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

# ### Pobieranie zbioru i pakietów

# In[1]:
from kaggle.api.kaggle_api_extended import KaggleApi

api = KaggleApi()
api.authenticate()

api.dataset_download_files('thedevastator/1-5-million-beer-reviews-from-beer-advocate', path="/app", unzip=True)
# get_ipython().run_line_magic('pip', 'install kaggle')
# get_ipython().run_line_magic('pip', 'install pandas')
# get_ipython().run_line_magic('pip', 'install numpy')
# get_ipython().run_line_magic('pip', 'install scikit-learn')
# get_ipython().run_line_magic('pip', 'install seaborn')
#
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# get_ipython().system('kaggle datasets download -d thedevastator/1-5-million-beer-reviews-from-beer-advocate')
#
#Change
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# get_ipython().system('kaggle datasets download -d')
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# get_ipython().system('unzip -o 1-5-million-beer-reviews-from-beer-advocate.zip')


# In[43]:


import numpy as np
import pandas as pd
import seaborn as sns
from sklearn.model_selection import train_test_split
import matplotlib.pyplot as plt
from sklearn.preprocessing import MinMaxScaler

pd.set_option('float_format', '{:f}'.format)


# ## Wczytywanie danych

# In[8]:


beers=pd.read_csv('beer_reviews.csv')

beers.head()


# In[9]:


beers.info()


# ### Czyszczenie 

# In[49]:


beers.dropna(subset=['brewery_name'], inplace=True)
beers.dropna(subset=['review_profilename'], inplace=True)
beers.dropna(subset=['beer_abv'], inplace=True)

beers.isnull().sum()


# ### Normalizacja

# In[22]:


scaler = MinMaxScaler()

beers[['review_overall', 'review_aroma', 'review_appearance', 'review_palate', 'review_taste', 'beer_abv', 'beer_beerid']] = scaler.fit_transform(beers[['review_overall', 'review_aroma', 'review_appearance', 'review_palate', 'review_taste', 'beer_abv', 'beer_beerid']])


# ### Podział na podzbiory

# In[24]:


beers_train, beers_dev_test = train_test_split(beers, test_size=0.2, random_state=1234)
beers_dev, beers_test = train_test_split(beers_dev_test, test_size=0.5, random_state=1234)


# In[25]:


print(f"Liczba kolumn w każdym zbiorze: {beers.shape[1]} kolumn")
print(f"Całość: {beers.shape[0]} rekordów ")
print(f"Train: {beers_train.shape[0]} rekordów")
print(f"Dev: {beers_dev.shape[0]} rekordów")
print(f"Test: {beers_test.shape[0]} rekordów")


# ### Przegląd danych

# In[51]:


print(f"Suma różnych piw: {beers['beer_name'].nunique()}")
print(f"Suma różnych styli: {beers['beer_style'].nunique()}")
print(f"Suma różnych browarów: {beers['brewery_name'].nunique()}")


# In[76]:


style_counts = beers['beer_style'].value_counts()

top_15_styles = style_counts.head(15) 

plt.bar(top_15_styles.index, top_15_styles.values)
plt.xlabel('Styl')
plt.ylabel('Liczba piw')
plt.title('Ilość piw dla naliczniejszych styli')
plt.xticks(rotation=90)
plt.tight_layout()
plt.show()


# In[91]:


reviews = pd.DataFrame(beers.groupby('beer_name')['review_overall'].mean())
reviews['Liczba opini'] = pd.DataFrame(beers.groupby('beer_name')['review_overall'].count())
reviews = reviews.sort_values(by=['Liczba opini'], ascending=False)
reviews.head()


# In[32]:


beers[['review_overall', 'review_aroma', 'review_appearance', 'review_palate', 'review_taste', 'beer_abv', 'beer_beerid']].describe().map(lambda x: f"{x:0.3f}")


# In[33]:


beers_train[['review_overall', 'review_aroma', 'review_appearance', 'review_palate', 'review_taste', 'beer_abv', 'beer_beerid']].describe().map(lambda x: f"{x:0.1f}")


# In[34]:


beers_dev[['review_overall', 'review_aroma', 'review_appearance', 'review_palate', 'review_taste', 'beer_abv', 'beer_beerid']].describe().map(lambda x: f"{x:0.1f}")


# In[35]:


beers_test[['review_overall', 'review_aroma', 'review_appearance', 'review_palate', 'review_taste', 'beer_abv', 'beer_beerid']].describe().map(lambda x: f"{x:0.1f}")


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