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src/structures/MessageButton.js

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+'use strict';
+
+const BaseMessageComponent = require('./BaseMessageComponent');
+const { RangeError } = require('../errors');
+const { MessageButtonStyles, MessageComponentTypes } = require('../util/Constants');
+const Util = require('../util/Util');
+
+/**
+ * Represents a button message component.
+ * @extends {BaseMessageComponent}
+ */
+class MessageButton extends BaseMessageComponent {
+  /**
+   * @typedef {BaseMessageComponentOptions} MessageButtonOptions
+   * @property {string} [label] The text to be displayed on this button
+   * @property {string} [customId] A unique string to be sent in the interaction when clicked
+   * @property {MessageButtonStyleResolvable} [style] The style of this button
+   * @property {EmojiIdentifierResolvable} [emoji] The emoji to be displayed to the left of the text
+   * @property {string} [url] Optional URL for link-style buttons
+   * @property {boolean} [disabled=false] Disables the button to prevent interactions
+   */
+
+  /**
+   * @param {MessageButton|MessageButtonOptions} [data={}] MessageButton to clone or raw data
+   */
+  constructor(data = {}) {
+    super({ type: 'BUTTON' });
+
+    this.setup(data);
+  }
+
+  setup(data) {
+    /**
+     * The text to be displayed on this button
+     * @type {?string}
+     */
+    this.label = data.label ?? null;
+
+    /**
+     * A unique string to be sent in the interaction when clicked
+     * @type {?string}
+     */
+    this.customId = data.custom_id ?? data.customId ?? null;
+
+    /**
+     * The style of this button
+     * @type {?MessageButtonStyle}
+     */
+    this.style = data.style ? MessageButton.resolveStyle(data.style) : null;
+
+    /**
+     * Emoji for this button
+     * @type {?RawEmoji}
+     */
+    this.emoji = data.emoji ? Util.resolvePartialEmoji(data.emoji) : null;
+
+    /**
+     * The URL this button links to, if it is a Link style button
+     * @type {?string}
+     */
+    this.url = data.url ?? null;
+
+    /**
+     * Whether this button is currently disabled
+     * @type {boolean}
+     */
+    this.disabled = data.disabled ?? false;
+  }
+
+  /**
+   * Sets the custom id for this button
+   * @param {string} customId A unique string to be sent in the interaction when clicked
+   * @returns {MessageButton}
+   */
+  setCustomId(customId) {
+    this.customId = Util.verifyString(customId, RangeError, 'BUTTON_CUSTOM_ID');
+    return this;
+  }
+
+  /**
+   * Sets the interactive status of the button
+   * @param {boolean} [disabled=true] Whether this button should be disabled
+   * @returns {MessageButton}
+   */
+  setDisabled(disabled = true) {
+    this.disabled = disabled;
+    return this;
+  }
+
+  /**
+   * Set the emoji of this button
+   * @param {EmojiIdentifierResolvable} emoji The emoji to be displayed on this button
+   * @returns {MessageButton}
+   */
+  setEmoji(emoji) {
+    this.emoji = Util.resolvePartialEmoji(emoji);
+    return this;
+  }
+
+  /**
+   * Sets the label of this button
+   * @param {string} label The text to be displayed on this button
+   * @returns {MessageButton}
+   */
+  setLabel(label) {
+    this.label = Util.verifyString(label, RangeError, 'BUTTON_LABEL');
+    return this;
+  }
+
+  /**
+   * Sets the style of this button
+   * @param {MessageButtonStyleResolvable} style The style of this button
+   * @returns {MessageButton}
+   */
+  setStyle(style) {
+    this.style = MessageButton.resolveStyle(style);
+    return this;
+  }
+
+  /**
+   * Sets the URL of this button.
+   * <info>MessageButton#style must be LINK when setting a URL</info>
+   * @param {string} url The URL of this button
+   * @returns {MessageButton}
+   */
+  setURL(url) {
+    this.url = Util.verifyString(url, RangeError, 'BUTTON_URL');
+    return this;
+  }
+
+  /**
+   * Transforms the button to a plain object.
+   * @returns {APIMessageButton} The raw data of this button
+   */
+  toJSON() {
+    return {
+      custom_id: this.customId,
+      disabled: this.disabled,
+      emoji: this.emoji,
+      label: this.label,
+      style: MessageButtonStyles[this.style],
+      type: MessageComponentTypes[this.type],
+      url: this.url,
+    };
+  }
+
+  /**
+   * Data that can be resolved to a MessageButtonStyle. This can be
+   * * MessageButtonStyle
+   * * number
+   * @typedef {number|MessageButtonStyle} MessageButtonStyleResolvable
+   */
+
+  /**
+   * Resolves the style of a button
+   * @param {MessageButtonStyleResolvable} style The style to resolve
+   * @returns {MessageButtonStyle}
+   * @private
+   */
+  static resolveStyle(style) {
+    return typeof style === 'string' ? style : MessageButtonStyles[style];
+  }
+}
+
+module.exports = MessageButton;