text: 'use strict';
  
  const APIMessage = require('./APIMessage');
  const Base = require('./Base');
  const ClientApplication = require('./ClientApplication');
  const MessageAttachment = require('./MessageAttachment');
  const Embed = require('./MessageEmbed');
  const Mentions = require('./MessageMentions');
  const ReactionCollector = require('./ReactionCollector');
  const { Error, TypeError } = require('../errors');
  const ReactionManager = require('../managers/ReactionManager');
  const Collection = require('../util/Collection');
  const { MessageTypes } = require('../util/Constants');
  const MessageFlags = require('../util/MessageFlags');
  const Permissions = require('../util/Permissions');
  const Util = require('../util/Util');
  
  /**
   * Represents a message on Discord.
   * @extends {Base}
   */
  class Message extends Base {
    /**
     * @param {Client} client The instantiating client
     * @param {Object} data The data for the message
     * @param {TextChannel|DMChannel} channel The channel the message was sent in
     */
    constructor(client, data, channel) {
      super(client);
  
      /**
       * The channel that the message was sent in
       * @type {TextChannel|DMChannel}
       */
      this.channel = channel;
  
      /**
       * Whether this message has been deleted
       * @type {boolean}
       */
      this.deleted = false;
  
      if (data) this._patch(data);
    }
  
    _patch(data) {
      /**
       * The ID of the message
       * @type {Snowflake}
       */
      this.id = data.id;
  
      /**
       * The type of the message
       * @type {MessageType}
       */
      this.type = MessageTypes[data.type];
  
      /**
       * The content of the message
       * @type {string}
       */
      this.content = data.content;
  
      /**
       * The author of the message
       * @type {?User}
       */
      this.author = data.author ? this.client.users.add(data.author, !data.webhook_id) : null;
  
      /**
       * Whether or not this message is pinned
       * @type {boolean}
       */
      this.pinned = data.pinned;
  
      /**
       * Whether or not the message was Text-To-Speech
       * @type {boolean}
       */
      this.tts = data.tts;
  
      /**
       * A random number or string used for checking message delivery
       * <warn>This is only received after the message was sent successfully, and
       * lost if re-fetched</warn>
       * @type {?string}
       */
      this.nonce = data.nonce;
  
      /**
       * Whether or not this message was sent by Discord, not actually a user (e.g. pin notifications)
       * @type {boolean}
       */
      this.system = data.type !== 0;
  
      /**
       * A list of embeds in the message - e.g. YouTube Player
       * @type {MessageEmbed[]}
       */
      this.embeds = (data.embeds || []).map(e => new Embed(e, true));
  
      /**
       * A collection of attachments in the message - e.g. Pictures - mapped by their ID
       * @type {Collection<Snowflake, MessageAttachment>}
       */
      this.attachments = new Collection();
      if (data.attachments) {
        for (const attachment of data.attachments) {
          this.attachments.set(attachment.id, new MessageAttachment(attachment.url, attachment.filename, attachment));
        }
      }
  
      /**
       * The timestamp the message was sent at
       * @type {number}
       */
      this.createdTimestamp = new Date(data.timestamp).getTime();
  
      /**
       * The timestamp the message was last edited at (if applicable)
       * @type {?number}
       */
      this.editedTimestamp = data.edited_timestamp ? new Date(data.edited_timestamp).getTime() : null;
  
      /**
       * A manager of the reactions belonging to this message
       * @type {ReactionManager}
       */
      this.reactions = new ReactionManager(this);
      if (data.reactions && data.reactions.length > 0) {
        for (const reaction of data.reactions) {
          this.reactions.add(reaction);
        }
      }
  
      /**
       * All valid mentions that the message contains
       * @type {MessageMentions}
       */
      this.mentions = new Mentions(this, data.mentions, data.mention_roles, data.mention_everyone, data.mention_channels);
  
      /**
       * ID of the webhook that sent the message, if applicable
       * @type {?Snowflake}
       */
      this.webhookID = data.webhook_id || null;
  
      /**
       * Supplemental application information for group activities
       * @type {?ClientApplication}
       */
      this.application = data.application ? new ClientApplication(this.client, data.application) : null;
  
      /**
       * Group activity
       * @type {?MessageActivity}
       */
      this.activity = data.activity
        ? {
            partyID: data.activity.party_id,
            type: data.activity.type,
          }
        : null;
  
      /**
       * The previous versions of the message, sorted with the most recent first
       * @type {Message[]}
       * @private
       */
      this._edits = [];
  
      if (this.member && data.member) {
        this.member._patch(data.member);
      } else if (data.member && this.guild && this.author) {
        this.guild.members.add(Object.assign(data.member, { user: this.author }));
      }
  
