Merge pull request #1785 from fatiudeen/fatiudeen-#1

Added Ceaser Cipher

js/Bot.js

@@ -0,0 +1,109 @@
+const Discord = require("discord.js")
+const fetch = require("node-fetch")
+const keepAlive = require("./server")
+const Database = require("@replit/database")
+
+const db = new Database()
+const client = new Discord.Client()
+
+const sadWords = ["sad", "depressed", "unhappy", "angry"]
+
+const starterEncouragements = [
+  "Cheer up!",
+  "Hang in there.",
+  "You are a great person / bot!"
+]
+
+db.get("encouragements").then(encouragements => {
+  if (!encouragements || encouragements.length < 1) {
+    db.set("encouragements", starterEncouragements)
+  }
+})
+
+db.get("responding").then(value => {
+  if (value == null) {
+    db.set("responding", true)
+  }
+})
+
+function updateEncouragements(encouragingMessage) {
+  db.get("encouragements").then(encouragements => {
+    encouragements.push([encouragingMessage])
+    db.set("encouragements", encouragements)
+  })
+}
+
+function deleteEncouragement(index) {
+  db.get("encouragements").then(encouragements => {
+    if (encouragements.length > index) {
+      encouragements.splice(index, 1)
+      db.set("encouragements", encouragements)
+    }
+  })
+}
+
+function getQuote() {
+  return fetch("https://zenquotes.io/api/random")
+    .then(res => {
+      return res.json()
+    })
+    .then(data => {
+      return data[0]["q"] + " -" + data[0]["a"]
+    })
+}
+
+client.on("ready", () => {
+  console.log(`Logged in as ${client.user.tag}!`)
+})
+
+client.on("message", msg => {
+  if (msg.author.bot) return
+
+  if (msg.content === "$inspire") {
+    getQuote().then(quote => msg.channel.send(quote))
+  }
+
+  db.get("responding").then(responding =>{
+    if (responding && sadWords.some(word => msg.content.includes(word))) {
+      db.get("encouragements").then(encouragements => {
+        const encouragement = encouragements[Math.floor(Math.random() * encouragements.length)]
+        msg.reply(encouragement)
+      })
+    }
+  })
+
+
+  if (msg.content.startsWith("$new")) {
+    encouragingMessage = msg.content.split("$new ")[1]
+    updateEncouragements(encouragingMessage)
+    msg.channel.send("New encouraging message added.")
+  }
+
+  if (msg.content.startsWith("$del")) {
+    index = parseInt(msg.content.split("$del ")[1])
+    deleteEncouragement(index)
+    msg.channel.send("Encouraging message deleted.")
+  }
+
+  if (msg.content.startsWith("$list")) {
+    db.get("encouragements").then(encouragements => {
+      msg.channel.send(encouragements)
+    })
+  }
+
+  if (msg.content.startsWith("$responding")) {
+    value = msg.content.split("$responding ")[1]
+
+    if (value.toLowerCase() == "true") {
+      db.set("responding", true)
+      msg.channel.send("Responding is on.")
+    } else {
+       db.set("responding", false)
+      msg.channel.send("Responding is off.")
+    }
+  }
+
+})
+
+keepAlive()
+client.login(TOKEN)

js/Caesar_Cipher.js

@@ -0,0 +1,44 @@
+// An algorithm to solve the Caesar Cipher problem.
+// Example
+// Input:
+// text = ABCD , Key = 13
+// A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
+// 13 shift to A is N
+// 13 shift to B is O
+// 13 shift to C is P
+// 13 shift to D is Q
+
+// Output:
+// NOPQ
+let ceaserCipher = (str) => {
+    //Deciphered reference letters
+    let decoded = {
+      a: 'n', b: 'o', c: 'p',
+      d: 'q', e: 'r', f: 's',
+      g: 't', h: 'u', i: 'v',
+      j: 'w', k: 'x', l: 'y',
+      m: 'z', n: 'a', o: 'b',
+      p: 'c', q: 'd', r: 'e',
+      s: 'f', t: 'g', u: 'h',
+      v: 'i', w: 'j', x: 'k',
+      y: 'l', z: 'm'    
+    }
+
+    //convert the string to lowercase
+    str = str.toLowerCase();
+
+    //decipher the code
+    let decipher = '';
+    for(let i = 0 ; i < str.length; i++){
+      decipher += decoded[str[i]];
+    }
+
+    //return the output
+    return decipher;
+  }
+console.log(ceaserCipher('attackatonce'));
+console.log(ceaserCipher('prashantyadav'));
+
+// Expected output
+// "nggnpxngbapr"
+// "cenfunaglnqni"