Main script and config template

config.template.json

@@ -0,0 +1,17 @@
+{
+    "token": "",
+    "guilds": {
+        "name": {
+            "guildID": "",
+            "channelID": "",
+            "whID": "",
+            "whToken": ""
+        },
+        "name2": {
+            "guildID": "",
+            "channelID": "",
+            "whID": "",
+            "whToken": ""
+        }
+    }
+}

index.js

@@ -0,0 +1,120 @@
+const Client = require('eris');
+const config = require('./config.json')
+
+const link = {};
+
+const bot = new Client(config.token, {
+    defaultImageFormat: 'png',
+    defaultImageSize: 1024,
+    autoreconnect: true,
+    messageLimit: 25,
+});
+
+bot.connect();
+
+bot.once('ready',() => {
+    console.log('Ready!');
+
+    for (const val of Object.values(config.guilds)) {
+        const botGuild = bot.guilds.get(val.guildID)
+        if (!botGuild) {
+            console.log(`Bot not in the guild: ${val.guildID}`)
+        } else {
+            link[val.guildID] = val;
+            bot.executeWebhook(val.whID, val.whToken, {
+                username: bot.user.username,
+                avatarURL: bot.user.avatarURL,
+                content: 'Bot Ready - Cross Server system operational!',
+            })
+        }
+
+    }
+})
+
+async function triggerWH(guild, user, content) {
+    try {
+        await bot.executeWebhook(link[guild].whID, link[guild].whToken, {
+            username: `${user.username}#${user.discriminator}`,
+            avatarURL: user.avatarURL,
+            content: content,
+        });
+    } catch (err) {
+        const botGuild = bot.guilds.get(guild.guildID);
+        const errMsg = botGuild 
+            ? `WebHook unavailable in ${botGuild.name}.`
+            : `Guild unavailable: ${guild.guildID}.`
+
+        console.log(errMsg);
+
+        for (const guild in link) {
+            if (link[guild].guildID === guild.guildID) {
+                continue;
+            }
+            try {
+                await bot.executeWebhook(link[guild].whID, link[guild].whToken, {
+                    username: bot.user.username,
+                    avatarURL: bot.user.avatarURL,
+                    content: errMsg,
+                })
+            } catch (e) {
+                // Do nothing since it would already be handled by another triggerWH
+            }
+        }
+    }
+
+}
+
+bot.on('messageCreate', msg => {
+    if (!msg.author || msg.author.bot || !msg.channel.guild) {
+        return;
+    }
+
+    const cur = link[msg.channel.guild.id]
+    if (!cur || msg.channel.id != cur.channelID) {
+        return;
+    }
+
+    const attachments = msg.attachments.length > 0
+            ? msg.attachments.map(a => a.url).join('\n')
+            : '';
+
+    const fullMsg = `${attachments}\n${msg.content}`
+    if (fullMsg.length > 2000) {
+        return msg.channel.createMessage(`${msg.author.mention}: Message too long!`);
+    }
+
+    for (const guild in link) {
+        if (link[guild].guildID === msg.channel.guild.id) {
+            continue;
+        }
+        triggerWH(guild, msg.author, fullMsg);
+    }
+})
+
+bot.on('messageUpdate', (msg, oldMsg) => {
+    // !oldMsg = message not cached = don't log the update
+    if (!msg.author || msg.author.bot || !msg.channel.guild || !oldMsg) {
+        return;
+    }
+
+    const cur = link[msg.channel.guild.id]
+    if (!cur || msg.channel.id != cur.channelID) {
+        return;
+    }
+
+    const attachments = msg.attachments.length > 0
+            ? msg.attachments.map(a => a.url).join('\n')
+            : '';
+
+    const fullMsg = `${attachments}\n${msg.content} *(edited)*`
+    if (fullMsg.length > 2000) {
+        return msg.channel.createMessage(`${msg.author.mention}: Message too long!`);
+    }
+
+    for (const guild in link) {
+        if (link[guild].guildID === msg.channel.guild.id) {
+            continue;
+        }
+        triggerWH(guild, msg.author, fullMsg);
+    }
+})