OtoScrapV7

# -*- coding: utf-8 -*-
"""
Created on Thu Apr 25 09:06:22 2019

@author: lancernik
"""

# -*- coding: utf-8 -*-
"""
Created on Wed Apr 24 23:35:43 2019

@author: lancernik
"""


from requests import get
from requests.exceptions import RequestException
from contextlib import closing
from bs4 import BeautifulSoup
import string
import re
from itertools import groupby
import pandas as pd
import time
import matplotlib.pyplot as plt
import numpy as np
from scipy.stats import gaussian_kde
from scipy.stats import kde
import seaborn as sns

from sklearn.linear_model import LinearRegression
from sklearn.model_selection import train_test_split
import matplotlib.pyplot as plt


def simple_get(url):
    #Zwraca none, w przypadku problemu z pobraniem danych
    try:
        with closing(get(url, stream=True)) as resp:
            if is_good_response(resp):
                return resp.content
            else:
                return None

    except RequestException as e:
        log_error('Error during requests to {0} : {1}'.format(url, str(e)))
        return None

def is_good_response(resp):
    #Zwaraca True, jeżeli HTMl
    content_type = resp.headers['Content-Type'].lower()
    return (resp.status_code == 200
            and content_type is not None
            and content_type.find('html') > -1)

def log_error(e):
    print(e)

def lastpage(page):
    lastepage_out=0
    lastpage = str(page.find_all(class_="page"))
    lastpage_all = [int(s) for s in re.findall(r'\b\d+\b',lastpage)]
    lastpage_out = lastpage_all[-1]
    return lastepage_out

def scrappy(page):  #Pobiera dane z konretnej strony

    datadict = {'Milage':[0],'Age':[0],'Price':[0],'Engine capacity':[0]}
    dataset = pd.DataFrame(data=datadict)


    #Zdobywa numer ostatniej strony

    lastpage = str(page.find_all(class_="page"))
    lastpage_all = [int(s) for s in re.findall(r'\b\d+\b',lastpage)]
    lastpage_out = lastpage_all[-1]

    #Scrapowanie przebiegu

    milage_from_page = ''.join(map(str,(page.find_all("li", {"data-code" : "mileage"}))))
    milage_from_page_nospace = milage_from_page.translate({ord(c): None for c in string.whitespace})
    milage_page_out = [int(''.join(i)) for is_digit, i in groupby(milage_from_page_nospace, str.isdigit) if is_digit]

    #Scrapowanie roku z danej strony

    age_from_page = str(page.find_all(class_="offer-item__params-item"))
    age_from_page_nospace = age_from_page.translate({ord(c): None for c in string.whitespace})
    age_from_page_out = [int(s) for s in re.findall(r'\b\d+\b',age_from_page_nospace)]

    # Scrapowanie cen z danej strony

    price_from_page = str(page.find_all(class_="offer-price__number"))
    price_from_page_nospace = price_from_page.translate({ord(c): None for c in string.whitespace})
    price_from_page_out = [int(s) for s in re.findall(r'\b\d+\b',price_from_page_nospace)]

    capacity_from_page = ''.join(map(str,(page.find_all("li", {"data-code" : "engine_capacity"}))))
    capacity_from_page_nospace = capacity_from_page.translate({ord(c): None for c in string.whitespace})
    capacity_page_out1 = [int(''.join(i)) for is_digit, i in groupby(capacity_from_page_nospace, str.isdigit) if is_digit]
    capacity_page_out = [cap for cap in capacity_page_out1 if cap !=3]



    df = pd.DataFrame(
    {'Milage':milage_page_out,
     'Age': age_from_page_out,
     'Price': price_from_page_out,
     'Engine capacity':capacity_page_out})

    dataset = dataset.append(df,ignore_index=True)

    return dataset


def ScrapPage(marka,model,start,stop):  #Oczyszcza dane, wyznacza zares stron
    datadict = {'Milage':[0],'Age':[0],'Price':[0]}
    dataset_out = pd.DataFrame(data=datadict)
    for i in range(start,stop):  #Docelowo 1, lastpage
        time.sleep(2)

        #To w formacie beda kolejne argumenty, tj za opel i corsa
        url = simple_get('https://www.otomoto.pl/osobowe/{}/{}/?search%5Bfilter_float_mileage%3Afrom%5D=0&search%5Bfilter_float_engine_capacity%3Afrom%5D=0&search%5Bbrand_program_id%5D%5B0%5D=&search%5Bcountry%5D=&page={}'.format(marka,model,i))
        page = BeautifulSoup(url, 'html.parser')
        print(scrappy(page))
        dataset_out = dataset_out.append(scrappy(page), ignore_index=True)
        print(dataset_out)


