Pipes - Rebecca - JS - Scrabble

scrabble.js

@@ -1,14 +1,128 @@
+const LETTER_VALUES = {
+  a: 1,
+  b: 3,
+  c: 3,
+  d: 2,
+  e: 1,
+  f: 4,
+  g: 2,
+  h: 4,
+  i: 1,
+  j: 8,
+  k: 5,
+  l: 1,
+  m: 3,
+  n: 1,
+  o: 1,
+  p: 3,
+  q: 10,
+  r: 1,
+  s: 1,
+  t: 1,
+  u: 1,
+  v: 4,
+  w: 4,
+  x: 8,
+  y: 4,
+  z: 10,
+};
+
+const UserException = function userException(message) {
+  this.message = message;
+  this.name = 'UserException';
+};
+
 const Scrabble = {
-  score: function(word) {
-    // TODO: implement score
-  }
 
-  // TODO: add the highestScoreFrom method
+  score: function score(word) {
+    if (word.length > 7) {
+      throw new UserException('Words longer than 7 letters are not allowed.');
+    } else if (!(/^[a-zA-Z]+$/.test(word))) {
+      throw new UserException('You must provide a valid word.');
+    } else {
+      let points = 0;
+      word.split('').forEach((char) => {
+        points += LETTER_VALUES[`${char.toLowerCase()}`];
+      });
+      if (word.length === 7) {
+        points += 50;
+      }
+      return points;
+    }
+  },
 
+  tie: function tie(word, maxWord) {
+    if (((word.length === 7) && (maxWord.length !== 7)) || ((word.length < maxWord.length) && (maxWord.length !== 7))) {
+      maxWord = word;
+    }
+    return maxWord;
+  },
+
+  highestScoreFrom: function highestScoreFrom(words) {
+    let maxScore = 0;
+    let maxWord = '';
+    if (words.length === 0) {
+      throw new UserException('You must provide words to score.');
+    } else {
+      words.forEach((word) => {
+        if (this.score(word) === maxScore) {
+          maxWord = this.tie(word, maxWord);
+          maxScore = this.score(maxWord);
+        } else if (this.score(word) > maxScore) {
+          maxScore = this.score(word);
+          maxWord = word;
+        }
+      });
+      return maxWord;
+    }
+  },
 };
 
 Scrabble.Player = class {
-  // TODO: implement the Player class
+  constructor(name) {
+    if (name === undefined) {
+      throw new UserException('You must provide a name');
+    }
+    this.name = name;
+    this.plays = [];
+  }
+
+  play(word) {
+    if (word === undefined || !(/^[a-zA-Z]+$/.test(word))) {
+      throw new UserException('You must provide a word');
+    } else if (this.hasWon()) {
+      return false;
+    } else {
+      this.plays.push(word);
+      return true;
+    }
+  }
+
+  hasWon() {
+    if (this.totalScore() >= 100) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  totalScore() {
+    let result = 0;
+    this.plays.forEach((word) => {
+      result += Scrabble.score(word);
+    });
+    return result;
+  }
+
+  highestScoringWord() {
+    let highestWord = Scrabble.highestScoreFrom(this.plays);
+    return highestWord;
+  }
+
+  highestWordScore() {
+    let highestWordScore = Scrabble.score(this.highestScoringWord());
+    return highestWordScore;
+  }
 };
 
 module.exports = Scrabble;