import scrapy
from bs4 import BeautifulSoup
import requests
import re
import sys
import json

#Def the Uptodate URI for use
up_api_url = "https://www.uptodate.com/services/app/contents/search/2/json?&language=en&max=10&search="
up_prefix_url = "https://www.uptodate.com"
up_content_prefix_url = "https://www.uptodate.com/services/app/contents/topic/" #the content prefix URL
up_result_title_list = []
up_result_url_list = []


def do_uptodate_search_with_uptodate_api(key_word):
    search_results = requests.get(up_api_url + key_word)
    return(search_results.json())

def uptodate_title_process(title): #經觀察後，串接到內容 API 需要標題，但是標題格式需要做轉換
    hyphen_title = title.replace(" ", "-") #把空格取代為hyphen
    hyphen_title = hyphen_title.replace(":", "") #把冒號去掉
    return (hyphen_title.lower())

def uptodate_full_content_get(processed_title):
    full_content = requests.get(up_content_prefix_url + processed_title + "/print/json")
    return(full_content.json())

def uptodate_title_filter(title):
    search_list = ["Approach", "approach", "evaluation", "Evaluation"]
    hitlist = []
    for element in search_list:
        if (title).find(element) == -1:
            hitlist.append(0)
        else:
            hitlist.append(1)

    if 1 in hitlist: return True
    else: return False

def ouput_html(item):
    article_full_content = (uptodate_full_content_get(item))
    soup = BeautifulSoup(article_full_content["data"]["printHtml"], 'html5lib')
    prettyHTML = BeautifulSoup(soup.prettify(), 'html5lib')
    content = str(prettyHTML.find(id="topicContent"))
    with open(item + ".html", "w") as file:
        file.write(content)

if __name__ == '__main__':
    key_word = input("Please enter your keyword: ")
    up_search_result = do_uptodate_search_with_uptodate_api(key_word)
    for searchResults in up_search_result["data"]["searchResults"]:
        if searchResults["type"] == "medical":
            if uptodate_title_filter(searchResults["title"]) == True:
                up_result_title_list.append(searchResults["title"])

    for index, element in enumerate(up_result_title_list):
        up_result_title_list[index] = uptodate_title_process(element)

    print(up_result_title_list)

    for item in up_result_title_list:
        ouput_html(item)