post builder.
155 * @throws IllegalStateException
156 * if the state is not valid for building a new post
158 protected void validate() throws IllegalStateException {
159 checkState((randomId && (id == null)) || (!randomId && (id != null)), "exactly one of random ID or custom ID must be set");
160 checkState(senderId != null, "sender must not be null");
161 checkState((currentTime && (time == 0)) || (!currentTime && (time > 0)), "one of current time or custom time must be set");
162 checkState((text != null) && !text.trim().isEmpty(), "text must not be empty");
163 checkState((recipientId == null) || !recipientId.equals(senderId), "sender and recipient must not be the same");