      /**
       * Flags that are applied to the message
       * @type {Readonly<MessageFlags>}
       */
      this.flags = new MessageFlags(data.flags).freeze();
  
      /**
       * Reference data sent in a crossposted message.
       * @typedef {Object} MessageReference
       * @property {string} channelID ID of the channel the message was crossposted from
       * @property {?string} guildID ID of the guild the message was crossposted from
       * @property {?string} messageID ID of the message that was crossposted
       */
  
      /**
       * Message reference data
       * @type {?MessageReference}
       */
      this.reference = data.message_reference
        ? {
            channelID: data.message_reference.channel_id,
            guildID: data.message_reference.guild_id,
            messageID: data.message_reference.message_id,
          }
        : null;
    }
  
    /**
     * Whether or not this message is a partial
     * @type {boolean}
     * @readonly
     */
    get partial() {
      return typeof this.content !== 'string' || !this.author;
    }
  
    /**
     * Updates the message.
     * @param {Object} data Raw Discord message update data
     * @private
     */
    patch(data) {
      const clone = this._clone();
      this._edits.unshift(clone);
  
      if ('edited_timestamp' in data) this.editedTimestamp = new Date(data.edited_timestamp).getTime();
      if ('content' in data) this.content = data.content;
      if ('pinned' in data) this.pinned = data.pinned;
      if ('tts' in data) this.tts = data.tts;
      if ('embeds' in data) this.embeds = data.embeds.map(e => new Embed(e, true));
      else this.embeds = this.embeds.slice();
  
      if ('attachments' in data) {
        this.attachments = new Collection();
        for (const attachment of data.attachments) {
          this.attachments.set(attachment.id, new MessageAttachment(attachment.url, attachment.filename, attachment));
        }
      } else {
        this.attachments = new Collection(this.attachments);
      }
  
      this.mentions = new Mentions(
        this,
        'mentions' in data ? data.mentions : this.mentions.users,
        'mention_roles' in data ? data.mention_roles : this.mentions.roles,
        'mention_everyone' in data ? data.mention_everyone : this.mentions.everyone,
        'mention_channels' in data ? data.mention_channels : this.mentions.crosspostedChannels,
      );
  
      this.flags = new MessageFlags('flags' in data ? data.flags : 0).freeze();
    }
  
    /**
     * Represents the author of the message as a guild member.
     * Only available if the message comes from a guild where the author is still a member
     * @type {?GuildMember}
     * @readonly
     */
    get member() {
      return this.guild ? this.guild.member(this.author) || null : null;
    }
  
    /**
     * The time the message was sent at
     * @type {Date}
     * @readonly
     */
    get createdAt() {
      return new Date(this.createdTimestamp);
    }
  
    /**
     * The time the message was last edited at (if applicable)
     * @type {?Date}
     * @readonly
     */
    get editedAt() {
      return this.editedTimestamp ? new Date(this.editedTimestamp) : null;
    }
  
    /**
     * The guild the message was sent in (if in a guild channel)
     * @type {?Guild}
     * @readonly
     */
    get guild() {
      return this.channel.guild || null;
    }
  
    /**
     * The url to jump to this message
     * @type {string}
     * @readonly
     */
    get url() {
      return `https://discordapp.com/channels/${this.guild ? this.guild.id : '@me'}/${this.channel.id}/${this.id}`;
    }
  
    /**
     * The message contents with all mentions replaced by the equivalent text.
     * If mentions cannot be resolved to a name, the relevant mention in the message content will not be converted.
     * @type {string}
     * @readonly
     */
    get cleanContent() {
      // eslint-disable-next-line eqeqeq
      return this.content != null ? Util.cleanContent(this.content, this) : null;
    }
  
    /**
     * Creates a reaction collector.
     * @param {CollectorFilter} filter The filter to apply
     * @param {ReactionCollectorOptions} [options={}] Options to send to the collector
     * @returns {ReactionCollector}
     * @example
     * // Create a reaction collector
     * const filter = (reaction, user) => reaction.emoji.name === '👌' && user.id === 'someID';
     * const collector = message.createReactionCollector(filter, { time: 15000 });
     * collector.on('collect', r => console.log(`Collected ${r.emoji.name}`));
     * collector.on('end', collected => console.log(`Collected ${collected.size} items`));
     */
    createReactionCollector(filter, options = {}) {
      return new ReactionCollector(this, filter, options);
    }
  
