Refactors the main server.js, and moves welcome msg to separate file

services/print-message.js

@@ -0,0 +1,42 @@
+/**
+ * A function that prints a welcome message to the user when they start the app
+ * Contains essential info about restarting and managing the container or service
+ * @param String ip: The users local IP address
+ * @param Integer port: the port number the app is running at
+ * @param Boolean isDocker: whether or not the app is being run within a container
+ * @returns A string formatted for the terminal
+ */
+module.exports = (ip, port, isDocker) => {
+  let msg = '';
+  const chars = {
+    RESET: '\x1b[0m',
+    CYAN: '\x1b[36m',
+    GREEN: '\x1b[32m',
+    BLUE: '\x1b[34m',
+    BRIGHT: '\x1b[1m',
+    BR: '\n',
+  };
+  const stars = (count) => new Array(count).fill('*').join('');
+  const line = (count) => new Array(count).fill('━').join('');
+  const blanks = (count) => new Array(count).fill(' ').join('');
+  if (isDocker) {
+    const containerId = process.env.HOSTNAME || undefined;
+    msg = `${chars.BLUE}${stars(91)}${chars.BR}${chars.RESET}`
+      + `${chars.CYAN}Welcome to Dashy! 🚀${chars.RESET}${chars.BR}`
+      + `${chars.GREEN}Your new dashboard is now up and running `
+      + `${containerId ? `in container ID ${containerId}` : 'with Docker'}${chars.BR}`
+      + `${chars.GREEN}After updating your config file, run  `
+      + `'${chars.BRIGHT}docker exec -it ${containerId || '[container-id]'} yarn build`
+      + `${chars.RESET}${chars.GREEN}' to rebuild${chars.BR}`
+      + `${chars.BLUE}${stars(91)}${chars.BR}${chars.RESET}`;
+  } else {
+    msg = `${chars.GREEN}┏${line(75)}┓${chars.BR}`
+      + `┃ ${chars.CYAN}Welcome to Dashy! 🚀${blanks(55)}${chars.GREEN}┃${chars.BR}`
+      + `┃ ${chars.CYAN}Your new dashboard is now up and running at ${chars.BRIGHT}`
+      + `http://${ip}:${port}${chars.RESET}${blanks(18 - ip.length)}${chars.GREEN}┃${chars.BR}`
+      + `┃ ${chars.CYAN}After updating your config file, run '${chars.BRIGHT}yarn build`
+      + `${chars.RESET}${chars.CYAN}' to rebuild the app${blanks(6)}${chars.GREEN}┃${chars.BR}`
+      + `┗${line(75)}┛${chars.BR}${chars.BR}`;
+  }
+  return msg;
+};