class String

# File lib/fat_fingers.rb, line 14
def clean_up_typoed_email
  downcase.
  remove_mailto.
  remove_invalid_characters.
  fix_transposed_periods.
  remove_period_around_at_sign.
  handle_different_country_tlds.
  fix_coms_with_appended_letters.
  clean_up_funky_coms.
  clean_up_funky_nets.
  clean_up_funky_orgs.
  clean_up_gmail.
  clean_up_googlemail.
  clean_up_hotmail.
  clean_up_aol.
  clean_up_yahoo.
  clean_up_other_providers.
  clean_up_known_coms.
  add_a_period_if_they_forgot_it
end

# File lib/fat_fingers.rb, line 114
def add_a_period_if_they_forgot_it
  gsub(/([^\.])(com|org|net)$/, '\1.\2')
end

# File lib/fat_fingers.rb, line 98
def clean_up_aol
  gsub(/@(ol|ao|ail)\./,"@aol.")
end

# File lib/fat_fingers.rb, line 69
def clean_up_funky_coms
  gsub(/\.c*(c|ck|ci|coi|l|m|n|o|op|cp|0|9)*m+o*$/,".com").
  gsub(/\.(c|f|v|x|vc|xc)o+(m|n)$/,".com")
end

# File lib/fat_fingers.rb, line 74
def clean_up_funky_nets
  gsub(/\.(nte*|n*et*)$/, ".net")
end

# File lib/fat_fingers.rb, line 78
def clean_up_funky_orgs
  gsub(/\.og?r?g{0,2}$/, ".org") # require the o, to not false-positive .gr e-mails
end

# File lib/fat_fingers.rb, line 86
def clean_up_gmail
  gsub(/@ga?e?i?o?r?g?[nm]{0,2}s?[ail]{1,2}[aiklmou]{0,3}\.(?!gov)(?!edu)(?!ac.in)/,"@gmail.") # match a broad variety of mispellings of gmail, but not if it's .gov or .edu
end

# File lib/fat_fingers.rb, line 82
def clean_up_googlemail
  gsub(/@go{0,3}g{0,2}o?le?[mn]?[ail]{1,2}m?[aikl]{0,3}\.(?!gov)(?!edu)(?!ac.in)/,"@googlemail.")
end

# File lib/fat_fingers.rb, line 90
def clean_up_hotmail
  gsub(/@h(i|o|p)?y?t?o?a?r?m?n?t?m?[aikl]{1,3}l?\./,"@hotmail.")
end

# File lib/fat_fingers.rb, line 110
def clean_up_known_coms
  gsub(/(@aol|@googlemail|@gmail|@hotmail|@yahoo|@icloud|@outlook)\.(co|net|org)$/, '\1.com')
end

# File lib/fat_fingers.rb, line 102
def clean_up_other_providers
  gsub(/@co?(m|n)a?cas?t{0,2}\./,"@comcast.").
  gsub(/@sbc?gl?ob[al]{0,2}l?\./, "@sbcglobal.").
  gsub(/@ver?i?z?on\./,"@verizon.").
  gsub(/@icl{0,2}o?u?d\./,"@icloud.").
  gsub(/@outl?ook?\./,"@outlook.")
end

# File lib/fat_fingers.rb, line 94
def clean_up_yahoo
  gsub(/@(ya|yh|ua|ah)+h*a*o+\./,"@yahoo.")
end

# File lib/fat_fingers.rb, line 62
def fix_coms_with_appended_letters
  gsub(/\.co[mn]\.com/, ".com").
  gsub(/\.com\.$/, ".com").
  gsub(/\.com(?!cast|\.|@).{1,3}$/, ".com"). # fix up to three extra letters after .com as long as they're not .comcast or .com.* (and as long as they're not before the @)
  gsub(/\.co[^op]$/, ".com")
end

# File lib/fat_fingers.rb, line 47
def fix_transposed_periods
  gsub(/c\.om$/, ".com").
  gsub(/n\.et$/, ".net")
  # can't do "o.gr" => ".org", as ".gr" is a valid TLD
end

# File lib/fat_fingers.rb, line 57
def handle_different_country_tlds
  gsub(/\.(o\.uk|couk|co\.um)$/, ".co.uk").
  gsub(/\.(cojp|co\.lp)$/, ".co.jp")
end

# File lib/fat_fingers.rb, line 41
def remove_invalid_characters
  gsub(/(\s|\#|\'|\"|\\)*/, "").
  gsub(/(\,|\.\.)/, ".").
  gsub("@@", "@")
end

# File lib/fat_fingers.rb, line 37
def remove_mailto
  gsub(/\Amailto:/, "")
end

# File lib/fat_fingers.rb, line 53
def remove_period_around_at_sign
  gsub(/(\.@|@\.)/, "@")
end