    #Usuwanie danych odstających

    clear = dataset_out.Milage[((dataset_out.Milage - dataset_out.Milage.mean()) / dataset_out.Milage.std()).abs() > 2]
    clear = clear.append(dataset_out.Age[((dataset_out.Age - dataset_out.Age.mean()) / dataset_out.Age.std()).abs() > 2])
    clear = clear.append(dataset_out.Price[((dataset_out.Price - dataset_out.Price.mean()) / dataset_out.Price.std()).abs() > 3])
    test = clear.index.get_values()

    for i in range(0,len(test)):
        dataset_out = dataset_out.drop(test[i],axis=0)

    return dataset_out


def ClearCarData():
    clear = dataset_out.Milage[((dataset_out.Milage - dataset_out.Milage.mean()) / dataset_out.Milage.std()).abs() > 2]
    clear = clear.append(dataset_out.Age[((dataset_out.Age - dataset_out.Age.mean()) / dataset_out.Age.std()).abs() > 2])
    clear = clear.append(dataset_out.Price[((dataset_out.Price - dataset_out.Price.mean()) / dataset_out.Price.std()).abs() > 3])
    test = clear.index.get_values()

    for i in range(0,len(test)):
        dataset_out = dataset_out.drop(test[i],axis=0)
    return dataset_out

def LoadCarData(filename):
    dataset_out = pd.read_csv('{}.csv'.format(filename))  #9-45
    clear = dataset_out.Milage[((dataset_out.Milage - dataset_out.Milage.mean()) / dataset_out.Milage.std()).abs() > 2]
    clear = clear.append(dataset_out.Age[((dataset_out.Age - dataset_out.Age.mean()) / dataset_out.Age.std()).abs() > 2])
    clear = clear.append(dataset_out.Price[((dataset_out.Price - dataset_out.Price.mean()) / dataset_out.Price.std()).abs() > 3])
    test = clear.index.get_values()

    for i in range(0,len(test)):
        dataset_out = dataset_out.drop(test[i],axis=0)
    return dataset_out

def regress(x,y):
    model = LinearRegression()
    model.fit(x,y)
    model.predict([[100]])

    x_test = np.linspace(min(x),400000)
    y_pred = model.predict(x_test[:,None])

    plt.scatter(x,y,s=2)
    plt.plot(x_test,y_pred,'r')
    plt.legend(['Regresja', 'Kropeczki'])
    plt.show()

def Plot1(x,y):
    # Evaluate a gaussian kde on a regular grid of nbins x nbins over data extents



    nbins=300
    k = kde.gaussian_kde([x,y])
    xi, yi = np.mgrid[x.min():x.max():nbins*1j, y.min():y.max():nbins*1j]
    zi = k(np.vstack([xi.flatten(), yi.flatten()]))

    # Make the plot
    plt.pcolormesh(xi, yi, zi.reshape(xi.shape))
    plt.show()

    # Change color palette
    plt.pcolormesh(xi, yi, zi.reshape(xi.shape), cmap=plt.cm.Greens_r)
    plt.show()
def Plot2(x,y):
    # Make the plot
    plt.hexbin(x, y, gridsize=(15,15) )
    plt.show()

    # We can control the size of the bins:
    plt.hexbin(x, y, gridsize=(150,150) )
    plt.show()
def Plot3(x,y):
    sns.jointplot(x, y, kind='scatter')
    sns.jointplot(x, y, kind='hex')
    sns.jointplot(x, y, kind='kde')

    # Then you can pass arguments to each type:
    sns.jointplot(x, y, kind='scatter', s=200, color='m', edgecolor="skyblue", linewidth=2)

    # Custom the color
    sns.set(style="white", color_codes=True)
    sns.jointplot(x, y, kind='kde', color="skyblue",xlim={-30000,300000})







#LoadCarData(filename):  Wczytuje dane z pliku CSV stworzonego przez funkcje ScrapPage,
#dodatkowo oczyszcza z danych odstajcych

#ClearCarData():   Oczyszcza z danych odstajacych, zdiala tylko dla df o nazwie dataset_out




# 1)   Scrapuje dane

#         Marka,   model, start, stop
dataset_out = ScrapPage("opel" ,"corsa",  1     ,2)
dataset_out.to_csv('dataset1.csv')
dataset_out = pd.read_csv('dataset1.csv')  #9-45


# 2)   Wczytuje zeskrapowane dane

#dataset_out = LoadCarData("dataset1")


#Rozne ploty

x=dataset_out['Milage']
y=dataset_out['Age']
#
#
#Plot1(x,y)
#Plot2(x,y)
Plot3(x,y)







#Regresja przebiegu względem czasu
#
#a=np.array(dataset_out['Milage'].tolist()).reshape(-1,1)
#b=np.array(dataset_out['Age'].tolist()).reshape(-1,1)
#regress(a,b)






#To sie przyda do wojewodztw
#for i, li in enumerate(page.select('li')):  #To się przyda do wojedzowtw
#    print(i, li.text)