Discord 消息提醒机器人

之前一直在用Discord的GinaBot消息提醒机器人，但是可惜分家后，GinaBot跑去HIVE链上去了

后来STEEM这边的开发者也开发了2款Discord消息提醒机器人，他们分别是MimeeBot 和RUPA机器人

这两款我都试过，体验都挺一般的。两款都不能设置接受哪种消息提醒，所以都是一窝蜂的把所有记录推送给你。如果你的帖子被几百个账号点赞，那消息提醒可把手机折腾要死。没用的提醒一大堆，有用的提醒又掩盖在一堆没用的消息提醒里面。

而我只想要回复，转账，关注，踩，mention这类的消息，所以就打算自己写个Discord 消息提醒机器人

Discord机器人比我想象的简单，尤其使用了一个叫eris的库，省下了很多时间来美化消息提醒

完成后的效果：

机器人代码：

const Eris = require("eris");
const steem = require('steem');
const bot = new Eris("TOKEN");
const channelId = 'CHANNEL ID';
const account = 'STEEM ID';

function start() {
    steem.api.streamTransactions("head", function (err, result) {
        if (!err) {
            if (result) {
                let op = result.operations[0];
                const time = new Date();
                const type = op[0];
                const params = op[1];
                switch (type) {
                    case 'comment': {
                        const isRootPost = !params.parent_author;
                        //Find reply
                        if (!isRootPost && params.parent_author === account) {
                            let content = `@${params.parent_author}:\n@${params.author} has commented on your post`;
                            let title = `${params.permlink}`;
                            let comment = params.body.substring(0, 100);
                            let url = `https://steem.buzz/@${params.author}/${params.permlink}`;
                            createMessge(content, title, comment, url, time);
                        }

                        //Find Mention
                        if (params.body.includes(`@${account}`)) {
                            let content = '';
                            let title = '';
                            let comment = '';
                            let url = '';
                            if (isRootPost) {
                                content = `@${account}:\n"@${account}" was  mentioned by @${params.author} in a post`;
                                title = `${params.title}`;
                                comment = params.body.substring(0, 100);
                            } else {
                                content = `@${account}:\n"@${account}" was  mentioned by @${params.author} in a comment`;
                                title = `${params.permlink}`;
                                comment = params.body.substring(0, 100);
                            }
                            url = `https://steem.buzz/@${params.author}/${params.permlink}`;
                            createMessge(content, title, comment, url, time);
                        }
                        break;
                    }

                    case 'custom_json': {
                        let json = {};
                        try {
                            json = JSON.parse(params.json);

                        } catch (err) {
                            console.log('Wrong json format on custom_json', err);
                        }
                        switch (params.id) {
                            case 'follow': {
                                /** Find follow */
                                if (json[0] === 'follow' && json[1].following === account) {
                                    let content = `@${json[1].follower} now follows you`;
                                    let title = '';
                                    let comment = '';
                                    let url = '';
                                    createMessge(content, title, comment, url, time);
                                }
                            }
                        }
                        break;
                    }

                    case 'transfer': {
                        if (params.to === account) {
                            let content = `@${params.from} transferred ${params.amount} to you`;
                            let title = '';
                            let comment = params.memo;
                            let url = '';
                            createMessge(content, title, comment, url, time);
                        }
                        break;
                    }
                    case 'vote': {
                        //Find downvote
                        if (params.weight < 0 && params.author === account) {
                            let content = `@${params.voter} downvoted your post`;
                            let title = params.permlink;
                            let comment = '';
                            let url = `https://steem.buzz/@${params.author}/${params.permlink}`;
                            createMessge(content, title, comment, url, time);
                        }
                    }
                }
            }
        } else {
            sleep(2000).then(() => {
                console.error(err);
                start();
            });
        }
    });
}




const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));


bot.once("ready", () => { // When the bot is ready
    console.log("Ready!"); // Log "Ready!"
    console.log(new Date());
    start();

});



function createMessge(content, title, comment, url, time) {
    bot.createMessage(channelId, {
        content: content,
        embed: {
            title: title,
            color: 0x008000,
            url: url,
            description: comment,
            footer: {
                text: `Time:${time}`
            }
        }
    })
}

bot.connect(); // Get the bot to connect to Discord

并不是很完善的代码，但是基本消息提醒都有了。