const {JSONARRAYType} = require('../../database-types');

module.exports = (sequelize, Sequelize) => {
  const Thread = sequelize.define('Thread', {
    threadId: Sequelize.STRING,
    subject: Sequelize.STRING,
    snippet: Sequelize.STRING,
    unreadCount: Sequelize.INTEGER,
    starredCount: Sequelize.INTEGER,
    firstMessageDate: Sequelize.DATE,
    lastMessageDate: Sequelize.DATE,
    lastMessageReceivedDate: Sequelize.DATE,
    lastMessageSentDate: Sequelize.DATE,
    participants: JSONARRAYType('participants'),
  }, {
    classMethods: {
      associate: ({Category, Message, ThreadCategory}) => {
        Thread.belongsToMany(Category, {through: ThreadCategory})
        Thread.hasMany(Message, {as: 'messages'})
      },
    },
    instanceMethods: {
      toJSON: function toJSON() {
        return {
          id: this.id,
          participants: this.participants,
          subject: this.subject,
          snippet: this.snippet,
          unread: this.unreadCount > 0,
          starred: this.starredCount > 0,
          last_message_timestamp: this.lastMessageDate ? this.lastMessageDate.getTime() / 1000.0 : null,
          last_message_sent_timestamp: this.lastMessageSentDate ? this.lastMessageSentDate.getTime() / 1000.0 : null,
          last_message_received_timestamp: this.lastMessageReceivedDate ? this.lastMessageReceivedDate.getTime() / 1000.0 : null,
        };
      },
    },
  });

  return Thread;
};