''' Purpose: translate user text to English
'''

# get access to url support
import url

# CS 1112 translation dictionary -- entries are of form: word,translation
BABEL_FISH_URL = "http://www.cs.virginia.edu/~cs1112/words/babelfish"

#If word is not known, tell user that we cannot translate it --> surround
# with ?"wrd"?
# delimiters for unknown words
UNKNOWN_WORD_START_MARKER = "?"
UNKNOWN_WORD_END_MARKER   = "?"

# get contents of babel fish url as a dictionary
babelfish_dictionary = url.get_dictionary( BABEL_FISH_URL )
#use url.get_dictionary(link) to get the correct format for dict

# get the user text to be translated

''' This part translates only one word!
reply = input( "Enter one word: " ) #just get one word from user
#clean it up
word = reply.strip() #get rid of any accidental leading/trailing whitespaces
word = word.lower() #lower it bc all words in dict are in lower case

#if word is NOT in babelfish --> blows up for now until we handle it later
#so check if word is IN babelfish so that the code doesn't blow up
#when we run the following line

if ( word in babelfish_dictionary ): #checks if word is a key in dictionary
    #then it must have a value
    drow = babelfish_dictionary[ word ] #get value (translation) of
        #key "word" from dictionary

else: #else: want to put ? around the word
    drow = UNKNOWN_WORD_START_MARKER + word + UNKNOWN_WORD_END_MARKER

print( drow ) #print translation
#word = lapizz --> drow = ?lapizz? #because lapizz is not in babelfish
    #so it cannot be translated
'''

########### This part translates a whole sentence ##############
# get user reply
reply = input( "Enter phrase to be translated: " )
text = reply.lower().strip() #strip and lower on the same line

# convert reply into a list of words
# get list because we want to translate ONE word at a time
# convert string to list of string words
words_to_be_translated = text.split()
#print( words_to_be_translated )

# initialize translation accumulator
# going to store final translated STRING after accumulation
translation = ""
# string because final answer is a string
# empty because we don't have anything right now
# when building strings, concatenate two strings into one string with "+"

# process the words for translation one by one. each word contributes to the translation
# for EACH word in list, need to translate it

# dictionary is a set of relationships
    # key : value
    # in this case key   = word (to be translated);
                 # value = translation of key word

#you cannot index into a dictionary:
    #babelfish_dictionary[0] is not a valid operation
    #unless 0 is a key in babelfish_dictionary
# what list are you looking in?
for current_word in words_to_be_translated:
    # whether current word is in the dictionary, determines our translation action

    #you currently have a "key" = current_word
        # and now you need to get the "value"
    #print( 'current_word =', current_word )
    if (current_word in babelfish_dictionary):
        meaning = babelfish_dictionary[ current_word ]
    else:
        meaning = UNKNOWN_WORD_START_MARKER + current_word + UNKNOWN_WORD_END_MARKER

    # variable meaning takes on different values depending
    # on the conditional statement
    translation = translation + meaning + " "

    # meaning = babelfish_dictionary.get( current_word )
    # get() returns the value of current_word;
    #   returns None if the value is None
    # None is a key word! not a string
    #   It's logical expression (like True, False)

# print translation
print( translation )