#skrár: flights.txt  -> lesa úr henni
# inniheldur: nöfn lönd
# notum split()
# munum þurfa nota dict þar sem nöfnin eru key
# 1. prenta út öll nöfn í stafrófsröð
# 2. prenta út þau lönd sem þau hafa heimsótt
# 3. prenta út nafn sá aðila sem hefur ferðast til flestra landa og hversu marga landa hann hvefur farið til

#read_file  -> skilar lista af listum
#my_dict  -> skilar dict nafn = key   lönd = value
#max_flyers
"""
def check_file(filename):
    try:
        with open(filename, 'r') as f:
            return f
    except FileNotFoundError:
        return None
"""

def read_file(filename):
    flyer_list = []
    with open(filename, 'r') as f:
        for line in f:
            flyer_list.append(line.split())
    return flyer_list



def make_dict(flyer_list):
    flight_dict = {}
    # loop through the inner list of our f_list
    #check if names in innerlist are in dict, if so add country to the key
    for inner_list in flyer_list:
        name = inner_list[0]
        country = inner_list[1]
        if name in flight_dict:
            flight_dict[name].append(country)
        else:
            flight_dict[name] = [country]
    return flight_dict

def clean_dict(flight_dict):
    #flight_dict = sorted(flight_dict)

    for flyer in flight_dict:           #for flyer, country þá sækir bæði key og value
        flight_dict[flyer] = sorted(set(flight_dict[flyer]))
    return sorted(flight_dict.items())



def print_flight(final_dict):
    for t in final_dict:
        print(t[0] + ':')
        country_list = t[1]
        for country in country_list:
            print('\t'+country)


def frequent_flyer(flight_list):
    max_val = 0
    max_name = ''
    for t in flight_list:
        name = t[0]
        country_list = t[1]
        curr_val = len(country_list)
        if curr_val > max_val:
            max_val = curr_val
            max_name = name
    print('{} has been to {} countries'.format(max_name, max_val))



def main():
    #read from file
    filename = ('/Users/kingamaris/Desktop/2019-T-111-PROG-master 3/projects/p9/flights.txt')
    if filename is None:
        print()
    else:
        flyer_list = read_file(filename)
        flight_dict = make_dict(flyer_list)
        flight_list = clean_dict(flight_dict)
        print_flight(flight_list)
        frequent_flyer(flight_list)
    #make dict from list of lists from file
    #print names
    #print names and countries
    #print frequent flyer



main()