/**
 * 消息工具。
 *
 * author: Sand
 * since: 1/9/2017
 */
"use strict";

let ObjectUtil = require("./object.util.js");

class MessageUtil {
     /**
     * 将消息的返回结果合并成JSON。
     *
     * @param dataRows
     */
    static fillMessages(dataRows) {
        let messages = {start_id: dataRows.length > 0 ? dataRows[0].msg_id : '', count: dataRows.length, records: []};
        for (let i = 0; i < dataRows.length; i++) {
            let row = dataRows[i];
            let record = {
                id: row.msg_id,
                from: row.from_uid,
                content_type: row.type,
                content: row.content,
                timestamp: ObjectUtil.timestampToLong(row.timestamp)
            };

            if (row.to !== undefined) record.to = row.to;
            if (row.at !== undefined) record.at = row.at;

            messages.records.push(record);
        }

        return messages;
    }
}