// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import {field, json} from '@nozbe/watermelondb/decorators';
import Model, {Associations} from '@nozbe/watermelondb/Model';

import {MM_TABLES} from '@constants/database';
import {safeParseJSON} from '@utils/helpers';

import type DraftModelInterface from '@typings/database/models/servers/draft';

const {CHANNEL, DRAFT, POST} = MM_TABLES.SERVER;

/**
 * The Draft model represents  the draft state of messages in Direct/Group messages and in channels
 */
export default class DraftModel extends Model implements DraftModelInterface {
    /** table (name) : Draft */
    static table = DRAFT;

    /** associations : Describes every relationship to this table. */
    static associations: Associations = {

        /** A DRAFT can belong to only one CHANNEL  */
        [CHANNEL]: {type: 'belongs_to', key: 'channel_id'},

        /** A DRAFT is associated to only one POST */
        [POST]: {type: 'belongs_to', key: 'root_id'},
    };

    /** channel_id : The foreign key pointing to the channel in which the draft was made */
    @field('channel_id') channelId!: string;

    /** message : The draft message */
    @field('message') message!: string;

    /** root_id : The root_id will be empty most of the time unless the draft relates to a draft reply of a thread */
    @field('root_id') rootId!: string;

    /** files : The files field will hold an array of file objects that have not yet been uploaded and persisted within the FILE table */
    @json('files', safeParseJSON) files!: FileInfo[];
}