import os

import yaml
import json

import urllib.request, urllib.error, urllib.parse

from lxml import etree
import lxml.html
import lxml.html.soupparser
from lxml import html



class fdb_spider(object):
    def __init__(self, config_file):
        with open(config_file, "r") as stream:
            try:
                self.config = yaml.safe_load(stream)
            except yaml.YAMLError as exc:
                print(exc)

    # input list of funding databases in form of yaml file ['foerderinfo.bund.de', 'ausschreibungen.giz.de', .. , 'usw']

    def download_entry_list_pages_of_funding_databases(self, list_of_fdbs):
        # download only html pages of the funding databases specified in input

        for fdb in list_of_fdbs:
            for key in self.config:
                if key in list_of_fdbs:
                    try:
                        entry_list = self.config.get(key).get("entry-list")
                    except Exception as e:
                        print(
                            "There is a problem with the configuration variable entryList in the config.yaml - the original error message is:",
                            e,
                        )
                    try:
                        entry_list_link1 = entry_list.get("link1")
                    except Exception as e:	
                        print(
                            "No link1 defined in config.yaml - the original error message is:",
                            e,
                        )

                    try:
                        entry_list_link2 = entry_list.get("link2")
                    except Exception as e:
                        print(
                            "No link2 defined in config.yaml - the original error message is:",
                            e,
                        )

                    try:
                        entry_iteration_var_list = eval(entry_list.get("iteration-var-list"))
                    except Exception as e:
                        print(
                            "No iteration-var-list defined in config.yaml - the original error message is:",
                            e,
                        )

                    for i in entry_iteration_var_list:

                        # download the html page of the List of entrys

                        response = urllib.request.urlopen(entry_list_link1 + str(i) + entry_list_link2)
                        web_content = response.read().decode("UTF-8")

                        # save interim results to files

                        f = open("spiders/pages/" + key + str(i) + "entryList.html", "w+")
                        f.write(web_content)
                        f.close

    def find_config_parameter(self, list_of_fdbs):
        for fdb in list_of_fdbs:

            try:
                iteration_var_list = eval(self.config.get(fdb).get("entry-list").get("iteration-var-list"))
            except Exception as e:
                print(
                    "There is a problem with the configuration variable entryList iteration var list in the config.yaml",
                    e,
                )

            fdb_conf = self.config.get(fdb)
            fdb_domain = fdb_conf.get("domain")
            fdb_conf_entry_list = fdb_conf.get("entry-list")
            fdb_conf_entry_list_parent = fdb_conf_entry_list.get("parent")
            fdb_conf_entry_list_child_name = fdb_conf_entry_list.get("child-name")
            fdb_conf_entry_list_child_link = fdb_conf_entry_list.get("child-link")
            fdb_conf_entry_list_child_info = fdb_conf_entry_list.get("child-info")
            fdb_conf_entry_list_child_period = fdb_conf_entry_list.get("child-period")


            for i in iteration_var_list:
                print(i)
                
                

                try:
                    # use soupparser to handle broken html

                    tree = lxml.html.soupparser.parse(
                        "spiders/pages/" + fdb + str(i) + "entryList.html"
                    )

                except Exception as e:
                    tree = html.parse("spiders/pages/" + fdb + str(i) + "entryList.html")
                    print(
                        "parsing the xml files did not work with the soupparser. Broken html will not be fixed as it could have been",
                        e,
                    )

                try:

                    print('this is the n looped elements of the parent specified in config.yaml:')

                    #print('entrylistparent', fdb_conf_entry_list_parent)

                    #print(tree.xpath("//html//body//div//main//div//div[@class='row']//section[@class='l-search-result-list']"))

