I'se A Muggin (Pt. 2)

muggin.js

var _ = require('underscore');

var lessThanSeventy = function(number) {
	if (number === 7) {
		return 'uh';
	}
	if (number === 10) {
		return 'woof';
	}
	if (number % 7 === 0 || number.toString().indexOf('7') !== -1) {
		return 'uh uh';
	}
	if (number % 10 === 0) {
		return 'woof woof'
	}
	return number;
};
var greaterThanSeventy = function(number) {
	var split = number.toString().split('');
	return 'uh ' + lessThanSeventy(parseInt(split[1], 10));
};

var lyrics = _(_.range(1, 81)).chain()
	.map(function(number) {
		if (number === 80) {
			return 'woof woof';
		}
		return number > 70 ? greaterThanSeventy(number) : lessThanSeventy(number);
	})
	.reduce(function(song, number, index) {
		var joined = song + number;
		if (index < 4) {
			return joined + (index === 3 ? '\n' : ', ');
		}
		if (index < 12) {
			return joined + (index % 2 !== 0 ? '\n' : ', ');
		}
		return joined + '\n';
	}, '')
	.value();

var lines = _(lyrics.split('\n')).reduce(function(song, line, index) {
	if (index === 0 || index % 2 === 0) {
		return song + line + '\n';
	}
	return song + line + '\t';
}, '');

console.log(lines);

/*
1, 2, 3, 4
5, 6    uh, 8
9, woof 11, 12
13      uh uh
15      16
uh uh   18
19      woof woof
uh uh   22
23      24
25      26
uh uh   uh uh
29      woof woof
31      32
33      34
uh uh   36
uh uh   38
39      woof woof
41      uh uh
43      44
45      46
uh uh   48
uh uh   woof woof
51      52
53      54
55      uh uh
uh uh   58
59      woof woof
61      62
uh uh   64
65      66
uh uh   68
69      uh uh
uh 1    uh 2
uh 3    uh 4
uh 5    uh 6
uh uh   uh 8
uh 9    woof woof
*/