import requests
from lxml import html
from codecs import encode
from operator import itemgetter


USERNAME = encode('grfgnppbhag2016', 'rot13')
PASSWORD = encode('IlIllIlIl.', 'rot13')

brand = 'cole+haan'
category = 'shoes'
minimumPrice = '10'
maximumPrice = '25'
size = '7'
minimumOriginalPrice = 1
maximumOriginalPrice = 600
minimumMarkdown = 95

newBuyers = []

global endOfListing
endOfListing = False

LOGIN_URL = "https://poshmark.com/login"

session_requests = requests.session()

result = session_requests.get(LOGIN_URL)

tree = html.fromstring(result.text)
authenticity_token = list(set(tree.xpath("//input[@name='authenticity_token']/@value")))[0]

payload = {
        "username": USERNAME,
        "password": PASSWORD,
        "authenticity_token": authenticity_token
    }

# Perform login
result = session_requests.post(LOGIN_URL, data=payload, headers=dict(referer=LOGIN_URL))


# Divide search URL for input constraints
def getURL(page):
    URL = 'https://poshmark.com/search?query={}&category={}&max_id={}&size%5B%5D={}&price%5B%5D={}-{}' \
          '&availability=available&spt=true'.format(brand, category, page, size, minimumPrice, maximumPrice)
    return URL


def scrapePage(URL):
    result = session_requests.get(URL, headers=dict(referer=URL))
    tree = html.fromstring(result.content)
    if ["Sorry, we couldn't find anything."] == tree.xpath('//h2/text()'):  # Checks for End of Listings
        global endOfListing
        endOfListing = True

    currentPrice = tree.xpath('//div[@class="price"]/text()')
    print(len(currentPrice))
    originalPrice = tree.xpath('//span[@class="original"]/text()')
    title = tree.xpath('//span[@class="item-title"]/text()')
    imgLink = tree.xpath('//img[@class="covershot add_pin_it_btn"]/@src')
    description = tree.xpath('//div[@class="description"]/text()')
    id = tree.xpath('//div[@class="listing-con shopping-tile"]/@id')

    def formatPrice(unformattedPrice):  # Removes garbage formatting
        formattedPrice = []
        for item in unformattedPrice:
            item = item.strip("\xa0")
            if item == '':
                continue
            formattedPrice.append(item)
        return formattedPrice

    currentPrice = formatPrice(currentPrice)  # Removes garbage formatting

    def placeInDictionary(iterations):  # Adds all lists into dictionary
        for i in iterations:
            thisOriginalPrice = int(originalPrice[i].strip('$'))
            thisCurrentPrice = int(currentPrice[i].strip('$'))
            if (thisOriginalPrice < minimumOriginalPrice) or (thisOriginalPrice > maximumOriginalPrice):
                continue  # Skips garbage listings
            thisMarkdown = str(int((1 - (round(thisCurrentPrice / thisOriginalPrice, 2))) * 100)) + "%"
            if (int(thisMarkdown.strip('%')) < minimumMarkdown):
                continue  # Skips listings below markdown threshold
            newBuyers.append({'Title': title[i],
                              'Price': currentPrice[i],
                              'Full price': originalPrice[i],
                              'Markdown': thisMarkdown,
                              'Description': description[i],
                              'Link': str('https://poshmark.com/listing/' + id[i]),
                              'Image': str('https:' + imgLink[i])})

    placeInDictionary(range(len(currentPrice)))  # Adds all lists into dictionary
    finalList = sorted(newBuyers, key=itemgetter('Markdown'), reverse=True)  # Rearranges dictionary to sort by Markdown
    return finalList


def checkListings():
    dictionary = []
    global endOfListing
    endOfListing = False
    pageNumber = 1
    while not endOfListing:
        dictionary = scrapePage(getURL(pageNumber))
        pageNumber += 1
    return dictionary

finalOutput = checkListings()
print(finalOutput)