                    #print(etree.tostring(tree.xpath(fdb_conf_entry_list_parent)).decode())

                    for n in range(len(tree.xpath(fdb_conf_entry_list_parent))):
                        print('-----------------------------------------------------------------------------------------------------------------------------------------')
                        print(etree.tostring(tree.xpath(fdb_conf_entry_list_parent)[n]).decode())

                    print('this is the name children:')

                    name_element = tree.xpath(fdb_conf_entry_list_parent + fdb_conf_entry_list_child_name)
                    print(name_element)
                    #for name in name_element:
                    #    print(name)
                    print(len(name_element))

                    print('this is the link children:')

                    link_element = tree.xpath(fdb_conf_entry_list_parent + fdb_conf_entry_list_child_link)
                    print(link_element)
                    #for link in link_element:
                    #    print(link)
                    print(len(link_element))

                    print('this is the info children:')

                    info_element = tree.xpath(fdb_conf_entry_list_parent + fdb_conf_entry_list_child_info)
                    print(info_element)
                    print(len(info_element))

                    print('this is the period children:')

                    period_element = tree.xpath(fdb_conf_entry_list_parent + fdb_conf_entry_list_child_period)
                    print(period_element)
                    print(len(period_element))

                except Exception as e:
                    print(
                        "parsing the html did not work.",
                        e,
                    )


    def parse_entry_list_data2dictionary(self, list_of_fdbs):
        for fdb in list_of_fdbs:
            
            try:
                iteration_var_list = eval(self.config.get(fdb).get("entry-list").get("iteration-var-list"))
            except Exception as e:
                print(
                    "There is a problem with the configuration variable entryList iteration var list in the config.yaml - the original error message is:",
                    e,
                )
            
            for i in iteration_var_list:
                print(i)
                try:
                    # use soupparser to handle broken html

                    tree = lxml.html.soupparser.parse(
                        "spiders/pages/" + fdb + str(i) + "entryList.html"
                    )

                except Exception as e:
                    tree = html.parse("spiders/pages/" + fdb + str(i) + "entryList.html")
                    print(
                        "parsing the xml files did not work with the soupparser. Broken html will not be fixed as it could have been, thanks to efficient particular html languages. The original error message is:",
                        e,
                    )

                try:    

                    #print('this is the n looped elements of the parent specified in config.yaml:')

                    #for e in tree.iter():
                        
                    #    print(e.tag)
                    #
                    #for e in tree.xpath("//html//body//div//main//div//div[@class='row']//section[@class='l-search-result-list']//div//div[@class='c-search-result__text-wrapper']//span[@class='c-search-result__title'][text()]"):
                    #for e in tree.xpath("//html//body//div//main//div//div[@class='row']//section[@class='l-search-result-list']//div//div[@class='c-search-result__text-wrapper']//span[@class='c-search-result__title']"):
                    
                    #    print(etree.tostring(e).decode())

                    

                    dictionary_entry_list = {}

                    fdb_conf = self.config.get(fdb)
                    fdb_domain = fdb_conf.get("domain")
                    fdb_conf_entry_list = fdb_conf.get("entry-list")
                    fdb_conf_entry_list_parent = fdb_conf_entry_list.get("parent")
                    fdb_conf_entry_list_child_name = fdb_conf_entry_list.get("child-name")
                    fdb_conf_entry_list_child_link = fdb_conf_entry_list.get("child-link")
                    fdb_conf_entry_list_child_info = fdb_conf_entry_list.get("child-info")
                    fdb_conf_entry_list_child_period = fdb_conf_entry_list.get("child-period")


                    print('blabliblub')
                    print('len', len(tree.xpath(fdb_conf_entry_list_parent)))
                    for n in range(len(tree.xpath(fdb_conf_entry_list_parent))):
                        print('oi inside the loop')
                        name = tree.xpath(
                            fdb_conf_entry_list_parent
                            + fdb_conf_entry_list_child_name
                        )[n]
                        
                        info = tree.xpath(
                            fdb_conf_entry_list_parent
                            + fdb_conf_entry_list_child_info
                        )[n]
                        
                        period = tree.xpath(
                            fdb_conf_entry_list_parent
                            + fdb_conf_entry_list_child_period
                        )[n]

                        print('oi ', name)
                        print('blablidubbiduub')
                        link = tree.xpath(
                            fdb_conf_entry_list_parent
                        #    + "["
                        #    + str(n)
                        #    + "]"
                            + fdb_conf_entry_list_child_link
                        )[n]
            
