msg.content not being defined - node.js

Question

Okay so I am trying to make an announcement command for my server, but when I try to run this it says: ReferenceError: msg is not defined
I am not sure on what it is that I am doing incorrectly.
Here is the code in question:
'use strict';
//require discord.js package
const Discord = require("discord.js");
const config = require("./config.json")
//Create an instance of a Discord client
const client = new Discord.Client();
//The ready event is vital, only after this will your bot start reacting and responding
client.on('ready', () => {
console.log('I am ready!');
});
//create an event listener for messages
client.on('message', message => {
if (message.content === 'ping') {
message.channel.send('pong');
}
});
if (msg.content === "^ann"){
let channel = client.channels.cache.get('channel id');
msg.channel.send("What is your announcement? (^cancel to cancel)");
const collector = msg.channel.createMessageCollector(m => m.author.id === msg.author.id, { time: 100000000 });
collector.once('collect', m => {
if (m.content == "^cancel") {
m.author.send("Announcement cancelled.");
return;
} else {
var announcement = m.content;
channel.send(announcement);
msg.channel.send("Announcement made!");
return;
}
});
//Do stuff
client.on("message", function (msg) {
if (msg.content.indexOf("^mirror") === 0) {
let item = new Discord.MessageEmbed()
.setImage(msg.author.displayAvatarURL())
.setColor("#E6E6FA")
.setFooter("OMG! WHEW~");
msg.channel.send(item);
}
})
//Bot Token
client.login('token')}
This is what i have for the code that I am working on

Answer 1

The error appears because you have your code outside the message event. So all the code about the message etc. has to be in the message event.
The second thing, I suggest to create 1 message event. I see you have created 2 message events. That is not a big problem, but it will clean your code en is more effective. Now, if someone sends a message, he will check this message 2 times. I hope I made it a little bit clear!