import scrapy,logging,time,os,skip
from Comics.items import ComicItem
from Comics.loader import ComicLoader
from Comics.utils import ComicPath
from Comics.utils import Conf

class RmComicSpider(scrapy.Spider):
    name = 'rm_comic'
    allowed_domains = ['roum12.xyz']
    main_url = 'https://'+allowed_domains[0]
    start_urls = main_url+'/books'
    
    # 遍历网站页数数据 
    def start_requests(self):
        for x in range(0,60):
            yield scrapy.Request(self.start_urls+"?&page="+str(x), callback=self.books_comic)

    # 获取多个漫画信息
    def books_comic(self, response):
        comics = ComicLoader(item=ComicItem(), response=response)
        # 获取漫画网站//script[@id]内的json数据并获取props.pageProps.books数据并作偱环解析
        for book in comics.get_exec(comics.get_xpath('//script[@id="__NEXT_DATA__"]/text()')[0], str_exec="props.pageProps.books"):
            # 排除指定的漫画名
            if book['name'] not in skip.skip_comic:
                yield scrapy.Request(url=self.start_urls+"/"+book['id'], callback=self.parse_comic)

    # 获取某个漫画的相关数据
    # 获取到多个章节链接后进入下个流程
    def parse_comic(self, response):
        # 初始化Comic数据并根据工程名称读取配置文件并自动解析
        comic_item = Conf().comic(self.name, ComicLoader(ComicItem(), response))
        # 循环遍历根据配置文件自动解析并注入的章节名和章节链接 
        for chapter, link in zip(comic_item.get_chapters(), comic_item.get_chapter_href()):
            # 打包导出item数据
            item = comic_item.load_item(chapter=chapter)
            # 获取最终存放CBZ的路径
            #cbz_path = ComicPath(item=item).file_path(ComicPath.PATH_CBZ, convert=True, chapter=chapter)
            cbz_path = ComicPath(item=item).PATH_CBZ()
            # 校验繁体和简体中文CBZ路径是否存在
            # if not checkUtils().is_error(item) and os.path.exists(cbz_path):
            if cbz_path !=None and os.path.exists(cbz_path):
                logging.info(f"漫画 {cbz_path} 已存在, 跳过中...")
                yield item
            else:
                # 开始访问章节链接并跳转到self.parse_chapter
                yield scrapy.Request(self.main_url+link, meta={'item': item}, callback=self.parse_chapter)


    # 读取某章节下的所有图片
    def parse_chapter(self, response):
        # 获取传入的漫画item数据
        comic_item = ComicLoader(item=response.meta['item'], response=response)
        data = comic_item.get_xpath('//script[@id="__NEXT_DATA__"]/text()')[0]
        item: ComicLoader = Conf().parse_chapter(item=comic_item, value=data)
        comic = item.load_item()
        chapter_api_url = item.get_chapter_api() 
        if chapter_api_url is not None and len(chapter_api_url) != 0 :
            try:
                yield scrapy.Request(self.main_url + chapter_api_url, meta={'item': comic}, callback=self.parse_chapter_api)
            except: 
                logging.warning(f"yield scrapy.Request({self.main_url} + {chapter_api_url}, meta={comic}, callback=self.parse_chapter_api)")
        else:
            yield comic 

    # 加密数据API处理
    def parse_chapter_api(self, response):
        comic_item = ComicLoader(item=response.meta['item'], response=response)
        item: ComicLoader = Conf().parse_chapter(item=comic_item, value=response.text)
        yield item.load_item()


    def parse(self, response):
        raise NotImplementedError
    
    def error_parse(self, response):
        raise NotImplementedError