import os
import json
import html
import requests
import logging

logger = logging.getLogger(__name__)


def get_files_path(file_dir, filetype='.txt'):
    """得到文件夹下的所有.txt文件的路径
    Args:
        file_dir: 文件夹路径
        filetype: 文件后缀
    Returns:
        所有filetype类型文件的绝对路径
    """
    files_path = []
    for root, dirs, files in os.walk(file_dir):
        for file in files:
            if filetype is None or (os.path.splitext(file)[1] == filetype):
                files_path.append(os.path.join(root, file))
    return files_path


def get_all_files(current_address):
    files = []
    for parent, dirnames, filenames in os.walk(current_address):
        # Case1: traversal the directories
        # for dirname in dirnames:
        #     print("Parent folder:", parent)
        #     print("Dirname:", dirname)
        # # Case2: traversal the files
        for filename in filenames:
            # print("Parent folder:", parent)
            file_path = os.path.join(parent, filename)
            files.append(file_path)
    return files


def post(url, params, retry=3, headers=None):
    if headers is None:
        hdrs = {"Content-Type": "application/json"}
    else:
        hdrs = headers
    fails = 0
    while fails < retry:
        try:
            if headers is None:
                data = json.dumps(params)
            else:
                data = params
            logger.debug(f"will post {data} to {url}")
            resp = requests.post(url, data, headers=hdrs, timeout=10)
            if resp:
                logger.info(f"resp {resp.content}")
                return resp.json()
            else:
                logger.error(f"resp: [{resp}]")
                fails += 1
        except Exception as error:
            logger.error(f"post {params} to {url} failed {error}")
            fails += 1
            if fails > retry:
                raise error


def send_topic(web_url, book_dir, mapping_path, send_topic_request_param):
    data_dir = 'data'
    # web_url = "https://codechina.csdn.net/csdn/book_code_c798a5992a654857867ec15660e1c32a/-/blob/master/"
    request_url = 'http://ccloud.internal.csdn.net/v1/internal/community/content/sendTopic'

    # files = get_files_path('data/全程软件测试（第3版）', '.java')

    files = get_all_files(book_dir)
    print(files)

    if not os.path.exists(mapping_path):
        chapter_code_mapping = {}
        save_mapping = json.dumps(chapter_code_mapping,
                                  ensure_ascii=False,
                                  indent=2)
        with open(mapping_path, 'w') as f:
            f.write(save_mapping)

    with open(mapping_path, 'r') as f:
        chapter_code_mapping = json.load(f)

    for file in files:
        topic_title = file.replace(book_dir, '')
        topic_title = topic_title.replace('/', '｜')
        topic_title = topic_title.replace('　', '.')
        # topic_title = html.escape(topic_title)
        topic_content = web_url + file
        topic_content = "代码：<a href=\"{}\">{}</a>".format(
            topic_content, topic_title)

        print(topic_title)

        send_topic_request_param = {
            "type": "long_text",
            "content": topic_content,
            "topicTitle": topic_title,
            "mdContent": topic_content,
            "bizNo": "ebook"
        }

        if chapter_code_mapping.get(file) is None:
            resp = post(request_url, send_topic_request_param)
            topic_link = resp['data']['content']['url']
            chapter_code_mapping[file] = topic_link
            print('{}:{}'.format(file, topic_link))
            save_mapping = json.dumps(chapter_code_mapping,
                                      ensure_ascii=False,
                                      indent=2)
            with open(mapping_path, 'w') as f:
                f.write(save_mapping)
        else:
            send_topic_request_param['id'] = int(
                chapter_code_mapping[file].split('/')[-1])
            resp = post(request_url, send_topic_request_param)
            print('{}:{}'.format(file, chapter_code_mapping.get(file)))