                        print('oi' + name)

                        if len(name) > 0:
                            dictionary_entry_list[n] = {}
                            dictionary_entry_list[n]["name"] = name
                            dictionary_entry_list[n]["info"] = info
                            dictionary_entry_list[n]["period"] = period

                            if fdb_domain in link:
                                dictionary_entry_list[n]["link"] = link

                            if fdb_domain not in link:
                                if link[-1] == '/':
                                    dictionary_entry_list[n]["link"] = fdb_domain + link
                                else:
                                    dictionary_entry_list[n]["link"] = fdb_domain + '/' + link

                except Exception as e:
                    print(
                        "parsing the html did not work. Possibly you first have to run download_link_list_pages_of_funding_databases(). The original error message is:",
                        e,
                    )

                # save interim results to files

                f = open("spiders/output/" + fdb + str(i) + "entryList.txt", "w+")
                f.write(str(dictionary_entry_list))
                f.close

    def download_entry_data_htmls(self, list_of_fdbs):
        for fdb in list_of_fdbs:
            
            try:
                iteration_var_list = eval(self.config.get(fdb).get("entry-list").get("iteration-var-list"))
            except Exception as e:
                print(
                    "There is a problem with the configuration variable entryList iteration var list in the config.yaml - the original error message is:",
                    e,
                )
            
            for i in iteration_var_list:
            
            
                f = open("spiders/output/" + fdb + str(i) + "entryList.txt")
                text = f.read()

                dictionary_entry_list = eval(text)

                for entry_id in dictionary_entry_list:
                    entry_link = dictionary_entry_list[entry_id]["link"]

                    # download the html page of the entry

                    response = urllib.request.urlopen(entry_link)
                    web_content = response.read().decode("UTF-8")

                    # save interim results to files

                    file_name = "spiders/pages/" + fdb + str(i) + "/" + str(entry_id) + ".html"

                    os.makedirs(os.path.dirname(file_name), exist_ok=True)
                    f = open(file_name, "w+")
                    f.write(web_content)
                    f.close

    def parse_entry_data2dictionary(self, list_of_fdbs):
        for fdb in list_of_fdbs:
            
            try:
                iteration_var_list = eval(self.config.get(fdb).get("entry-list").get("iteration-var-list"))
            except Exception as e:
                print(
                    "There is a problem with the configuration variable entryList iteration var list in the config.yaml - the original error message is:",
                    e,
                )
            
            for i in iteration_var_list:
            
                print("started to parse data of entry of " + fdb + " ..")

                f = open("spiders/output/" + fdb + str(i) + "entryList.txt")
                text = f.read()

                dictionary_entry_list = eval(text)

                fdb_conf = self.config.get(fdb)
                fdb_domain = fdb_conf.get("domain")
                fdb_conf_entry = fdb_conf.get("entry")
                fdb_conf_entry_info1 = fdb_conf_entry.get("info-1")
                fdb_conf_entry_info1_parent = fdb_conf_entry_info1.get("parent")
                fdb_conf_entry_info1_child_1 = fdb_conf_entry_info1.get(
                    "child-1"
                )

                for entry_id in dictionary_entry_list:
                    print(
                        "started to parse data of entry with name "
                        + dictionary_entry_list[entry_id]["name"]
                        + " .."
                    )

                    file_name = "spiders/pages/" + fdb + str(i) + "/" + str(entry_id) + ".html"

                    tree = lxml.html.soupparser.parse(file_name)

                    child_1 = tree.xpath(
                        fdb_conf_entry_info1_parent
                        + fdb_conf_entry_info1_child_1
                    )

                    print("oi", child_1)

                    if len(child_1) > 0:
                        dictionary_entry_list[entry_id]["child_1"] = child_1[
                            0
                        ]

                f = open("spiders/output/" + fdb + str(i) + "entryList.txt", "w+")
                f.write(str(dictionary_entry_list))
                f.close