#!/usr/bin/env python
# coding: utf-8

# # zadania domowe naiwny bayes2 gotowa biblioteka

# - wybrać jedno z poniższych repozytoriów i je sforkować:
#   - https://git.wmi.amu.edu.pl/kubapok/paranormal-or-skeptic-ISI-public
#   - https://git.wmi.amu.edu.pl/kubapok/sport-text-classification-ball-ISI-public
# - stworzyć klasyfikator bazujący na naiwnym bayessie (może być gotowa biblioteka), może też korzystać z gotowych implementacji tfidf
# - stworzyć predykcje w plikach dev-0/out.tsv oraz test-A/out.tsv
# - wynik accuracy sprawdzony za pomocą narzędzia geval (patrz poprzednie zadanie) powinien wynosić conajmniej 0.67
# - proszę umieścić predykcję oraz skrypty generujące (w postaci tekstowej a nie jupyter) w repo, a w MS TEAMS umieścić link do swojego repo
# termin 12.05, 40 punktów
# 

# In[1]:


import pathlib
import gzip
import numpy as np
import gensim
from stop_words import get_stop_words
from sklearn.feature_extraction.text import TfidfVectorizer


# In[2]:


SPORT_TEXT_PATH = pathlib.Path('C:/Users/Fijka/Documents/sport-text-classification-ball-ISI-public')
file_name = 'train'


# In[3]:


def read_data(filename):
    all_data = gzip.open(filename).read().decode('UTF-8').split('\n')
    data, expected_class = [], []
    for i in [line.split('\t') for line in all_data][:-1]:
        data.append(i[1])
        expected_class.append(i[0])
    return data, expected_class

train_data, train_clesses = read_data(SPORT_TEXT_PATH/file_name/'train.tsv.gz')
train_data, train_clesses = train_data[:20000], train_clesses[:20000]


# In[4]:


stop_words = get_stop_words('pl') + ['a', 'u', 'i', 'z', 'w', 'o']
print(stop_words)


# In[5]:


print(train_clesses[0])
print(train_data[0])


# In[6]:


train_data_tokenized = [list(set(gensim.utils.tokenize(x, lowercase = True))) for x in train_data]


# In[7]:


train_data_tokenized[0]


# In[8]:


train_data_lemmatized = [list(set([w[:6] for w in set(i) - set(stop_words)])) for i in train_data_tokenized]
tmp = [i.sort() for i in train_data_lemmatized]


# In[9]:


print(train_data_lemmatized[0])


# In[10]:


print(train_data_lemmatized[0])
print([' '.join(i) for i in train_data_lemmatized[:2]])


# In[11]:


import itertools

vectorizer = TfidfVectorizer()
X = vectorizer.fit_transform([' '.join(i) for i in train_data_lemmatized])


# In[12]:


vocabulary = vectorizer.get_feature_names()


# In[13]:


from sklearn.naive_bayes import GaussianNB
model = GaussianNB()
model.fit(X.toarray(), train_clesses)
score_train = model.score(X.toarray(), train_clesses)


# In[14]:


with open('dev-0/in.tsv', "r", encoding="utf-8") as f:
    dev_0_data = [line.rstrip() for line in f]


# In[15]:


dev_0_data_tokenized = [list(set(gensim.utils.tokenize(x, lowercase = True))) for x in dev_0_data]


# In[16]:


dev_0_data_lemmatized = [list(set([w[:6] for w in set(i) - set(stop_words)])) for i in dev_0_data_tokenized]


# In[17]:


f = open("dev-0/out.tsv", "a")
for i in [' '.join(i) for i in dev_0_data_lemmatized]:
    f.write(model.predict([vectorizer.transform([i]).toarray()[0]])[0] + '\n')
f.close()


# In[18]:


with open('dev-0/out.tsv', "r", encoding="utf-8") as f:
    o = [line.rstrip() for line in f]


# In[19]:


with open('dev-0/expected.tsv', "r", encoding="utf-8") as f:
    e = [line.rstrip() for line in f]


# In[20]:


t, f = 0, 0

for i in range(len(o)):
    if o[i] == e[i]:
        t += 1
    else:
        f += 1
print(t, f)
print(t/(t + f))


# In[21]:


with open('test-A/in.tsv', "r", encoding="utf-8") as f:
    test_A_data = [line.rstrip() for line in f]
test_A_data_tokenized = [list(set(gensim.utils.tokenize(x, lowercase = True))) for x in test_A_data]
test_A_data_lemmatized = [list(set([w[:6] for w in set(i) - set(stop_words)])) for i in test_A_data_tokenized]
f = open("test-A/out.tsv", "a")
for i in [' '.join(i) for i in test_A_data_lemmatized]:
    f.write(model.predict([vectorizer.transform([i]).toarray()[0]])[0] + '\n')
f.close()