    /**
     * An object containing the same properties as CollectorOptions, but a few more:
     * @typedef {ReactionCollectorOptions} AwaitReactionsOptions
     * @property {string[]} [errors] Stop/end reasons that cause the promise to reject
     */
  
    /**
     * Similar to createReactionCollector but in promise form.
     * Resolves with a collection of reactions that pass the specified filter.
     * @param {CollectorFilter} filter The filter function to use
     * @param {AwaitReactionsOptions} [options={}] Optional options to pass to the internal collector
     * @returns {Promise<Collection<string, MessageReaction>>}
     * @example
     * // Create a reaction collector
     * const filter = (reaction, user) => reaction.emoji.name === '👌' && user.id === 'someID'
     * message.awaitReactions(filter, { time: 15000 })
     *   .then(collected => console.log(`Collected ${collected.size} reactions`))
     *   .catch(console.error);
     */
    awaitReactions(filter, options = {}) {
      return new Promise((resolve, reject) => {
        const collector = this.createReactionCollector(filter, options);
        collector.once('end', (reactions, reason) => {
          if (options.errors && options.errors.includes(reason)) reject(reactions);
          else resolve(reactions);
        });
      });
    }
  
    /**
     * An array of cached versions of the message, including the current version
     * Sorted from latest (first) to oldest (last)
     * @type {Message[]}
     * @readonly
     */
    get edits() {
      const copy = this._edits.slice();
      copy.unshift(this);
      return copy;
    }
  
    /**
     * Whether the message is editable by the client user
     * @type {boolean}
     * @readonly
     */
    get editable() {
      return this.author.id === this.client.user.id;
    }
  
    /**
     * Whether the message is deletable by the client user
     * @type {boolean}
     * @readonly
     */
    get deletable() {
      return (
        !this.deleted &&
        (this.author.id === this.client.user.id ||
          (this.guild && this.channel.permissionsFor(this.client.user).has(Permissions.FLAGS.MANAGE_MESSAGES, false)))
      );
    }
  
    /**
     * Whether the message is pinnable by the client user
     * @type {boolean}
     * @readonly
     */
    get pinnable() {
      return (
        this.type === 'DEFAULT' &&
        (!this.guild || this.channel.permissionsFor(this.client.user).has(Permissions.FLAGS.MANAGE_MESSAGES, false))
      );
    }
  
    /**
     * Options that can be passed into editMessage.
     * @typedef {Object} MessageEditOptions
     * @property {string} [content] Content to be edited
     * @property {Object} [embed] An embed to be added/edited
     * @property {string|boolean} [code] Language for optional codeblock formatting to apply
     */
  
    /**
     * Edits the content of the message.
     * @param {StringResolvable|APIMessage} [content] The new content for the message
     * @param {MessageEditOptions|MessageEmbed} [options] The options to provide
     * @returns {Promise<Message>}
     * @example
     * // Update the content of a message
     * message.edit('This is my new content!')
     *   .then(msg => console.log(`Updated the content of a message to ${msg.content}`))
     *   .catch(console.error);
     */
    edit(content, options) {
      const { data } =
        content instanceof APIMessage ? content.resolveData() : APIMessage.create(this, content, options).resolveData();
      return this.client.api.channels[this.channel.id].messages[this.id].patch({ data }).then(d => {
        const clone = this._clone();
        clone._patch(d);
        return clone;
      });
    }
  
    /**
     * Pins this message to the channel's pinned messages.
     * @returns {Promise<Message>}
     */
    pin() {
      return this.client.api
        .channels(this.channel.id)
        .pins(this.id)
        .put()
        .then(() => this);
    }
  
    /**
     * Unpins this message from the channel's pinned messages.
     * @returns {Promise<Message>}
     */
    unpin() {
      return this.client.api
        .channels(this.channel.id)
        .pins(this.id)
        .delete()
        .then(() => this);
    }
  
    /**
     * Adds a reaction to the message.
     * @param {EmojiIdentifierResolvable} emoji The emoji to react with
     * @returns {Promise<MessageReaction>}
     * @example
     * // React to a message with a unicode emoji
     * message.react('🤔')
     *   .then(console.log)
     *   .catch(console.error);
     * @example
     * // React to a message with a custom emoji
     * message.react(message.guild.emojis.cache.get('123456789012345678'))
     *   .then(console.log)
     *   .catch(console.error);
     */
    react(emoji) {
      emoji = this.client.emojis.resolveIdentifier(emoji);
      if (!emoji) throw new TypeError('EMOJI_TYPE');
  
      return this.client.api
        .channels(this.channel.id)
        .messages(this.id)
        .reactions(emoji, '@me')
        .put()
        .then(
          () =>
            this.client.actions.MessageReactionAdd.handle({
              user: this.client.user,
              channel: this.channel,
              message: this,
              emoji: Util.parseEmoji(emoji),
            }).reaction,
        );
    }
  
