#imgur.py lets you doenload all the pictures inside a recent gallery from a
#         certain category in imgur
#         usage:   imgur.py <category>  example: science




import os, requests, bs4, sys


if len(sys.argv)>1:
    category = sys.argv[1]
    os.chdir('C:\\Python36\\Scripts')
    url = 'https://imgur.com/search?q=' + category
    print(url)
    os.makedirs(category, exist_ok=True)

    res = requests.get(url)
    res.raise_for_status()

    soup = bs4.BeautifulSoup(res.text, "html.parser")
    fotos = soup.select('a[class="image-list-link"]')

    for i in range(10):                                        #change the range to get into more Galleries
        #URL de la galleria
        basename = fotos[i].get('href')
        linkToGallery = 'https://imgur.com'+basename
        res2 = requests.get(linkToGallery)
        res2.raise_for_status()
        print('Desde la galleria %s' %linkToGallery)

        soup2 = bs4.BeautifulSoup(res2.text, "html.parser")

        #imagenes dentro de la galleria
        fotosInside = soup2.select('a img')
        if fotosInside == []:
            print('x x x No image found in this gallery')
        for i in range(len(fotosInside)):
            #link individual de cada foto
            linkInside = 'http:'+ fotosInside[i].get('src')

            res3 = requests.get(linkInside)
            res3.raise_for_status()
            imageFile = open(os.path.join(category, os.path.basename(linkInside)),'wb')
            print('- - - Descargando la imagen %s' %linkInside)
            for chunk in res3.iter_content(100000):
                imageFile.write(chunk)
            imageFile.close()