#!/usr/bin/python
import cgi,sys,re

array1=[]
array2=[]
response=[]
form = cgi.FieldStorage()

print "Content-type: text/html\n"

def formgen():
  print """
  <html><head><title>madlib form</title></head><body>
  <form name="input" action="madlib.cgi" method="POST">
  <input type="hidden" name="hasformgen" value="true">
  """
    
  filename=form['madlib'].value + '.txt'
  
  print '<input type="hidden" name="filename" value="' + filename + '">'
  
  file=open(filename).read()
  file=str(file)
  
  array1 = re.findall('\{.*?\}', file)
  
  for i in array1:
    array2.append(i[1:-1])
  
  for i in range(len(array2)):
    response.append(array2[i] + ': <input type="text" name="' + array2[i] + '"><br>')
  
  for i in range(len(response)):
    print response[i]

  print """
  <input type="submit" value="Submit">
  </form>
  </body>
  </html>
  """

def display(madlib_file):
  print """
  <html><head><title>madlib results</title></head><body>
  """
  
  file=open(madlib_file).read()
  file=str(file)

  array1 = re.findall('\{.*?\}', file)

  for i in array1:
    array2.append(i[1:-1])
  
  
  for i in range(len(array2)):
    x=array2[i]
    file = re.sub(array1[i], form[x].value, file)
#     
#   for i in range(len(array2)):
#    file = re.sub(array1[i], form[array2[i]].value, madlib_file)
  print '\n' + file + '\n' + "</body></html>"
  
def main():
  gen=form['hasformgen'].value
  if gen=='true':
    madfile=form['filename'].value
    display(madfile)
  else:
    formgen()

main()