    /**
     * Deletes the message.
     * @param {Object} [options] Options
     * @param {number} [options.timeout=0] How long to wait to delete the message in milliseconds
     * @param {string} [options.reason] Reason for deleting this message, if it does not belong to the client user
     * @returns {Promise<Message>}
     * @example
     * // Delete a message
     * message.delete()
     *   .then(msg => console.log(`Deleted message from ${msg.author.username}`))
     *   .catch(console.error);
     */
    delete(options = {}) {
      if (typeof options !== 'object') throw new TypeError('INVALID_TYPE', 'options', 'object', true);
      const { timeout = 0, reason } = options;
      if (timeout <= 0) {
        return this.channel.messages.delete(this.id, reason).then(() => this);
      } else {
        return new Promise(resolve => {
          this.client.setTimeout(() => {
            resolve(this.delete({ reason }));
          }, timeout);
        });
      }
    }
  
    /**
     * Replies to the message.
     * @param {StringResolvable|APIMessage} [content=''] The content for the message
     * @param {MessageOptions|MessageAdditions} [options={}] The options to provide
     * @returns {Promise<Message|Message[]>}
     * @example
     * // Reply to a message
     * message.reply('Hey, I\'m a reply!')
     *   .then(() => console.log(`Sent a reply to ${message.author.username}`))
     *   .catch(console.error);
     */
    reply(content, options) {
      return this.channel.send(
        content instanceof APIMessage
          ? content
          : APIMessage.transformOptions(content, options, { reply: this.member || this.author }),
      );
    }
  
    /**
     * Fetch this message.
     * @returns {Promise<Message>}
     */
    fetch() {
      return this.channel.messages.fetch(this.id, true);
    }
  
    /**
     * Fetches the webhook used to create this message.
     * @returns {Promise<?Webhook>}
     */
    fetchWebhook() {
      if (!this.webhookID) return Promise.reject(new Error('WEBHOOK_MESSAGE'));
      return this.client.fetchWebhook(this.webhookID);
    }
  
    /**
     * Suppresses or unsuppresses embeds on a message
     * @param {boolean} [suppress=true] If the embeds should be suppressed or not
     * @returns {Promise<Message>}
     */
    suppressEmbeds(suppress = true) {
      const flags = new MessageFlags(this.flags.bitfield);
  
      if (suppress) {
        flags.add(MessageFlags.FLAGS.SUPPRESS_EMBEDS);
      } else {
        flags.remove(MessageFlags.FLAGS.SUPPRESS_EMBEDS);
      }
  
      return this.edit({ flags });
    }
  
    /**
     * Used mainly internally. Whether two messages are identical in properties. If you want to compare messages
     * without checking all the properties, use `message.id === message2.id`, which is much more efficient. This
     * method allows you to see if there are differences in content, embeds, attachments, nonce and tts properties.
     * @param {Message} message The message to compare it to
     * @param {Object} rawData Raw data passed through the WebSocket about this message
     * @returns {boolean}
     */
    equals(message, rawData) {
      if (!message) return false;
      const embedUpdate = !message.author && !message.attachments;
      if (embedUpdate) return this.id === message.id && this.embeds.length === message.embeds.length;
  
      let equal =
        this.id === message.id &&
        this.author.id === message.author.id &&
        this.content === message.content &&
        this.tts === message.tts &&
        this.nonce === message.nonce &&
        this.embeds.length === message.embeds.length &&
        this.attachments.length === message.attachments.length;
  
      if (equal && rawData) {
        equal =
          this.mentions.everyone === message.mentions.everyone &&
          this.createdTimestamp === new Date(rawData.timestamp).getTime() &&
          this.editedTimestamp === new Date(rawData.edited_timestamp).getTime();
      }
  
      return equal;
    }
  
    /**
     * When concatenated with a string, this automatically concatenates the message's content instead of the object.
     * @returns {string}
     * @example
     * // Logs: Message: This is a message!
     * console.log(`Message: ${message}`);
     */
    toString() {
      return this.content;
    }
  
    toJSON() {
      return super.toJSON({
        channel: 'channelID',
        author: 'authorID',
        application: 'applicationID',
        guild: 'guildID',
        cleanContent: true,
        member: false,
        reactions: false,
      });
    }
  }
  
  module.exports = Message;
  