/**
 * 爬虫主程序
 * 负责监听任务目录里的新任务，并自动抓取数据保存到数据目录。
 */
import configs from './config.mjs';
import common from './lib/common.mjs';
import TaskMoniter from "./lib/taskMoniter.mjs";
import TaJian from "./lib/tajian.mjs";

import Douyin from './bot/Douyin.mjs';
import Kuaishou from './bot/Kuaishou.mjs';
import Xigua from './bot/Xigua.mjs';
import Bilibili from './bot/Bilibili.mjs';

import cron from 'node-cron';

(async () => {

    const taskMoniter = new TaskMoniter(configs.task_list_dir);
    const tajian = new TaJian(configs.data_save_dir);

    taskMoniter.run();      //监控新任务

    //配置本地cloud server地址，cloud安装参考：./install_cloud.sh
    const heroCloudServer = typeof(configs.cloud_server) != 'undefined' && configs.cloud_server ? configs.cloud_server : '';

    //spider run
    let spider_is_running = false;
    const task_check_time = 20;     //每 20 秒抓取一次
    const task_auto_run = cron.schedule(`*/${task_check_time} * * * * *`, async () =>  {
        if (spider_is_running == true) {return false;}      //避免同时执行多个爬虫任务

        const task = taskMoniter.getNewTask();
        if (!task) {return false;}

        const botName = common.getBotName(task.url);
        console.log('New task %s handle by bot %s.', task.url, botName);
        let bot = null;
        switch (botName) {
        case 'douyin':
            bot = new Douyin(heroCloudServer);
            break;
        case 'kuaishou':
            bot = new Kuaishou(heroCloudServer);
            break;
        case 'xigua':
            bot = new Xigua(heroCloudServer);
            break;
        case 'bilibili':
            bot = new Bilibili(heroCloudServer);
            break;
        }

        if (bot) {
            spider_is_running = true;

            taskMoniter.setTaskRunning(task.id);
            const data = await bot.scrap(task.url);
            //console.log('Data got by bot', data);

            if (typeof(data.done) != 'undefined' && data.done == true) {
                if (
                    await tajian.saveUrlShortcut(task.id, data)
                    && await tajian.saveDescriptionFiles(task.id, data)
                    ) {
                    taskMoniter.setTaskDone(task.id);
            }else {
                taskMoniter.setTaskFailed(task.id);
            }
        }else {
            taskMoniter.setTaskFailed(task.id);
        }

        spider_is_running = false;
    }else {
        console.error('No bot matched with url %s', task.url);
        taskMoniter.setTaskRunning(task.id);
        taskMoniter.setTaskFailed(task.id);
    }
}, {
    scheduled: false
});

    task_auto_run.start();
    console.log('[%s] Spider started.', common.getTimeString());

    //TODO: 对接英雄联盟接口：https://herounion.filesite.io

})().catch(error => {
    console.error("Spider error got:\n%s", error);
    process.exit(1);
});