import glob
import shutil
from pathlib import Path
from blog.page import Page
from blog.config import Config
from jinja2 import Environment, FileSystemLoader, Template
from rss import RssFeed

class Blog:

    def __init__(self, conf: Config):
        """ """
        self.conf = conf
        self.pages = dict()

    def load_pages(self):
        """Charge tous les fichiers .md dans le dossier inbox"""
        files_list = glob.glob(f"{self.conf.inbox}/*.md")

        self.pages = dict()
        for file in files_list:
            self.pages[Path(file).stem] = Page(Path(file))

    def make(self):
        """Convertit les pages en un site html"""
        if not self.pages:
            self.load_pages()

        env = Environment(loader=FileSystemLoader(self.conf.theme))

        page_template = env.get_template("page.html.j2")
        index_template = env.get_template("index.html.j2")

        self._copy_css()
        self._build_all_pages(page_template)
        self._build_index(index_template)
        self._build_rss()

    def _build_all_pages(self, template: Template):
        """Convertit les pages markdown dans conf.inbox en html dans conf.outbox"""

        outbox_path = Path(f"{self.conf.outbox}/pages")
        if not outbox_path.is_dir():
            outbox_path.mkdir()

        for filename in self.pages:
            html_content = self.pages[filename].html(template)
            with open(f"{self.conf.outbox}/pages/{filename}.html", "w+") as html_file:
                html_file.write(html_content)

    def _build_index(self, template: Template):
        """Crée l'index du blog."""
        html_content = template.render(
            pages=self.pages, title=self.conf.title, presentation=self.conf.presentation
        )
        with open(f"{self.conf.outbox}/index.html", "w+") as html_file:
            html_file.write(html_content)

    def _build_rss(self):
        """ """
        feed = RssFeed(language="fr-fr", title=self.conf.title, link=self.conf.url, description=self.conf.presentation )
        for page in self.pages:
            feed.add_item(
                title = self.pages[page].meta["title"],
                link = Path(self.conf.url) / 'pages' / (page + '.html'),
                description = "Ma description a moi !",
                pubdate = self.pages[page].meta["date"]
            )
        with open(Path(self.conf.outbox) / "flux.rss", 'w+') as rss_file:
            feed.write(rss_file, 'utf-8')

    def _copy_css(self):
        css_path = Path(self.conf.theme) / "css"
        dest_path = Path(self.conf.outbox) / "css"

        if not dest_path.exists():
            dest_path.mkdir()

        for css_file in css_path.glob("*.css"):
            dest_file = dest_path / css_file.name
            shutil.copy(css_file, dest_file)