# File 'lib/did_you_mean/spell_checker.rb', line 12
def correct(input)
input = normalize(input)
threshold = input.length > 3 ? 0.834 : 0.77
words = @dictionary.select {|word| JaroWinkler.distance(normalize(word), input) >= threshold }
words.reject! {|word| input == word.to_s }
words.sort_by! {|word| JaroWinkler.distance(word.to_s, input) }
words.reverse!
threshold = (input.length * 0.25).ceil
corrections = words.select {|c| Levenshtein.distance(normalize(c), input) <= threshold }
if corrections.empty?
corrections = words.select do |word|
word = normalize(word)
length = input.length < word.length ? input.length : word.length
Levenshtein.distance(word, input) < length
end.first(1)
end
corrections
end